全面掌握C＃中的对话框

haidong · 发表于 2010-2-25 10:23:03

在编程中经常使用到的对话框大致有六个，他们分别是："选择文件对话框"、"保存文件对话框"、"颜色对话框"、"打印预览对话框"、"打印机选择对话框"和"字体选择对话框"。那么在C＃是否也有相应的对话框？答案是存在的。那么在C＃中如何使用？本文就来探讨一下这个问题。<ccid_nobr>一．本文介绍的程序设计和运行的软件环境：</ccid_nobr>（1）.微软公司视窗2000服务器版（2）..Net FrameWork SDK Beta 2<ccid_nobr>二．选择文件对话框：</ccid_nobr>在命名空间System.Windows.Froms中封装了一个类（Class）"OpenFileDialog"，在C＃中的选择文件对话框就是继承这个类。下列代码是创建一个此类的对象： OpenFileDialog openFileDialog1 = new OpenFileDialog ( ) ;（1）.选择文件对话框一些常用的属性：选择文件对话框的常用属性如下表：<ccid_nobr><table border="1" cellpadding="0" cellspacing="0" bordercolor="#111111" width="550" ><tr><td>属性名称</td><td>作用</td></tr><tr><td>InitialDirectory</td><td>设置在对话框中显示的初始化目录</td></tr><tr><td>Filter</td><td>设定对话框中过滤文件字符串</td></tr><tr><td>FilterIndex</td><td>设定显示的过滤字符串的索引</td></tr><tr><td>RestoreDirectory</td><td>布尔型，设定是否重新回到关闭此对话框时候的当前目录</td></tr><tr><td>FileName</td><td>设定在对话框中选择的文件名称</td></tr><tr><td>ShowHelp</td><td>设定在对话框中是否显示"帮助"按钮</td></tr><tr><td>Title</td><td>设定对话框的标题</td></tr></table></ccid_nobr>（2）.创建一个功能相对完整的选择文件对话框的对象：<ccid_nobr><table width="550" border="1" cellspacing="0" cellpadding="0" bordercolorlight = "black" bordercolordark = "#FFFFFF" align="center"><tr><td bgcolor="e6e6e6" class="code"> //定义一个"打开文件对话框" OpenFileDialog openFileDialog1 = new OpenFileDialog ( ) ; //定义此对话框的初始化目录 openFileDialog1.InitialDirectory = "c:\\" ; //定义此对话框文件过滤类型 openFileDialog1.Filter= "txt files(*.txt)|*.txt|All files (*.*)|*.*" ; //此对话框缺省过滤类型为第二个 openFileDialog1.FilterIndex = 2 ; openFileDialog1.RestoreDirectory = true ; if ( openFileDialog1.ShowDialog ( ) == DialogResult.OK ) { fName = openFileDialog1.FileName ; showInfo ( ) ; sr = new StreamReader ( fName ) ; } </td></tr></table></ccid_nobr>此代码编译后的运行的界面如下：<ccid_nobr><center><img src="http://www.hh010.com/upload_files/article/244/9_iav2h012503.gif"></center></ccid_nobr><ccid_nobr><center>图01：C＃创建一个选择文件对话框对象</center></ccid_nobr><ccid_nobr>三．选择字体对话框：</ccid_nobr>在命名空间System.Windows.Froms中封装了一个类（Class）"FontDialog"，在C＃中的通过继承此类得到字体对话框的。下列代码是创建一个此类的对象： FontDialog fontDialog1 = new FontDialog ( ) ;（1）.字体对话框的一些常用的属性：<ccid_nobr><table border="1" cellpadding="0" cellspacing="0" bordercolor="#111111" width="550" ><tr><td>属性名称</td><td>作用</td></tr><tr><td>ShowColor</td><td>是否在对话框中显示"颜色"选项</td></tr><tr><td>AllowScriptChange</td><td>是否允许使用者更改"字符集"选择</td></tr><tr><td>Font</td><td>选择后的字体</td></tr></table></ccid_nobr>（2）.创建一个功能相对完整的字体对话框的对象：<ccid_nobr><table width="550" border="1" cellspacing="0" cellpadding="0" bordercolorlight = "black" bordercolordark = "#FFFFFF" align="center"><tr><td bgcolor="e6e6e6" class="code"> FontDialog fontDialog1 = new FontDialog ( ) ; fontDialog1.ShowColor = true ; fontDialog1.AllowScriptChange = false ; if ( fontDialog1.ShowDialog ( ) != DialogResult.Cancel ) { fnt = fontDialog1.Font ; showInfo ( ) ; } </td></tr></table></ccid_nobr>编译后的运行界面如下：<ccid_nobr><center><img src="http://www.hh010.com/upload_files/article/244/9_yq9w4z12504.gif"></center></ccid_nobr><ccid_nobr><center>图02：C＃创建一个字体对话框对象</center></ccid_nobr><ccid_nobr>四．颜色选择对话框：</ccid_nobr>在C＃中创建一个颜色对话框是通过继承命名空间System.Windows.Froms中类（Class）"ColorDialog"来实现的。下列代码是创建一个此类的对象：<ccid_nobr><table width="550" border="1" cellspacing="0" cellpadding="0" bordercolorlight = "black" bordercolordark = "#FFFFFF" align="center"><tr><td bgcolor="e6e6e6" class="code"> ColorDialog ColorDialog1 = new ColorDialog ( ) ; </td></tr></table></ccid_nobr>（1）. 