Fix crash when no theme is set and application ignores errors.

399842b1 · Kevin Koltzau · Alexandre Julliard · e5013299 · 399842b1
Commit 399842b1 authored Nov 09, 2004 by Kevin Koltzau Committed by Alexandre Julliard Nov 09, 2004
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system.c dlls/uxtheme/system.c +4 -0

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--- a/dlls/uxtheme/system.c
+++ b/dlls/uxtheme/system.c
@@ -405,6 +405,10 @@ HRESULT WINAPI HitTestThemeBackground(HTHEME hTheme, HDC hdc, int iPartId,
 BOOL WINAPI IsThemePartDefined(HTHEME hTheme, int iPartId, int iStateId)
 {
    TRACE("(%p,%d,%d)\n", hTheme, iPartId, iStateId);
+    if(!hTheme) {
+        SetLastError(E_HANDLE);
+        return FALSE;
+    }
    if(MSSTYLES_FindPartState(hTheme, iPartId, iStateId, NULL))
        return TRUE;
    return FALSE;