void CWork::DoDataExchange(CDataExchange* pDX){CDialog::DoDataExchange(pDX);SetWindowPos(NULL,0,0,900,460,SWP_NOMOVE | SWP_NOZORDER);

上面是初始化窗体的大小。

增加事件响应来 实现窗体的折叠，展开（改变大小）

//折叠窗体void CWork::Onkuozhan() {    // TODO: Add your control notification handler code here//     CRect rect;//     GetClientRect(&rect);//得到客户端矩形//     MoveWindow(rect.Width()/3,rect.Height()/3,rect.Width(),rect.Height()/1.5);//移动窗口    SetWindowPos(NULL,0,0,900,460,SWP_NOMOVE | SWP_NOZORDER);    //CMenu *pMenu=GetMenu();//获取菜单栏主菜单    //CMenu *pTestMenu=pMenu->GetSubMenu(1);//获取子菜单}//展开窗体void CWork::Onhuanyuan() {    // TODO: Add your control notification handler code here    SetWindowPos(NULL,0,0,900,730,SWP_NOMOVE | SWP_NOZORDER);}