📄 c++ builder 初学问与答 （十二）.htm
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<td align="center" height=32 style="font-size: 12pt;color: #FF6600;">C++ Builder 初学问与答 （十二）</td>
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<td align="center" height=25 bgcolor=#F7F7F7>作者：佚名 来源：不详 发布时间：25/09/2006 19:29:37 发布人：admin</td>
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<div id="NewaspContentLabel" style="display:block;padding:0px 10px;" class="ContentFont"><FONT id=font_word style="FONT-SIZE: 14px; FONT-FAMILY: 宋体, Verdana, Arial, Helvetica, sans-serif"><H3 style="MARGIN: 0cm 0cm 0pt; TEXT-INDENT: 21pt" align=left><FONT size=2>（本系列文章，仅供CSDN使用，另授权CCRUN转载，其他个人与网站不得转载、摘抄，如需使用请与作者或CSDN联系）</FONT></H3><P style="MARGIN: 0cm 0cm 0pt; TEXT-INDENT: 21pt"> </P><H3 style="MARGIN: 0cm 0cm 0pt; TEXT-INDENT: 21pt"><A name=_Toc494088154><SPAN style="mso-bookmark: _Toc494087982"><SPAN lang=EN-US><FONT face=宋体 size=3>13.对话框组件</FONT></SPAN></SPAN></A></H3><P class=MsoNormalIndent style="MARGIN: 0cm 0cm 0pt; mso-char-indent-count: 2.0; mso-char-indent-size: 10.5pt"><FONT size=3><B><SPAN lang=EN-US> 96</SPAN></B><B><SPAN style="FONT-FAMILY: 宋体; mso-ascii-font-family: ''''Times New Roman''''; mso-hansi-font-family: ''''Times New Roman''''">）问：</SPAN></B><SPAN style="FONT-FAMILY: 宋体; mso-ascii-font-family: ''''Times New Roman''''; mso-hansi-font-family: ''''Times New Roman''''">怎样编写文件打开、保存等对话框？</SPAN></FONT></P><P class=MsoNormalIndent style="MARGIN: 0cm 0cm 0pt; mso-char-indent-count: 2.0; mso-char-indent-size: 10.5pt"><FONT size=3><B><SPAN style="FONT-FAMILY: 宋体; mso-ascii-font-family: ''''Times New Roman''''; mso-hansi-font-family: ''''Times New Roman''''"> 答：</SPAN></B><SPAN lang=EN-US>C++Builder</SPAN><SPAN style="FONT-FAMILY: 宋体; mso-ascii-font-family: ''''Times New Roman''''; mso-hansi-font-family: ''''Times New Roman''''">为我们提供了许多常用的对话框组件，这些对话框组件都放在组件模板的</SPAN><SPAN lang=EN-US>Dialogs</SPAN><SPAN style="FONT-FAMILY: 宋体; mso-ascii-font-family: ''''Times New Roman''''; mso-hansi-font-family: ''''Times New Roman''''">选项卡中，例如</SPAN><SPAN lang=EN-US>Font</SPAN><SPAN style="FONT-FAMILY: 宋体; mso-ascii-font-family: ''''Times New Roman''''; mso-hansi-font-family: ''''Times New Roman''''">，</SPAN><SPAN lang=EN-US>Color</SPAN><SPAN style="FONT-FAMILY: 宋体; mso-ascii-font-family: ''''Times New Roman''''; mso-hansi-font-family: ''''Times New Roman''''">，</SPAN><SPAN lang=EN-US>Open</SPAN><SPAN style="FONT-FAMILY: 宋体; mso-ascii-font-family: ''''Times New Roman''''; mso-hansi-font-family: ''''Times New Roman''''">和</SPAN><SPAN lang=EN-US>Print</SPAN><SPAN style="FONT-FAMILY: 宋体; mso-ascii-font-family: ''''Times New Roman''''; mso-hansi-font-family: ''''Times New Roman''''">对话框。其中</SPAN><SPAN lang=EN-US>OpenDialog</SPAN><SPAN style="FONT-FAMILY: 宋体; mso-ascii-font-family: ''''Times New Roman''''; mso-hansi-font-family: ''''Times New Roman''''">对话框组件最具有代表性，只要掌握了它的用法，那么你也就会使用其他的对话框组件了。</SPAN></FONT></P><P class=MsoNormalIndent style="MARGIN: 0cm 0cm 0pt; mso-char-indent-count: 2.0; mso-char-indent-size: 10.5pt"><B><SPAN lang=EN-US><FONT size=3> <?xml:namespace prefix = o ns = "urn:schemas-microsoft-com:office:office" /><o:p></o:p></FONT></SPAN></B></P><P class=MsoNormalIndent style="MARGIN: 0cm 0cm 0pt; mso-char-indent-count: 2.0; mso-char-indent-size: 10.5pt"><FONT size=3><B><SPAN lang=EN-US> 97</SPAN></B><B><SPAN style="FONT-FAMILY: 宋体; mso-ascii-font-family: ''''Times New Roman''''; mso-hansi-font-family: ''''Times New Roman''''">）问：</SPAN></B><SPAN style="FONT-FAMILY: 宋体; mso-ascii-font-family: ''''Times New Roman''''; mso-hansi-font-family: ''''Times New Roman''''">对话框组件的特性有哪些特性呢？</SPAN></FONT></P><P class=MsoNormalIndent style="MARGIN: 0cm 0cm 0pt; mso-char-indent-count: 2.0; mso-char-indent-size: 10.5pt"><FONT size=3><B><SPAN style="FONT-FAMILY: 宋体; mso-ascii-font-family: ''''Times New Roman''''; mso-hansi-font-family: ''''Times New Roman''''"> 答：</SPAN></B><SPAN style="FONT-FAMILY: 宋体; mso-ascii-font-family: ''''Times New Roman''''; mso-hansi-font-family: ''''Times New Roman''''">对话框组件是一种不可见组件。当你把它放在窗体上时，它是一个大小不变的图形按钮，当程序运行时，对话框组件不会立刻显示，而必须使用每个对话框都有的</SPAN><SPAN lang=EN-US>Execute</SPAN><SPAN style="FONT-FAMILY: 宋体; mso-ascii-font-family: ''''Times New Roman''''; mso-hansi-font-family: ''''Times New Roman''''">方法，使对话框显示出来。</SPAN></FONT></P><P class=MsoNormal style="MARGIN: 0cm 0cm 0pt; TEXT-INDENT: 21pt; mso-char-indent-count: 2.0; mso-char-indent-size: 10.5pt"><FONT size=3><SPAN lang=EN-US>C++Builder</SPAN><SPAN style="FONT-FAMILY: 宋体; mso-ascii-font-family: ''''Times New Roman''''; mso-hansi-font-family: ''''Times New Roman''''">提供的对话框大多数是有模式对话框。这种对话框要求首先必须响应该对话框，然后才能继续进行工作。所谓响应对话框就是你必须单击</SPAN><SPAN lang=EN-US>OK</SPAN><SPAN style="FONT-FAMILY: 宋体; mso-ascii-font-family: ''''Times New Roman''''; mso-hansi-font-family: ''''Times New Roman''''">或者</SPAN><SPAN lang=EN-US>Cancel</SPAN><SPAN style="FONT-FAMILY: 宋体; mso-ascii-font-family: ''''Times New Roman''''; mso-hansi-font-family: ''''Times New Roman''''">按钮，使对话框返回一个值。当用户单击对话框上的按钮</SPAN><SPAN lang=EN-US>OK</SPAN><SPAN style="FONT-FAMILY: 宋体; mso-ascii-font-family: ''''Times New Roman''''; mso-hansi-font-family: ''''Times New Roman''''">时，返回</SPAN><SPAN lang=EN-US>True</SPAN><SPAN style="FONT-FAMILY: 宋体; mso-ascii-font-family: ''''Times New Roman''''; mso-hansi-font-family: ''''Times New Roman''''">，单击</SPAN><SPAN lang=EN-US>Cancel</SPAN><SPAN style="FONT-FAMILY: 宋体; mso-ascii-font-family: ''''Times New Roman''''; mso-hansi-font-family: ''''Times New Roman''''">按钮返回</SPAN><SPAN lang=EN-US>False</SPAN><SPAN style="FONT-FAMILY: 宋体; mso-ascii-font-family: ''''Times New Roman''''; mso-hansi-font-family: ''''Times New Roman''''">。