📄 csdn_文档中心_用win32 api创建不规则窗口.htm
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<P
style="LINE-HEIGHT: 100%; MARGIN-BOTTOM: 2px; MARGIN-TOP: 2px"><FONT
color=#000000 face=宋体 size=2><SPAN
style="FONT-FAMILY: 宋体; FONT-SIZE: 10.5pt; mso-bidi-font-size: 10.0pt; mso-ascii-font-family: Times New Roman; mso-hansi-font-family: Times New Roman; mso-bidi-font-family: Times New Roman; mso-font-kerning: 1.0pt; mso-ansi-language: EN-US; mso-fareast-language: ZH-CN; mso-bidi-language: AR-SA">使用API创建不规则窗口<SPAN
style="FONT-FAMILY: 宋体; FONT-SIZE: 10.5pt; mso-bidi-font-size: 10.0pt; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'; mso-bidi-font-family: 'Times New Roman'; mso-font-kerning: 1.0pt; mso-ansi-language: EN-US; mso-fareast-language: ZH-CN; mso-bidi-language: AR-SA">主要有两种方式</SPAN>，即矢量形状叠加（布尔运算）和位图区域两种。无论哪种方式，都可以实现上面两图的效果。在编写这样的窗口代码前，我们必须清楚要创建的窗口的形状是否复杂，如图片B的窗口很复杂，为极不规则的窗口，很难使用矢量形状叠加的方式创建，那么可以使用区域，指定位图的透明色实现；而图片A是圆角矩形，使用简单的矢量形状叠加即可。之所以这样，是为了运行效率考虑，对于普通的不规则窗口，矢量叠加方式速度比较快。当然，位图区域方式可以创建任何形状的窗口，如果你不需要考虑运行效率（实际两种方式速度差异很小），那么不必考虑矢量形状叠加的办法，直接看位图区域的例子即可。</SPAN></FONT></P>
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<P
style="LINE-HEIGHT: 100%; MARGIN-BOTTOM: 2px; MARGIN-TOP: 2px"><FONT
color=#000000 face=宋体 size=2><SPAN
style="FONT-FAMILY: 宋体; FONT-SIZE: 10.5pt; mso-bidi-font-size: 10.0pt; mso-ascii-font-family: Times New Roman; mso-hansi-font-family: Times New Roman; mso-bidi-font-family: Times New Roman; mso-font-kerning: 1.0pt; mso-ansi-language: EN-US; mso-fareast-language: ZH-CN; mso-bidi-language: AR-SA">A.矢量叠加方式创建不规则窗口</SPAN></FONT></P></TD></TR>
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<P
style="LINE-HEIGHT: 100%; MARGIN-BOTTOM: 2px; MARGIN-TOP: 2px"><FONT
color=#000000 face=宋体 size=2><SPAN
style="FONT-FAMILY: 宋体; FONT-SIZE: 10.5pt; mso-bidi-font-size: 10.0pt; mso-ascii-font-family: Times New Roman; mso-hansi-font-family: Times New Roman; mso-bidi-font-family: Times New Roman; mso-font-kerning: 1.0pt; mso-ansi-language: EN-US; mso-fareast-language: ZH-CN; mso-bidi-language: AR-SA">例1：简单的窗口区域设定，使用圆角矩形</SPAN></FONT></P>
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color=#000000 face=宋体 size=2><SPAN
style="FONT-FAMILY: 宋体; FONT-SIZE: 10.5pt; mso-bidi-font-size: 10.0pt; mso-ascii-font-family: Times New Roman; mso-hansi-font-family: Times New Roman; mso-bidi-font-family: Times New Roman; mso-font-kerning: 1.0pt; mso-ansi-language: EN-US; mso-fareast-language: ZH-CN; mso-bidi-language: AR-SA">1、HRGN
hRGN=CreateRoundRectRgn(0,0,200,200,20,20);//创建圆角矩形区域</SPAN></FONT></P>
<P
style="LINE-HEIGHT: 100%; MARGIN-BOTTOM: 2px; MARGIN-TOP: 2px"><FONT
color=#000000 face=宋体 size=2><SPAN
