91 lines
1.4 KiB
C++
91 lines
1.4 KiB
C++
/*++
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Copyright (c) 2000 Microsoft Corporation
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Module Name:
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NullHwndInMessageBox.cpp
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Abstract:
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This shim replaces "non window" handles in msgbox with NULL to tell it
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that desktop is owner.
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Notes:
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This is a general purpose shim.
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History:
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12/08/1999 a-jamd Created
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--*/
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#include "precomp.h"
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IMPLEMENT_SHIM_BEGIN(NullHwndInMessageBox)
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#include "ShimHookMacro.h"
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APIHOOK_ENUM_BEGIN
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APIHOOK_ENUM_ENTRY(MessageBoxA)
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APIHOOK_ENUM_ENTRY(MessageBoxW)
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APIHOOK_ENUM_END
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/*++
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This stub function sets hWnd to NULL if it is not a valid window.
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--*/
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int
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APIHOOK(MessageBoxA)(
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HWND hWnd,
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LPCSTR lpText,
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LPCSTR lpCaption,
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UINT uType
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)
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{
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if (IsWindow(hWnd) == 0) {
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hWnd = NULL;
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}
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return ORIGINAL_API(MessageBoxA)(hWnd, lpText, lpCaption, uType);
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}
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/*++
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This stub function sets hWnd to NULL if it is not a valid window.
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--*/
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int
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APIHOOK(MessageBoxW)(
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HWND hWnd,
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LPCWSTR lpText,
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LPCWSTR lpCaption,
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UINT uType
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)
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{
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if (IsWindow(hWnd) == 0) {
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hWnd = NULL;
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}
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return ORIGINAL_API(MessageBoxW)(hWnd, lpText, lpCaption, uType);
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}
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/*++
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Register hooked functions
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--*/
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HOOK_BEGIN
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APIHOOK_ENTRY(USER32.DLL, MessageBoxA)
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APIHOOK_ENTRY(USER32.DLL, MessageBoxW)
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HOOK_END
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IMPLEMENT_SHIM_END
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