//点击该按钮创建子窗口61
void CCDockDlgDlg::OnBtnCrtdlg()
{
// TODO: Add your control notification handler code here
CChildDlg *dlg_Child = new CChildDlg;
dlg_Child->Create(IDD_CHILD_DLG);
dlg_Child->ShowWindow(SW_SHOW);
}
当创建3个时,如何将这三个合并在一个对话框中,类似QQ的合并窗口一样?