Create创建的SHostWnd窗口无法移动

JK9093

继承的SHostWnd,用如下的代码创建显示后无法移动，是我用法有问题吗？

s_pDlgMsg = new CaptureMessageDlg(msg);
s_pDlgMsg->Create(SApplication::getSingleton().GetMainWnd(), WS_POPUPWINDOW, NULL, 0, 0, 0, 0);
s_pDlgMsg->SendMessage(WM_INITDIALOG);
s_pDlgMsg->ShowWindow(SW_SHOW);