SetWindowSizeCallback: user configurable callback

src/core.c

@@ -373,6 +373,7 @@ typedef struct CoreData {
 
         char **dropFilesPath;               // Store dropped files paths as strings
         int dropFilesCount;                 // Count dropped files strings
+        void (*sizeCallback)(int, int);     // Additional user configurable window size callback
 
     } Window;
 #if defined(PLATFORM_ANDROID)
@@ -1050,6 +1051,11 @@ void SetWindowMinSize(int width, int height)
 #endif
 }
 
+// Set window size callback
+void SetWindowSizeCallback(void (*callback)(int, int)) {
+    CORE.Window.sizeCallback = callback;
+}
+
 // Set window dimensions
 // TODO: Issues on HighDPI scaling
 void SetWindowSize(int width, int height)
@@ -3901,6 +3907,8 @@ static void WindowSizeCallback(GLFWwindow *window, int width, int height)
     // NOTE: Postprocessing texture is not scaled to new size
 
     CORE.Window.resized = true;
+    if (CORE.Window.sizeCallback)
+        CORE.Window.sizeCallback(width, height);
 }
 
 // GLFW3 WindowIconify Callback, runs when window is minimized/restored
@@ -5234,6 +5242,9 @@ void UWPResizeEvent(int width, int height)
     // NOTE: Postprocessing texture is not scaled to new size
 
     CORE.Window.resized = true;
+
+    if (CORE.Window.sizeCallback)
+        CORE.Window.sizeCallback(width, height);
 }
 
 void UWPActivateGamepadEvent(int gamepad, bool active)

src/raylib.h

@@ -884,6 +884,7 @@ RLAPI void SetWindowPosition(int x, int y);                       // Set window
 RLAPI void SetWindowMonitor(int monitor);                         // Set monitor for the current window (fullscreen mode)
 RLAPI void SetWindowMinSize(int width, int height);               // Set window minimum dimensions (for FLAG_WINDOW_RESIZABLE)
 RLAPI void SetWindowSize(int width, int height);                  // Set window dimensions
+RLAPI void SetWindowSizeCallback(void (*callback)(int, int));     // Set window size callback
 RLAPI void *GetWindowHandle(void);                                // Get native window handle
 RLAPI int GetScreenWidth(void);                                   // Get current screen width
 RLAPI int GetScreenHeight(void);                                  // Get current screen height