Autodesk官方最新的.NET教程(二)(C#版)
[作者]:菩提树下的杨过 [来源]:互联网 [收录时间]:2007-12-5 20:34:56
<BR> <TABLE cellSpacing=0 cellPadding=9 width=780 align=center border=0> <TBODY> <TR> <TD width=71><IMG height=52 alt=动态网站制作指南 src="http://edu.itbulo.com/UploadFiles_1485/200507/20050719122027840.gif" width=247></TD> <TD align=middle width=709><A href="http://www.idc2001.com/" target=_blank><IMG height=60 src="http://edu.itbulo.com/UploadFiles_1485/200507/20050719122027931.gif" width=468 border=0></A></TD></TR></TBODY></TABLE> <TABLE cellSpacing=0 cellPadding=0 width=780 align=center background=images/menu_blue.jpg border=0> <TBODY> <TR> <TD height=34> <DIV align=center><A href="http://www.knowsky.com/"><FONT color=#ffffff><U>网 站 首 页</U></FONT></A> <B><FONT color=#ffffff>|</FONT></B> <A href="http://www.knowsky.com/web.asp"><FONT color=#ffffff><U>网 页 制 作</U></FONT></A> <FONT color=#ffffff><B>|</B></FONT> <A href="http://www.knowsky.com/developer.asp"><FONT color=#ffffff><U>网 络 编 程</U></FONT></A> <FONT color=#ffffff><B>|</B></FONT> <A href="http://www.knowsky.com/photo.asp"><FONT 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target=_blank><FONT color=#6699ff>立</FONT><FONT color=#33cc33>刻</FONT><FONT color=#ff33ff>注</FONT><FONT color=#ff6600>册</FONT><FONT color=#9900ff>!</FONT></A></DIV></TD></TR></TBODY></TABLE></TD></TR></TBODY></TABLE> <TABLE cellSpacing=0 cellPadding=0 width=780 align=center border=0> <TBODY> <TR bgColor=#ffffff> <TD colSpan=3 height=25>当前位置 : <A href="http://www.knowsky.com/"><U><FONT color=#800080>首页</FONT></U></A> &gt; <A href="http://www.knowsky.com/more.asp?typeid=28"><FONT color=#0000ff><U>ASP.NET基础</U></FONT></A></TD></TR></TBODY></TABLE> <DIV align=center><A href="http://www.finet.net.cn/xn.htm" target=_blank><U><IMG src="http://edu.itbulo.com/UploadFiles_1485/200507/20050719122028997.gif" border=0></U></A> <BR></DIV> <TABLE cellSpacing=1 cellPadding=0 width=784 align=center border=0> <TBODY> <TR bgColor=#f5f5f5> <TD vAlign=top width=594 bgColor=#ffffff> <DIV align=center><SPAN class=ccwheading02>Autodesk官方最新的.NET教程(二)(C#版)</SPAN> </DIV> <DIV align=center><BR>[ <A id=StranLink title=點擊以繁體中文方式瀏覽 href="http://www.knowsky.com/300783.html#"><FONT color=#ff0000><U>繁體中文</U></FONT></A> ] | <SPAN class=Text2>文章类别:<A href="http://www.knowsky.com/more.asp?typeid=28"><FONT color=#0000ff><U>ASP.NET基础</U></FONT></A></SPAN> | 文章等级: <IMG height=12 src="http://edu.itbulo.com/UploadFiles_1485/200507/20050719122028278.gif" width=13><IMG height=12 src="http://edu.itbulo.com/UploadFiles_1485/200507/20050719122028278.gif" width=13><IMG height=12 src="http://edu.itbulo.com/UploadFiles_1485/200507/20050719122028278.gif" width=13> | <SPAN class=Text2>发表日期:2005-6-18 &nbsp;星期六</SPAN><BR><SPAN class=Text2><BR><A href="http://count.knowsky.com/" target=_blank><FONT color=#ff0000><B><U>网站计数器</U></B></FONT></A> | <A href="http://magicface.knowsky.com/" target=_blank><B><FONT color=#0000ff><U>魔法表情申请</U></FONT></B></A><A href="http://dir.knowsky.com/"><B></B></A></SPAN> | <A href="http://code.knowsky.com/" target=_blank><FONT color=#009933><B><U><a