用户可以根据返回值的不同进行不同的处理。</SPAN></FONT></P><P class=MsoNormal style="MARGIN: 0cm 0cm 0pt; TEXT-INDENT: 21pt; mso-char-indent-count: 2.0; mso-char-indent-size: 10.5pt"><FONT size=3><SPAN style="FONT-FAMILY: 宋体; mso-ascii-font-family: ''''Times New Roman''''; mso-hansi-font-family: ''''Times New Roman''''">非模式的对话框使你在响应对话框之前可以完成其他的工作，不必非要首先响应对话框。这类对话框有：</SPAN><SPAN lang=EN-US>FindDialog</SPAN><SPAN style="FONT-FAMILY: 宋体; mso-ascii-font-family: ''''Times New Roman''''; mso-hansi-font-family: ''''Times New Roman''''">，</SPAN><SPAN lang=EN-US>ReplaceDialog</SPAN><SPAN style="FONT-FAMILY: 宋体; mso-ascii-font-family: ''''Times New Roman''''; mso-hansi-font-family: ''''Times New Roman''''">等。</SPAN></FONT></P><P class=MsoNormal style="MARGIN: 0cm 0cm 0pt; TEXT-INDENT: 21pt; mso-char-indent-count: 2.0; mso-char-indent-size: 10.5pt"><SPAN lang=EN-US><FONT size=3> <o:p></o:p></FONT></SPAN></P><P class=MsoNormal style="MARGIN: 0cm 0cm 0pt; TEXT-INDENT: 21pt; mso-char-indent-count: 2.0; mso-char-indent-size: 10.5pt"><FONT size=3><B><SPAN lang=EN-US>98</SPAN></B><B><SPAN style="FONT-FAMILY: 宋体; mso-ascii-font-family: ''''Times New Roman''''; mso-hansi-font-family: ''''Times New Roman''''">）问：</SPAN></B><SPAN style="FONT-FAMILY: 宋体; mso-ascii-font-family: ''''Times New Roman''''; mso-hansi-font-family: ''''Times New Roman''''">能更细点的说明对话框组件的用法吗？</SPAN></FONT></P><P class=MsoNormal style="MARGIN: 0cm 0cm 0pt; TEXT-INDENT: 21pt; mso-char-indent-count: 2.0; mso-char-indent-size: 10.5pt"><FONT size=3><B><SPAN style="FONT-FAMILY: 宋体; mso-ascii-font-family: ''''Times New Roman''''; mso-hansi-font-family: ''''Times New Roman''''">答：</SPAN></B><SPAN style="FONT-FAMILY: 宋体; mso-ascii-font-family: ''''Times New Roman''''; mso-hansi-font-family: ''''Times New Roman''''">我们就编制一个文本阅读器来说明如何使用文件打开对话框。</SPAN></FONT></P><P class=MsoNormal style="MARGIN: 0cm 0cm 0pt; TEXT-INDENT: 21pt; mso-char-indent-count: 2.0; mso-char-indent-size: 10.5pt"><FONT size=3><SPAN style="FONT-FAMILY: 宋体; mso-ascii-font-family: ''''Times New Roman''''; mso-hansi-font-family: ''''Times New Roman''''">打开一个新的窗体，我们放上一个按钮组件和一个</SPAN><SPAN lang=EN-US>Memo</SPAN><SPAN style="FONT-FAMILY: 宋体; mso-ascii-font-family: ''''Times New Roman''''; mso-hansi-font-family: ''''Times New Roman''''">组件，将</SPAN><SPAN lang=EN-US>Memo</SPAN><SPAN style="FONT-FAMILY: 宋体; mso-ascii-font-family: ''''Times New Roman''''; mso-hansi-font-family: ''''Times New Roman''''">的</SPAN><SPAN lang=EN-US>ScrollBars</SPAN><SPAN style="FONT-FAMILY: 宋体; mso-ascii-font-family: ''''Times New Roman''''; mso-hansi-font-family: ''''Times New Roman''''">属性设置为</SPAN><SPAN lang=EN-US>ssBoth</SPAN><SPAN style="FONT-FAMILY: 宋体; mso-ascii-font-family: ''''Times New Roman''''; mso-hansi-font-family: ''''Times New Roman''''">，<div id="dpsccjkdkuq">{Z供CMar"}1"</div>使得</SPAN><SPAN lang=EN-US>Memo</SPAN><SPAN style="FONT-FAMILY: 宋体; mso-ascii-font-family: ''''Times New Roman''''; mso-hansi-font-family: ''''Times New Roman''''">能够显示垂直和水平的滚动条。</SPAN></FONT></P><P class=MsoNormal style="MARGIN: 0cm 0cm 0pt; TEXT-INDENT: 21pt; mso-char-indent-count: 2.0; mso-char-indent-size: 10.5pt"><FONT size=3><SPAN style="FONT-FAMILY: 宋体; mso-ascii-font-family: ''''Times New Roman''''; mso-hansi-font-family: ''''Times New Roman''''">选中</SPAN><SPAN lang=EN-US>Lines</SPAN><SPAN style="FONT-FAMILY: 宋体; mso-ascii-font-family: ''''Times New Roman''''; mso-hansi-font-family: ''''Times New Roman''''">属性，删除里面的文本。</SPAN></FONT></P><P class=MsoNormal style="MARGIN: 0cm 0cm 0pt; TEXT-INDENT: 21pt; mso-char-indent-count: 2.0; mso-char-indent-size: 10.5pt"><FONT size=3><SPAN style="FONT-FAMILY: 宋体; mso-ascii-font-family: ''''Times New Roman''''; mso-hansi-font-family: ''''Times New Roman''''">在窗体上放置</SPAN><SPAN lang=EN-US>OpenDialog</SPAN><SPAN style="FONT-FAMILY: 宋体; mso-ascii-font-family: ''''Times New Roman''''; mso-hansi-font-family: ''''Times New Roman''''">组件。</SPAN></FONT></P><P class=MsoNormal style="MARGIN: 0cm 0cm 0pt; TEXT-INDENT: 21pt; mso-char-indent-count: 2.0; mso-char-indent-size: 10.5pt"><FONT size=3><SPAN style="FONT-FAMILY: 宋体; mso-ascii-font-family: ''''Times New Roman''''; mso-hansi-font-family: ''''Times New Roman''''">选中</SPAN><SPAN lang=EN-US>OpenDialog</SPAN><SPAN style="FONT-FAMILY: 宋体; mso-ascii-font-family: ''''Times New Roman''''; mso-hansi-font-family: ''''Times New Roman''''">组件，可以看出，</SPAN><SPAN lang=EN-US>OpenDialog</SPAN><SPAN style="FONT-FAMILY: 宋体; mso-ascii-font-family: ''''Times New Roman''''; mso-hansi-font-family: ''''Times New Roman''''">有这样一些主要的特性</SPAN></FONT></P><P class=MsoNormal style="MARGIN: 0cm 0cm 0pt; TEXT-INDENT: 21pt; mso-char-indent-count: 2.0; mso-char-indent-size: 10.5pt"><FONT size=3><SPAN lang=EN-US>FilrerIndex</SPAN><SPAN style="FONT-FAMILY: 宋体; mso-ascii-font-family: ''''Times New Roman''''; mso-hansi-font-family: ''''Times New Roman''''">属性用来指定每次打开对话框所用的缺省过滤器。</SPAN></FONT></P><P class=MsoNormal style="MARGIN: 0cm 0cm 0pt; TEXT-INDENT: 21pt; mso-char-indent-count: 2.0; mso-char-indent-size: 10.5pt"><FONT size=3><SPAN lang=EN-US>DefaultExt</SPAN><SPAN style="FONT-FAMILY: 宋体; mso-ascii-font-family: ''''Times New Roman''''; mso-hansi-font-family: ''''Times New Roman''''">属性是一个扩展名，当用户在文件编辑框中输入的文件名没有带扩展名时，对话框会用它作为文件缺省的扩展名。