release 1.1.1

built by GitHub Actions:
https://github.com/JFormDesigner/FlatLaf/actions/runs/686023039

.github/workflows/natives.yml

@@ -41,7 +41,9 @@ jobs:
             - name: Cache Gradle cache
               uses: actions/cache@v2
               with:
-                  path: ~/.gradle/caches
+                  path: |
+                    ~/.gradle/caches
+                    !~/.gradle/caches/modules-2/modules-2.lock
                   key: ${{ runner.os }}-gradle-${{ hashFiles('**/*.gradle.kts') }}
                   restore-keys: ${{ runner.os }}-gradle
 

CHANGELOG.md

@@ -1,6 +1,34 @@
 FlatLaf Change Log
 ==================
 
+## 1.1.1
+
+#### New features and improvements
+
+- Native window decorations: Support disabling native window decorations per
+  window. (set client property `JRootPane.useWindowDecorations` to `false` on
+  root pane).
+- Support running on WinPE. (issue #279)
+
+#### Fixed bugs
+
+- Native window decorations: Fixed missing animations when minimizing,
+  maximizing or restoring a window using window title bar buttons. (issue #282)
+- Native window decorations: Fixed broken maximizing window when restoring frame
+  state at startup. (issue #283)
+- Native window decorations: Fixed double window title bar when first disposing
+  a window with `frame.dispose()` and then showing it again with
+  `frame.setVisible(true)`. (issue #277)
+- Custom window decorations: Fixed NPE in `FlatTitlePane.findHorizontalGlue()`.
+  (issue #275)
+- Custom window decorations: Fixed right aligned progress bar in embedded menu
+  bar was overlapping window title. (issue #272)
+- Fixed missing focus indicators in heavy-weight popups. (issue #273)
+- InternalFrame: Fixed translucent internal frame menu bar background if
+  `TitlePane.unifiedBackground` is `true`. (issue #274)
+- Extras: UI Inspector: Fixed `InaccessibleObjectException` when running in Java 16.
+
+
 ## 1.1
 
 #### New features and improvements

build.gradle.kts

@@ -14,7 +14,7 @@
  * limitations under the License.
  */
 
-val releaseVersion = "1.1"
+val releaseVersion = "1.1.1"
 val developmentVersion = "1.2-SNAPSHOT"
 
 version = if( java.lang.Boolean.getBoolean( "release" ) ) releaseVersion else developmentVersion

flatlaf-core/src/main/java/com/formdev/flatlaf/FlatClientProperties.java

@@ -231,10 +231,28 @@ public interface FlatClientProperties
 
 	//---- JRootPane ----------------------------------------------------------
 
+	/**
+	 * Specifies whether FlatLaf native window decorations should be used
+	 * when creating {@code JFrame} or {@code JDialog}.
+	 * <p>
+	 * Setting this to {@code false} disables using FlatLaf native window decorations
+	 * for the window that contains the root pane. Needs to be set before showing the window.
+	 * <p>
+	 * (requires Window 10)
+	 * <p>
+	 * <strong>Component</strong> {@link javax.swing.JRootPane}<br>
+	 * <strong>Value type</strong> {@link java.lang.Boolean}
+	 *
+	 * @since 1.1.1
+	 */
+	String USE_WINDOW_DECORATIONS = "JRootPane.useWindowDecorations";
+
 	/**
 	 * Specifies whether the menu bar is embedded into the title pane if custom
 	 * window decorations are enabled. Default is {@code true}.
 	 * <p>
+	 * (requires Window 10)
+	 * <p>
 	 * <strong>Component</strong> {@link javax.swing.JRootPane}<br>
 	 * <strong>Value type</strong> {@link java.lang.Boolean}
 	 */

flatlaf-core/src/main/java/com/formdev/flatlaf/FlatLaf.java

@@ -157,7 +157,7 @@ public abstract class FlatLaf
 	 */
 	@Override
 	public boolean getSupportsWindowDecorations() {
-		if( SystemInfo.isProjector )
+		if( SystemInfo.isProjector || SystemInfo.isWinPE )
 			return false;
 
 		if( SystemInfo.isWindows_10_orLater &&
@@ -377,6 +377,12 @@ public abstract class FlatLaf
 		initIconColors( defaults, isDark() );
 		FlatInputMaps.initInputMaps( defaults );
 
+		// copy InternalFrame.icon (the Java cup) to TitlePane.icon
+		// (using defaults.remove() to avoid that lazy value is resolved and icon loaded here)
+		Object icon = defaults.remove( "InternalFrame.icon" );
+		defaults.put( "InternalFrame.icon", icon );
+		defaults.put( "TitlePane.icon", icon );
+
 		// get addons and sort them by priority
 		ServiceLoader<FlatDefaultsAddon> addonLoader = ServiceLoader.load( FlatDefaultsAddon.class );
 		List<FlatDefaultsAddon> addons = new ArrayList<>();
@@ -437,7 +443,10 @@ public abstract class FlatLaf
 		FontUIResource uiFont = null;
 
 		if( SystemInfo.isWindows ) {
-			Font winFont = (Font) Toolkit.getDefaultToolkit().getDesktopProperty( "win.messagebox.font" );
+			// on WinPE use "win.defaultGUI.font", which is usually Tahoma,
+			// because Segoe UI font is not available on WinPE
+			Font winFont = (Font) Toolkit.getDefaultToolkit().getDesktopProperty(
+				SystemInfo.isWinPE ? "win.defaultGUI.font" : "win.messagebox.font" );
 			if( winFont != null )
 				uiFont = createCompositeFont( winFont.getFamily(), winFont.getStyle(), winFont.getSize() );
 

flatlaf-core/src/main/java/com/formdev/flatlaf/MnemonicHandler.java

@@ -28,6 +28,7 @@ import java.awt.event.WindowEvent;
 import java.awt.event.WindowListener;
 import java.lang.ref.WeakReference;
 import javax.swing.AbstractButton;
+import javax.swing.JDialog;
 import javax.swing.JFrame;
 import javax.swing.JLabel;
 import javax.swing.JMenu;
@@ -137,10 +138,17 @@ class MnemonicHandler
 					// get menu bar and first menu
 					Component c = e.getComponent();
 					JRootPane rootPane = SwingUtilities.getRootPane( c );
-					Window window = (rootPane != null) ? SwingUtilities.getWindowAncestor( rootPane ) : null;
 					JMenuBar menuBar = (rootPane != null) ? rootPane.getJMenuBar() : null;
-					if( menuBar == null && window instanceof JFrame )
-						menuBar = ((JFrame)window).getJMenuBar();
+					if( menuBar == null ) {
+						// get menu bar from frame/dialog because there
+						// may be multiple nested root panes in a frame/dialog
+						// (e.g. each internal frame has its own root pane)
+						Window window = SwingUtilities.getWindowAncestor( c );
+						if( window instanceof JFrame )
+							menuBar = ((JFrame)window).getJMenuBar();
+						else if( window instanceof JDialog )
+							menuBar = ((JDialog)window).getJMenuBar();
+					}
 					JMenu firstMenu = (menuBar != null) ? menuBar.getMenu( 0 ) : null;
 
 					// select first menu and show mnemonics

flatlaf-core/src/main/java/com/formdev/flatlaf/ui/FlatMenuBarUI.java

@@ -17,6 +17,7 @@
 package com.formdev.flatlaf.ui;
 
 import java.awt.Graphics;
+import java.awt.Window;
 import java.awt.event.ActionEvent;
 import javax.swing.AbstractAction;
 import javax.swing.ActionMap;
@@ -86,7 +87,7 @@ public class FlatMenuBarUI
 
 	@Override
 	public void update( Graphics g, JComponent c ) {
-		// do not fill background if menubar is embedded into title pane
+		// paint background
 		if( isFillBackground( c ) ) {
 			g.setColor( c.getBackground() );
 			g.fillRect( 0, 0, c.getWidth(), c.getHeight() );
@@ -96,21 +97,25 @@ public class FlatMenuBarUI
 	}
 
 	protected boolean isFillBackground( JComponent c ) {
-		// paint background in opaque or having custom background color
+		// paint background if opaque or if having custom background color
 		if( c.isOpaque() || !(c.getBackground() instanceof UIResource) )
 			return true;
 
+		// paint background if menu bar is not the "main" menu bar
+		JRootPane rootPane = SwingUtilities.getRootPane( c );
+		if( rootPane == null || !(rootPane.getParent() instanceof Window) || rootPane.getJMenuBar() != c )
+			return true;
+
 		// do not paint background for unified title pane
 		if( unifiedBackground )
 			return false;
 
 		// paint background in full screen mode
-		JRootPane rootPane = SwingUtilities.getRootPane( c );
-		if( rootPane == null || FlatUIUtils.isFullScreen( rootPane ) )
+		if( FlatUIUtils.isFullScreen( rootPane ) )
 			return true;
 
 		// do not paint background if menu bar is embedded into title pane
-		return rootPane.getJMenuBar() != c || !FlatRootPaneUI.isMenuBarEmbedded( rootPane );
+		return !FlatRootPaneUI.isMenuBarEmbedded( rootPane );
 	}
 
 	//---- class TakeFocus ----------------------------------------------------

flatlaf-core/src/main/java/com/formdev/flatlaf/ui/FlatNativeWindowBorder.java

@@ -27,6 +27,7 @@ import javax.swing.JRootPane;
 import javax.swing.SwingUtilities;
 import javax.swing.UIManager;
 import javax.swing.event.ChangeListener;
+import com.formdev.flatlaf.FlatClientProperties;
 import com.formdev.flatlaf.FlatLaf;
 import com.formdev.flatlaf.FlatSystemProperties;
 import com.formdev.flatlaf.ui.JBRCustomDecorations.JBRWindowTopBorder;
@@ -62,20 +63,20 @@ public class FlatNativeWindowBorder
 		if( !isSupported() )
 			return null;
 
-		// Check whether root pane already has a window, which is the case when switching LaF.
+		// Check whether root pane already has a window, which is the case when
+		// switching from another LaF to FlatLaf.
 		// Also check whether the window is displayable, which is required to install
 		// FlatLaf native window border.
 		// If the window is not displayable, then it was probably closed/disposed but not yet removed
 		// from the list of windows that AWT maintains and returns with Window.getWindows().
 		// It could be also be a window that is currently hidden, but may be shown later.
 		Window window = SwingUtilities.windowForComponent( rootPane );
-		if( window != null && window.isDisplayable() ) {
+		if( window != null && window.isDisplayable() )
 			install( window, FlatSystemProperties.USE_WINDOW_DECORATIONS );
-			return null;
-		}
 