颜色选择对话框一些常用的属性：颜色选择对话框的常用属性如下表：<ccid_nobr><table border="1" cellpadding="0" cellspacing="0" bordercolor="#111111" width="550" ><tr><td>属性名称</td><td>作用</td></tr><tr><td>AllowFullOpen</td><td>设定用户是否可以使用自定义颜色</td></tr><tr><td>ShowHelp</td><td>设定在对话框中是否显示"帮助"按钮</td></tr><tr><td>Color</td><td>颜色对话框选择的颜色</td></tr></table></ccid_nobr>（2）.创建一个功能相对完整的颜色选择对话框的对象：<ccid_nobr><table width="550" border="1" cellspacing="0" cellpadding="0" bordercolorlight = "black" bordercolordark = "#FFFFFF" align="center"><tr><td bgcolor="e6e6e6" class="code"> ColorDialog ColorDialog1 = new ColorDialog ( ) ; ColorDialog1.AllowFullOpen = true ; ColorDialog1.FullOpen = true ; //设定此颜色对话框存在"帮助"按钮，缺省是没有的 ColorDialog1.ShowHelp = true ; // 设定此颜色对话框的初始颜色，所以如果在对话框中选择"取消"，则此对话框会重新此颜色 ColorDialog1.Color = Color.DarkBlue ; if ( ColorDialog1.ShowDialog ( ) != DialogResult.Cancel ) { clr = ColorDialog1.Color ; showInfo ( ) ; } </td></tr></table></ccid_nobr>此代码编译后的运行的界面如下：<ccid_nobr><center><img src="http://www.hh010.com/upload_files/article/244/9_enayql12505.gif"></center></ccid_nobr><ccid_nobr><center>图03：C＃创建一个颜色对话框对象</center></ccid_nobr><ccid_nobr>五．保存文件对话框：</ccid_nobr>在C＃中创建一个保存文件对话框是通过继承命名空间System.Windows.Froms中类（Class）"SaveFileDialog"来实现的。下列代码是创建一个此类的对象：<ccid_nobr><table width="550" border="1" cellspacing="0" cellpadding="0" bordercolorlight = "black" bordercolordark = "#FFFFFF" align="center"><tr><td bgcolor="e6e6e6" class="code"> SaveFileDialog saveFileDialog1 = new SaveFileDialog ( ) ; </td></tr></table></ccid_nobr>（1）. 保存文件对话框一些常用的属性：保存文件对话框的常用属性如下表：<ccid_nobr><table border="1" cellpadding="0" cellspacing="0" bordercolor="#111111" width="550" ><tr><td>属性名称</td><td>作用</td></tr><tr><td>InitialDirectory</td><td>设置在对话框中显示的初始化目录</td></tr><tr><td>Filter</td><td>设定对话框中过滤文件字符串</td></tr><tr><td>FilterIndex</td><td>设定显示的过滤字符串的索引</td></tr><tr><td>RestoreDirectory</td><td>布尔型，设定是否重新回到关闭此对话框时候的当前目录</td></tr><tr><td>FileName</td><td>设定在对话框中选择的文件名称</td></tr><tr><td>ShowHelp</td><td>设定在对话框中是否显示"帮助"按钮</td></tr><tr><td>Title</td><td>设定对话框的标题</td></tr></table></ccid_nobr>（2）.创建一个功能相对完整的保存文件对话框的对象：<ccid_nobr><table width="550" border="1" cellspacing="0" cellpadding="0" bordercolorlight = "black" bordercolordark = "#FFFFFF" align="center"><tr><td bgcolor="e6e6e6" class="code"> Stream myStream ; SaveFileDialog saveFileDialog1 = new SaveFileDialog ( ) ; saveFileDialog1.Filter= " txt files(*.txt)|*.txt|All files(*.*)|*.*" ; saveFileDialog1.FilterIndex = 2 ; saveFileDialog1.RestoreDirectory = true ; if ( saveFileDialog1.ShowDialog ( ) == DialogResult.OK ) { if ( ( myStream = saveFileDialog1.OpenFile ( ) ) != null ) { //设定"sr"对象的指针指向读取文件流的开始位置 sr.BaseStream.Seek ( 0 , SeekOrigin.Begin ) ; int i ; //判断"sr"中的指针是否指向文件流的结尾位置 while ( ( i = sr.BaseStream.ReadByte ( ) ) != -1 ) { //不断的往文件中写入字节 myStream.WriteByte ( ( byte ) i ) ; } myStream.Close ( ) ; sr.BaseStream.Seek ( 0 , SeekOrigin.Begin ) ; } } </td></tr></table></ccid_nobr>此代码编译后的运行的界面如下：<ccid_nobr><center><img src="http://www.hh010.com/upload_files/article/244/9_zcsdts12506.gif"></center></ccid_nobr><ccid_nobr><center>图04：C＃创建一个保存文件对话框对象</center></ccid_nobr><ccid_nobr>六．设置打印机对话框：</ccid_nobr>在C＃中创建一个设置打印机对话框是通过继承命名空间System.Windows.Froms中类（Class）"

