修改窗口属性（全部都是SetWindowLong设置）

说明：
以下函数对于POPUP窗口有效，对于子窗口好像不行。


//最小化按钮有效
::SetWindowLong(m_hWnd,GWL_STYLE,GetWindowLong(m_hWnd,GWL_STYLE) | WS_MINIMIZEBOX );  
::SetWindowPos(m_hWnd,NULL,0,0,0,0,SWP_NOMOVE|SWP_NOSIZE|SWP_FRAMECHANGED);


//最小化按钮无效
::SetWindowLong(m_hWnd,GWL_STYLE,GetWindowLong(m_hWnd,GWL_STYLE) &~WS_MINIMIZEBOX );  
::SetWindowPos(m_hWnd,NULL,0,0,0,0,SWP_NOMOVE|SWP_NOSIZE|SWP_FRAMECHANGED);



//最大化按钮有效
::SetWindowLong(m_hWnd,GWL_STYLE,GetWindowLong(m_hWnd,GWL_STYLE) | WS_MAXIMIZEBOX );  
::SetWindowPos(m_hWnd,NULL,0,0,0,0,SWP_NOMOVE|SWP_NOSIZE|SWP_FRAMECHANGED);



//最大化按钮无效
::SetWindowLong(m_hWnd,GWL_STYLE,GetWindowLong(m_hWnd,GWL_STYLE) &~WS_MAXIMIZEBOX );  
::SetWindowPos(m_hWnd,NULL,0,0,0,0,SWP_NOMOVE|SWP_NOSIZE|SWP_FRAMECHANGED);


//关闭按钮有效
::EnableMenuItem(::GetSystemMenu(m_hWnd,false),SC_CLOSE,MF_BYCOMMAND | MF_GRAYED);

//关闭按钮无效
::EnableMenuItem(::GetSystemMenu(m_hWnd,false),SC_CLOSE,MF_BYCOMMAND | MF_ENABLED);


//工具栏窗口。在任务栏上没有程序显示,需要添加在OnInitDialog()里
::SetWindowLong(m_hWnd,GWL_EXSTYLE,GetWindowLong(m_hWnd,GWL_EXSTYLE) 
   &~WS_EX_APPWINDOW|WS_EX_TOOLWINDOW ); 
::SetWindowPos(m_hWnd,NULL,0,0,0,0,SWP_FRAMECHANGED|SWP_NOMOVE|SWP_NOSIZE);


//添加标题栏
::SetWindowLong(m_hWnd,GWL_STYLE,GetWindowLong(m_hWnd,GWL_STYLE) 
   | WS_CAPTION );  
::SetWindowPos(m_hWnd,NULL,0,0,0,0,SWP_NOMOVE|SWP_NOSIZE|SWP_FRAMECHANGED);

//取消标题栏
::SetWindowLong(m_hWnd,GWL_STYLE,GetWindowLong(m_hWnd,GWL_STYLE) 
   & ~WS_CAPTION );  
::SetWindowPos(m_hWnd,NULL,0,0,0,0,SWP_NOMOVE|SWP_NOSIZE|SWP_FRAMECHANGED);



//取消标题栏，保留3d边框，可调整窗口大小
::SetWindowLong(m_hWnd,GWL_STYLE, GetWindowLong(m_hWnd,GWL_STYLE) 
   & ~WS_CAPTION | WS_THICKFRAME );  
::SetWindowPos(m_hWnd,NULL,0,0,0,0,SWP_NOMOVE|SWP_NOSIZE|SWP_FRAMECHANGED);   //一定要加这句设置才会立即生效


//取消标题栏和3d边框，保留一个线条的细边框，不能调整窗口大小
::SetWindowLong(m_hWnd,GWL_STYLE,GetWindowLong(m_hWnd,GWL_STYLE) 
   & ~WS_CAPTION & ~WS_THICKFRAME | WS_BORDER );  
::SetWindowPos(m_hWnd,NULL,0,0,0,0,SWP_NOMOVE|SWP_NOSIZE|SWP_FRAMECHANGED);



//如果有WS_EX_DLGMODALFRAME还要取消WS_EX_DLGMODALFRAME
// ::SetWindowLong(m_hWnd,GWL_EXSTYLE,GetWindowLong(m_hWnd,GWL_EXSTYLE) 
//   & ~WS_EX_DLGMODALFRAME); 
// ::SetWindowPos(m_hWnd,NULL,0,0,0,0,SWP_FRAMECHANGED|SWP_NOMOVE|SWP_NOSIZE);


//取消所有边框
::SetWindowLong(m_hWnd,GWL_STYLE,GetWindowLong(m_hWnd,GWL_STYLE) 
   & ~WS_CAPTION & ~WS_THICKFRAME );  
::SetWindowPos(m_hWnd,NULL,0,0,0,0,SWP_NOMOVE|SWP_NOSIZE|SWP_FRAMECHANGED);



// //如果有WS_EX_DLGMODALFRAME还要取消WS_EX_DLGMODALFRAME
// ::SetWindowLong(m_hWnd,GWL_EXSTYLE,GetWindowLong(m_hWnd,GWL_EXSTYLE) 
//   & ~WS_EX_DLGMODALFRAME); 
// ::SetWindowPos(m_hWnd,NULL,0,0,0,0,SWP_FRAMECHANGED|SWP_NOMOVE|SWP_NOSIZE);

VC++6.0 如何去掉MFC向导生成的SDI程序中视图边框的3D效果2010-03-24 17:48先要去掉view的边框，代码如下： 
BOOL CSDIView::PreCreateWindow(CREATESTRUCT& cs) 
{ 
cs.style &=~WS_BORDER;//加入的代码 
return CFormView::PreCreateWindow(cs); 
} 
然后在去掉外部Frame的客户区边框，代码如下： 
BOOL CMainFrame::PreCreateWindow(CREATESTRUCT& cs) 
{ 
if( !CFrameWnd::PreCreateWindow(cs) ) 
return FALSE; 
cs.dwExStyle&=~WS_EX_CLIENTEDGE;//加入的代码，一定要在CFrameWnd::PreCreateWindow(cs)之后执行 
return TRUE; 
}