 		// Install FlatLaf native window border, which must be done late,
 		// when the native window is already created, because it needs access to the window.
+		// Uninstall FlatLaf native window border when window is disposed (or root pane removed).
 		// "ancestor" property change event is fired from JComponent.addNotify() and removeNotify().
 		PropertyChangeListener ancestorListener = e -> {
 			Object newValue = e.getNewValue();
@@ -99,6 +100,10 @@ public class FlatNativeWindowBorder
 		if( window instanceof JFrame ) {
 			JFrame frame = (JFrame) window;
 
+			// check whether disabled via client property
+			if( !FlatClientProperties.clientPropertyBoolean( frame.getRootPane(), FlatClientProperties.USE_WINDOW_DECORATIONS, true ) )
+				return;
+
 			// do not enable native window border if JFrame should use system window decorations
 			// and if not forced to use FlatLaf/JBR native window decorations
 			if( !JFrame.isDefaultLookAndFeelDecorated() &&
@@ -119,6 +124,10 @@ public class FlatNativeWindowBorder
 		} else if( window instanceof JDialog ) {
 			JDialog dialog = (JDialog) window;
 
+			// check whether disabled via client property
+			if( !FlatClientProperties.clientPropertyBoolean( dialog.getRootPane(), FlatClientProperties.USE_WINDOW_DECORATIONS, true ) )
+				return;
+
 			// do not enable native window border if JDialog should use system window decorations
 			// and if not forced to use FlatLaf/JBR native window decorations
 			if( !JDialog.isDefaultLookAndFeelDecorated() &&
@@ -148,7 +157,11 @@ public class FlatNativeWindowBorder
 		if( data instanceof PropertyChangeListener )
 			rootPane.removePropertyChangeListener( "ancestor", (PropertyChangeListener) data );
 
-		// uninstall native window border, except when switching to another FlatLaf theme
+		// do not uninstall when switching to another FlatLaf theme
+		if( UIManager.getLookAndFeel() instanceof FlatLaf )
+			return;
+
+		// uninstall native window border
 		Window window = SwingUtilities.windowForComponent( rootPane );
 		if( window != null )
 			uninstall( window );
@@ -158,10 +171,6 @@ public class FlatNativeWindowBorder
 		if( !hasCustomDecoration( window ) )
 			return;
 
-		// do not uninstall when switching to another FlatLaf theme
-		if( UIManager.getLookAndFeel() instanceof FlatLaf )
-			return;
-
 		// disable native window border for window
 		setHasCustomDecoration( window, false );
 
@@ -217,6 +226,13 @@ public class FlatNativeWindowBorder
 		nativeProvider.setTitleBarAppIconBounds( window, appIconBounds );
 	}
 
+	static boolean showWindow( Window window, int cmd ) {
+		if( canUseJBRCustomDecorations || !isSupported() )
+			return false;
+
+		return nativeProvider.showWindow( window, cmd );
+	}
+
 	private static void initialize() {
 		if( supported != null )
 			return;
@@ -226,8 +242,8 @@ public class FlatNativeWindowBorder
 		if( !SystemInfo.isWindows_10_orLater )
 			return;
 
-		// do not use when running in JetBrains Projector
-		if( SystemInfo.isProjector )
+		// do not use when running in JetBrains Projector or WinPE
+		if( SystemInfo.isProjector || SystemInfo.isWinPE )
 			return;
 
 		// check whether disabled via system property
@@ -238,16 +254,25 @@ public class FlatNativeWindowBorder
 /*
 			Class<?> cls = Class.forName( "com.formdev.flatlaf.natives.jna.windows.FlatWindowsNativeWindowBorder" );
 			Method m = cls.getMethod( "getInstance" );
-			nativeProvider = (Provider) m.invoke( null );
+			setNativeProvider( (Provider) m.invoke( null ) );
 */
-			nativeProvider = FlatWindowsNativeWindowBorder.getInstance();
-
-			supported = (nativeProvider != null);
+			setNativeProvider( FlatWindowsNativeWindowBorder.getInstance() );
 		} catch( Exception ex ) {
 			// ignore
 		}
 	}
 
+	/**
+	 * @since 1.1.1
+	 */
+	public static void setNativeProvider( Provider provider ) {
+		if( nativeProvider != null )
+			throw new IllegalStateException();
+
+		nativeProvider = provider;
+		supported = (nativeProvider != null);
+	}
+
 	//---- interface Provider -------------------------------------------------
 
 	public interface Provider
@@ -258,6 +283,13 @@ public class FlatNativeWindowBorder
 		void setTitleBarHitTestSpots( Window window, List<Rectangle> hitTestSpots );
 		void setTitleBarAppIconBounds( Window window, Rectangle appIconBounds );
 
+		// commands for showWindow(); values must match Win32 API
+		// https://docs.microsoft.com/en-us/windows/win32/api/winuser/nf-winuser-showwindow
+		int SW_MAXIMIZE = 3;
+		int SW_MINIMIZE = 6;
+		int SW_RESTORE = 9;
+		boolean showWindow( Window window, int cmd );
+
 		boolean isColorizationColorAffectsBorders();
 		Color getColorizationColor();
 		int getColorizationColorBalance();

flatlaf-core/src/main/java/com/formdev/flatlaf/ui/FlatRootPaneUI.java

@@ -431,7 +431,9 @@ public class FlatRootPaneUI
 				(parent instanceof JFrame &&
 				 (((JFrame)parent).getJMenuBar() == null ||
 				  !((JFrame)parent).getJMenuBar().isVisible())) ||
-				parent instanceof JDialog;
+				(parent instanceof JDialog &&
+				 (((JDialog)parent).getJMenuBar() == null ||
+				  !((JDialog)parent).getJMenuBar().isVisible()));
 		}
 	}
 }

flatlaf-core/src/main/java/com/formdev/flatlaf/ui/FlatTitlePane.java

@@ -87,6 +87,7 @@ import com.formdev.flatlaf.util.UIScale;
  * @uiDefault TitlePane.centerTitle							boolean
  * @uiDefault TitlePane.centerTitleIfMenuBarEmbedded		boolean
  * @uiDefault TitlePane.menuBarTitleGap						int
+ * @uiDefault TitlePane.icon								Icon
  * @uiDefault TitlePane.closeIcon							Icon
  * @uiDefault TitlePane.iconifyIcon							Icon
  * @uiDefault TitlePane.maximizeIcon						Icon
@@ -197,14 +198,16 @@ public class FlatTitlePane
 				}
 
 				// If menu bar is embedded and contains a horizontal glue component,
-				// then move the title label to the same location as the glue component.
+				// then move the title label to the same location as the glue component
+				// and give it the same width.
 				// This allows placing any component on the trailing side of the title pane.
 				JMenuBar menuBar = rootPane.getJMenuBar();
 				if( hasVisibleEmbeddedMenuBar( menuBar ) ) {
 					Component horizontalGlue = findHorizontalGlue( menuBar );
 					if( horizontalGlue != null ) {
 						Point glueLocation = SwingUtilities.convertPoint( horizontalGlue, 0, 0, titleLabel );
-						titleLabel.setLocation( titleLabel.getX() + glueLocation.x, titleLabel.getY() );
+						titleLabel.setBounds( titleLabel.getX() + glueLocation.x, titleLabel.getY(),
+							horizontalGlue.getWidth(), titleLabel.getHeight() );
 					}
 				}
 			}
@@ -344,7 +347,7 @@ public class FlatTitlePane
 			iconLabel.setIcon( FlatTitlePaneIcon.create( images, iconSize ) );
 		else {
 			// no icon set on window --> use default icon
-			Icon defaultIcon = UIManager.getIcon( "InternalFrame.icon" );
+			Icon defaultIcon = UIManager.getIcon( "TitlePane.icon" );
 			if( defaultIcon != null && (defaultIcon.getIconWidth() == 0 || defaultIcon.getIconHeight() == 0) )
 				defaultIcon = null;
 			if( defaultIcon != null ) {
@@ -450,9 +453,13 @@ public class FlatTitlePane
 		// This allows placing any component on the trailing side of the title pane.
 		Component horizontalGlue = findHorizontalGlue( rootPane.getJMenuBar() );
 		if( horizontalGlue != null ) {
-			int titleWidth = Math.max( titleLabel.getWidth(), 0 ); // title width may be negative
+			boolean leftToRight = getComponentOrientation().isLeftToRight();
+			int titleWidth = leftToRight
+				? buttonPanel.getX() - (leftPanel.getX() + leftPanel.getWidth())
+				: leftPanel.getX() - (buttonPanel.getX() + buttonPanel.getWidth());
+			titleWidth = Math.max( titleWidth, 0 ); // title width may be negative
 			bounds.width += titleWidth;
-			if( !getComponentOrientation().isLeftToRight() )
+			if( !leftToRight )
 				bounds.x -= titleWidth;
 		}
 
@@ -460,6 +467,9 @@ public class FlatTitlePane
 	}
 
 	protected Component findHorizontalGlue( JMenuBar menuBar ) {
+		if( menuBar == null )
+			return null;
+
 		int count = menuBar.getComponentCount();
 		for( int i = count - 1; i >= 0; i-- ) {
 			Component c = menuBar.getComponent( i );
@@ -533,10 +543,12 @@ debug*/
 	 * Iconifies the window.
 	 */
 	protected void iconify() {
-		if( window instanceof Frame ) {
-			Frame frame = (Frame) window;
+		if( !(window instanceof Frame) )
+			return;
+
+		Frame frame = (Frame) window;
+		if( !FlatNativeWindowBorder.showWindow( window, FlatNativeWindowBorder.Provider.SW_MINIMIZE ) )
 			frame.setExtendedState( frame.getExtendedState() | Frame.ICONIFIED );
-		}
 	}
 
 	/**
@@ -554,7 +566,8 @@ debug*/
 		rootPane.putClientProperty( "_flatlaf.maximizedBoundsUpToDate", true );
 
 		// maximize window
-		frame.setExtendedState( frame.getExtendedState() | Frame.MAXIMIZED_BOTH );
+		if( !FlatNativeWindowBorder.showWindow( frame, FlatNativeWindowBorder.Provider.SW_MAXIMIZE ) )
+			frame.setExtendedState( frame.getExtendedState() | Frame.MAXIMIZED_BOTH );
 	}
 
 	protected void updateMaximizedBounds() {
@@ -642,8 +655,11 @@ debug*/
 	 * Restores the window size.
 	 */
 	protected void restore() {
-		if( window instanceof Frame ) {
-			Frame frame = (Frame) window;
+		if( !(window instanceof Frame) )
+			return;
+
+		Frame frame = (Frame) window;
+		if( !FlatNativeWindowBorder.showWindow( window, FlatNativeWindowBorder.Provider.SW_RESTORE ) ) {
 			int state = frame.getExtendedState();
 			frame.setExtendedState( ((state & Frame.ICONIFIED) != 0)
 				? (state & ~Frame.ICONIFIED)
@@ -710,31 +726,34 @@ debug*/
 		if( r != null )
 			hitTestSpots.add( r );
 
-		r = getNativeHitTestSpot( menuBarPlaceholder );
-		if( r != null ) {
-			Component horizontalGlue = findHorizontalGlue( rootPane.getJMenuBar() );
-			if( horizontalGlue != null ) {
-				// If menu bar is embedded and contains a horizontal glue component,
-				// then split the hit test spot into two spots so that
-				// the glue component area can used to move the window.
+		JMenuBar menuBar = rootPane.getJMenuBar();
+		if( hasVisibleEmbeddedMenuBar( menuBar ) ) {
+			r = getNativeHitTestSpot( menuBarPlaceholder );
+			if( r != null ) {
+				Component horizontalGlue = findHorizontalGlue( menuBar );
+				if( horizontalGlue != null ) {
+					// If menu bar is embedded and contains a horizontal glue component,
+					// then split the hit test spot into two spots so that
+					// the glue component area can used to move the window.
 
-				Point glueLocation = SwingUtilities.convertPoint( horizontalGlue, 0, 0, window );
-				Rectangle r2;
-				if( getComponentOrientation().isLeftToRight() ) {
-					int trailingWidth = (r.x + r.width - HIT_TEST_SPOT_GROW) - glueLocation.x;
-					r.width -= trailingWidth;
-					r2 = new Rectangle( glueLocation.x + horizontalGlue.getWidth(), r.y, trailingWidth, r.height );
-				} else {
-					int leadingWidth = (glueLocation.x + horizontalGlue.getWidth()) - (r.x + HIT_TEST_SPOT_GROW);
-					r.x += leadingWidth;
-					r.width -= leadingWidth;
-					r2 = new Rectangle( glueLocation.x -leadingWidth, r.y, leadingWidth, r.height );
+					Point glueLocation = SwingUtilities.convertPoint( horizontalGlue, 0, 0, window );
+					Rectangle r2;
+					if( getComponentOrientation().isLeftToRight() ) {
+						int trailingWidth = (r.x + r.width - HIT_TEST_SPOT_GROW) - glueLocation.x;
+						r.width -= trailingWidth;
+						r2 = new Rectangle( glueLocation.x + horizontalGlue.getWidth(), r.y, trailingWidth, r.height );
+					} else {
+						int leadingWidth = (glueLocation.x + horizontalGlue.getWidth()) - (r.x + HIT_TEST_SPOT_GROW);
+						r.x += leadingWidth;
+						r.width -= leadingWidth;
+						r2 = new Rectangle( glueLocation.x -leadingWidth, r.y, leadingWidth, r.height );
+					}
+					r2.grow( HIT_TEST_SPOT_GROW, HIT_TEST_SPOT_GROW );
+					hitTestSpots.add( r2 );
 				}
-				r2.grow( HIT_TEST_SPOT_GROW, HIT_TEST_SPOT_GROW );
-				hitTestSpots.add( r2 );
-			}
 
-			hitTestSpots.add( r );
+				hitTestSpots.add( r );
+			}
 		}
 
 		FlatNativeWindowBorder.setTitleBarHeightAndHitTestSpots( window, titleBarHeight, hitTestSpots, appIconBounds );

flatlaf-core/src/main/java/com/formdev/flatlaf/ui/FlatUIUtils.java

@@ -185,7 +185,8 @@ public class FlatUIUtils
 
 	/**
 	 * Returns whether the given component is the permanent focus owner and
-	 * is in the active window. Used to paint focus indicators.
+	 * is in the active window or in a popup window owned by the active window.
+	 * Used to paint focus indicators.
 	 */
 	@SuppressWarnings( "unchecked" )
 	public static boolean isPermanentFocusOwner( Component c ) {
@@ -195,12 +196,18 @@ public class FlatUIUtils
 			Object value = ((JComponent)c).getClientProperty( FlatClientProperties.COMPONENT_FOCUS_OWNER );
 			if( value instanceof Predicate ) {
 				return ((Predicate<JComponent>)value).test( (JComponent) c ) &&
-					keyboardFocusManager.getActiveWindow() == SwingUtilities.windowForComponent( c );
+					isInActiveWindow( c, keyboardFocusManager.getActiveWindow() );
 			}
 		}
 
 		return keyboardFocusManager.getPermanentFocusOwner() == c &&
-			keyboardFocusManager.getActiveWindow() == SwingUtilities.windowForComponent( c );
+			isInActiveWindow( c, keyboardFocusManager.getActiveWindow() );
+	}
+
+	private static boolean isInActiveWindow( Component c, Window activeWindow ) {
+		Window window = SwingUtilities.windowForComponent( c );
+		return window == activeWindow ||
+			(window != null && window.getType() == Window.Type.POPUP && window.getOwner() == activeWindow);
 	}
 
 	/**

flatlaf-core/src/main/java/com/formdev/flatlaf/ui/FlatWindowsNativeWindowBorder.java

@@ -197,6 +197,16 @@ class FlatWindowsNativeWindowBorder
 		wndProc.appIconBounds = (appIconBounds != null) ? new Rectangle( appIconBounds ) : null;
 	}
 
+	@Override
+	public boolean showWindow( Window window, int cmd ) {
+		WndProc wndProc = windowsMap.get( window );
+		if( wndProc == null )
+			return false;
+
+		wndProc.showWindow( wndProc.hwnd, cmd );
+		return true;
+	}
+
 	@Override
 	public boolean isColorizationColorAffectsBorders() {
 		updateColorization();
@@ -299,6 +309,18 @@ class FlatWindowsNativeWindowBorder
 			this.window = window;
 
 			hwnd = installImpl( window );
+
+			// remove the OS window title bar
+			if( window instanceof JFrame && ((JFrame)window).getExtendedState() != 0 ) {
+				// In case that the frame should be maximized or minimized immediately
+				// when showing, then it is necessary to defer ::SetWindowPos() invocation.
+				// Otherwise the frame will not be maximized or minimized.
+				// This occurs only if frame.pack() was no invoked.
+				EventQueue.invokeLater( () -> {
+					updateFrame( hwnd );
+				});
+			} else
+				updateFrame( hwnd );
 		}
 
 		void uninstall() {
@@ -310,6 +332,8 @@ class FlatWindowsNativeWindowBorder
 
 		private native long installImpl( Window window );
 		private native void uninstallImpl( long hwnd );
+		private native void updateFrame( long hwnd );
+		private native void showWindow( long hwnd, int cmd );
 
 		// invoked from native code
 		private int onNcHitTest( int x, int y, boolean isOnResizeBorder ) {

flatlaf-core/src/main/java/com/formdev/flatlaf/util/SystemInfo.java

@@ -56,6 +56,7 @@ public class SystemInfo
 
 	// other
 	/** @since 1.1 */ public static final boolean isProjector;
+	/** @since 1.1.1 */ public static final boolean isWinPE;
 
 	static {
 		// platforms
@@ -91,6 +92,7 @@ public class SystemInfo
 
 		// other
 		isProjector = Boolean.getBoolean( "org.jetbrains.projector.server.enable" );
+		isWinPE = isWindows && "X:\\Windows\\System32".equalsIgnoreCase( System.getProperty( "user.dir" ) );
 	}
 
 	public static long scanVersion( String version ) {

flatlaf-extras/src/main/java/com/formdev/flatlaf/extras/FlatInspector.java

@@ -475,7 +475,7 @@ public class FlatInspector
 				f.setAccessible( true );
 				Object ui = f.get( c );
 				appendRow( buf, "UI", (ui != null ? ui.getClass().getName() : "null") );
-			} catch( NoSuchFieldException | SecurityException | IllegalArgumentException | IllegalAccessException ex ) {
+			} catch( Exception ex ) {
 				// ignore
 			}
 		}

flatlaf-natives/flatlaf-natives-jna/src/main/java/com/formdev/flatlaf/natives/jna/windows/FlatWindowsNativeWindowBorder.java

@@ -183,6 +183,16 @@ public class FlatWindowsNativeWindowBorder
 		wndProc.appIconBounds = (appIconBounds != null) ? new Rectangle( appIconBounds ) : null;
 	}
 
+	@Override
+	public boolean showWindow( Window window, int cmd ) {
+		WndProc wndProc = windowsMap.get( window );
+		if( wndProc == null )
+			return false;
+
+		User32.INSTANCE.ShowWindow( wndProc.hwnd, cmd );
+		return true;
+	}
+
 	@Override
 	public boolean isColorizationColorAffectsBorders() {
 		updateColorization();
@@ -328,7 +338,16 @@ public class FlatWindowsNativeWindowBorder
 				defaultWndProc = User32Ex.INSTANCE.SetWindowLong( hwnd, GWLP_WNDPROC, this );
 
 			// remove the OS window title bar
-			updateFrame();
+			if( window instanceof JFrame && ((JFrame)window).getExtendedState() != 0 ) {
+				// In case that the frame should be maximized or minimized immediately
+				// when showing, then it is necessary to defer ::SetWindowPos() invocation.
+				// Otherwise the frame will not be maximized or minimized.
+				// This occurs only if frame.pack() was no invoked.
+				EventQueue.invokeLater( () -> {
+					updateFrame();
+				});
+			} else
+				updateFrame();
 		}
 
 		void uninstall() {
@@ -348,7 +367,7 @@ public class FlatWindowsNativeWindowBorder
 		private void updateFrame() {
 			// this sends WM_NCCALCSIZE and removes/shows the window title bar
 			User32.INSTANCE.SetWindowPos( hwnd, hwnd, 0, 0, 0, 0,
-				SWP_FRAMECHANGED | SWP_NOMOVE | SWP_NOSIZE | SWP_NOZORDER );
+				SWP_FRAMECHANGED | SWP_NOMOVE | SWP_NOSIZE | SWP_NOZORDER | SWP_NOACTIVATE );
 		}
 
