From bce23d108a5ab76022d3c3884b69567039fb204a Mon Sep 17 00:00:00 2001
From: Michael R Sweet <michael.r.sweet@gmail.com>
Date: Thu, 12 May 2005 14:08:02 +0000
Subject: 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
---
 src/Fl_win32.cxx | 6 +++++-
 1 file changed, 5 insertions(+), 1 deletion(-)

(limited to 'src')

diff --git a/src/Fl_win32.cxx b/src/Fl_win32.cxx
index 2dc3f2b36..56acef620 100644
--- 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:
-- 
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