added note about maximizing behavior on Windows (when the maximize

[freeglut] / src / mswin / fg_main_mswin.c

diff --git a/src/mswin/fg_main_mswin.c b/src/mswin/fg_main_mswin.c
index d778d67..3013f80 100644 (file)
--- a/src/mswin/fg_main_mswin.c
+++ b/src/mswin/fg_main_mswin.c
@@ -63,8 +63,8 @@ struct GXKeyList gxKeyList;
  * and the window rect from the client area given the style of the window
  * (or a valid window pointer from which the style can be queried).
  */
-extern void fghComputeWindowRectFromClientArea_QueryWindow( const SFG_Window *window, RECT *clientRect, BOOL posIsOutside );
-extern RECT fghGetClientArea                              ( const SFG_Window *window,                   BOOL wantPosOutside );
+extern void fghComputeWindowRectFromClientArea_QueryWindow( RECT *clientRect, const SFG_Window *window, BOOL posIsOutside );
+extern void fghGetClientArea                              ( RECT *clientRect, const SFG_Window *window, BOOL wantPosOutside );
 
 
 void fgPlatformReshapeWindow ( SFG_Window *window, int width, int height )
@@ -75,6 +75,16 @@ void fgPlatformReshapeWindow ( SFG_Window *window, int width, int height )
      * For windowed mode, get the current position of the
      * window and resize taking the size of the frame
      * decorations into account.
+     *
+     * Note on maximizing behavior of Windows: the resize borders are off
+     * the screen such that the client area extends all the way from the
+     * leftmost corner to the rightmost corner to maximize screen real
+     * estate. A caption is still shown however to allow interaction with
+     * the window controls. This is default behavior of Windows that
+     * FreeGLUT sticks with. To alter, one would have to check if
+     * WS_MAXIMIZE style is set when a resize event is triggered, and
+     * then manually correct the windowRect to put the borders back on
+     * screen.
      */
 
     /* "GetWindowRect" returns the pixel coordinates of the outside of the window */
@@ -86,7 +96,7 @@ void fgPlatformReshapeWindow ( SFG_Window *window, int width, int height )
 
     if (window->Parent == NULL)
         /* get the window rect from this to feed to SetWindowPos, correct for window decorations */
-        fghComputeWindowRectFromClientArea_QueryWindow(window,&windowRect,TRUE);
+        fghComputeWindowRectFromClientArea_QueryWindow(&windowRect,window,TRUE);
     else
     {
         /* correct rect for position client area of parent window
@@ -96,11 +106,8 @@ void fgPlatformReshapeWindow ( SFG_Window *window, int width, int height )
          * for them.
          */
         RECT parentRect;
-        parentRect = fghGetClientArea( window->Parent, FALSE );
-        windowRect.left   -= parentRect.left;
-        windowRect.right  -= parentRect.left;
-        windowRect.top    -= parentRect.top;
-        windowRect.bottom -= parentRect.top;
+        fghGetClientArea( &parentRect, window->Parent, FALSE );
+        OffsetRect(&windowRect,-parentRect.left,-parentRect.top);
     }
     
     /* Do the actual resizing */