 		/**

flatlaf-natives/flatlaf-natives-windows/src/main/cpp/FlatWndProc.cpp

@@ -45,6 +45,20 @@ JNIEXPORT void JNICALL Java_com_formdev_flatlaf_ui_FlatWindowsNativeWindowBorder
 	FlatWndProc::uninstall( env, obj, reinterpret_cast<HWND>( hwnd ) );
 }
 
+extern "C"
+JNIEXPORT void JNICALL Java_com_formdev_flatlaf_ui_FlatWindowsNativeWindowBorder_00024WndProc_updateFrame
+	( JNIEnv* env, jobject obj, jlong hwnd )
+{
+	FlatWndProc::updateFrame( reinterpret_cast<HWND>( hwnd ) );
+}
+
+extern "C"
+JNIEXPORT void JNICALL Java_com_formdev_flatlaf_ui_FlatWindowsNativeWindowBorder_00024WndProc_showWindow
+	( JNIEnv* env, jobject obj, jlong hwnd, jint cmd )
+{
+	::ShowWindow( reinterpret_cast<HWND>( hwnd ), cmd );
+}
+
 //---- class FlatWndProc fields -----------------------------------------------
 
 int FlatWndProc::initialized = 0;
@@ -89,9 +103,6 @@ HWND FlatWndProc::install( JNIEnv *env, jobject obj, jobject window ) {
 	fwp->defaultWndProc = reinterpret_cast<WNDPROC>(
 		::SetWindowLongPtr( hwnd, GWLP_WNDPROC, (LONG_PTR) FlatWndProc::StaticWindowProc ) );
 
-	// remove the OS window title bar
-	fwp->updateFrame();
-
 	return hwnd;
 }
 
@@ -109,7 +120,7 @@ void FlatWndProc::uninstall( JNIEnv *env, jobject obj, HWND hwnd ) {
 	::SetWindowLongPtr( hwnd, GWLP_WNDPROC, (LONG_PTR) fwp->defaultWndProc );
 
 	// show the OS window title bar
-	fwp->updateFrame();
+	updateFrame( hwnd );
 
 	// cleanup
 	env->DeleteGlobalRef( fwp->obj );
@@ -134,10 +145,10 @@ void FlatWndProc::initIDs( JNIEnv *env, jobject obj ) {
 	  initialized = 1;
 }
 
-void FlatWndProc::updateFrame() {
+void FlatWndProc::updateFrame( HWND hwnd ) {
 	// this sends WM_NCCALCSIZE and removes/shows the window title bar
 	::SetWindowPos( hwnd, hwnd, 0, 0, 0, 0,
-		SWP_FRAMECHANGED | SWP_NOMOVE | SWP_NOSIZE | SWP_NOZORDER );
+		SWP_FRAMECHANGED | SWP_NOMOVE | SWP_NOSIZE | SWP_NOZORDER | SWP_NOACTIVATE );
 }
 
 LRESULT CALLBACK FlatWndProc::StaticWindowProc( HWND hwnd, UINT uMsg, WPARAM wParam, LPARAM lParam ) {

flatlaf-natives/flatlaf-natives-windows/src/main/cpp/FlatWndProc.h

@@ -25,6 +25,7 @@ class FlatWndProc
 public:
 	static HWND install( JNIEnv *env, jobject obj, jobject window );
 	static void uninstall( JNIEnv *env, jobject obj, HWND hwnd );
+	static void updateFrame( HWND hwnd );
 
 private:
 	static int initialized;
@@ -42,7 +43,6 @@ private:
 
 	FlatWndProc();
 	static void initIDs( JNIEnv *env, jobject obj );
-	void updateFrame();
 
 	static LRESULT CALLBACK StaticWindowProc( HWND hwnd, UINT uMsg, WPARAM wParam, LPARAM lParam );
 	LRESULT CALLBACK WindowProc( HWND hwnd, UINT uMsg, WPARAM wParam, LPARAM lParam );

flatlaf-natives/flatlaf-natives-windows/src/main/headers/com_formdev_flatlaf_ui_FlatWindowsNativeWindowBorder_WndProc.h

@@ -31,6 +31,22 @@ JNIEXPORT jlong JNICALL Java_com_formdev_flatlaf_ui_FlatWindowsNativeWindowBorde
 JNIEXPORT void JNICALL Java_com_formdev_flatlaf_ui_FlatWindowsNativeWindowBorder_00024WndProc_uninstallImpl
   (JNIEnv *, jobject, jlong);
 
+/*
+ * Class:     com_formdev_flatlaf_ui_FlatWindowsNativeWindowBorder_WndProc
+ * Method:    updateFrame
+ * Signature: (J)V
+ */
+JNIEXPORT void JNICALL Java_com_formdev_flatlaf_ui_FlatWindowsNativeWindowBorder_00024WndProc_updateFrame
+  (JNIEnv *, jobject, jlong);
+
+/*
+ * Class:     com_formdev_flatlaf_ui_FlatWindowsNativeWindowBorder_WndProc
+ * Method:    showWindow
+ * Signature: (JI)V
+ */
+JNIEXPORT void JNICALL Java_com_formdev_flatlaf_ui_FlatWindowsNativeWindowBorder_00024WndProc_showWindow
+  (JNIEnv *, jobject, jlong, jint);
+
 #ifdef __cplusplus
 }
 #endif

flatlaf-testing/dumps/uidefaults/FlatDarkLaf_1.8.0_202.txt

@@ -1175,6 +1175,7 @@ TitlePane.closePressedBackground #e8112399  60%    javax.swing.plaf.ColorUIResou
 TitlePane.closePressedForeground #ffffff    javax.swing.plaf.ColorUIResource [UI]
 TitlePane.embeddedForeground   #959595    javax.swing.plaf.ColorUIResource [UI]
 TitlePane.foreground           #bbbbbb    javax.swing.plaf.ColorUIResource [UI]
+TitlePane.icon                 [lazy] 16,16    sun.swing.ImageIconUIResource [UI]  (sun.awt.image.ToolkitImage)
 TitlePane.iconMargins          3,8,3,8    javax.swing.plaf.InsetsUIResource [UI]
 TitlePane.iconSize             16,16    javax.swing.plaf.DimensionUIResource [UI]
 TitlePane.iconifyIcon          [lazy] 44,30    com.formdev.flatlaf.icons.FlatWindowIconifyIcon [UI]

flatlaf-testing/dumps/uidefaults/FlatLightLaf_1.8.0_202.txt

@@ -1180,6 +1180,7 @@ TitlePane.closePressedBackground #e8112399  60%    javax.swing.plaf.ColorUIResou
 TitlePane.closePressedForeground #ffffff    javax.swing.plaf.ColorUIResource [UI]
 TitlePane.embeddedForeground   #595959    javax.swing.plaf.ColorUIResource [UI]
 TitlePane.foreground           #000000    javax.swing.plaf.ColorUIResource [UI]
+TitlePane.icon                 [lazy] 16,16    sun.swing.ImageIconUIResource [UI]  (sun.awt.image.ToolkitImage)
 TitlePane.iconMargins          3,8,3,8    javax.swing.plaf.InsetsUIResource [UI]
 TitlePane.iconSize             16,16    javax.swing.plaf.DimensionUIResource [UI]
 TitlePane.iconifyIcon          [lazy] 44,30    com.formdev.flatlaf.icons.FlatWindowIconifyIcon [UI]

flatlaf-testing/dumps/uidefaults/FlatTestLaf_1.8.0_202.txt

@@ -1165,6 +1165,7 @@ TextPaneUI                     com.formdev.flatlaf.ui.FlatTextPaneUI
 #---- TitlePane ----
 
 TitlePane.background           #00ff00    javax.swing.plaf.ColorUIResource [UI]
+TitlePane.borderColor          #ff0000    javax.swing.plaf.ColorUIResource [UI]
 TitlePane.buttonMaximizedHeight 22
 TitlePane.buttonSize           44,30    javax.swing.plaf.DimensionUIResource [UI]
 TitlePane.centerTitle          false
@@ -1175,6 +1176,7 @@ TitlePane.closeIcon            [lazy] 44,30    com.formdev.flatlaf.icons.FlatWin
 TitlePane.closePressedBackground #e8112399  60%    javax.swing.plaf.ColorUIResource [UI]
 TitlePane.closePressedForeground #ffffff    javax.swing.plaf.ColorUIResource [UI]
 TitlePane.foreground           #0000ff    javax.swing.plaf.ColorUIResource [UI]
+TitlePane.icon                 [lazy] 16,16    sun.swing.ImageIconUIResource [UI]  (sun.awt.image.ToolkitImage)
 TitlePane.iconMargins          3,8,3,8    javax.swing.plaf.InsetsUIResource [UI]
 TitlePane.iconSize             16,16    javax.swing.plaf.DimensionUIResource [UI]
 TitlePane.iconifyIcon          [lazy] 44,30    com.formdev.flatlaf.icons.FlatWindowIconifyIcon [UI]

flatlaf-testing/src/main/java/com/formdev/flatlaf/testing/FlatNativeWindowBorderTest.java

@@ -26,10 +26,18 @@ import java.awt.event.WindowEvent;
 import java.awt.event.WindowListener;
 import java.util.WeakHashMap;
 import javax.swing.*;
+import javax.swing.plaf.metal.MetalLookAndFeel;
+import javax.swing.plaf.nimbus.NimbusLookAndFeel;
+import com.formdev.flatlaf.FlatClientProperties;
+import com.formdev.flatlaf.FlatDarculaLaf;
+import com.formdev.flatlaf.FlatDarkLaf;
+import com.formdev.flatlaf.FlatIntelliJLaf;
+import com.formdev.flatlaf.FlatLaf;
 import com.formdev.flatlaf.FlatLightLaf;
 import com.formdev.flatlaf.extras.FlatInspector;
 import com.formdev.flatlaf.ui.FlatLineBorder;
 import com.formdev.flatlaf.ui.FlatNativeWindowBorder;
+import com.formdev.flatlaf.util.SystemInfo;
 import net.miginfocom.swing.*;
 
 /**
@@ -63,7 +71,7 @@ public class FlatNativeWindowBorderTest
 			frame.dispose();
 		}, KeyStroke.getKeyStroke( KeyEvent.VK_ESCAPE, 0, false ), JComponent.WHEN_ANCESTOR_OF_FOCUSED_COMPONENT );
 
