macOS native:

- removed `FlatNativeMacLibrary.getWindowPtr()` because it is too dangerous to use `windowPtr` (which is `NSWindow*`) in Java (using invalid window pointer would crash app)
- made `getNSWindow()` 20x faster
- catch exceptions in `getNSWindow()`
- digitally signed dylibs

flatlaf-natives/flatlaf-natives-macos/src/main/headers/JNIUtils.h

@@ -23,9 +23,9 @@
  */
 
 
-// from JNFJNI.h
+// from jlong_md.h
 #ifndef jlong_to_ptr
-#define jlong_to_ptr(a) ((void *)(uintptr_t)(a))
+  #define jlong_to_ptr(a) ((void*)(a))
 #endif
 
 
@@ -39,3 +39,6 @@
  				[ex name], [ex reason], [ex userInfo], [ex callStackSymbols] ); \
  		} \
 	}
+
+
+jfieldID getFieldID( JNIEnv *env, const char* className, const char* fieldName, const char* fieldSignature );

flatlaf-natives/flatlaf-natives-macos/src/main/headers/com_formdev_flatlaf_ui_FlatNativeMacLibrary.h

@@ -7,21 +7,13 @@
 #ifdef __cplusplus
 extern "C" {
 #endif
-/*
- * Class:     com_formdev_flatlaf_ui_FlatNativeMacLibrary
- * Method:    getWindowPtr
- * Signature: (Ljava/awt/Window;)J
- */
-JNIEXPORT jlong JNICALL Java_com_formdev_flatlaf_ui_FlatNativeMacLibrary_getWindowPtr
-  (JNIEnv *, jclass, jobject);
-
 /*
  * Class:     com_formdev_flatlaf_ui_FlatNativeMacLibrary
  * Method:    setWindowRoundedBorder
- * Signature: (JFFI)V
+ * Signature: (Ljava/awt/Window;FFI)Z
  */
-JNIEXPORT void JNICALL Java_com_formdev_flatlaf_ui_FlatNativeMacLibrary_setWindowRoundedBorder
-  (JNIEnv *, jclass, jlong, jfloat, jfloat, jint);
+JNIEXPORT jboolean JNICALL Java_com_formdev_flatlaf_ui_FlatNativeMacLibrary_setWindowRoundedBorder
+  (JNIEnv *, jclass, jobject, jfloat, jfloat, jint);
 
 #ifdef __cplusplus
 }