class="channel_keylink" href="http://dl.iTbulo.com/" target="_blank">源码下载</a></U></B></FONT></A> | <B><A href="http://flash.knowsky.com/" target=_blank><FONT color=#ff0000><U>休闲游戏</U></FONT></A></B> | <A href="http://blog.knowsky.com/" target=_blank><FONT color=#ff0000><B><FONT color=#ff9900><U>出色<a class="channel_keylink" href="http://www.iTbulo.net/" target="_blank">博客</a></U></FONT></B></FONT></A> | <A href="http://www.knowsky.com/html2js.htm" target=_blank><FONT color=#006666><B><U>Html2Js</U></B></FONT></A> <HR SIZE=1> <DIV align=left> <TABLE cellSpacing=5 cellPadding=0 width="1%" align=right border=0> <TBODY> <TR> <TD> <SCRIPT type=text/javascript> var arrBaiduCproConfig=new Array(); arrBaiduCproConfig['uid'] = 2214; arrBaiduCproConfig['n'] = 'sayyescpr'; arrBaiduCproConfig['tm'] = 48; arrBaiduCproConfig['cm'] = 100; arrBaiduCproConfig['um'] = 50; arrBaiduCproConfig['rad'] = 1; arrBaiduCproConfig['w'] = 336; arrBaiduCproConfig['h'] = 280; arrBaiduCproConfig['bd'] = '#ffffff'; arrBaiduCproConfig['bg'] = '#ffffff'; arrBaiduCproConfig['tt'] = '#0000ff'; arrBaiduCproConfig['ct'] = '#000000'; arrBaiduCproConfig['url'] = '#666666'; arrBaiduCproConfig['bdl'] = '#CCCCCC'; arrBaiduCproConfig['wn'] = 1; arrBaiduCproConfig['hn'] = 4; arrBaiduCproConfig['ta'] = 'center'; arrBaiduCproConfig['tl'] = 'top'; arrBaiduCproConfig['bu'] = 1; </SCRIPT> <SCRIPT src="http://cpro.baidu.com/cpro/ui/ui.js" type=text/javascript> </SCRIPT> <SCRIPT type=text/javascript> <!-- document.write(baiduCproIFrame()); --> </SCRIPT> <IFRAME marginWidth=0 marginHeight=0 src="http://cpro.baidu.com/cpro/ui/uijs.php?&amp;uid=2214&amp;n=sayyescpr&amp;tm=48&amp;cm=100&amp;um=50&amp;rad=1&amp;rsi0=336&amp;rsi1=280&amp;rss0=%23ffffff&amp;rss1=%23ffffff&amp;rss2=%230000ff&amp;rss3=%23000000&amp;rss4=%23666666&amp;rss5=%23CCCCCC&amp;wn=1&amp;hn=4&amp;rssl0=center&amp;rssl1=top&amp;rsi2=1&amp;word=http%3A%2F%2Fwww.knowsky.com%2F300783.html" frameBorder=0 width=336 scrolling=no height=280 allowTransparency></IFRAME></TD></TR></TBODY></TABLE> <DIV style="VISIBILITY: hidden; OVERFLOW: hidden; WIDTH: 1px; COLOR: white; HEIGHT: 1px">转自:动态网制作指南 www.knowsky.com</DIV><SPAN class=unnamed3> <P>选择自 zenghf7878 的 Blog </P> <P>第2章&nbsp; .NET AutoCAD 向导及Editor类<BR>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; 在第一章中,我们使用的是类库模板,这样就不得不手工加入acdbmdg. dll 和acmgd.dll这两个引用。在这一章中,我们将使用AutoCAD托管C#应用程序向导来创建.NET工程,它会自动加入以上两个引用。在开始本章之前,你首先得安装ObjectARX向导(ObjectARX2006开发包的\utils\ObjARXWiz\ArxWizards.msi)。<BR>&nbsp;<BR>1)&nbsp;&nbsp;&nbsp; 启动Visual Studio .NET,选择”文件&gt;新建&gt;工程”(File&gt; New&gt; Project)。在新建工程对话框中选择工程类型为”Visual C#工程”,然后选择“AutoCAD Managed CS Project Application”模板。在工程名字框中输入”Lab2”,然后选择工程存放的位置。点击确定按钮,“AutoCAD Managed CSharp Application Wizard”对话框将会出现。因为我们不需要使用非托管代码,所以不要选择“Enable Unmanaged Debugging”项。“Registered Developer Symbol”将会使用你在安装ObjectARX向导时输入的值。单击”finish”按钮来创建工程。<BR>2)&nbsp;&nbsp;&nbsp; 下面来看一下向导生成的工程。在解决方案浏览器中,你会看到acdbmgd 和 acmgd已经被引用了。在Class.cs文件中,“Autodesk.AutoCAD.Runtime”命名空间已被导入,工程使用“Registered Developer Symbol”的名字来命名缺省的公有类。向导还为类加入了一个CommandMethod属性和一个函数,它们用于AutoCAD命令。<BR>3)&nbsp;&nbsp;&nbsp; 在前一章中,我们使用一个“Autodesk.AutoCAD.EditorInput.Editor”类的实例对象在AutoCAD命令行上输出文本。