</SPAN></FONT></P><P class=MsoNormal style="MARGIN: 0cm 0cm 0pt; TEXT-INDENT: 21pt; mso-char-indent-count: 2.0; mso-char-indent-size: 10.5pt"><FONT size=3><SPAN lang=EN-US>InitialDir</SPAN><SPAN style="FONT-FAMILY: 宋体; mso-ascii-font-family: ''''Times New Roman''''; mso-hansi-font-family: ''''Times New Roman''''">属性用来设置对话框打开时显示的目录。</SPAN></FONT></P><P class=MsoNormal style="MARGIN: 0cm 0cm 0pt; TEXT-INDENT: 21pt; mso-char-indent-count: 2.0; mso-char-indent-size: 10.5pt"><FONT size=3><SPAN lang=EN-US>FileName</SPAN><SPAN style="FONT-FAMILY: 宋体; mso-ascii-font-family: ''''Times New Roman''''; mso-hansi-font-family: ''''Times New Roman''''">属性用来返回最近一次选中的文件的完整路径名。</SPAN></FONT></P><P class=MsoNormal style="MARGIN: 0cm 0cm 0pt; TEXT-INDENT: 23.5pt"><FONT size=3><SPAN lang=EN-US>Filter</SPAN><SPAN style="FONT-FAMILY: 宋体; mso-ascii-font-family: ''''Times New Roman''''; mso-hansi-font-family: ''''Times New Roman''''">属性，这个属性用来设计在对话框的文件列表中将列出哪些类型的文件。</SPAN></FONT></P><P class=MsoNormal style="MARGIN: 0cm 0cm 0pt; TEXT-INDENT: 23.5pt"><FONT size=3><SPAN lang=EN-US>OpenDialog</SPAN><SPAN style="FONT-FAMILY: 宋体; mso-ascii-font-family: ''''Times New Roman''''; mso-hansi-font-family: ''''Times New Roman''''">对话框提供了一个专门的编辑器来编辑属性</SPAN><SPAN lang=EN-US>filter</SPAN><SPAN style="FONT-FAMILY: 宋体; mso-ascii-font-family: ''''Times New Roman''''; mso-hansi-font-family: ''''Times New Roman''''">，单击属性</SPAN><SPAN lang=EN-US>Filter</SPAN><SPAN style="FONT-FAMILY: 宋体; mso-ascii-font-family: ''''Times New Roman''''; mso-hansi-font-family: ''''Times New Roman''''">的</SPAN><SPAN lang=EN-US>value</SPAN><SPAN style="FONT-FAMILY: 宋体; mso-ascii-font-family: ''''Times New Roman''''; mso-hansi-font-family: ''''Times New Roman''''">列中的省略好按钮就可以打开这个编辑器。</SPAN></FONT></P><P class=MsoNormal style="MARGIN: 0cm 0cm 0pt; TEXT-INDENT: 21pt; mso-char-indent-count: 2.0; mso-char-indent-size: 10.5pt"><SPAN style="FONT-FAMILY: 宋体; mso-ascii-font-family: ''''Times New Roman''''; mso-hansi-font-family: ''''Times New Roman''''"><FONT size=3>左边用来输入过滤器的名称，右边用来输入文件扩展名。</FONT></SPAN></P><P class=MsoNormal style="MARGIN: 0cm 0cm 0pt; TEXT-INDENT: 21pt; mso-char-indent-count: 2.0; mso-char-indent-size: 10.5pt"><FONT size=3><SPAN style="FONT-FAMILY: 宋体; mso-ascii-font-family: ''''Times New Roman''''; mso-hansi-font-family: ''''Times New Roman''''">现在，我们输入文本文件和</SPAN><SPAN lang=EN-US>C++</SPAN><SPAN style="FONT-FAMILY: 宋体; mso-ascii-font-family: ''''Times New Roman''''; mso-hansi-font-family: ''''Times New Roman''''">文件的过滤器。这样，在每次打开对话框时候，在文件类型下拉列表中将显示过滤器的名称。</SPAN></FONT></P><P class=MsoNormal style="MARGIN: 0cm 0cm 0pt; TEXT-INDENT: 21pt; mso-char-indent-count: 2.0; mso-char-indent-size: 10.5pt"><SPAN style="FONT-FAMILY: 宋体; mso-ascii-font-family: ''''Times New Roman''''; mso-hansi-font-family: ''''Times New Roman''''"><FONT size=3>双击文打开按钮，输入这样一段代码：</FONT></SPAN></P><P class=MsoNormal style="MARGIN: 0cm 0cm 0pt; TEXT-INDENT: 21pt; mso-char-indent-count: 2.0; mso-char-indent-size: 10.5pt"><SPAN lang=EN-US><FONT size=3>//---------------------------------------------------------------------------</FONT></SPAN></P><P class=MsoNormal style="MARGIN: 0cm 0cm 0pt; TEXT-INDENT: 21pt; mso-char-indent-count: 2.0; mso-char-indent-size: 10.5pt"><SPAN lang=EN-US><FONT size=3> <o:p></o:p></FONT></SPAN></P><P class=MsoNormal style="MARGIN: 0cm 0cm 0pt; TEXT-INDENT: 21pt; mso-char-indent-count: 2.0; mso-char-indent-size: 10.5pt"><SPAN lang=EN-US><FONT size=3>#include <vcl.h></FONT></SPAN></P><P class=MsoNormal style="MARGIN: 0cm 0cm 0pt; TEXT-INDENT: 21pt; mso-char-indent-count: 2.0; mso-char-indent-size: 10.5pt"><SPAN lang=EN-US><FONT size=3>#pragma hdrstop</FONT></SPAN></P><P class=MsoNormal style="MARGIN: 0cm 0cm 0pt; TEXT-INDENT: 21pt; mso-char-indent-count: 2.0; mso-char-indent-size: 10.5pt"><SPAN lang=EN-US><FONT size=3> <o:p></o:p></FONT></SPAN></P><P class=MsoNormal style="MARGIN: 0cm 0cm 0pt; TEXT-INDENT: 21pt; mso-char-indent-count: 2.0; mso-char-indent-size: 10.5pt"><SPAN lang=EN-US><FONT size=3>#include "Unit1.h"</FONT></SPAN></P><P class=MsoNormal style="MARGIN: 0cm 0cm 0pt; TEXT-INDENT: 21pt; mso-char-indent-count: 2.0; mso-char-indent-size: 10.5pt"><SPAN lang=EN-US><FONT size=3>//---------------------------------------------------------------------------</FONT></SPAN></P><P class=MsoNormal style="MARGIN: 0cm 0cm 0pt; TEXT-INDENT: 21pt; mso-char-indent-count: 2.0; mso-char-indent-size: 10.5pt"><SPAN lang=EN-US><FONT size=3>#pragma package(smart_init)</FONT></SPAN></P><P class=MsoNormal style="MARGIN: 0cm 0cm 0pt; TEXT-INDENT: 21pt; mso-char-indent-count: 2.0; mso-char-indent-size: 10.5pt"><SPAN lang=EN-US><FONT size=3>#pragma resource "*.dfm"</FONT></SPAN></P><P class=MsoNormal style="MARGIN: 0cm 0cm 0pt; TEXT-INDENT: 21pt; mso-char-indent-count: 2.0; mso-char-indent-size: 10.5pt"><SPAN lang=EN-US><FONT size=3>TForm1 *Form1;</FONT></SPAN></P><P class=MsoNormal style="MARGIN: 0cm 0cm 0pt; TEXT-INDENT: 21pt; mso-char-indent-count: 2.0; mso-char-indent-size: 10.5pt"><SPAN lang=EN-US><FONT size=3>//---------------------------------------------------------------------------</FONT></SPAN></P><P class=MsoNormal style="MARGIN: 0cm 0cm 0pt; TEXT-INDENT: 