X-Git-Url: http://git.mutantstargoat.com/user/nuclear/?a=blobdiff_plain;f=src%2Fmswin%2Ffg_main_mswin.c;h=3ecde1f59c34bd392d23918cd6874c8597abbea6;hb=904f551774d232dbad1d657a305449ec359c9f57;hp=981acad1baa4b3f01fb20b77226c27dd4fff4f73;hpb=2272bd5a70b8bac63e1535fee6257cc4595f36e7;p=freeglut

diff --git a/src/mswin/fg_main_mswin.c b/src/mswin/fg_main_mswin.c
index 981acad..3ecde1f 100644
--- a/src/mswin/fg_main_mswin.c
+++ b/src/mswin/fg_main_mswin.c
@@ -432,6 +432,18 @@ LRESULT CALLBACK fgPlatformWindowProc( HWND hWnd, UINT uMsg, WPARAM wParam,
             SFG_Window* saved_window = fgStructure.CurrentWindow;
             RECT windowRect;
             GetWindowRect( window->Window.Handle, &windowRect );
+            
+            if (window->Parent)
+            {
+                /* For child window, we should return relative to upper-left
+                * of parent's client area.
+                */
+                POINT topleft = {windowRect.left,windowRect.top};
+
+                ScreenToClient(window->Parent->Window.Handle,&topleft);
+                windowRect.left = topleft.x;
+                windowRect.top  = topleft.y;
+            }
 
             INVOKE_WCB( *window, Position, ( windowRect.left, windowRect.top ) );
             fgSetWindow(saved_window);