【MFC】禁用鼠标拖拽标题栏移动窗口

解决方案:重载WM_NCLBUTTONDOWN消息

(1) .h 文件

afx_msg void OnNcLButtonDown(UINT nHitTest, CPoint point);

(2) .cpp 文件

BEGIN_MESSAGE_MAP(MeetingFullScreenDlg, CDialogEx)
    ON_WM_NCLBUTTONDOWN()
END_MESSAGE_MAP()

void MeetingFullScreenDlg::OnNcLButtonDown(UINT nHitTest, CPoint point)
{
    if (HTCAPTION == nHitTest)
    {
        return;
    }
    CDialog::OnNcLButtonDown(nHitTest, point);
}