style="FONT-FAMILY: 宋体; FONT-SIZE: 10.5pt; mso-bidi-font-size: 10.0pt; mso-ascii-font-family: Times New Roman; mso-hansi-font-family: Times New Roman; mso-bidi-font-family: Times New Roman; mso-font-kerning: 1.0pt; mso-ansi-language: EN-US; mso-fareast-language: ZH-CN; mso-bidi-language: AR-SA">2、SetWindowRgn(hRGN,TRUE);//将创建的区域设定为窗口区域<BR>例2：多个区域叠加（布尔运算）</SPAN></FONT></P>
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color=#000000 face=宋体 size=2><SPAN
style="FONT-FAMILY: 宋体; FONT-SIZE: 10.5pt; mso-bidi-font-size: 10.0pt; mso-ascii-font-family: Times New Roman; mso-hansi-font-family: Times New Roman; mso-bidi-font-family: Times New Roman; mso-font-kerning: 1.0pt; mso-ansi-language: EN-US; mso-fareast-language: ZH-CN; mso-bidi-language: AR-SA">1、HRGN
hRGN1=CreateRoundRectRgn(0,0,200,200,20,20);//创建圆角矩形区域</SPAN></FONT></P>
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style="LINE-HEIGHT: 100%; MARGIN-BOTTOM: 2px; MARGIN-TOP: 2px"><FONT
color=#000000 face=宋体 size=2><SPAN
style="FONT-FAMILY: 宋体; FONT-SIZE: 10.5pt; mso-bidi-font-size: 10.0pt; mso-ascii-font-family: Times New Roman; mso-hansi-font-family: Times New Roman; mso-bidi-font-family: Times New Roman; mso-font-kerning: 1.0pt; mso-ansi-language: EN-US; mso-fareast-language: ZH-CN; mso-bidi-language: AR-SA">2、HRGN
hRGN2=CreateRectRgn(10,10,20,20);//创建矩形区域</SPAN></FONT></P>
<P
style="LINE-HEIGHT: 100%; MARGIN-BOTTOM: 2px; MARGIN-TOP: 2px"><FONT
color=#000000 face=宋体 size=2><SPAN
style="FONT-FAMILY: 宋体; FONT-SIZE: 10.5pt; mso-bidi-font-size: 10.0pt; mso-ascii-font-family: Times New Roman; mso-hansi-font-family: Times New Roman; mso-bidi-font-family: Times New Roman; mso-font-kerning: 1.0pt; mso-ansi-language: EN-US; mso-fareast-language: ZH-CN; mso-bidi-language: AR-SA">3、HRGN
hRGN; CombineRgn(hRGN,hRGN1,hRGN2,RGN_DIFF);</SPAN></FONT></P>
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style="LINE-HEIGHT: 100%; MARGIN-BOTTOM: 2px; MARGIN-TOP: 2px"><FONT
color=#000000 face=宋体 size=2><SPAN
style="FONT-FAMILY: 宋体; FONT-SIZE: 10.5pt; mso-bidi-font-size: 10.0pt; mso-ascii-font-family: Times New Roman; mso-hansi-font-family: Times New Roman; mso-bidi-font-family: Times New Roman; mso-font-kerning: 1.0pt; mso-ansi-language: EN-US; mso-fareast-language: ZH-CN; mso-bidi-language: AR-SA">
//使用区域1减区域2，生成新区域hRGN(可选的参数有加，减，交等，详见MSDN)</SPAN></FONT></P>
<P
style="LINE-HEIGHT: 100%; MARGIN-BOTTOM: 2px; MARGIN-TOP: 2px"><FONT
color=#000000 face=宋体 size=2><SPAN
style="FONT-FAMILY: 宋体; FONT-SIZE: 10.5pt; mso-bidi-font-size: 10.0pt; mso-ascii-font-family: Times New Roman; mso-hansi-font-family: Times New Roman; mso-bidi-font-family: Times New Roman; mso-font-kerning: 1.0pt; mso-ansi-language: EN-US; mso-fareast-language: ZH-CN; mso-bidi-language: AR-SA">4、SetWindowRgn(hRGN,TRUE);//将创建的区域设定为窗口区域</SPAN></FONT></P></TD></TR>