-		frame.pack();
+		frame.setSize( new Dimension( 800, 600 ) );
 		frame.setLocationRelativeTo( null );
 		int offset = 20 * Window.getWindows().length;
 		frame.setLocation( frame.getX() + offset, frame.getY() + offset );
@@ -80,7 +88,7 @@ public class FlatNativeWindowBorderTest
 			dialog.dispose();
 		}, KeyStroke.getKeyStroke( KeyEvent.VK_ESCAPE, 0, false ), JComponent.WHEN_ANCESTOR_OF_FOCUSED_COMPONENT );
 
-		dialog.pack();
+		dialog.setSize( new Dimension( 800, 600 ) );
 		dialog.setLocationRelativeTo( owner );
 		dialog.setLocation( dialog.getX() + 20, dialog.getY() + 20 );
 		dialog.setVisible( true );
@@ -96,7 +104,6 @@ public class FlatNativeWindowBorderTest
 			hideWindowButton.setEnabled( false );
 
 		setBorder( new FlatLineBorder( new Insets( 0, 0, 0, 0 ), Color.red ) );
-		setPreferredSize( new Dimension( 800, 600 ) );
 
 		updateInfo();
 
@@ -144,6 +151,26 @@ public class FlatNativeWindowBorderTest
 				System.out.println( windowId + " windowDeactivated" );
 			}
 		} );
+
+		window.addWindowStateListener( e -> {
+			System.out.println( windowId + " windowStateChanged  " + e.getOldState() + " --> " + e.getNewState() );
+		} );
+
+		registerSwitchToLookAndFeel( "F1", FlatLightLaf.class.getName() );
+		registerSwitchToLookAndFeel( "F2", FlatDarkLaf.class.getName() );
+		registerSwitchToLookAndFeel( "F3", FlatIntelliJLaf.class.getName() );
+		registerSwitchToLookAndFeel( "F4", FlatDarculaLaf.class.getName() );
+
+		registerSwitchToLookAndFeel( "F8", FlatTestLaf.class.getName() );
+
+		if( SystemInfo.isWindows )
+			registerSwitchToLookAndFeel( "F9", "com.sun.java.swing.plaf.windows.WindowsLookAndFeel" );
+		else if( SystemInfo.isMacOS )
+			registerSwitchToLookAndFeel( "F9", "com.apple.laf.AquaLookAndFeel" );
+		else if( SystemInfo.isLinux )
+			registerSwitchToLookAndFeel( "F9", "com.sun.java.swing.plaf.gtk.GTKLookAndFeel" );
+		registerSwitchToLookAndFeel( "F12", MetalLookAndFeel.class.getName() );
+		registerSwitchToLookAndFeel( "F11", NimbusLookAndFeel.class.getName() );
 	}
 
 	private void updateInfo() {
@@ -220,6 +247,28 @@ public class FlatNativeWindowBorderTest
 			(r1.y + r1.height) - (r2.y + r2.height) );
 	}
 
+	private void registerSwitchToLookAndFeel( String keyStrokeStr, String lafClassName ) {
+		KeyStroke keyStroke = KeyStroke.getKeyStroke( keyStrokeStr );
+		if( keyStroke == null )
+			throw new IllegalArgumentException( "Invalid key stroke '" + keyStrokeStr + "'" );
+
+		((JComponent)((RootPaneContainer)window).getContentPane()).registerKeyboardAction(
+			e -> applyLookAndFeel( lafClassName ),
+			keyStroke,
+			JComponent.WHEN_ANCESTOR_OF_FOCUSED_COMPONENT );
+	}
+
+	private void applyLookAndFeel( String lafClassName ) {
+		EventQueue.invokeLater( () -> {
+			try {
+				UIManager.setLookAndFeel( lafClassName );
+				FlatLaf.updateUI();
+			} catch( Exception ex ) {
+				ex.printStackTrace();
+			}
+		} );
+	}
+
 	private void resizableChanged() {
 		if( window instanceof Frame )
 			((Frame)window).setResizable( resizableCheckBox.isSelected() );
@@ -258,6 +307,12 @@ public class FlatNativeWindowBorderTest
 		FlatNativeWindowBorder.setHasCustomDecoration( window, nativeCheckBox.isSelected() );
 	}
 
+	private void native2Changed() {
+		((RootPaneContainer)window).getRootPane().putClientProperty( FlatClientProperties.USE_WINDOW_DECORATIONS, native2CheckBox.isSelected() );
+		window.dispose();
+		window.setVisible( true );
+	}
+
 	private void revalidateLayout() {
 		window.revalidate();
 	}
@@ -298,6 +353,23 @@ public class FlatNativeWindowBorderTest
 		}
 	}
 
+	private void reopen() {
+		window.dispose();
+		window.setVisible( true );
+	}
+
+	private void reshow() {
+		window.setVisible( false );
+
+		try {
+			Thread.sleep( 100 );
+		} catch( InterruptedException ex ) {
+			// ignore
+		}
+
+		window.setVisible( true );
+	}
+
 	private void close() {
 		window.dispose();
 	}
@@ -310,12 +382,15 @@ public class FlatNativeWindowBorderTest
 		undecoratedCheckBox = new JCheckBox();
 		fullScreenCheckBox = new JCheckBox();
 		nativeCheckBox = new JCheckBox();
-		revalidateButton = new JButton();
-		replaceRootPaneButton = new JButton();
+		native2CheckBox = new JCheckBox();
 		openDialogButton = new JButton();
-		openFrameButton = new JButton();
 		hideWindowButton = new JButton();
+		reopenButton = new JButton();
+		replaceRootPaneButton = new JButton();
+		openFrameButton = new JButton();
 		showHiddenWindowButton = new JButton();
+		reshowButton = new JButton();
+		revalidateButton = new JButton();
 		hSpacer1 = new JPanel(null);
 		closeButton = new JButton();
 
@@ -331,6 +406,7 @@ public class FlatNativeWindowBorderTest
 			"[]0" +
 			"[]0" +
 			"[]" +
+			"[]" +
 			"[]"));
 
 		//---- info ----
@@ -368,15 +444,11 @@ public class FlatNativeWindowBorderTest
 		nativeCheckBox.addActionListener(e -> nativeChanged());
 		add(nativeCheckBox, "cell 0 3 3 1");
 
-		//---- revalidateButton ----
-		revalidateButton.setText("revalidate");
-		revalidateButton.addActionListener(e -> revalidateLayout());
-		add(revalidateButton, "cell 0 3 3 1");
-
-		//---- replaceRootPaneButton ----
-		replaceRootPaneButton.setText("replace rootpane");
-		replaceRootPaneButton.addActionListener(e -> replaceRootPane());
-		add(replaceRootPaneButton, "cell 0 3 3 1");
+		//---- native2CheckBox ----
+		native2CheckBox.setText("JRootPane.useWindowDecorations");
+		native2CheckBox.setSelected(true);
+		native2CheckBox.addActionListener(e -> native2Changed());
+		add(native2CheckBox, "cell 0 3 3 1");
 
 		//---- openDialogButton ----
 		openDialogButton.setText("Open Dialog");
@@ -384,27 +456,47 @@ public class FlatNativeWindowBorderTest
 		openDialogButton.addActionListener(e -> openDialog());
 		add(openDialogButton, "cell 0 4 3 1");
 
-		//---- openFrameButton ----
-		openFrameButton.setText("Open Frame");
-		openFrameButton.setMnemonic('A');
-		openFrameButton.addActionListener(e -> openFrame());
-		add(openFrameButton, "cell 0 4 3 1");
-
 		//---- hideWindowButton ----
 		hideWindowButton.setText("Hide");
 		hideWindowButton.addActionListener(e -> hideWindow());
 		add(hideWindowButton, "cell 0 4 3 1");
 
+		//---- reopenButton ----
+		reopenButton.setText("Dispose and Reopen");
+		reopenButton.addActionListener(e -> reopen());
+		add(reopenButton, "cell 0 4 3 1");
+
+		//---- replaceRootPaneButton ----
+		replaceRootPaneButton.setText("replace rootpane");
+		replaceRootPaneButton.addActionListener(e -> replaceRootPane());
+		add(replaceRootPaneButton, "cell 0 4 3 1");
+
+		//---- openFrameButton ----
+		openFrameButton.setText("Open Frame");
+		openFrameButton.setMnemonic('A');
+		openFrameButton.addActionListener(e -> openFrame());
+		add(openFrameButton, "cell 0 5 3 1");
+
 		//---- showHiddenWindowButton ----
 		showHiddenWindowButton.setText("Show hidden");
 		showHiddenWindowButton.addActionListener(e -> showHiddenWindow());
-		add(showHiddenWindowButton, "cell 0 4 3 1");
-		add(hSpacer1, "cell 0 4 3 1,growx");
+		add(showHiddenWindowButton, "cell 0 5 3 1");
+
+		//---- reshowButton ----
+		reshowButton.setText("Hide and Show");
+		reshowButton.addActionListener(e -> reshow());
+		add(reshowButton, "cell 0 5 3 1");
+
+		//---- revalidateButton ----
+		revalidateButton.setText("revalidate");
+		revalidateButton.addActionListener(e -> revalidateLayout());
+		add(revalidateButton, "cell 0 5 3 1");
+		add(hSpacer1, "cell 0 5 3 1,growx");
 
 		//---- closeButton ----
 		closeButton.setText("Close");
 		closeButton.addActionListener(e -> close());
-		add(closeButton, "cell 0 4 3 1");
+		add(closeButton, "cell 0 5 3 1");
 		// JFormDesigner - End of component initialization  //GEN-END:initComponents
 	}
 
@@ -415,12 +507,15 @@ public class FlatNativeWindowBorderTest
 	private JCheckBox undecoratedCheckBox;
 	private JCheckBox fullScreenCheckBox;
 	private JCheckBox nativeCheckBox;
-	private JButton revalidateButton;
-	private JButton replaceRootPaneButton;
+	private JCheckBox native2CheckBox;
 	private JButton openDialogButton;
-	private JButton openFrameButton;
 	private JButton hideWindowButton;
+	private JButton reopenButton;
+	private JButton replaceRootPaneButton;
+	private JButton openFrameButton;
 	private JButton showHiddenWindowButton;
+	private JButton reshowButton;
+	private JButton revalidateButton;
 	private JPanel hSpacer1;
 	private JButton closeButton;
 	// JFormDesigner - End of variables declaration  //GEN-END:variables

flatlaf-testing/src/main/java/com/formdev/flatlaf/testing/FlatNativeWindowBorderTest.jfd

