OpenGL windows that were completely off-screen caused problems

with some graphics cards on WIN32 (STR #831) git-svn-id: file:///fltk/svn/fltk/branches/branch-1.1@4332 ea41ed52-d2ee-0310-a9c1-e6b18d33e121
fltk · May 12, 2005 · bce23d1 · bce23d1
1 parent 7c22553
commit bce23d1
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Showing 2 changed files with 7 additions and 1 deletion.
diff --git a/CHANGES b/CHANGES
@@ -2,6 +2,8 @@ CHANGES IN FLTK 1.1.7
 
 	- Documentation fixes (STR #648, STR #692, STR #730, STR
 	  #744, STR #745)
+	- OpenGL windows that were completely off-screen caused
+	  problems with some graphics cards on WIN32 (STR #831)
 	- Multiple screen support didn't work on Windows NT and
 	  95 (STR #821)
 	- Fl_Scrollbar didn't compute the correct knob size when

diff --git a/src/Fl_win32.cxx b/src/Fl_win32.cxx
@@ -816,7 +816,11 @@ static LRESULT CALLBACK WndProc(HWND hWnd, UINT uMsg, WPARAM wParam, LPARAM lPar
 
   case WM_MOVE:
     resize_bug_fix = window;
-    window->position(LOWORD(lParam), HIWORD(lParam));
+    int nx = LOWORD(lParam);
+    int ny = HIWORD(lParam);
+    if (nx & 0x8000) nx -= 65536;
+    if (ny & 0x8000) ny -= 65536;
+    window->position(nx, ny);
     break;
 
   case WM_SETCURSOR: