📄 让你的vc程序动起来.htm
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<html><head><meta HTTP-EQUIV="Content-Type" CONTENT="text/html; charset=gb_2312-80"><meta NAME="GENERATOR" CONTENT="Microsoft FrontPage 3.0"><title>让你的VC程序动起来</title></head><body><!-- FC HP BN1 START --><!-- Please do not remove the line above or the code within this section --><!-- Doing so may cause damage to your pages or insertion of multiple banners--><center><p><table border="0" cellspacing="0" cellpadding="0"><tr><td colspan="11"><img src="http://www.fortunecity.com/console2/newnav/top.gif" height="7" width="555"></td></tr><tr><td><img src="http://www.fortunecity.com/console2/newnav/left.gif" alt="FC Navigation Console" height="60" width="72" border="0" usemap="#fcleft"><map name="fcleft"><area shape="rect" coords="10,43,64,60" href="http://www2.fortunecity.com/cgi-bin/homepage/estate.pl?referer=navbar" target="_top"><area shape="rect" coords="9,21,61,36" href="http://www2.fortunecity.com/cgi-bin/showarea.pl?area=skyscraper&referer=navbar" target="_top"><area shape="rect" coords="8,0,62,15" href="http://www.fortunecity.com" target="_top"><area shape="rect" href="http://www.fortunecity.com" target="_top" coords="0,0,49,49"></map></td><td colspan="9"><A HREF="http://ad.doubleclick.net/jump/fc.us468/member/tech;s1=m;s3=tech;pos=1;tag=g;sz=468x60;mtile=1;num=11392?"><IMG SRC="http://ad.doubleclick.net/ad/fc.us468/member/tech;s1=m;s3=tech;pos=1;tag=g;sz=468x60;mtile=1;num=11392?" border=0 height="60" width="468"></A></td><td><img src="http://www.fortunecity.com/console2/newnav/right.gif" width="15" height="60"></td></tr><tr><td><img src="http://www.fortunecity.com/console2/newnav/left2.gif" height="31" width="72" target="_top"></td><td><img src="http://www.fortunecity.com/console2/newnav/gap1.gif" width="17" height="31"></td><td><a href="http://adex3.flycast.com/server/socket/127.0.0.1:2800/click/FortuneCitycom/NavBar1/11392" target="_top"><img src="http://adex3.flycast.com/server/socket/127.0.0.1:2800/ad/FortuneCitycom/NavBar1/11392" border="0" width="88" height="31"></a></td><td><img src="http://www.fortunecity.com/console2/newnav/gap2.gif" width="24" height="31"></td><td><a href="http://adex3.flycast.com/server/socket/127.0.0.1:2800/click/FortuneCitycom/NavBar2/11392" target="_top"><img src="http://adex3.flycast.com/server/socket/127.0.0.1:2800/ad/FortuneCitycom/NavBar2/11392" border="0" width="88" height="31"></a></td><td><img src="http://www.fortunecity.com/console2/newnav/gap3.gif" width="24" height="31"></td><td><a href="http://adex3.flycast.com/server/socket/127.0.0.1:2800/click/FortuneCitycom/NavBar3/11392" target="_top"><img src="http://adex3.flycast.com/server/socket/127.0.0.1:2800/ad/FortuneCitycom/NavBar3/11392" border="0" width="88" height="31"></a></td><td><img src="http://www.fortunecity.com/console2/newnav/gap4.gif" width="19" height="31"></td><td><a href="http://www2.fortunecity.com/cgi-bin/homepage/navbarforward.cgi?from=nav4&referer=navbare" target="_top"><img src="http://www.fortunecity.com/console2/newnav/button4.gif" border="0" width="88" height="31"></a></td><td><img src="http://www.fortunecity.com/console2/newnav/gap5.gif" width="32" height="31"></td><td><img src="http://www.fortunecity.com/console2/newnav/right2.gif" width="15" height="31"></td></tr></table></p></center><!-- WARNING: under no circumstances remove the line below. Doing so may damage your page.--><!-- FC HP BN1 END --><b><font FACE="楷体_GB2312" LANG="ZH-CN" size="4"><p ALIGN="CENTER">让你的</font><font size="4">VC</font><font FACE="楷体_GB2312"LANG="ZH-CN" size="4">程序动起来</p></font></b><font size="3" FACE="楷体_GB2312" LANG="ZH-CN"><p ALIGN="CENTER">河南</font><font size="3"> <font FACE="楷体_GB2312" LANG="ZH-CN">郭虹</p></font></font><p ALIGN="CENTER"><font FACE="楷体_GB2312" LANG="ZH-CN" size="4">回到<ahref="../chinese.htm">中文教材</a></font></p><font size="4"><p ALIGN="JUSTIFY">Microsoft Visual C++ 5.0<font FACE="楷体_GB2312" LANG="ZH-CN">作为一种编程环境为广大的程序设计员所使用，这其中不乏许多初学者，作为资历尚浅的编程人员，不肯能对</font>VC<fontFACE="楷体_GB2312" LANG="ZH-CN">的方方面有深入的了解。每当你编制成功一个软件，可否想过让你设计的图标充满动感？</p><p ALIGN="JUSTIFY">本文讲给出一个具体的动画图标设计例子。下面详细说明编制步骤并给出添写的代码。</p><p ALIGN="JUSTIFY">在启动</font>Visual C++ 5.0<font FACE="楷体_GB2312" LANG="ZH-CN">后，用</font>MFC AppWizard(exe)<font FACE="楷体_GB2312" LANG="ZH-CN">创建一个基于单文档</font>(Single document)<font FACE="楷体_GB2312" LANG="ZH-CN">或多文档</font>(Multiple document)<fontFACE="楷体_GB2312" LANG="ZH-CN">的项目，命名为</font>MyIcon<fontFACE="楷体_GB2312" LANG="ZH-CN">，其他设置均采用缺省选项，然后按下列步骤进行。</p><p ALIGN="JUSTIFY">首先，需要绘制几个图标作为动画所用图标，以取代</font>AppWizard<fontFACE="楷体_GB2312" LANG="ZH-CN">生成的默认图标</font>.<font FACE="楷体_GB2312"LANG="ZH-CN">用鼠标右键单击</font>ResourceView<font FACE="楷体_GB2312"LANG="ZH-CN">中的</font>Icon<font FACE="楷体_GB2312" LANG="ZH-CN">，然后选择</font>Insert Icon<font FACE="楷体_GB2312" LANG="ZH-CN">创建你的图标</font>.<fontFACE="楷体_GB2312" LANG="ZH-CN">本例中作者绘制了三个图标，依次在左上、正中、右下画了个圆，并分别填以红、绿、蓝三种颜色。图标的</font>ID<fontFACE="楷体_GB2312" LANG="ZH-CN">为</font>IDI_ICON1<font FACE="楷体_GB2312"LANG="ZH-CN">到</font>IDI_ICON3<font FACE="楷体_GB2312" LANG="ZH-CN">。</p><p ALIGN="JUSTIFY">然后，编辑</font>CmainFrame::OnCreate<font FACE="楷体_GB2312"LANG="ZH-CN">方法，增加用来设指定时器的代码。</p></font><p ALIGN="JUSTIFY">int CMainFrame::OnCreate(LPCREATESTRUCT lpCreateStruct)</p><p ALIGN="JUSTIFY">{if(CMDIFrameWnd::OnCreate(lpCreateStruct)==-1)</p><p ALIGN="JUSTIFY">return –1;</p><p ALIGN="JUSTIFY">…</p><p ALIGN="JUSTIFY">//<font FACE="楷体_GB2312" LANG="ZH-CN">增加你的代码</p></font><p ALIGN="JUSTIFY">SetTimer(1,500,NULL);}</p><font FACE="楷体_GB2312" LANG="ZH-CN"><p ALIGN="JUSTIFY">通过</font>ClassWizard<font FACE="楷体_GB2312" LANG="ZH-CN">为</font>CMainFrame<fontFACE="楷体_GB2312" LANG="ZH-CN">增加下列消息处理函数：</p></font></font><table BORDER="1" CELLSPACING="2" BORDERCOLOR="#808080" CELLPADDING="7" WIDTH="559"> <tr> <td WIDTH="33%" VALIGN="MIDDLE"><small> </small></td> <td WIDTH="33%" VALIGN="MIDDLE"><font FACE="楷体_GB2312" LANG="ZH-CN" size="4"><p ALIGN="CENTER">函数</font></td> <td WIDTH="33%" VALIGN="MIDDLE"><font FACE="楷体_GB2312" LANG="ZH-CN" size="4"><p ALIGN="CENTER">消息</font></td> </tr> <tr> <td