@@ -1,4 +1,4 @@
-JFDML JFormDesigner: "7.0.3.1.342" Java: "15" encoding: "UTF-8"
+JFDML JFormDesigner: "7.0.3.1.342" Java: "16" encoding: "UTF-8"
 
 new FormModel {
 	contentType: "form/swing"
@@ -6,7 +6,7 @@ new FormModel {
 		add( new FormContainer( "javax.swing.JPanel", new FormLayoutManager( class net.miginfocom.swing.MigLayout ) {
 			"$layoutConstraints": "insets dialog,hidemode 3"
 			"$columnConstraints": "[][][grow,fill]"
-			"$rowConstraints": "[grow,top]para[]0[]0[][]"
+			"$rowConstraints": "[grow,top]para[]0[]0[][][]"
 		} ) {
 			name: "this"
 			add( new FormComponent( "javax.swing.JLabel" ) {
@@ -65,17 +65,11 @@ new FormModel {
 			}, new FormLayoutConstraints( class net.miginfocom.layout.CC ) {
 				"value": "cell 0 3 3 1"
 			} )
-			add( new FormComponent( "javax.swing.JButton" ) {
-				name: "revalidateButton"
-				"text": "revalidate"
-				addEvent( new FormEvent( "java.awt.event.ActionListener", "actionPerformed", "revalidateLayout", false ) )
-			}, new FormLayoutConstraints( class net.miginfocom.layout.CC ) {
-				"value": "cell 0 3 3 1"
-			} )
-			add( new FormComponent( "javax.swing.JButton" ) {
-				name: "replaceRootPaneButton"
-				"text": "replace rootpane"
-				addEvent( new FormEvent( "java.awt.event.ActionListener", "actionPerformed", "replaceRootPane", false ) )
+			add( new FormComponent( "javax.swing.JCheckBox" ) {
+				name: "native2CheckBox"
+				"text": "JRootPane.useWindowDecorations"
+				"selected": true
+				addEvent( new FormEvent( "java.awt.event.ActionListener", "actionPerformed", "native2Changed", false ) )
 			}, new FormLayoutConstraints( class net.miginfocom.layout.CC ) {
 				"value": "cell 0 3 3 1"
 			} )
@@ -87,14 +81,6 @@ new FormModel {
 			}, new FormLayoutConstraints( class net.miginfocom.layout.CC ) {
 				"value": "cell 0 4 3 1"
 			} )
-			add( new FormComponent( "javax.swing.JButton" ) {
-				name: "openFrameButton"
-				"text": "Open Frame"
-				"mnemonic": 65
-				addEvent( new FormEvent( "java.awt.event.ActionListener", "actionPerformed", "openFrame", false ) )
-			}, new FormLayoutConstraints( class net.miginfocom.layout.CC ) {
-				"value": "cell 0 4 3 1"
-			} )
 			add( new FormComponent( "javax.swing.JButton" ) {
 				name: "hideWindowButton"
 				"text": "Hide"
@@ -102,28 +88,64 @@ new FormModel {
 			}, new FormLayoutConstraints( class net.miginfocom.layout.CC ) {
 				"value": "cell 0 4 3 1"
 			} )
+			add( new FormComponent( "javax.swing.JButton" ) {
+				name: "reopenButton"
+				"text": "Dispose and Reopen"
+				addEvent( new FormEvent( "java.awt.event.ActionListener", "actionPerformed", "reopen", false ) )
+			}, new FormLayoutConstraints( class net.miginfocom.layout.CC ) {
+				"value": "cell 0 4 3 1"
+			} )
+			add( new FormComponent( "javax.swing.JButton" ) {
+				name: "replaceRootPaneButton"
+				"text": "replace rootpane"
+				addEvent( new FormEvent( "java.awt.event.ActionListener", "actionPerformed", "replaceRootPane", false ) )
+			}, new FormLayoutConstraints( class net.miginfocom.layout.CC ) {
+				"value": "cell 0 4 3 1"
+			} )
+			add( new FormComponent( "javax.swing.JButton" ) {
+				name: "openFrameButton"
+				"text": "Open Frame"
+				"mnemonic": 65
+				addEvent( new FormEvent( "java.awt.event.ActionListener", "actionPerformed", "openFrame", false ) )
+			}, new FormLayoutConstraints( class net.miginfocom.layout.CC ) {
+				"value": "cell 0 5 3 1"
+			} )
 			add( new FormComponent( "javax.swing.JButton" ) {
 				name: "showHiddenWindowButton"
 				"text": "Show hidden"
 				addEvent( new FormEvent( "java.awt.event.ActionListener", "actionPerformed", "showHiddenWindow", false ) )
 			}, new FormLayoutConstraints( class net.miginfocom.layout.CC ) {
-				"value": "cell 0 4 3 1"
+				"value": "cell 0 5 3 1"
+			} )
+			add( new FormComponent( "javax.swing.JButton" ) {
+				name: "reshowButton"
+				"text": "Hide and Show"
+				addEvent( new FormEvent( "java.awt.event.ActionListener", "actionPerformed", "reshow", false ) )
+			}, new FormLayoutConstraints( class net.miginfocom.layout.CC ) {
+				"value": "cell 0 5 3 1"
+			} )
+			add( new FormComponent( "javax.swing.JButton" ) {
+				name: "revalidateButton"
+				"text": "revalidate"
+				addEvent( new FormEvent( "java.awt.event.ActionListener", "actionPerformed", "revalidateLayout", false ) )
+			}, new FormLayoutConstraints( class net.miginfocom.layout.CC ) {
+				"value": "cell 0 5 3 1"
 			} )
 			add( new FormComponent( "com.jformdesigner.designer.wrapper.HSpacer" ) {
 				name: "hSpacer1"
 			}, new FormLayoutConstraints( class net.miginfocom.layout.CC ) {
-				"value": "cell 0 4 3 1,growx"
+				"value": "cell 0 5 3 1,growx"
 			} )
 			add( new FormComponent( "javax.swing.JButton" ) {
 				name: "closeButton"
 				"text": "Close"
 				addEvent( new FormEvent( "java.awt.event.ActionListener", "actionPerformed", "close", false ) )
 			}, new FormLayoutConstraints( class net.miginfocom.layout.CC ) {
-				"value": "cell 0 4 3 1"
+				"value": "cell 0 5 3 1"
 			} )
 		}, new FormLayoutConstraints( null ) {
 			"location": new java.awt.Point( 0, 0 )
-			"size": new java.awt.Dimension( 500, 300 )
+			"size": new java.awt.Dimension( 520, 300 )
 		} )
 	}
 }

flatlaf-testing/src/main/java/com/formdev/flatlaf/testing/FlatWindowDecorationsTest.java

@@ -75,14 +75,14 @@ public class FlatWindowDecorationsTest
 		super.addNotify();
 
 		Window window = SwingUtilities.windowForComponent( this );
-		menuBarCheckBox.setEnabled( window instanceof JFrame );
-		menuBarEmbeddedCheckBox.setEnabled( window instanceof JFrame );
-		menuBarVisibleCheckBox.setEnabled( window instanceof JFrame );
+		menuBarCheckBox.setSelected( window instanceof JFrame );
 		maximizedBoundsCheckBox.setEnabled( window instanceof Frame );
 
 		addMenuButton.setEnabled( menuBarCheckBox.isEnabled() );
+		addGlueButton.setEnabled( menuBarCheckBox.isEnabled() );
 		removeMenuButton.setEnabled( menuBarCheckBox.isEnabled() );
 		changeMenuButton.setEnabled( menuBarCheckBox.isEnabled() );
+		changeTitleButton.setEnabled( menuBarCheckBox.isEnabled() );
 
 		boolean windowHasIcons = (window != null && !window.getIconImages().isEmpty());
 		iconNoneRadioButton.setEnabled( windowHasIcons );
@@ -117,11 +117,12 @@ public class FlatWindowDecorationsTest
 
 	private void menuBarChanged() {
 		Window window = SwingUtilities.windowForComponent( this );
-		if( window instanceof JFrame ) {
+		if( window instanceof JFrame )
 			((JFrame)window).setJMenuBar( menuBarCheckBox.isSelected() ? menuBar : null );
-			window.revalidate();
-			window.repaint();
-		}
+		else if( window instanceof JDialog )
+			((JDialog)window).setJMenuBar( menuBarCheckBox.isSelected() ? menuBar : null );
+		window.revalidate();
+		window.repaint();
 	}
 
 	private void menuBarEmbeddedChanged() {
@@ -134,6 +135,48 @@ public class FlatWindowDecorationsTest
 		menuBar.setVisible( menuBarVisibleCheckBox.isSelected() );
 	}
 
+	private void rightCompChanged() {
+		removeNonMenusFromMenuBar();
+
+		if( rightCompCheckBox.isSelected() ) {
+			rightStretchCompCheckBox.setSelected( false );
+
+			JButton myButton = new JButton( "?" );
+			myButton.putClientProperty( "JButton.buttonType", "toolBarButton" );
+			myButton.setFocusable( false );
+
+			menuBar.add( Box.createGlue() );
+			menuBar.add( myButton );
+		}
+
+		menuBar.revalidate();
+		menuBar.repaint();
+	}
+
+	private void rightStretchCompChanged() {
+		removeNonMenusFromMenuBar();
+
+		if( rightStretchCompCheckBox.isSelected() ) {
+			rightCompCheckBox.setSelected( false );
+
+			menuBar.add( Box.createGlue() );
+			menuBar.add( new JProgressBar() );
+		}
+
+		menuBar.revalidate();
+		menuBar.repaint();
+	}
+
+	private void removeNonMenusFromMenuBar() {
+		Component[] components = menuBar.getComponents();
+		for( int i = components.length - 1; i >= 0; i-- ) {
+			if( !(components[i] instanceof JMenu) )
+				menuBar.remove( i );
+			else
+				break;
+		}
+	}
+
 	private void colorizeMenuBar() {
 		boolean colorize = colorizeMenuBarCheckBox.isSelected();
 		Color menuBarBackground = colorize ? new Color( 0xffccff ) : UIManager.getColor( "MenuBar.background" );
@@ -250,7 +293,7 @@ public class FlatWindowDecorationsTest
 
 	private void openDialog() {
 		Window owner = SwingUtilities.windowForComponent( this );
-		JDialog dialog = new JDialog( owner, "Dialog", ModalityType.APPLICATION_MODAL );
+		JDialog dialog = new JDialog( owner, "Dialog", ModalityType.DOCUMENT_MODAL );
 		dialog.setDefaultCloseOperation( JDialog.DISPOSE_ON_CLOSE );
 		dialog.add( new FlatWindowDecorationsTest() );
 		dialog.pack();
@@ -258,6 +301,17 @@ public class FlatWindowDecorationsTest
 		dialog.setVisible( true );
 	}
 