在这一章中,我们将使用这个类来提示用户在AutoCAD图形中选择一个点,然后将用户选择的点的x,y,z值显示出来。和前一章一样,请导入Autodesk.AutoCAD.ApplicationServices 和 Autodesk.AutoCAD.EditorInput命名空间。<BR>4)&nbsp;&nbsp;&nbsp; 把向导生成的CommandMethod属性的值改为有意义一些的名字如“selectPoint”(函数的名字可以不用修改)。PromptPointOptions类用来设置提示字符串和其它的一些控制提示的选项。这个类的一个实例作为参数被传入到Editor.GetPoint方法。在函数的开始,实例化这个类,设置字符串参数为“Select a point”。因为 Editor.GetPoint方法会返回一个PromptPointResult类的实例对象,所以我们也要把它实例化。<BR>&nbsp;<BR>PromptPointOptions prPointOptions = <BR>new PromptPointOptions("Select a point"); <BR>PromptPointResult prPointRes;<BR>&nbsp;<BR>5)&nbsp;&nbsp;&nbsp; 接下来实例化一个Editor类的对象并使用参数为PromptPointOptions对象的GetPoint方法。用GetPoint方法的返回值来给上面声明的PromptPointResult对象赋值。赋值好以后,我们可以测试PromptPointResult对象的状态,假如不是OK就返回。<BR>&nbsp;<BR>prPointRes = ed.GetPoint(prPointOptions); <BR>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; if (prPointRes.Status != PromptStatus.OK) <BR>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; { <BR>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; ed.WriteMessage("Error");<BR>}<BR>&nbsp;<BR>6)&nbsp;&nbsp;&nbsp; 假如PromptPointResult对象返回了一个有效的点,我们就可以使用WriteMessage方法把结果输出到命令行。PromptPointResult.Value的ToString方法使输出非常轻易:<BR>&nbsp;<BR>ed.WriteMessage("You selected point " <BR>&nbsp;prPointRes.Value.ToString)<BR>&nbsp;<BR>7)&nbsp;&nbsp;&nbsp; 按F5来运行一个调试AutoCAD的进程。(注重:向导已经设置好用acad.exe来调试)在AutoCAD命令行中输入NETLOAD,选择Lab2.dll并打开。在命令行中输入你起的命令名字(selectPoint)。在选择点的提示下,单击图形中的任一点。假如一切正常的话,你可以在命令行中看到你所选的点的坐标值。在Class.cs文件的“ed.WriteMessage("Error");”行加入断点,然后再次运行selectPoint命令。这一次,在选择点的提示下按ESC键而不是选择一个点。PromptPointResult对象的状态就不是OK了,所以上面代码中的if语句就会被执行,“ed.WriteMessage("Error")”;语句就会被调用。<BR>8)&nbsp;&nbsp;&nbsp; 接下来我们将加入另外一个命令,它可以获取两个点之间的距离。向导没有添加命令的功能,所以我们必须手工添加。在Class.cs文件的选择点的函数(getPoint)下面添加一个名为getDistance的新命令。加入命令的方法请参考上一章的内容或本章的源代码,这里就不列出了。使用CommandMethod属性并使字符串参数为“getdistance”或其它类似的名字。在命令的函数中使用PromptDistanceOptions代替PromptPointOptions。当然GetDistance方法的返回值是一个PromptDoubleResult类的实例对象,所以请用PromptDoubleResult来代替PromptPointResult:<BR>&nbsp;<BR>PromptDistanceOptions prDistOptions = new&nbsp;&nbsp;&nbsp;&nbsp; <BR>&nbsp;&nbsp;&nbsp;&nbsp; PromptDistanceOptions("Find distance, select first point:"); <BR>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; PromptDoubleResult prDistRes; <BR>prDistRes = ed.GetDistance(prDistOptions);<BR>&nbsp;<BR>9)&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; 和前面的命令一样,也可以测试PromptDoubleResult的状态,然后用WriteMessage方法在命令行中显示值。<BR>&nbsp;<BR>if (prDistRes.Status != PromptStatus.OK) <BR>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; { <BR>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; ed.WriteMessage("Error");<BR>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; } <BR>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; else<BR>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; {<BR>ed.WriteMessage("The distance is: " + prDistRes.Value.ToString());<BR>&nbsp;&nbsp;&nbsp; <BR>&nbsp; }<BR></P></SPAN> <DIV style="VISIBILITY: hidden; OVERFLOW: hidden; WIDTH: 1px; COLOR: white; HEIGHT: 1px">转自:动态网制作指南 www.knowsky.com</DIV></DIV></DIV></TD></TR></TBODY></TABLE>