MessageBoxTimeout.cpp

typedef int(__stdcall *MSGBOXAAPI)(IN HWND hWnd,
    IN LPCSTR lpText, IN LPCSTR lpCaption,
    IN UINT uType, IN WORD wLanguageId, IN DWORD dwMilliseconds);
typedef int(__stdcall *MSGBOXWAPI)(IN HWND hWnd,
    IN LPCWSTR lpText, IN LPCWSTR lpCaption,
    IN UINT uType, IN WORD wLanguageId, IN DWORD dwMilliseconds);

int MessageBoxTimeoutA(IN HWND hWnd, IN LPCSTR lpText,
    IN LPCSTR lpCaption, IN UINT uType,
    IN WORD wLanguageId, IN DWORD dwMilliseconds);
int MessageBoxTimeoutW(IN HWND hWnd, IN LPCWSTR lpText,
    IN LPCWSTR lpCaption, IN UINT uType,
    IN WORD wLanguageId, IN DWORD dwMilliseconds);

#ifdef UNICODE
#define MessageBoxTimeout MessageBoxTimeoutW
#else
#define MessageBoxTimeout MessageBoxTimeoutA
#endif

#define MB_TIMEDOUT 32000

int MessageBoxTimeoutA(HWND hWnd, LPCSTR lpText,
    LPCSTR lpCaption, UINT uType, WORD wLanguageId,
    DWORD dwMilliseconds)
{
    static MSGBOXAAPI MsgBoxTOA = (MSGBOXAAPI)GetProcAddress(GetModuleHandleA("user32.dll"), "MessageBoxTimeoutA");

    return MsgBoxTOA(hWnd, lpText, lpCaption, uType, wLanguageId, dwMilliseconds);
}

int MessageBoxTimeoutW(HWND hWnd, LPCWSTR lpText,
    LPCWSTR lpCaption, UINT uType, WORD wLanguageId,
    DWORD dwMilliseconds)
{
    static MSGBOXWAPI MsgBoxTOW = (MSGBOXWAPI)GetProcAddress(GetModuleHandleA("user32.dll"), "MessageBoxTimeoutW");

    return MsgBoxTOW(hWnd, lpText, lpCaption, uType, wLanguageId, dwMilliseconds);
}