如何實現在對話框的非標題欄處拖動對話框

1.添加消息映射： ON_WM_NCHITTEST()

2.對應的消息映射函數實現：

LRESULT CCamerDlg::OnNcHitTest(CPoint point)
{
 UINT hit=CDialog::OnNcHitTest(point);

 return ((hit == HTCLIENT)?HTCAPTION:hit);
}