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<TD bgColor=#66ccff width="100%"><FONT color=#000000 face=宋体
size=2><SPAN
style="FONT-FAMILY: 宋体; FONT-SIZE: 10.5pt; mso-bidi-font-size: 10.0pt; mso-ascii-font-family: Times New Roman; mso-hansi-font-family: Times New Roman; mso-bidi-font-family: Times New Roman; mso-font-kerning: 1.0pt; mso-ansi-language: EN-US; mso-fareast-language: ZH-CN; mso-bidi-language: AR-SA">B.位图区域方式创建不规则窗口
<A
href="http://go.163.com/~heavenandearth/vc/rgn.zip">点击此处下载BitmapToRegion函数代码rgn.zip：1.95
KB (2,002 字节)</A></SPAN></FONT></TD></TR>
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<P
style="LINE-HEIGHT: 100%; MARGIN-BOTTOM: 2px; MARGIN-TOP: 2px"><FONT
color=#000000 face=宋体 size=2><SPAN
style="FONT-FAMILY: 宋体; FONT-SIZE: 10.5pt; mso-bidi-font-size: 10.0pt; mso-ascii-font-family: Times New Roman; mso-hansi-font-family: Times New Roman; mso-bidi-font-family: Times New Roman; mso-font-kerning: 1.0pt; mso-ansi-language: EN-US; mso-fareast-language: ZH-CN; mso-bidi-language: AR-SA">1、HBITMAP
hBmp=(HBITMAP)LoadImage(应用程序句柄, 位图文件名, IMAGE_BITMAP, 宽度, 高度,
LR_LOADFROMFILE);</SPAN></FONT></P>
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color=#000000 face=宋体 size=2><SPAN
style="FONT-FAMILY: 宋体; FONT-SIZE: 10.5pt; mso-bidi-font-size: 10.0pt; mso-ascii-font-family: Times New Roman; mso-hansi-font-family: Times New Roman; mso-bidi-font-family: Times New Roman; mso-font-kerning: 1.0pt; mso-ansi-language: EN-US; mso-fareast-language: ZH-CN; mso-bidi-language: AR-SA">
//载入一个位图，该位图中的某个特定颜色将被作为透明区域处理</SPAN></FONT></P>
<P
style="LINE-HEIGHT: 100%; MARGIN-BOTTOM: 2px; MARGIN-TOP: 2px"><FONT
color=#000000 face=宋体 size=2><SPAN
style="FONT-FAMILY: 宋体; FONT-SIZE: 10.5pt; mso-bidi-font-size: 10.0pt; mso-ascii-font-family: Times New Roman; mso-hansi-font-family: Times New Roman; mso-bidi-font-family: Times New Roman; mso-font-kerning: 1.0pt; mso-ansi-language: EN-US; mso-fareast-language: ZH-CN; mso-bidi-language: AR-SA">2、HRGN
hRGN=BitmapToRegion(hBmp,RGB(255,0,0),0);//调用位图转换为区域的函数，透明色为红色，第三个参数为公差，为0即只将红色设定为透明色。如果公差为1，意味着与给定透明色的红绿蓝三色数值的差距在1范围内的颜色也将被作为透明色处理。</SPAN></FONT></P>
<P
style="LINE-HEIGHT: 100%; MARGIN-BOTTOM: 2px; MARGIN-TOP: 2px"><FONT
color=#000000 face=宋体 size=2><SPAN
style="FONT-FAMILY: 宋体; FONT-SIZE: 10.5pt; mso-bidi-font-size: 10.0pt; mso-ascii-font-family: Times New Roman; mso-hansi-font-family: Times New Roman; mso-bidi-font-family: Times New Roman; mso-font-kerning: 1.0pt; mso-ansi-language: EN-US; mso-fareast-language: ZH-CN; mso-bidi-language: AR-SA">3、SetWindowRgn(hRGN,TRUE);//将创建的区域设定为窗口区域<BR>说明：关于BitmapToRegion函数，它的功能就是将位图转换为区域，原理来自API:
