术语 | setmetargn |
释义 | SetMetaRgn 语法: int SetMetaRgn( __in HDC hdc ); SetMetaRgn功能 相交的SetMetaRgn功能为与当前metaregion指定的设备上下文当前剪辑区域和保存作为指定的设备上下文新metaregion结合地区。剪辑区域被重置为空地区。 参数 hdc [in] 一个句柄,设备上下文。 返回值 返回值指定新的剪辑区域的复杂性和可以是下列值之一。 返回codeDescription NULLREGIONRegion是空的。 SIMPLEREGIONRegion是一个单一的矩形。 COMPLEXREGIONRegion不止一个矩形。 ERRORAn发生错误。 (以前的剪切区域不受影响。) 备注 目前的设备上下文剪辑区域的定义是其剪辑区域和metaregion交集。 该SetMetaRgn函数只应被调用后,应用程序的原始设备上下文是通过调用SaveDC功能保存。 要求: 最低支持:client-Windows 2000专业版 最低支持server-Windows 2000服务器 HeaderWingdi.h(头文件:winuser.h) LibraryGdi32.lib DLLGdi32.dll 参见 裁剪概述 裁剪功能 GetMetaRgn SaveDC 如果有任何问题和意见,请发送给微软(wsddocfb@microsoft.com) 生成日期:2009年7月11日 ==英文原文==SetMetaRgn Function The SetMetaRgn function intersects the current clipping region for the specified device context with the current metaregion and saves the combined region as the new metaregion for the specified device context. The clipping region is reset to a null region. Syntax int SetMetaRgn( __in HDC hdc ); Parameters hdc [in] A handle to the device context. Return Value The return value specifies the new clipping region's complexity and can be one of the following values. Return codeDescription NULLREGIONRegion is empty. SIMPLEREGIONRegion is a single rectangle. COMPLEXREGIONRegion is more than one rectangle. ERRORAn error occurred. (The previous clipping region is unaffected.) Remarks The current clipping region of a device context is defined by the intersection of its clipping region and its metaregion. The SetMetaRgn function should only be called after an application's original device context was saved by calling the SaveDC function. Requirements Minimum supported clientWindows 2000 Professional Minimum supported serverWindows 2000 Server HeaderWingdi.h (include Windows.h) LibraryGdi32.lib DLLGdi32.dll See Also Clipping Overview Clipping Functions GetMetaRgn SaveDC Send comments about this topic to Microsoft Build date: 7/11/2009 ==原始网址==http://msdn.microsoft.com/en-us/library/dd145075(VS.85).aspx\n |
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