📄 c++ builder 程序设计实用教程 - 5_4_1 驱动器类控件 - 张晋 - 17xie.htm
字号:
style="FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">盘</SPAN></P>
<P class=a3><SPAN
lang=EN-US>Form1->DriveComboBox1->TextCase=tcUpperCase;</SPAN></P>
<P class=a3><SPAN lang=EN-US>//</SPAN><SPAN
style="FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">设置显示的字母为大写字母</SPAN></P>
<P class=a3><SPAN lang=EN-US><o:p> </o:p></SPAN></P>
<P class=a3><SPAN lang=EN-US>}</SPAN></P>
<P class=a3><SPAN
lang=EN-US>//-----------------------------------------------------------------------</SPAN></P>
<P class=a3><SPAN lang=EN-US><o:p> </o:p></SPAN></P>
<P class=a3><SPAN lang=EN-US>void __fastcall TForm1::DriveComboBox1Click(TObject
*Sender)</SPAN></P>
<P class=a3><SPAN lang=EN-US>{</SPAN></P>
<P class=a3><SPAN lang=EN-US>String str1;</SPAN></P>
<P class=a3><SPAN lang=EN-US>//</SPAN><SPAN
style="FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">定义字符串变量</SPAN></P>
<P class=a3><SPAN lang=EN-US>str1="</SPAN><SPAN
style="FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">您选择的是</SPAN><SPAN
lang=EN-US>";</SPAN></P>
<P class=a3><SPAN
lang=EN-US>str1=str1+Form1->DriveComboBox1->Drive;</SPAN></P>
<P class=a3><SPAN lang=EN-US>str1=str1+"</SPAN><SPAN
style="FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">盘</SPAN><SPAN
lang=EN-US>";</SPAN></P>
<P class=a3><SPAN lang=EN-US>//</SPAN><SPAN
style="FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">设置显示信息</SPAN></P>
<P class=a3><SPAN lang=EN-US>ShowMessage(str1);</SPAN></P>
<P class=a3><SPAN lang=EN-US>//</SPAN><SPAN
style="FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">显示用户选择</SPAN></P>
<P class=a3><SPAN lang=EN-US>}</SPAN></P>
<P class=a3><SPAN
lang=EN-US>//-----------------------------------------------------------------------</SPAN></P>
<P class=MsoNormalIndent><SPAN
style="FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">程序说明：</SPAN></P>
<P class=MsoNormalIndent><SPAN lang=EN-US>DriveComboBox</SPAN><SPAN
style="FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">控件的</SPAN><SPAN
lang=EN-US>Drive</SPAN><SPAN
style="FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">用于设置控件显示的驱动器的盘符，所以语句</SPAN><SPAN
lang=EN-US>Form1->DriveComboBox1->Drive='d'</SPAN><SPAN
style="FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">；的作用是设置控件显示的驱动器为</SPAN><SPAN
lang=EN-US>D</SPAN><SPAN
style="FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">盘；而</SPAN><SPAN
lang=EN-US>TextCase</SPAN><SPAN
style="FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">属性用于设置</SPAN><SPAN
lang=EN-US>DriveComboBox</SPAN><SPAN
style="FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">控件中的字符显示形式，所以语句</SPAN><SPAN
lang=EN-US>Form1->DriveComboBox1 ->TextCase=tcUpperCase</SPAN><SPAN
style="FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">；的作用是设置控件显示的字符为大写字符。</SPAN></P>
<P class=MsoNormalIndent><SPAN
style="FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">在以上的程序段中，我们通过语句</SPAN><SPAN
lang=EN-US>Form1->DriveComboBox1->TextCase=tcUpperCase;</SPAN><SPAN
style="FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">来设置</SPAN><SPAN
lang=EN-US>DriveComboBox</SPAN><SPAN
style="FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">控件中显示的字符为大写字符，那么可不可以通过程序来设置</SPAN><SPAN
lang=EN-US>DriveComboBox</SPAN><SPAN
style="FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">控件中显示为小写字符呢？</SPAN></P>
<P class=MsoNormalIndent><SPAN
style="FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">与设置显示字符为大写字符一样，设置</SPAN><SPAN
lang=EN-US>DriveComboBox</SPAN><SPAN
style="FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">控件中显示为小写字符的语句为：</SPAN></P>
<P class=a3><SPAN lang=EN-US>Form1->DriveComboBox1->TextCase=tcLowerCase;
</SPAN></P>
<P class=a3><SPAN lang=EN-US>//</SPAN><SPAN
style="FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">设置控件显示字符为小写字符</SPAN></P>
<H4><SPAN lang=EN-US>3</SPAN><SPAN
style="FONT-FAMILY: 楷体_GB2312; mso-ascii-font-family: 'Times New Roman'">．运行程序</SPAN></H4>
<P class=MsoNormalIndent><SPAN
style="FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">做完以上的工作后，存储文件，按键盘上的功能键</SPAN><SPAN
lang=EN-US>F9</SPAN><SPAN
style="FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">运行程序，程序的运行结果如图</SPAN><SPAN
lang=EN-US>5-11</SPAN><SPAN
style="FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">所示。</SPAN></P>
<P class=a0><SPAN lang=EN-US><IMG height=218
src="C++ Builder 程序设计实用教程 - 5_4_1 驱动器类控件 - 张晋 - 17xie.files/19ef800753.jpg"
width=277 v:shapes="_x0000_i1026"></SPAN></P>
<P class=MsoCaption><SPAN
style="FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">图</SPAN><SPAN
lang=EN-US>5-11<SPAN style="mso-spacerun: yes"> </SPAN></SPAN><SPAN
style="FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">程序运行结果</SPAN></P>
<P class=MsoNormal><SPAN
lang=EN-US><o:p> </o:p></SPAN></P></DIV></DIV></CENTER>
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