21pt; mso-char-indent-count: 2.0; mso-char-indent-size: 10.5pt"><SPAN lang=EN-US><FONT size=3>__fastcall TForm1::TForm1(TComponent* Owner)</FONT></SPAN></P><P class=MsoNormal style="MARGIN: 0cm 0cm 0pt; TEXT-INDENT: 21pt; mso-char-indent-count: 2.0; mso-char-indent-size: 10.5pt"><SPAN lang=EN-US><FONT size=3><SPAN style="mso-spacerun: yes"> </SPAN>: TForm(Owner)</FONT></SPAN></P><P class=MsoNormal style="MARGIN: 0cm 0cm 0pt; TEXT-INDENT: 21pt; mso-char-indent-count: 2.0; mso-char-indent-size: 10.5pt"><SPAN lang=EN-US><FONT size=3>{</FONT></SPAN></P><P class=MsoNormal style="MARGIN: 0cm 0cm 0pt; TEXT-INDENT: 21pt; mso-char-indent-count: 2.0; mso-char-indent-size: 10.5pt"><SPAN lang=EN-US><FONT size=3>}</FONT></SPAN></P><P class=MsoNormal style="MARGIN: 0cm 0cm 0pt; TEXT-INDENT: 21pt; mso-char-indent-count: 2.0; mso-char-indent-size: 10.5pt"><SPAN lang=EN-US><FONT size=3>//---------------------------------------------------------------------------</FONT></SPAN></P><P class=MsoNormal style="MARGIN: 0cm 0cm 0pt; TEXT-INDENT: 21pt; mso-char-indent-count: 2.0; mso-char-indent-size: 10.5pt"><SPAN lang=EN-US><FONT size=3> <o:p></o:p></FONT></SPAN></P><P class=MsoNormal style="MARGIN: 0cm 0cm 0pt; TEXT-INDENT: 21pt; mso-char-indent-count: 2.0; mso-char-indent-size: 10.5pt"><SPAN lang=EN-US><FONT size=3>void __fastcall TForm1::Button1Click(TObject *Sender)</FONT></SPAN></P><P class=MsoNormal style="MARGIN: 0cm 0cm 0pt; TEXT-INDENT: 21pt; mso-char-indent-count: 2.0; mso-char-indent-size: 10.5pt"><SPAN lang=EN-US><FONT size=3>{</FONT></SPAN></P><P class=MsoNormal style="MARGIN: 0cm 0cm 0pt; TEXT-INDENT: 21pt; mso-char-indent-count: 2.0; mso-char-indent-size: 10.5pt"><FONT size=3><SPAN lang=EN-US><SPAN style="mso-spacerun: yes"> </SPAN>if(OpenDialog1->Execute())//</SPAN><SPAN style="FONT-FAMILY: 宋体; mso-ascii-font-family: ''''Times New Roman''''; mso-hansi-font-family: ''''Times New Roman''''">首先执行打开文件对话框函数，<p id="ltpkvsuqgetbav">的]~@.cw@JT+*S_</p><p id="hqnuwsiwnrsonsnunl">9的_专%o+|0?nq!Xm1Se</p>这时，打开文件对话框才显示出来。如果执行成功，这个函数返回</SPAN><SPAN lang=EN-US>true</SPAN><SPAN style="FONT-FAMILY: 宋体; mso-ascii-font-family: ''''Times New Roman''''; mso-hansi-font-family: ''''Times New Roman''''">，否则返回</SPAN><SPAN lang=EN-US>false</SPAN></FONT></P><P class=MsoNormal style="MARGIN: 0cm 0cm 0pt; TEXT-INDENT: 21pt; mso-char-indent-count: 2.0; mso-char-indent-size: 10.5pt"><SPAN lang=EN-US><FONT size=3><SPAN style="mso-spacerun: yes"> </SPAN>{</FONT></SPAN></P><P class=MsoNormal style="MARGIN: 0cm 0cm 0pt; TEXT-INDENT: 21pt; mso-char-indent-count: 2.0; mso-char-indent-size: 10.5pt"><FONT size=3><SPAN lang=EN-US><SPAN style="mso-spacerun: yes"> </SPAN>Memo1->Lines->Clear();//</SPAN><SPAN style="FONT-FAMILY: 宋体; mso-ascii-font-family: ''''Times New Roman''''; mso-hansi-font-family: ''''Times New Roman''''">把</SPAN><SPAN lang=EN-US>Memo</SPAN><SPAN style="FONT-FAMILY: 宋体; mso-ascii-font-family: ''''Times New Roman''''; mso-hansi-font-family: ''''Times New Roman''''">中的内容清掉</SPAN></FONT></P><P class=MsoNormal style="MARGIN: 0cm 0cm 0pt; TEXT-INDENT: 21pt; mso-char-indent-count: 2.0; mso-char-indent-size: 10.5pt"><FONT size=3><SPAN lang=EN-US><SPAN style="mso-spacerun: yes"> </SPAN>Caption=OpenDialog1->FileName; //</SPAN><SPAN style="FONT-FAMILY: 宋体; mso-ascii-font-family: ''''Times New Roman''''; mso-hansi-font-family: ''''Times New Roman''''">获得用户选择的文件的路径名，<div id="ppbkgksknfmfqcn">\{pAs=\TaQ国dnF的</div>并将它设置成窗体的标题。注意，因为是在</SPAN><SPAN lang=EN-US>Form1</SPAN><SPAN style="FONT-FAMILY: 宋体; mso-ascii-font-family: ''''Times New Roman''''; mso-hansi-font-family: ''''Times New Roman''''">窗口（容器）中进行的操作，所以</SPAN><SPAN lang=EN-US>Caption</SPAN><SPAN style="FONT-FAMILY: 宋体; mso-ascii-font-family: ''''Times New Roman''''; mso-hansi-font-family: ''''Times New Roman''''">前省了</SPAN><SPAN lang=EN-US>Form1</SPAN><SPAN style="FONT-FAMILY: 宋体; mso-ascii-font-family: ''''Times New Roman''''; mso-hansi-font-family: ''''Times New Roman''''">，<div id="vssmacwntd">理oC@;ajSD网</div>当然你可以加上</SPAN></FONT></P><P class=MsoNormal style="MARGIN: 0cm 0cm 0pt; TEXT-INDENT: 21pt; mso-char-indent-count: 2.0; mso-char-indent-size: 10.5pt"><FONT size=3><SPAN lang=EN-US><SPAN style="mso-spacerun: yes"> </SPAN>Memo1->Lines->LoadFromFile(OpenDialog1->FileName);// </SPAN><SPAN style="FONT-FAMILY: 宋体; mso-ascii-font-family: ''''Times New Roman''''; mso-hansi-font-family: ''''Times New Roman''''">调用文本装入函数从文件中装入文本，并显示在编辑框中</SPAN></FONT></P><P class=MsoNormal style="MARGIN: 0cm 0cm 0pt; TEXT-INDENT: 21pt; mso-char-indent-count: 2.0; mso-char-indent-size: 10.5pt"><SPAN lang=EN-US><FONT size=3><SPAN style="mso-spacerun: yes"> </SPAN>}</FONT></SPAN></P><P class=MsoNormal style="MARGIN: 0cm 0cm 0pt; TEXT-INDENT: 21pt; mso-char-indent-count: 2.0; mso-char-indent-size: 10.5pt"><SPAN lang=EN-US><FONT size=3>}</FONT></SPAN></P><P class=MsoNormal style="MARGIN: 0cm 0cm 0pt; TEXT-INDENT: 21pt; mso-char-indent-count: 2.0; mso-char-indent-size: 10.5pt"><SPAN lang=EN-US><FONT size=3>//---------------------------------------------------------------------------</FONT></SPAN></P><P class=MsoNormal style="MARGIN: 0cm 0cm 0pt; TEXT-INDENT: 21pt; mso-char-indent-count: 2.0; mso-char-indent-size: 10.5pt"><SPAN lang=EN-US><FONT size=3> <o:p></o:p></FONT></SPAN></P><P class=MsoNormal style="MARGIN: 0cm 0cm 0pt; TEXT-INDENT: 21pt; mso-char-indent-count: 2.0; mso-char-indent-size: 10.5pt"><FONT size=3><B><SPAN lang=EN-US>99</SPAN></B><B><SPAN style="FONT-FAMILY: 宋体; mso-ascii-font-family: ''''Times New Roman''''; mso-hansi-font-family: ''''Times New Roman''''">）问：</SPAN></B><SPAN style="FONT-FAMILY: 宋体; mso-ascii-font-family: ''''Times New Roman''''; mso-hansi-font-family: ''''Times New Roman''''">其它对话框的各有什么重要属性？