Handle null wndPtr for mdi window.

4a6af35b · Guy Albertelli · Alexandre Julliard · d6ade697 · 4a6af35b
Commit 4a6af35b authored Mar 13, 1999 by Guy Albertelli Committed by Alexandre Julliard Mar 13, 1999
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mdi.c windows/mdi.c +7 -0

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--- a/windows/mdi.c
+++ b/windows/mdi.c
@@ -1126,6 +1126,13 @@ LRESULT WINAPI DefFrameProc16( HWND16 hwnd, HWND16 hwndMDIClient,
 	{
 	  case WM_COMMAND:
 	    wndPtr = WIN_FindWndPtr(hwndMDIClient);
+
+            if (!wndPtr) {
+               ERR(mdi,"null wndPtr for mdi window hwndMDIClient=%04x\n",
+                             hwndMDIClient);
+               return 0;
+            } 
+
 	    ci     = (MDICLIENTINFO*)wndPtr->wExtra;

 	    /* check for possible syscommands for maximized MDI child */