ExtCreateRegion，该函数使用RGNDATA结构中的数据创建RGN，本函数就是分析位图的各个像素点数，根据它们填充RGNDATA结构，然后创建RGN的。</SPAN></FONT></P></TD></TR></TBODY></TABLE>
<P
style="LINE-HEIGHT: 100%; MARGIN-BOTTOM: 2px; MARGIN-TOP: 2px"><FONT
color=#000000 face=宋体 size=2><SPAN
style="FONT-FAMILY: 宋体; FONT-SIZE: 10.5pt; mso-bidi-font-size: 10.0pt; mso-ascii-font-family: Times New Roman; mso-hansi-font-family: Times New Roman; mso-bidi-font-family: Times New Roman; mso-font-kerning: 1.0pt; mso-ansi-language: EN-US; mso-fareast-language: ZH-CN; mso-bidi-language: AR-SA">由于不规则窗口专题比较简单，没有提供完整的范例，B方法的关键是BitmapToRegion函数，所以只提供了该函数的代码。如果还有</SPAN></FONT><FONT
color=#000000 face=宋体 size=2><SPAN
style="FONT-FAMILY: 宋体; FONT-SIZE: 10.5pt; mso-bidi-font-size: 10.0pt; mso-ascii-font-family: Times New Roman; mso-hansi-font-family: Times New Roman; mso-bidi-font-family: Times New Roman; mso-font-kerning: 1.0pt; mso-ansi-language: EN-US; mso-fareast-language: ZH-CN; mso-bidi-language: AR-SA">不清楚的地方或者想要完整的范例，<A
href="mailto:breath@china.com">请与我联系</A>。</SPAN></FONT></P><BR></TD></TR></TBODY></TABLE></TD></TR></TBODY></TABLE><BR>
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<TD align=middle bgColor=#006699 id=white><FONT
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</SPAN> 111222 <I>(2001-1-23 9:14:50)</I> </TD></TR>
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<TD bgColor=#ffffff colSpan=3 width=532><BR>?? <BR></TD></TR></TBODY></TABLE>
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</SPAN> 111222 <I>(2001-1-23 9:14:00)</I> </TD></TR>
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<TD bgColor=#ffffff colSpan=3 width=532><BR>我想要完整示例代码，可以邮给我么？
111222@0451.com <BR></TD></TR></TBODY></TABLE>
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<TD bgColor=#cccccc colSpan=3><SPAN style="COLOR: #cccccc"><IMG height=16
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</SPAN> breath <I>(2000-12-29 20:31:46)</I> </TD></TR>
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<TD bgColor=#ffffff colSpan=3 width=532><BR>今天收到csdn网友的信说无法下载，就又改了一下
<BR></TD></TR></TBODY></TABLE>
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<TD bgColor=#cccccc colSpan=3><SPAN style="COLOR: #cccccc"><IMG height=16
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</SPAN> breath <I>(2000-12-26 21:10:23)</I> </TD></TR>
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<TD bgColor=#ffffff colSpan=3 width=532><BR>直接贴的HTML，可惜了
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</SPAN> Dosn <I>(2000-12-23 0:57:32)</I> </TD></TR>
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<TD bgColor=#ffffff colSpan=3 width=532><BR>这篇文章是怎么打的，字都叠在一起了？？？
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