</SPAN></FONT></P><P class=MsoBodyTextIndent style="MARGIN: 0cm 0cm 0pt; TEXT-INDENT: 21pt; mso-char-indent-count: 2.0; mso-char-indent-size: 10.5pt"><FONT size=3><B><SPAN style="COLOR: windowtext; FONT-FAMILY: 宋体; mso-ascii-font-family: ''''Times New Roman''''; mso-hansi-font-family: ''''Times New Roman''''">答：</SPAN></B><SPAN style="COLOR: windowtext; FONT-FAMILY: 宋体; mso-ascii-font-family: ''''Times New Roman''''; mso-hansi-font-family: ''''Times New Roman''''">保存对话框</SPAN><SPAN lang=EN-US style="COLOR: windowtext">SaveDialog</SPAN><SPAN style="COLOR: windowtext; FONT-FAMILY: 宋体; mso-ascii-font-family: ''''Times New Roman''''; mso-hansi-font-family: ''''Times New Roman''''">与打开对话框非常相似，至于</SPAN><SPAN lang=EN-US style="COLOR: windowtext">OpenPictureDialog</SPAN><SPAN style="COLOR: windowtext; FONT-FAMILY: 宋体; mso-ascii-font-family: ''''Times New Roman''''; mso-hansi-font-family: ''''Times New Roman''''">、</SPAN><SPAN lang=EN-US style="COLOR: windowtext">SavePictureDialog</SPAN><SPAN style="COLOR: windowtext; FONT-FAMILY: 宋体; mso-ascii-font-family: ''''Times New Roman''''; mso-hansi-font-family: ''''Times New Roman''''">就不用多说了。其它象字体对话框</SPAN><SPAN lang=EN-US style="COLOR: windowtext">FontDialog</SPAN><SPAN style="COLOR: windowtext; FONT-FAMILY: 宋体; mso-ascii-font-family: ''''Times New Roman''''; mso-hansi-font-family: ''''Times New Roman''''">的</SPAN><SPAN lang=EN-US style="COLOR: windowtext">Font</SPAN><SPAN style="COLOR: windowtext; FONT-FAMILY: 宋体; mso-ascii-font-family: ''''Times New Roman''''; mso-hansi-font-family: ''''Times New Roman''''">属性；颜色对话框</SPAN><SPAN lang=EN-US style="COLOR: windowtext">ColorDialog</SPAN><SPAN style="COLOR: windowtext; FONT-FAMILY: 宋体; mso-ascii-font-family: ''''Times New Roman''''; mso-hansi-font-family: ''''Times New Roman''''">的</SPAN><SPAN lang=EN-US style="COLOR: windowtext">Color</SPAN><SPAN style="COLOR: windowtext; FONT-FAMILY: 宋体; mso-ascii-font-family: ''''Times New Roman''''; mso-hansi-font-family: ''''Times New Roman''''">属性；查找对话框</SPAN><SPAN lang=EN-US style="COLOR: windowtext">FindDialog</SPAN><SPAN style="COLOR: windowtext; FONT-FAMILY: 宋体; mso-ascii-font-family: ''''Times New Roman''''; mso-hansi-font-family: ''''Times New Roman''''">的</SPAN><SPAN lang=EN-US style="COLOR: windowtext">FindText</SPAN><SPAN style="COLOR: windowtext; FONT-FAMILY: 宋体; mso-ascii-font-family: ''''Times New Roman''''; mso-hansi-font-family: ''''Times New Roman''''">。这里就不用多说了，<p id="giprrwdkfmfvvjajci">CH'Yp-软.xaY\oo%j专|</p>看一下就明白了。</SPAN><SPAN lang=EN-US style="COLOR: windowtext"><o:p></o:p></SPAN></FONT></P><P class=MsoBodyTextIndent style="MARGIN: 0cm 0cm 0pt; TEXT-INDENT: 21pt; mso-char-indent-count: 2.0; mso-char-indent-size: 10.5pt"><FONT size=3><B><SPAN lang=EN-US style="COLOR: windowtext">100</SPAN></B><B><SPAN style="COLOR: windowtext; FONT-FAMILY: 宋体; mso-ascii-font-family: ''''Times New Roman''''; mso-hansi-font-family: ''''Times New Roman''''">）问：</SPAN></B><SPAN style="COLOR: windowtext; FONT-FAMILY: 宋体; mso-ascii-font-family: ''''Times New Roman''''; mso-hansi-font-family: ''''Times New Roman''''">对话框组难道就只能用上面说的那些组件吗？要是有，能介绍一下吗？</SPAN><SPAN lang=EN-US style="COLOR: windowtext"><o:p></o:p></SPAN></FONT></P><P class=MsoBodyTextIndent style="MARGIN: 0cm 0cm 0pt; TEXT-INDENT: 21pt; mso-char-indent-count: 2.0; mso-char-indent-size: 10.5pt"><FONT size=3><B><SPAN style="COLOR: windowtext; FONT-FAMILY: 宋体; mso-ascii-font-family: ''''Times New Roman''''; mso-hansi-font-family: ''''Times New Roman''''">答：</SPAN></B><SPAN style="COLOR: windowtext; FONT-FAMILY: 宋体; mso-ascii-font-family: ''''Times New Roman''''; mso-hansi-font-family: ''''Times New Roman''''">在</SPAN><SPAN lang=EN-US style="COLOR: windowtext">C++ Builder</SPAN><SPAN style="COLOR: windowtext; FONT-FAMILY: 宋体; mso-ascii-font-family: ''''Times New Roman''''; mso-hansi-font-family: ''''Times New Roman''''">集成开发环境的可视化组件中库中，给应用程序开发员提供了一系列的标准的对话框函数。我们可以直接调用这些函数来显示一些标准的对话框。</SPAN><SPAN lang=EN-US style="COLOR: windowtext"><o:p></o:p></SPAN></FONT></P><P class=MsoBodyTextIndent style="MARGIN: 0cm 0cm 0pt; TEXT-INDENT: 21pt; mso-char-indent-count: 2.0; mso-char-indent-size: 10.5pt"><FONT size=3><SPAN style="COLOR: windowtext; FONT-FAMILY: 宋体; mso-ascii-font-family: ''''Times New Roman''''; mso-hansi-font-family: ''''Times New Roman''''">这类函数还真不少，但我们只要掌握以下五个就足够了</SPAN><SPAN lang=EN-US style="COLOR: windowtext; FONT-FAMILY: Wingdings; mso-ascii-font-family: ''''Times New Roman''''; mso-hansi-font-family: ''''Times New Roman''''; mso-char-type: symbol; mso-symbol-font-family: Wingdings"><SPAN style="mso-char-type: symbol; mso-symbol-font-family: Wingdings">J</SPAN></SPAN><SPAN lang=EN-US style="COLOR: windowtext"><o:p></o:p></SPAN></FONT></P><P class=MsoBodyTextIndent style="MARGIN: 0cm 0cm 0pt; TEXT-INDENT: 21pt; mso-char-indent-count: 2.0; mso-char-indent-size: 10.5pt"><FONT size=3><B><SPAN lang=EN-US style="COLOR: windowtext">extern PACKAGE int _fastcall MessageDlg(const AnsiString Msg,TmsgDlgType DlgType,TmsgDlgButtons Buttons,int HelpCtx)</SPAN></B><SPAN style="COLOR: windowtext; FONT-FAMILY: 宋体; mso-ascii-font-family: ''''Times New Roman''''; mso-hansi-font-family: ''''Times New Roman''''">：用来在计算机屏幕中央显示对话框。