WIDTH="33%" VALIGN="MIDDLE"><font size="4"><p ALIGN="CENTER">CMainFrame</font></td> <td WIDTH="33%" VALIGN="MIDDLE"><font size="4"><p ALIGN="CENTER">OnTimer</font></td> <td WIDTH="33%" VALIGN="MIDDLE"><font size="4"><p ALIGN="CENTER">WM_TIMER</font></td> </tr> <tr> <td WIDTH="33%" VALIGN="MIDDLE"><font size="4"><p ALIGN="CENTER">CMainFrame</font></td> <td WIDTH="33%" VALIGN="MIDDLE"><font size="4"><p ALIGN="CENTER">OnDestroy</font></td> <td WIDTH="33%" VALIGN="MIDDLE"><font size="4"><p ALIGN="CENTER">WM_DESTROY</font></td> </tr></table><font FACE="楷体_GB2312" LANG="ZH-CN" size="4"><p ALIGN="JUSTIFY">在</font><font size="4">CMainFrame::OnTimer<font FACE="楷体_GB2312"LANG="ZH-CN">方法中，增加用来启动定时器的代码。</p></font><p ALIGN="JUSTIFY">void CMainFrame::OnTimer(UINT nIDEvent)</p><p ALIGN="JUSTIFY">{//<font FACE="楷体_GB2312" LANG="ZH-CN">增加你的代码</p></font><p ALIGN="JUSTIFY">static int icons[]={IDI_ICON1,IDI_ICON2,IDI_ICON3};</p><p ALIGN="JUSTIFY">static long index=0;</p><p ALIGN="JUSTIFY">HICON hIconOld;</p><p ALIGN="JUSTIFY">HICON hIconNew;</p><p ALIGN="JUSTIFY">hIconNew=AfxGetApp()->LoadIcon(icons[index++%3]);</p><p ALIGN="JUSTIFY">hIconOld=(HICON)GetClassLong(m_hWnd,GCL_HICON);</p><p ALIGN="JUSTIFY">ASSERT(hIconNew);</p><p ALIGN="JUSTIFY">ASSERT(hIconOld);</p><p ALIGN="JUSTIFY">if(hIconNew!=hIconOld)</p><p ALIGN="JUSTIFY">{</p><p ALIGN="JUSTIFY">DestroyIcon(hIconOld);</p><p ALIGN="JUSTIFY">SetClassLong(m_hWnd,GCL_HICON,(long)hIconNew);</p><p ALIGN="JUSTIFY">RedrawWindow(NULL,NULL,RDW_FRAME|RDW_ERASE);</p><p ALIGN="JUSTIFY">}</p><p ALIGN="JUSTIFY">//CMDIFrameWnd::OnTimer(nIDEvent);</p><p ALIGN="JUSTIFY">}</p><font FACE="楷体_GB2312" LANG="ZH-CN"><p ALIGN="JUSTIFY">用数组元素标识各图标，用</font>AfxGetApp()->LoadIcon(…)<fontFACE="楷体_GB2312" LANG="ZH-CN">取得下一帧图标的句柄，用</font>GetWindowLong(…)<fontFACE="楷体_GB2312" LANG="ZH-CN">装载下一帧图标，否则卸掉上一帧图标，用</font>SetClassLong(…)<fontFACE="楷体_GB2312" LANG="ZH-CN">装载下一帧图标，并重画主窗口。</p><p ALIGN="JUSTIFY">在</font>CMainFrame::OnDestroy<font FACE="楷体_GB2312" LANG="ZH-CN">方法中，增加在主窗口撤销时中止定时器的代码。</p></font><p ALIGN="JUSTIFY">void CMainFrame::OnDestroy()</p><p ALIGN="JUSTIFY">{</p><p ALIGN="JUSTIFY">CMDIFrameWnd::OnDestroy();</p><p ALIGN="JUSTIFY">//<font FACE="楷体_GB2312" LANG="ZH-CN">增加你的代码</p></font><p ALIGN="JUSTIFY">KillTimer(1);</p><p ALIGN="JUSTIFY">}</p><font FACE="楷体_GB2312" LANG="ZH-CN"><p ALIGN="JUSTIFY">编译和运行应用程序可以看到红蓝绿三色彩圈循环显示的动画效果。</p><p ALIGN="JUSTIFY">该范例程序用了一个</font>0.5s<font FACE="楷体_GB2312"LANG="ZH-CN">的定时器通知应用程序改变图标，所以显示速度为每秒两帧图标，所以显示速度为每秒两帧图标。如想改变显示速度，可通过改变</font>SetTimer()<fontFACE="楷体_GB2312" LANG="ZH-CN">第二个参数实现，其单位为毫秒。</p><p ALIGN="JUSTIFY">充满动感的图标不仅让你的程序增添了些情趣，也体现出你的个性风格和软件特色。</p><p ALIGN="JUSTIFY">心动不如行动！朋友，还不让你的</font>VC<fontFACE="楷体_GB2312" LANG="ZH-CN">程序动起来。</p><p ALIGN="CENTER">（选自《电脑爱好者》</font>1998<font FACE="楷体_GB2312"LANG="ZH-CN">年</font>22<font FACE="楷体_GB2312" LANG="ZH-CN">期）</p></font></font><p ALIGN="CENTER"><font FACE="楷体_GB2312" LANG="ZH-CN" size="4">回到<ahref="../chinese.htm">中文教材</a></font></p></body></html>⌨️ 快捷键说明
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