- if (pParams->message == WM_WINDOWPOSCHANGED) {
- /* We handle WM_WINDOWPOSCHANGED instead of WM_SIZE because according to
- * http://blogs.msdn.com/oldnewthing/archive/2008/01/15/7113860.aspx
- * WM_SIZE is generated from WM_WINDOWPOSCHANGED by DefWindowProc so it
- * can be masked out by the application. */
- LPWINDOWPOS lpWindowPos = (LPWINDOWPOS)pParams->lParam;
- if((lpWindowPos->flags & SWP_SHOWWINDOW) ||
- !(lpWindowPos->flags & SWP_NOMOVE) ||
- !(lpWindowPos->flags & SWP_NOSIZE)) {
- fb = stw_framebuffer_from_hwnd( pParams->hwnd );
- if(fb) {
- /* Size in WINDOWPOS includes the window frame, so get the size
- * of the client area via GetClientRect. */
- stw_framebuffer_get_size(fb);
- stw_framebuffer_release(fb);
+ /* We check that the stw_dev object is initialized before we try to do
+ * anything with it. Otherwise, in multi-threaded programs there's a
+ * chance of executing this code before the stw_dev object is fully
+ * initialized.
+ */
+ if (stw_dev && stw_dev->initialized) {
+ if (pParams->message == WM_WINDOWPOSCHANGED) {
+ /* We handle WM_WINDOWPOSCHANGED instead of WM_SIZE because according
+ * to http://blogs.msdn.com/oldnewthing/archive/2008/01/15/7113860.aspx
+ * WM_SIZE is generated from WM_WINDOWPOSCHANGED by DefWindowProc so it
+ * can be masked out by the application.
+ */
+ LPWINDOWPOS lpWindowPos = (LPWINDOWPOS)pParams->lParam;
+ if ((lpWindowPos->flags & SWP_SHOWWINDOW) ||
+ !(lpWindowPos->flags & SWP_NOMOVE) ||
+ !(lpWindowPos->flags & SWP_NOSIZE)) {
+ fb = stw_framebuffer_from_hwnd( pParams->hwnd );
+ if (fb) {
+ /* Size in WINDOWPOS includes the window frame, so get the size
+ * of the client area via GetClientRect.
+ */
+ stw_framebuffer_get_size(fb);
+ stw_framebuffer_unlock(fb);
+ }