fix (win32): No more hanging up when the viewport it resized. Removed WM_SIZING as it is not needed and was processed incorrectly (#2401).

Reworked the message loop so that it processes all pending messages rather than one message per frame (#544, #1571, #2357).

Continue rendering when the viewport is being moved or resized by the user. Sending resize events, too (#1896, #2217).

Removed unused width/height fields from mvViewport.

Author: v-ein

src/dearpygui_commands.h

@@ -2156,7 +2156,7 @@ create_viewport(PyObject* self, PyObject* args, PyObject* kwargs)
 	))
 		return GetPyNone();
 
-	mvViewport* viewport = mvCreateViewport(width, height);
+	mvViewport* viewport = mvCreateViewport();
 	if (PyObject* item = PyDict_GetItemString(kwargs, "clear_color")) viewport->clearColor = ToColor(item);
 	if (PyObject* item = PyDict_GetItemString(kwargs, "small_icon")) viewport->small_icon = ToString(item);
 	if (PyObject* item = PyDict_GetItemString(kwargs, "large_icon")) viewport->large_icon = ToString(item);

src/mvViewport.h

@@ -39,8 +39,6 @@ struct mvViewport
 	// position/size
 	b8  sizeDirty    = false;
 	b8  posDirty     = false;
-	u32 width        = 0;
-	u32 height       = 0;
 	u32 minwidth     = 250;
 	u32 minheight    = 250;
 	u32 maxwidth     = 10000;
@@ -56,7 +54,7 @@ struct mvViewport
 
 };
 
-mvViewport* mvCreateViewport  (u32 width, u32 height);
+mvViewport* mvCreateViewport  ();
 void        mvCleanupViewport (mvViewport& viewport);
 void        mvShowViewport    (mvViewport& viewport, b8 minimized, b8 maximized);
 void        mvMaximizeViewport(mvViewport& viewport);

src/mvViewport_apple.mm

@@ -11,11 +11,9 @@
 #include <stdio.h>
 
  mvViewport*
-mvCreateViewport(unsigned width, unsigned height)
+mvCreateViewport()
 {
     auto viewport = new mvViewport();
-    viewport->width = width;
-    viewport->height = height;
     viewport->platformSpecifics = new mvViewportData();
     return viewport;
 }
@@ -236,9 +234,6 @@
         viewportData->layer.drawableSize = CGSizeMake(width, height);
         id <CAMetalDrawable> drawable = [viewportData->layer nextDrawable];
 
-        viewport->width = (unsigned)width;
-        viewport->height = (unsigned)height;
-
         id <MTLCommandBuffer> commandBuffer = [graphicsData->commandQueue commandBuffer];
         graphicsData->renderPassDescriptor.colorAttachments[0].clearColor = MTLClearColorMake(viewport->clearColor.r,
                                                                                     viewport->clearColor.g,

src/mvViewport_linux.cpp

@@ -107,11 +107,9 @@ mvPrerender()
 }
 
  mvViewport*
-mvCreateViewport(unsigned width, unsigned height)
+mvCreateViewport()
 {
     mvViewport* viewport = new mvViewport();
-    viewport->width = width;
-    viewport->height = height;
     viewport->platformSpecifics = new mvViewportData();
     return viewport;
 }