dwmapi: Add stub for DwmInvalidateIconicBitmaps.

dlls/dwmapi/dwmapi.spec

@@ -33,6 +33,7 @@
 @ stdcall DwmGetGraphicsStreamTransformHint(long ptr)
 @ stdcall DwmGetTransportAttributes(ptr ptr ptr)
 @ stdcall DwmGetWindowAttribute(ptr long ptr long)
+@ stdcall DwmInvalidateIconicBitmaps(ptr)
 @ stdcall DwmIsCompositionEnabled(ptr)
 @ stub DwmModifyPreviousDxFrameDuration
 @ stub DwmQueryThumbnailSourceSize

dlls/dwmapi/dwmapi_main.c

@@ -108,6 +108,18 @@ HRESULT WINAPI DwmFlush(void)
 }
 
 /**********************************************************************
+ *        DwmInvalidateIconicBitmaps      (DWMAPI.@)
+ */
+HRESULT WINAPI DwmInvalidateIconicBitmaps(HWND hwnd)
+{
+    static BOOL once;
+
+    if (!once++) FIXME("(%p) stub\n", hwnd);
+
+    return E_NOTIMPL;
+}
+
+/**********************************************************************
  *           DwmSetWindowAttribute         (DWMAPI.@)
  */
 HRESULT WINAPI DwmSetWindowAttribute(HWND hwnd, DWORD attributenum, LPCVOID attribute, DWORD size)

include/dwmapi.h

@@ -116,6 +116,7 @@ DWMAPI DwmEnableMMCSS(BOOL);
 DWMAPI DwmExtendFrameIntoClientArea(HWND,const MARGINS*);
 DWMAPI DwmGetColorizationColor(DWORD*,BOOL);
 DWMAPI DwmGetCompositionTimingInfo(HWND,DWM_TIMING_INFO*);
+DWMAPI DwmInvalidateIconicBitmaps(HWND);
 DWMAPI DwmIsCompositionEnabled(BOOL*);
 DWMAPI DwmRegisterThumbnail(HWND, HWND, PHTHUMBNAIL);
 DWMAPI DwmSetWindowAttribute(HWND, DWORD, LPCVOID, DWORD);