MFC-窗口指针

内容转载自https://www.bilibili.com/video/BV1AT4y137gS?p=24

 

void CMFCApplication10Dlg::OnBnClickedButton1()
{
    // TODO:  在此添加控件通知处理程序代码

    //得到当前窗口句柄
    HWND hWnd = GetSafeHwnd();

    //由窗口句柄得到窗口指针
    CWnd* pWnd = CWnd::FromHandle(hWnd);

    //打印窗口地址(地址用16进制显示)
    CString s;
    s.Format("pWnd = 0x%X
this = 0x%X
", pWnd, this);
    AfxMessageBox(s);
}

void CMFCApplication10Dlg::OnBnClickedButton2()
{
    // TODO:  在此添加控件通知处理程序代码

    //得到应用程序指针
    CMFCApplication10App* pApp = (CMFCApplication10App*)AfxGetApp();

    //获得主窗口的指针
    CWnd* pMainWnd = pApp->m_pMainWnd;

    //打印主窗口的地址
    CString s;
    s.Format("pMainWnd = 0x%X
this = 0x%X", pMainWnd, this);
    AfxMessageBox(s);
}