angel/FlatLaf
1
0
Fork 0
mirror of https://github.com/JFormDesigner/FlatLaf.git synced 2026-02-15 16:27:13 -06:00
Code Issues Packages Projects Releases Wiki Activity

Window decorations: fixed black line sometimes painted on top of (native) window border on Windows 11 (issue #852)

Browse Source 
Windows binaries built and signed locally in clean workspace
This commit is contained in:
Karl Tauber
2024-06-21 19:58:36 +02:00
parent c95e95ef67
commit 72a4c00e72
7 changed files with 43 additions and 0 deletions
Download Patch File Download Diff File Expand all files Collapse all files

23
flatlaf-natives/flatlaf-natives-jna/src/main/java/com/formdev/flatlaf/natives/jna/windows/FlatWindowsNativeWindowBorder.java
View File

@@ -60,8 +60,11 @@ import com.sun.jna.platform.win32.WinDef.LRESULT;
import com.sun.jna.platform.win32.WinDef.RECT;
import com.sun.jna.platform.win32.WinDef.UINT_PTR;
import com.sun.jna.platform.win32.WinDef.WPARAM;
import com.sun.jna.platform.win32.WinError;
import com.sun.jna.platform.win32.WinUser.HMONITOR;
import com.sun.jna.platform.win32.WinUser.WindowProc;
import com.sun.jna.ptr.IntByReference;
import com.sun.jna.win32.StdCallLibrary;
import com.sun.jna.win32.W32APIOptions;
//
@@ -615,6 +618,14 @@ public class FlatWindowsNativeWindowBorder
if( hasAutohideTaskbar( ABE_RIGHT, monitorInfo.rcMonitor ) )
params.rgrc[0].right--;
}
} else if( SystemInfo.isWindows_11_orLater ) {
// For Windows 11, add border thickness to top, which is necessary to make the whole Java area visible.
// This also avoids that a black line is sometimes painted on top window border.
// Note: Do not increase top on Windows 10 because this would not hide Windows title bar.
IntByReference borderThickness = new IntByReference();
if( DWMApi.INSTANCE.DwmGetWindowAttribute( hwnd, DWMApi.DWMWA_VISIBLE_FRAME_BORDER_THICKNESS,
borderThickness.getPointer(), 4 ) == WinError.S_OK.intValue() )
params.rgrc[0].top += borderThickness.getValue();
}
// write changed params back to native memory
@@ -898,6 +909,18 @@ public class FlatWindowsNativeWindowBorder
HBRUSH CreateSolidBrush( DWORD color );
}
//---- interface DWMApi ---------------------------------------------------
private interface DWMApi
extends StdCallLibrary
{
DWMApi INSTANCE = Native.load( "dwmapi", DWMApi.class, W32APIOptions.DEFAULT_OPTIONS );
int DWMWA_VISIBLE_FRAME_BORDER_THICKNESS = 37;
int DwmGetWindowAttribute( HWND hwnd, int dwAttribute, Pointer pvAttribute, int cbAttribute );
}
//---- class NCCALCSIZE_PARAMS --------------------------------------------
@FieldOrder( { "rgrc" } )