+	private void openFrame() {
+		FlatWindowDecorationsTest comp = new FlatWindowDecorationsTest();
+		JFrame frame = new JFrame( "Frame" );
+		frame.setDefaultCloseOperation( JFrame.DISPOSE_ON_CLOSE );
+		frame.add( comp );
+		frame.setJMenuBar( comp.menuBar );
+		frame.pack();
+		frame.setLocationRelativeTo( this );
+		frame.setVisible( true );
+	}
+
 	private void decorationStyleChanged() {
 		int style;
 		if( styleFrameRadioButton.isSelected() )
@@ -312,16 +366,18 @@ public class FlatWindowDecorationsTest
 	private void initComponents() {
 		// JFormDesigner - Component initialization - DO NOT MODIFY  //GEN-BEGIN:initComponents
 		menuBarCheckBox = new JCheckBox();
-		unifiedBackgroundCheckBox = new JCheckBox();
+		rightCompCheckBox = new JCheckBox();
 		JPanel panel3 = new JPanel();
 		addMenuButton = new JButton();
-		JButton addGlueButton = new JButton();
+		addGlueButton = new JButton();
 		removeMenuButton = new JButton();
 		changeMenuButton = new JButton();
-		JButton changeTitleButton = new JButton();
+		changeTitleButton = new JButton();
 		menuBarEmbeddedCheckBox = new JCheckBox();
-		colorizeMenuBarCheckBox = new JCheckBox();
+		rightStretchCompCheckBox = new JCheckBox();
 		menuBarVisibleCheckBox = new JCheckBox();
+		colorizeMenuBarCheckBox = new JCheckBox();
+		unifiedBackgroundCheckBox = new JCheckBox();
 		colorizeMenusCheckBox = new JCheckBox();
 		resizableCheckBox = new JCheckBox();
 		maximizedBoundsCheckBox = new JCheckBox();
@@ -344,6 +400,7 @@ public class FlatWindowDecorationsTest
 		iconTestAllRadioButton = new JRadioButton();
 		iconTestRandomRadioButton = new JRadioButton();
 		JButton openDialogButton = new JButton();
+		JButton openFrameButton = new JButton();
 		menuBar = new JMenuBar();
 		JMenu fileMenu = new JMenu();
 		JMenuItem newMenuItem = new JMenuItem();
@@ -381,6 +438,7 @@ public class FlatWindowDecorationsTest
 			// rows
 			"para[]0" +
 			"[]0" +
+			"[]0" +
 			"[]unrel" +
 			"[]0" +
 			"[]unrel" +
@@ -394,10 +452,10 @@ public class FlatWindowDecorationsTest
 		menuBarCheckBox.addActionListener(e -> menuBarChanged());
 		add(menuBarCheckBox, "cell 0 0");
 
-		//---- unifiedBackgroundCheckBox ----
-		unifiedBackgroundCheckBox.setText("unified background");
-		unifiedBackgroundCheckBox.addActionListener(e -> unifiedBackgroundChanged());
-		add(unifiedBackgroundCheckBox, "cell 1 0");
+		//---- rightCompCheckBox ----
+		rightCompCheckBox.setText("right aligned component");
+		rightCompCheckBox.addActionListener(e -> rightCompChanged());
+		add(rightCompCheckBox, "cell 1 0");
 
 		//======== panel3 ========
 		{
@@ -437,7 +495,7 @@ public class FlatWindowDecorationsTest
 			changeTitleButton.addActionListener(e -> changeTitle());
 			panel3.add(changeTitleButton, "cell 0 4");
 		}
-		add(panel3, "cell 2 0 1 6,aligny top,growy 0");
+		add(panel3, "cell 2 0 1 7,aligny top,growy 0");
 
 		//---- menuBarEmbeddedCheckBox ----
 		menuBarEmbeddedCheckBox.setText("embedded menu bar");
@@ -445,10 +503,10 @@ public class FlatWindowDecorationsTest
 		menuBarEmbeddedCheckBox.addActionListener(e -> menuBarEmbeddedChanged());
 		add(menuBarEmbeddedCheckBox, "cell 0 1");
 
-		//---- colorizeMenuBarCheckBox ----
-		colorizeMenuBarCheckBox.setText("colorize menu bar");
-		colorizeMenuBarCheckBox.addActionListener(e -> colorizeMenuBar());
-		add(colorizeMenuBarCheckBox, "cell 1 1");
+		//---- rightStretchCompCheckBox ----
+		rightStretchCompCheckBox.setText("right aligned stretching component");
+		rightStretchCompCheckBox.addActionListener(e -> rightStretchCompChanged());
+		add(rightStretchCompCheckBox, "cell 1 1");
 
 		//---- menuBarVisibleCheckBox ----
 		menuBarVisibleCheckBox.setText("menu bar visible");
@@ -456,39 +514,49 @@ public class FlatWindowDecorationsTest
 		menuBarVisibleCheckBox.addActionListener(e -> menuBarVisibleChanged());
 		add(menuBarVisibleCheckBox, "cell 0 2");
 
+		//---- colorizeMenuBarCheckBox ----
+		colorizeMenuBarCheckBox.setText("colorize menu bar");
+		colorizeMenuBarCheckBox.addActionListener(e -> colorizeMenuBar());
+		add(colorizeMenuBarCheckBox, "cell 1 2");
+
+		//---- unifiedBackgroundCheckBox ----
+		unifiedBackgroundCheckBox.setText("unified background");
+		unifiedBackgroundCheckBox.addActionListener(e -> unifiedBackgroundChanged());
+		add(unifiedBackgroundCheckBox, "cell 0 3");
+
 		//---- colorizeMenusCheckBox ----
 		colorizeMenusCheckBox.setText("colorize menus");
 		colorizeMenusCheckBox.addActionListener(e -> colorizeMenus());
-		add(colorizeMenusCheckBox, "cell 1 2");
+		add(colorizeMenusCheckBox, "cell 1 3");
 
 		//---- resizableCheckBox ----
 		resizableCheckBox.setText("resizable");
 		resizableCheckBox.setSelected(true);
 		resizableCheckBox.addActionListener(e -> resizableChanged());
-		add(resizableCheckBox, "cell 0 3");
+		add(resizableCheckBox, "cell 0 4");
 
 		//---- maximizedBoundsCheckBox ----
 		maximizedBoundsCheckBox.setText("maximized bounds (50,100, 1000,700)");
 		maximizedBoundsCheckBox.addActionListener(e -> maximizedBoundsChanged());
-		add(maximizedBoundsCheckBox, "cell 1 3");
+		add(maximizedBoundsCheckBox, "cell 1 4");
 
 		//---- undecoratedCheckBox ----
 		undecoratedCheckBox.setText("undecorated");
 		undecoratedCheckBox.addActionListener(e -> undecoratedChanged());
-		add(undecoratedCheckBox, "cell 0 4");
+		add(undecoratedCheckBox, "cell 0 5");
 
 		//---- fullScreenCheckBox ----
 		fullScreenCheckBox.setText("full screen");
 		fullScreenCheckBox.addActionListener(e -> fullScreenChanged());
-		add(fullScreenCheckBox, "cell 1 4");
+		add(fullScreenCheckBox, "cell 1 5");
 
 		//---- label1 ----
 		label1.setText("Style:");
-		add(label1, "cell 0 5");
+		add(label1, "cell 0 6");
 
 		//---- label2 ----
 		label2.setText("Icon:");
-		add(label2, "cell 1 5");
+		add(label2, "cell 1 6");
 
 		//======== panel1 ========
 		{
@@ -553,7 +621,7 @@ public class FlatWindowDecorationsTest
 			styleFileChooserRadioButton.addActionListener(e -> decorationStyleChanged());
 			panel1.add(styleFileChooserRadioButton, "cell 0 8");
 		}
-		add(panel1, "cell 0 6");
+		add(panel1, "cell 0 7");
 
 		//======== panel2 ========
 		{
@@ -582,12 +650,18 @@ public class FlatWindowDecorationsTest
 			iconTestRandomRadioButton.addActionListener(e -> iconChanged());
 			panel2.add(iconTestRandomRadioButton, "cell 0 2");
 		}
-		add(panel2, "cell 1 6");
+		add(panel2, "cell 1 7");
 
 		//---- openDialogButton ----
 		openDialogButton.setText("Open Dialog");
 		openDialogButton.addActionListener(e -> openDialog());
-		add(openDialogButton, "cell 0 7");
+		add(openDialogButton, "cell 0 8 2 1");
+
+		//---- openFrameButton ----
+		openFrameButton.setText("Open Frame");
+		openFrameButton.setMnemonic('A');
+		openFrameButton.addActionListener(e -> openFrame());
+		add(openFrameButton, "cell 0 8 2 1");
 
 		//======== menuBar ========
 		{
@@ -779,13 +853,17 @@ public class FlatWindowDecorationsTest
 
 	// JFormDesigner - Variables declaration - DO NOT MODIFY  //GEN-BEGIN:variables
 	private JCheckBox menuBarCheckBox;
-	private JCheckBox unifiedBackgroundCheckBox;
+	private JCheckBox rightCompCheckBox;
 	private JButton addMenuButton;
+	private JButton addGlueButton;
 	private JButton removeMenuButton;
 	private JButton changeMenuButton;
+	private JButton changeTitleButton;
 	private JCheckBox menuBarEmbeddedCheckBox;
-	private JCheckBox colorizeMenuBarCheckBox;
+	private JCheckBox rightStretchCompCheckBox;
 	private JCheckBox menuBarVisibleCheckBox;
+	private JCheckBox colorizeMenuBarCheckBox;
+	private JCheckBox unifiedBackgroundCheckBox;
 	private JCheckBox colorizeMenusCheckBox;
 	private JCheckBox resizableCheckBox;
 	private JCheckBox maximizedBoundsCheckBox;

flatlaf-testing/src/main/java/com/formdev/flatlaf/testing/FlatWindowDecorationsTest.jfd

