高低权限进程消息通信

2020-03-25

字数统计: 55字 | 阅读时长≈ 1分钟

测试结果

void ChangeFilter(m_hWnd, WM_NOTEPAPER_SHOWTIP, MSGFLT_ALLOW);

DWORD CMainWindow::ChangeFilter(HWND hwnd, UINT uMsg, DWORD dwMsgFlt)
{
    BOOL                fSuccess = FALSE;
    DWORD            dwMsgFltInfo = MSGFLTINFO_NONE;
    CHANGEFILTERSTRUCT  ChangeFilterStruct;

    ChangeFilterStruct.cbSize = sizeof(CHANGEFILTERSTRUCT);
    fSuccess = ChangeWindowMessageFilterEx(hwnd, uMsg, dwMsgFlt, &ChangeFilterStruct);
    dwMsgFltInfo = ChangeFilterStruct.ExtStatus;

    if (!fSuccess) {
        wprintf(L"\nChangeWindowMessageFilterEx failed with %lu", GetLastError());
        dwMsgFltInfo = -1;
    }

    return dwMsgFltInfo;
}

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