1.非模态對話框
m_pdlg=new CMydlg;
m_pdlg->Create(IDD_MYDIALOG,this);
m_pdlg->ShowWindow(SW_SHOW);
m_pdlg->SetWindowPos(&wndTopMost,0,0,0,0,SWP_NOMOVE|SWP_NOSIZE);
2.模态對話框
在非模态對話框的初始換函數裡加入
::SetWindowPos(AfxGetMainWnd()->m_hWnd,HWND_TOPMOST,
-1,-1,-1,-1,SWP_NOMOVE/SWP_NOSIZE);