An application can intercept the WM_NCPAINT message and paint its own custom window frame. The clipping region for a window is always rectangular, even if the shape of the frame is altered. The wParam value can be passed to GetDCEx as in the following example. case WM_NCPAINT: { HDC hdc...
IfwParamis non-NULL, the control assumes that the value is an HDC and paints using that device context. Requirements OS Versions:Windows CE 1.0 and later. Header:Winuser.h. See Also BeginPaint|DefWindowProc|DispatchMessage|EndPaint|GetMessage|GetUpdateRect|PeekMessage|UpdateWindow|WM_ERASEBKGND ...
An application can intercept the WM_NCPAINT message and paint its own custom window frame. The clipping region for a window is always rectangular, even if the shape of the frame is altered. The wParam value can be passed to GetDCEx as in the following example. case WM_NCPAINT: { HDC hdc...
Return ValueAn application should return zero if it processes this message.RemarksAn application sends the WM_PAINT message when the operating system or another application makes a request to paint a portion of the application's window. This message is sent when UpdateWindow is called, or it is...
(value: &str) -> Vec<u16> { use std::os::windows::ffi::OsStrExt; std::ffi::OsStr::new(value).encode_wide() .chain(std::iter::once(0)).collect() } // Window procedure function to handle events //pub unsafe extern "system" fn window_proc( pub unsafe extern "system" fn ...
Return Value Remarks 显示另外 2 个 1/6/2010Sent by an application when Windows or another application makes a request to paint a portion of an application's window.Syntax复制 WM_PAINT hdc = (HDC) wParam; Parametershdc Handle to the device context (HDC) in which to draw. If this ...
(pThis->m_hWnd, uMsg, wParam, lParam, lRes,0);16//restore saved value for the current message17ATLASSERT(pThis->m_pCurrentMsg == &msg);1819//do the default processing if message was not handled20if(!bRet)21{22if(uMsg !=WM_NCDESTROY)23lRes = pThis->DefWindowProc(uMsg, wParam, ...
If wParam is non-NULL, the control assumes that the value is an HDC and paints using that device context.RequirementsOS Versions: Windows CE 1.0 and later. Header: Winuser.h.See AlsoBeginPaint | DefWindowProc | DispatchMessage | EndPaint | GetMessage | GetUpdateRect | PeekMessage | ...
Print Article 04/19/2017 In this article Syntax Parameters Return Value Remarks Show 2 more 3/28/2014 Sent by an application when Windows or another application makes a request to paint a portion of an application's window. Syntax Copy ...
CPoint* value; //将要显示的数值 int m_DX; //数据显示区的宽度 int m_Y0; //数据显示区参照点位置 CRect rect; //数据显示区矩形 然后在视类中添加函数GetScreenRect()用以获取数据显示区的大小及其他参数;添加函数CleanScreen()完成清除数据显示区的功能;添加函数DrawPoint()以便在数据显示区画点: ...