NtUserChangeWindowMessageFilterEx - NtDoc

#ifndef _NTUSER_H

NTSYSCALLAPI
BOOL
NTAPI
NtUserChangeWindowMessageFilterEx(
    _In_ HWND WindowHandle,
    _In_ ULONG message,
    _In_ ULONG action,
    _Inout_ PCHANGEFILTERSTRUCT pChangeFilterStruct
    );

#endif
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