</SPAN><SPAN lang=EN-US style="COLOR: windowtext"><o:p></o:p></SPAN></FONT></P><P class=MsoBodyTextIndent style="MARGIN: 0cm 0cm 0pt; TEXT-INDENT: 21pt; mso-char-indent-count: 2.0; mso-char-indent-size: 10.5pt"><FONT size=3><SPAN style="COLOR: windowtext; FONT-FAMILY: 宋体; mso-ascii-font-family: ''''Times New Roman''''; mso-hansi-font-family: ''''Times New Roman''''">其中，参数</SPAN><SPAN lang=EN-US style="COLOR: windowtext">Msg</SPAN><SPAN style="COLOR: windowtext; FONT-FAMILY: 宋体; mso-ascii-font-family: ''''Times New Roman''''; mso-hansi-font-family: ''''Times New Roman''''">是指定要对话框中显示的字符串。</SPAN><SPAN lang=EN-US style="COLOR: windowtext"><o:p></o:p></SPAN></FONT></P><P class=MsoBodyTextIndent style="MARGIN: 0cm 0cm 0pt; TEXT-INDENT: 21pt; mso-char-indent-count: 2.0; mso-char-indent-size: 10.5pt"><FONT size=3><SPAN style="COLOR: windowtext; FONT-FAMILY: 宋体; mso-ascii-font-family: ''''Times New Roman''''; mso-hansi-font-family: ''''Times New Roman''''">参数</SPAN><SPAN lang=EN-US style="COLOR: windowtext">DlgType</SPAN><SPAN style="COLOR: windowtext; FONT-FAMILY: 宋体; mso-ascii-font-family: ''''Times New Roman''''; mso-hansi-font-family: ''''Times New Roman''''">是</SPAN><SPAN lang=EN-US style="COLOR: windowtext">TMsgDlgType</SPAN><SPAN style="COLOR: windowtext; FONT-FAMILY: 宋体; mso-ascii-font-family: ''''Times New Roman''''; mso-hansi-font-family: ''''Times New Roman''''">类的变量，它用来指定对话框的显示特征。</SPAN><SPAN lang=EN-US style="COLOR: windowtext">TmsgDlgType</SPAN><SPAN style="COLOR: windowtext; FONT-FAMILY: 宋体; mso-ascii-font-family: ''''Times New Roman''''; mso-hansi-font-family: ''''Times New Roman''''">是一个集合，它可以取以下的值：</SPAN><SPAN lang=EN-US style="COLOR: windowtext"><o:p></o:p></SPAN></FONT></P><P class=MsoBodyTextIndent style="MARGIN: 0cm 0cm 0pt; TEXT-INDENT: 21pt; mso-char-indent-count: 2.0; mso-char-indent-size: 10.5pt"><FONT size=3><SPAN lang=EN-US style="COLOR: windowtext">mtWarning</SPAN><SPAN style="COLOR: windowtext; FONT-FAMILY: 宋体; mso-ascii-font-family: ''''Times New Roman''''; mso-hansi-font-family: ''''Times New Roman''''">：对话框中包含黄色的惊叹符号；</SPAN><SPAN lang=EN-US style="COLOR: windowtext"><o:p></o:p></SPAN></FONT></P><P class=MsoBodyTextIndent style="MARGIN: 0cm 0cm 0pt; TEXT-INDENT: 21pt; mso-char-indent-count: 2.0; mso-char-indent-size: 10.5pt"><FONT size=3><SPAN lang=EN-US style="COLOR: windowtext">mtError</SPAN><SPAN style="COLOR: windowtext; FONT-FAMILY: 宋体; mso-ascii-font-family: ''''Times New Roman''''; mso-hansi-font-family: ''''Times New Roman''''">：对话框中包含红色的惊叹符号；</SPAN><SPAN lang=EN-US style="COLOR: windowtext"><o:p></o:p></SPAN></FONT></P><P class=MsoBodyTextIndent style="MARGIN: 0cm 0cm 0pt; TEXT-INDENT: 21pt; mso-char-indent-count: 2.0; mso-char-indent-size: 10.5pt"><FONT size=3><SPAN lang=EN-US style="COLOR: windowtext">mtInformation</SPAN><SPAN style="COLOR: windowtext; FONT-FAMILY: 宋体; mso-ascii-font-family: ''''Times New Roman''''; mso-hansi-font-family: ''''Times New Roman''''">：对话框中包含蓝色的“</SPAN><SPAN lang=EN-US style="COLOR: windowtext">I</SPAN><SPAN style="COLOR: windowtext; FONT-FAMILY: 宋体; mso-ascii-font-family: ''''Times New Roman''''; mso-hansi-font-family: ''''Times New Roman''''">”符号；</SPAN><SPAN lang=EN-US style="COLOR: windowtext"><o:p></o:p></SPAN></FONT></P><P class=MsoBodyTextIndent style="MARGIN: 0cm 0cm 0pt; TEXT-INDENT: 21pt; mso-char-indent-count: 2.0; mso-char-indent-size: 10.5pt"><FONT size=3><SPAN lang=EN-US style="COLOR: windowtext">mtConfirmation</SPAN><SPAN style="COLOR: windowtext; FONT-FAMILY: 宋体; mso-ascii-font-family: ''''Times New Roman''''; mso-hansi-font-family: ''''Times New Roman''''">：对话框中包含绿色的问号；</SPAN><SPAN lang=EN-US style="COLOR: windowtext"><o:p></o:p></SPAN></FONT></P><P class=MsoBodyTextIndent style="MARGIN: 0cm 0cm 0pt; TEXT-INDENT: 21pt; mso-char-indent-count: 2.0; mso-char-indent-size: 10.5pt"><FONT size=3><SPAN lang=EN-US style="COLOR: windowtext">mtCustom</SPAN><SPAN style="COLOR: windowtext; FONT-FAMILY: 宋体; mso-ascii-font-family: ''''Times New Roman''''; mso-hansi-font-family: ''''Times New Roman''''">：对话框中不包含位图符号，标题名称为应用程序名称。</SPAN><SPAN lang=EN-US style="COLOR: windowtext"><o:p></o:p></SPAN></FONT></P><P class=MsoBodyTextIndent style="MARGIN: 0cm 0cm 0pt; TEXT-INDENT: 21pt; mso-char-indent-count: 2.0; mso-char-indent-size: 10.5pt"><FONT size=3><SPAN style="COLOR: windowtext; FONT-FAMILY: 宋体; mso-ascii-font-family: ''''Times New Roman''''; mso-hansi-font-family: ''''Times New Roman''''">参数</SPAN><SPAN lang=EN-US style="COLOR: windowtext">Buttons</SPAN><SPAN style="COLOR: windowtext; FONT-FAMILY: 宋体; mso-ascii-font-family: ''''Times New Roman''''; mso-hansi-font-family: ''''Times New Roman''''">是用来指定对话框中包含的按钮的类型，它是一个集合，可以是以下若干个元素的组合：</SPAN><SPAN lang=EN-US style="COLOR: windowtext"><o:p></o:p></SPAN></FONT></P><P class=MsoBodyTextIndent style="MARGIN: 0cm 0cm 0pt; TEXT-INDENT: 21pt; mso-char-indent-count: 2.0; mso-char-indent-size: 10.5pt"><FONT size=3><SPAN lang=EN-US style="COLOR: windowtext">mbYes</SPAN><SPAN style="COLOR: windowtext; FONT-FAMILY: 宋体; mso-ascii-font-family: ''''Times New Roman''''; mso-hansi-font-family: ''''Times New Roman''''">：对话框含有“</SPAN><SPAN lang=EN-US style="COLOR: windowtext">Yes</SPAN><SPAN style="COLOR: windowtext; FONT-FAMILY: 宋体; mso-ascii-font-family: ''''Times New Roman''''; mso-hansi-font-family: ''''Times New Roman''''">”按钮；</SPAN><SPAN lang=EN-US style="COLOR: windowtext"><o:p></o:p></SPAN></FONT></P><P class=MsoBodyTextIndent style="MARGIN: 0cm 0cm 0pt; TEXT-INDENT: 21pt; mso-char-indent-count: 2.0; mso-char-indent-size: 10.5pt"><FONT size=3><SPAN lang=EN-US style="COLOR: windowtext">mbNo </SPAN><SPAN style="COLOR: windowtext; FONT-FAMILY: 宋体; mso-ascii-font-family: ''''Times New Roman''''; mso-hansi-font-family: ''''Times New Roman''''">：对话框含有“</SPAN><SPAN lang=EN-US style="COLOR: windowtext">No</SPAN><SPAN style="COLOR: windowtext; FONT-FAMILY: 宋体; mso-ascii-font-family: ''''Times New Roman''''; mso-hansi-font-family: ''''Times New Roman''''">”按钮；</SPAN><SPAN lang=EN-US style="COLOR: windowtext"><o:p></o:p></SPAN></FONT></P><P class=MsoBodyTextIndent style="MARGIN: 0cm 0cm 0pt; TEXT-INDENT: 21pt; mso-char-indent-count: 2.0; mso-char-indent-size: 10.5pt"><FONT size=3><SPAN lang=EN-US style="COLOR: windowtext">mbOK</SPAN><SPAN style="COLOR: windowtext; FONT-FAMILY: 宋体; mso-ascii-font-family: ''''Times New Roman''''; mso-hansi-font-family: ''''Times New Roman''''">：对话框含有“</SPAN><SPAN lang=EN-US style="COLOR: windowtext">OK</SPAN><SPAN style="COLOR: windowtext; FONT-FAMILY: 宋体; mso-ascii-font-family: ''''Times New Roman''''; mso-hansi-font-family: ''''Times New Roman''''">”按钮；</SPAN><SPAN lang=EN-US style="COLOR: windowtext"><o:p></o:p></SPAN></FONT></P><P class=MsoBodyTextIndent style="MARGIN: 0cm 0cm 0pt; TEXT-INDENT: 21pt; mso-char-indent-count: 2.0; mso-char-indent-size: 10.5pt"><FONT size=3><SPAN lang=EN-US style="COLOR: windowtext">mbCancel </SPAN><SPAN style="COLOR: windowtext; FONT-FAMILY: 宋体; mso-ascii-font-family: ''''Times New Roman''''; mso-hansi-font-family: ''''Times New Roman''''">：对话框含有“</SPAN><SPAN lang=EN-US style="COLOR: windowtext">Cancel</SPAN><SPAN style="COLOR: windowtext; FONT-FAMILY: 宋体; mso-ascii-font-family: ''''Times New Roman''''; mso-hansi-font-family: ''''Times New Roman''''">”按钮；</SPAN><SPAN lang=EN-US style="COLOR: windowtext"><o:p></o:p></SPAN></FONT></P><P class=MsoBodyTextIndent style="MARGIN: 0cm 0cm 0pt; TEXT-INDENT: 21pt; mso-char-indent-count: 2.0; mso-char-indent-size: 10.5pt"><FONT size=3><SPAN lang=EN-US style="COLOR: windowtext">mbAbort </SPAN><SPAN style="COLOR: windowtext; FONT-FAMILY: 宋体; mso-ascii-font-family: ''''Times New Roman''''; mso-hansi-font-family: ''''Times New Roman''''">：对话框含有“</SPAN><SPAN lang=EN-US style="COLOR: windowtext">Abort</SPAN><SPAN style="COLOR: windowtext; FONT-FAMILY: 宋体; mso-ascii-font-family: ''''Times New Roman''''; mso-hansi-font-family: ''''Times New Roman''''">”按钮；</SPAN><SPAN lang=EN-US style="COLOR: windowtext"><o:p></o:p></SPAN></FONT></P><P class=MsoBodyTextIndent style="MARGIN: 0cm 0cm 0pt; TEXT-INDENT: 21pt; mso-char-indent-count: 2.0; mso-char-indent-size: 10.5pt"><FONT size=3><SPAN lang=EN-US style="COLOR: windowtext">mbRetry </SPAN><SPAN style="COLOR: windowtext; FONT-FAMILY: 宋体; mso-ascii-font-family: ''''Times New Roman''''; mso-hansi-font-family: ''''Times New Roman''''">：对话框含有“</SPAN><SPAN lang=EN-US style="COLOR: windowtext">Retry</SPAN><SPAN style="COLOR: windowtext; FONT-FAMILY: 宋体; mso-ascii-font-family: ''''Times New Roman''''; mso-hansi-font-family: ''''Times New Roman''''">”按钮；</SPAN><SPAN lang=EN-US style="COLOR: windowtext"><o:p></o:p></SPAN></FONT></P><P class=MsoBodyTextIndent style="MARGIN: 0cm 0cm 0pt; TEXT-INDENT: 21pt; mso-char-indent-count: 2.0; mso-char-indent-size: 10.5pt"><FONT size=3><SPAN lang=EN-US style="COLOR: windowtext">mbIgnore </SPAN><SPAN style="COLOR: windowtext; FONT-FAMILY: 宋体; mso-ascii-font-family: ''''Times New Roman''''; mso-hansi-font-family: ''''Times New Roman''''">：对话框含有“</SPAN><SPAN lang=EN-US style="COLOR: windowtext">Ignore</SPAN><SPAN style="COLOR: windowtext; FONT-FAMILY: 宋体; mso-ascii-font-family: ''''Times New Roman''''; mso-hansi-font-family: ''''Times New Roman''''">”按钮；</SPAN><SPAN lang=EN-US style="COLOR: windowtext"><o:p></o:p></SPAN></FONT></P><P class=MsoBodyTextIndent style="MARGIN: 0cm 0cm 0pt; TEXT-INDENT: 21pt; mso-char-indent-count: 2.0; mso-char-indent-size: 10.5pt"><FONT size=3><SPAN lang=EN-US style="COLOR: windowtext">mbAll </SPAN><SPAN style="COLOR: windowtext; FONT-FAMILY: 宋体; mso-ascii-font-family: ''''Times New Roman''''; mso-hansi-font-family: ''''Times New Roman''''">：对话框含有“</SPAN><SPAN lang=EN-US style="COLOR: windowtext">All</SPAN><SPAN style="COLOR: windowtext; FONT-FAMILY: 宋体; mso-ascii-font-family: ''''Times New Roman''''; mso-hansi-font-family: ''''Times New Roman''''">”按钮；</SPAN><SPAN lang=EN-US style="COLOR: windowtext"><o:p></o:p></SPAN></FONT></P><P class=MsoBodyTextIndent style="MARGIN: 0cm 0cm 0pt; TEXT-INDENT: 21pt; mso-char-indent-count: 2.0; mso-char-indent-size: 10.5pt"><FONT size=3><SPAN lang=EN-US style="COLOR: windowtext">mbNoToAll </SPAN><SPAN style="COLOR: windowtext; FONT-FAMILY: 宋体; mso-ascii-font-family: ''''Times New Roman''''; mso-hansi-font-family: ''''Times New Roman''''">：对话框含有“</SPAN><SPAN lang=EN-US style="COLOR: windowtext">NoToAll</SPAN><SPAN style="COLOR: windowtext; FONT-FAMILY: 宋体; mso-ascii-font-family: ''''Times New Roman''''; mso-hansi-font-family: ''''Times New Roman''''">”按钮；</SPAN><SPAN lang=EN-US style="COLOR: windowtext"><o:p></o:p></SPAN></FONT></P><P