@@ -1,4 +1,4 @@
-JFDML JFormDesigner: "7.0.3.1.342" Java: "15" encoding: "UTF-8"
+JFDML JFormDesigner: "7.0.3.1.342" Java: "16" encoding: "UTF-8"
 
 new FormModel {
 	contentType: "form/swing"
@@ -9,7 +9,7 @@ new FormModel {
 		add( new FormContainer( "com.formdev.flatlaf.testing.FlatTestPanel", new FormLayoutManager( class net.miginfocom.swing.MigLayout ) {
 			"$layoutConstraints": "ltr,insets dialog,hidemode 3"
 			"$columnConstraints": "[left]para[left][fill]"
-			"$rowConstraints": "para[]0[]0[]unrel[]0[]unrel[][top][]"
+			"$rowConstraints": "para[]0[]0[]0[]unrel[]0[]unrel[][top][]"
 		} ) {
 			name: "this"
 			add( new FormComponent( "javax.swing.JCheckBox" ) {
@@ -24,12 +24,12 @@ new FormModel {
 				"value": "cell 0 0"
 			} )
 			add( new FormComponent( "javax.swing.JCheckBox" ) {
-				name: "unifiedBackgroundCheckBox"
-				"text": "unified background"
+				name: "rightCompCheckBox"
+				"text": "right aligned component"
 				auxiliary() {
 					"JavaCodeGenerator.variableLocal": false
 				}
-				addEvent( new FormEvent( "java.awt.event.ActionListener", "actionPerformed", "unifiedBackgroundChanged", false ) )
+				addEvent( new FormEvent( "java.awt.event.ActionListener", "actionPerformed", "rightCompChanged", false ) )
 			}, new FormLayoutConstraints( class net.miginfocom.layout.CC ) {
 				"value": "cell 1 0"
 			} )
@@ -52,6 +52,9 @@ new FormModel {
 				add( new FormComponent( "javax.swing.JButton" ) {
 					name: "addGlueButton"
 					"text": "Add glue"
+					auxiliary() {
+						"JavaCodeGenerator.variableLocal": false
+					}
 					addEvent( new FormEvent( "java.awt.event.ActionListener", "actionPerformed", "addGlue", false ) )
 				}, new FormLayoutConstraints( class net.miginfocom.layout.CC ) {
 					"value": "cell 0 1"
@@ -79,12 +82,15 @@ new FormModel {
 				add( new FormComponent( "javax.swing.JButton" ) {
 					name: "changeTitleButton"
 					"text": "Change title"
+					auxiliary() {
+						"JavaCodeGenerator.variableLocal": false
+					}
 					addEvent( new FormEvent( "java.awt.event.ActionListener", "actionPerformed", "changeTitle", false ) )
 				}, new FormLayoutConstraints( class net.miginfocom.layout.CC ) {
 					"value": "cell 0 4"
 				} )
 			}, new FormLayoutConstraints( class net.miginfocom.layout.CC ) {
-				"value": "cell 2 0 1 6,aligny top,growy 0"
+				"value": "cell 2 0 1 7,aligny top,growy 0"
 			} )
 			add( new FormComponent( "javax.swing.JCheckBox" ) {
 				name: "menuBarEmbeddedCheckBox"
@@ -98,12 +104,12 @@ new FormModel {
 				"value": "cell 0 1"
 			} )
 			add( new FormComponent( "javax.swing.JCheckBox" ) {
-				name: "colorizeMenuBarCheckBox"
-				"text": "colorize menu bar"
+				name: "rightStretchCompCheckBox"
+				"text": "right aligned stretching component"
 				auxiliary() {
 					"JavaCodeGenerator.variableLocal": false
 				}
-				addEvent( new FormEvent( "java.awt.event.ActionListener", "actionPerformed", "colorizeMenuBar", false ) )
+				addEvent( new FormEvent( "java.awt.event.ActionListener", "actionPerformed", "rightStretchCompChanged", false ) )
 			}, new FormLayoutConstraints( class net.miginfocom.layout.CC ) {
 				"value": "cell 1 1"
 			} )
@@ -118,6 +124,26 @@ new FormModel {
 			}, new FormLayoutConstraints( class net.miginfocom.layout.CC ) {
 				"value": "cell 0 2"
 			} )
+			add( new FormComponent( "javax.swing.JCheckBox" ) {
+				name: "colorizeMenuBarCheckBox"
+				"text": "colorize menu bar"
+				auxiliary() {
+					"JavaCodeGenerator.variableLocal": false
+				}
+				addEvent( new FormEvent( "java.awt.event.ActionListener", "actionPerformed", "colorizeMenuBar", false ) )
+			}, new FormLayoutConstraints( class net.miginfocom.layout.CC ) {
+				"value": "cell 1 2"
+			} )
+			add( new FormComponent( "javax.swing.JCheckBox" ) {
+				name: "unifiedBackgroundCheckBox"
+				"text": "unified background"
+				auxiliary() {
+					"JavaCodeGenerator.variableLocal": false
+				}
+				addEvent( new FormEvent( "java.awt.event.ActionListener", "actionPerformed", "unifiedBackgroundChanged", false ) )
+			}, new FormLayoutConstraints( class net.miginfocom.layout.CC ) {
+				"value": "cell 0 3"
+			} )
 			add( new FormComponent( "javax.swing.JCheckBox" ) {
 				name: "colorizeMenusCheckBox"
 				"text": "colorize menus"
@@ -126,7 +152,7 @@ new FormModel {
 				}
 				addEvent( new FormEvent( "java.awt.event.ActionListener", "actionPerformed", "colorizeMenus", false ) )
 			}, new FormLayoutConstraints( class net.miginfocom.layout.CC ) {
-				"value": "cell 1 2"
+				"value": "cell 1 3"
 			} )
 			add( new FormComponent( "javax.swing.JCheckBox" ) {
 				name: "resizableCheckBox"
@@ -137,7 +163,7 @@ new FormModel {
 				}
 				addEvent( new FormEvent( "java.awt.event.ActionListener", "actionPerformed", "resizableChanged", false ) )
 			}, new FormLayoutConstraints( class net.miginfocom.layout.CC ) {
-				"value": "cell 0 3"
+				"value": "cell 0 4"
 			} )
 			add( new FormComponent( "javax.swing.JCheckBox" ) {
 				name: "maximizedBoundsCheckBox"
@@ -147,7 +173,7 @@ new FormModel {
 				}
 				addEvent( new FormEvent( "java.awt.event.ActionListener", "actionPerformed", "maximizedBoundsChanged", false ) )
 			}, new FormLayoutConstraints( class net.miginfocom.layout.CC ) {
-				"value": "cell 1 3"
+				"value": "cell 1 4"
 			} )
 			add( new FormComponent( "javax.swing.JCheckBox" ) {
 				name: "undecoratedCheckBox"
@@ -157,7 +183,7 @@ new FormModel {
 				}
 				addEvent( new FormEvent( "java.awt.event.ActionListener", "actionPerformed", "undecoratedChanged", false ) )
 			}, new FormLayoutConstraints( class net.miginfocom.layout.CC ) {
-				"value": "cell 0 4"
+				"value": "cell 0 5"
 			} )
 			add( new FormComponent( "javax.swing.JCheckBox" ) {
 				name: "fullScreenCheckBox"
@@ -167,19 +193,19 @@ new FormModel {
 				}
 				addEvent( new FormEvent( "java.awt.event.ActionListener", "actionPerformed", "fullScreenChanged", false ) )
 			}, new FormLayoutConstraints( class net.miginfocom.layout.CC ) {
-				"value": "cell 1 4"
+				"value": "cell 1 5"
 			} )
 			add( new FormComponent( "javax.swing.JLabel" ) {
 				name: "label1"
 				"text": "Style:"
 			}, new FormLayoutConstraints( class net.miginfocom.layout.CC ) {
-				"value": "cell 0 5"
+				"value": "cell 0 6"
 			} )
 			add( new FormComponent( "javax.swing.JLabel" ) {
 				name: "label2"
 				"text": "Icon:"
 			}, new FormLayoutConstraints( class net.miginfocom.layout.CC ) {
-				"value": "cell 1 5"
+				"value": "cell 1 6"
 			} )
 			add( new FormContainer( "javax.swing.JPanel", new FormLayoutManager( class net.miginfocom.swing.MigLayout ) {
 				"$columnConstraints": "[fill]"
@@ -288,7 +314,7 @@ new FormModel {
 					"value": "cell 0 8"
 				} )
 			}, new FormLayoutConstraints( class net.miginfocom.layout.CC ) {
-				"value": "cell 0 6"
+				"value": "cell 0 7"
 			} )
 			add( new FormContainer( "javax.swing.JPanel", new FormLayoutManager( class net.miginfocom.swing.MigLayout ) {
 				"$columnConstraints": "[fill]"
@@ -331,14 +357,22 @@ new FormModel {
 					"value": "cell 0 2"
 				} )
 			}, new FormLayoutConstraints( class net.miginfocom.layout.CC ) {
-				"value": "cell 1 6"
+				"value": "cell 1 7"
 			} )
 			add( new FormComponent( "javax.swing.JButton" ) {
 				name: "openDialogButton"
 				"text": "Open Dialog"
 				addEvent( new FormEvent( "java.awt.event.ActionListener", "actionPerformed", "openDialog", false ) )
 			}, new FormLayoutConstraints( class net.miginfocom.layout.CC ) {
-				"value": "cell 0 7"
+				"value": "cell 0 8 2 1"
+			} )
+			add( new FormComponent( "javax.swing.JButton" ) {
+				name: "openFrameButton"
+				"text": "Open Frame"
+				"mnemonic": 65
+				addEvent( new FormEvent( "java.awt.event.ActionListener", "actionPerformed", "openFrame", false ) )
+			}, new FormLayoutConstraints( class net.miginfocom.layout.CC ) {
+				"value": "cell 0 8 2 1"
 			} )
 		}, new FormLayoutConstraints( null ) {
 			"location": new java.awt.Point( 0, 0 )

flatlaf-testing/src/main/resources/com/formdev/flatlaf/testing/FlatTestLaf.properties

@@ -344,6 +344,7 @@ TitlePane.background = #0f0
 TitlePane.inactiveBackground = #080
 TitlePane.foreground = #00f
 TitlePane.inactiveForeground = #fff
+TitlePane.borderColor = #f00
 
 
 #---- ToggleButton ----

flatlaf-theme-editor/src/main/resources/com/formdev/flatlaf/themeeditor/FlatLafUIKeys.txt

@@ -873,6 +873,7 @@ TitlePane.closePressedBackground
 TitlePane.closePressedForeground
 TitlePane.embeddedForeground
 TitlePane.foreground
+TitlePane.icon
 TitlePane.iconMargins
 TitlePane.iconSize
 TitlePane.iconifyIcon