class=MsoBodyTextIndent style="MARGIN: 0cm 0cm 0pt; TEXT-INDENT: 21pt; mso-char-indent-count: 2.0; mso-char-indent-size: 10.5pt"><FONT size=3><SPAN lang=EN-US style="COLOR: windowtext">mbYesToAll </SPAN><SPAN style="COLOR: windowtext; FONT-FAMILY: 宋体; mso-ascii-font-family: ''''Times New Roman''''; mso-hansi-font-family: ''''Times New Roman''''">：对话框含有“</SPAN><SPAN lang=EN-US style="COLOR: windowtext">YesToAll</SPAN><SPAN style="COLOR: windowtext; FONT-FAMILY: 宋体; mso-ascii-font-family: ''''Times New Roman''''; mso-hansi-font-family: ''''Times New Roman''''">”按钮；</SPAN><SPAN lang=EN-US style="COLOR: windowtext"><o:p></o:p></SPAN></FONT></P><P class=MsoBodyTextIndent style="MARGIN: 0cm 0cm 0pt; TEXT-INDENT: 21pt; mso-char-indent-count: 2.0; mso-char-indent-size: 10.5pt"><FONT size=3><SPAN lang=EN-US style="COLOR: windowtext">mbHelp </SPAN><SPAN style="COLOR: windowtext; FONT-FAMILY: 宋体; mso-ascii-font-family: ''''Times New Roman''''; mso-hansi-font-family: ''''Times New Roman''''">：对话框含有“</SPAN><SPAN lang=EN-US style="COLOR: windowtext">Help</SPAN><SPAN style="COLOR: windowtext; FONT-FAMILY: 宋体; mso-ascii-font-family: ''''Times New Roman''''; mso-hansi-font-family: ''''Times New Roman''''">”按钮</SPAN><SPAN lang=EN-US style="COLOR: windowtext">.<o:p></o:p></SPAN></FONT></P><P class=MsoBodyTextIndent style="MARGIN: 0cm 0cm 0pt; TEXT-INDENT: 21pt; mso-char-indent-count: 2.0; mso-char-indent-size: 10.5pt"><FONT size=3><SPAN lang=EN-US style="COLOR: windowtext">C++ Builder</SPAN><SPAN style="COLOR: windowtext; FONT-FAMILY: 宋体; mso-ascii-font-family: ''''Times New Roman''''; mso-hansi-font-family: ''''Times New Roman''''">还专门定义了三个常用的按钮组合：</SPAN><SPAN lang=EN-US style="COLOR: windowtext"><o:p></o:p></SPAN></FONT></P><P class=MsoBodyTextIndent style="MARGIN: 0cm 0cm 0pt; TEXT-INDENT: 21pt; mso-char-indent-count: 2.0; mso-char-indent-size: 10.5pt"><FONT size=3><SPAN lang=EN-US style="COLOR: windowtext">mbYesNoCancel</SPAN><SPAN style="COLOR: windowtext; FONT-FAMILY: 宋体; mso-ascii-font-family: ''''Times New Roman''''; mso-hansi-font-family: ''''Times New Roman''''">：包含了</SPAN><SPAN lang=EN-US style="COLOR: windowtext">mbYes</SPAN><SPAN style="COLOR: windowtext; FONT-FAMILY: 宋体; mso-ascii-font-family: ''''Times New Roman''''; mso-hansi-font-family: ''''Times New Roman''''">、</SPAN><SPAN lang=EN-US style="COLOR: windowtext">mbNo</SPAN><SPAN style="COLOR: windowtext; FONT-FAMILY: 宋体; mso-ascii-font-family: ''''Times New Roman''''; mso-hansi-font-family: ''''Times New Roman''''">和</SPAN><SPAN lang=EN-US style="COLOR: windowtext">mbCancel</SPAN><SPAN style="COLOR: windowtext; FONT-FAMILY: 宋体; mso-ascii-font-family: ''''Times New Roman''''; mso-hansi-font-family: ''''Times New Roman''''">元素；</SPAN><SPAN lang=EN-US style="COLOR: windowtext"><o:p></o:p></SPAN></FONT></P><P class=MsoBodyTextIndent style="MARGIN: 0cm 0cm 0pt; TEXT-INDENT: 21pt; mso-char-indent-count: 2.0; mso-char-indent-size: 10.5pt"><FONT size=3><SPAN lang=EN-US style="COLOR: windowtext">mbOKCancel</SPAN><SPAN style="COLOR: windowtext; FONT-FAMILY: 宋体; mso-ascii-font-family: ''''Times New Roman''''; mso-hansi-font-family: ''''Times New Roman''''">：包含了</SPAN><SPAN lang=EN-US style="COLOR: windowtext">mbOK</SPAN><SPAN style="COLOR: windowtext; FONT-FAMILY: 宋体; mso-ascii-font-family: ''''Times New Roman''''; mso-hansi-font-family: ''''Times New Roman''''">和</SPAN><SPAN lang=EN-US style="COLOR: windowtext">mbCancel</SPAN><SPAN style="COLOR: windowtext; FONT-FAMILY: 宋体; mso-ascii-font-family: ''''Times New Roman''''; mso-hansi-font-family: ''''Times New Roman''''">元素；</SPAN><SPAN lang=EN-US style="COLOR: windowtext"><o:p></o:p></SPAN></FONT></P><P class=MsoBodyTextIndent style="MARGIN: 0cm 0cm 0pt; TEXT-INDENT: 21pt; mso-char-indent-count: 2.0; mso-char-indent-size: 10.5pt"><FONT size=3><SPAN lang=EN-US style="COLOR: windowtext">mbAbortRetryIgnore</SPAN><SPAN style="COLOR: windowtext; FONT-FAMILY: 宋体; mso-ascii-font-family: ''''Times New Roman''''; mso-hansi-font-family: ''''Times New Roman''''">：包含了</SPAN><SPAN lang=EN-US style="COLOR: windowtext">mbAbort</SPAN><SPAN style="COLOR: windowtext; FONT-FAMILY: 宋体; mso-ascii-font-family: ''''Times New Roman''''; mso-hansi-font-family: ''''Times New Roman''''">、</SPAN><SPAN lang=EN-US style="COLOR: windowtext">mbRetry</SPAN><SPAN style="COLOR: windowtext; FONT-FAMILY: 宋体; mso-ascii-font-family: ''''Times New Roman''''; mso-hansi-font-family: ''''Times New Roman''''">和</SPAN><SPAN lang=EN-US style="COLOR: windowtext">mbIgnore</SPAN><SPAN style="COLOR: windowtext; FONT-FAMILY: 宋体; mso-ascii-font-family: ''''Times New Roman''''; mso-hansi-font-family: ''''Times New Roman''''">元素。</SPAN><SPAN lang=EN-US style="COLOR: windowtext"><o:p></o:p></SPAN></FONT></P><P class=MsoBodyTextIndent style="MARGIN: 0cm 0cm 0pt; TEXT-INDENT: 21pt; mso-char-indent-count: 2.0; mso-char-indent-size: 10.5pt"><FONT size=3><SPAN style="COLOR: windowtext; FONT-FAMILY: 宋体; mso-ascii-font-family: ''''Times New Roman''''; mso-hansi-font-family: ''''Times New Roman''''">参数</SPAN><SPAN lang=EN-US style="COLOR: windowtext">HelpCtx</SPAN><SPAN style="COLOR: windowtext; FONT-FAMILY: 宋体; mso-ascii-font-family: ''''Times New Roman''''; mso-hansi-font-family: ''''Times New Roman''''">用来指定当用户选择帮助时，<font id="mhumqeordfcsij">aL1YJr育&Iz教h提C</font>帮助系统中的上下文编号。这个函数根据⌨️ 快捷键说明
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