rintDialog"来实现的。下列代码是创建一个此类的对象：<ccid_nobr><table width="550" border="1" cellspacing="0" cellpadding="0" bordercolorlight = "black" bordercolordark = "#FFFFFF" align="center"><tr><td bgcolor="e6e6e6" class="code"> PrintDialog PrintDialog1 = new PrintDialog ( ) ; </td></tr></table></ccid_nobr>（1）. 设置打印机对话框一些常用的属性：设置打印机对话框的常用属性如下表：<ccid_nobr><table border="1" cellpadding="0" cellspacing="0" bordercolor="#111111" width="550" ><tr><td>属性名称</td><td>作用</td></tr><tr><td>AllowSelection</td><td>设定是否显示"从…到…页"这个打印选项</td></tr><tr><td>AllowPrintToFile</td><td>设定在对话框中"打印到文件"选项是否激活</td></tr><tr><td>Document</td><td>设定要打印的文档</td></tr><tr><td>

rintToFile</td><td>设定是否选中"打印到文件"选项</td></tr><tr><td>ShowNetwork</td><td>设定在对话框是否显示"网络"这个按钮</td></tr><tr><td>ShowHelp</td><td>设定在对话框中是否显示"帮助"按钮</td></tr></table></ccid_nobr>（2）.创建一个功能相对完整的设置打印机对话框的对象：<ccid_nobr><table width="550" border="1" cellspacing="0" cellpadding="0" bordercolorlight = "black" bordercolordark = "#FFFFFF" align="center"><tr><td bgcolor="e6e6e6" class="code"> //创建一个设置打印机对话框对象 PrintDialog PrintDialog1 = new PrintDialog ( ) ; //首先要新建一个打印文档， pd = new PrintDocument ( ) ; PrintDialog1.ShowNetwork=false; PrintDialog1.PrintToFile = false ; PrintDialog1.Document = pd ; if ( PrintDialog1.ShowDialog ( ) != DialogResult.Cancel ) { try { pd.Print ( ) ; } catch ( Exception ex ) { MessageBox.Show ( ex.Message ) ; } } </td></tr></table></ccid_nobr>此代码编译后的运行的界面如下：<ccid_nobr><center><img src="http://www.hh010.com/upload_files/article/244/9_hyj83c12507.gif"></center></ccid_nobr><ccid_nobr><center>图05：C＃创建一个设置打印机对话框对象</center></ccid_nobr><ccid_nobr>七：打印预览对话框：</ccid_nobr>在C＃中创建一个打印预览对话框是通过继承命名空间System.Windows.Froms中类（Class）"

rintPreviewDialog"来实现的。下列代码是创建一个此类的对象：<ccid_nobr><table width="550" border="1" cellspacing="0" cellpadding="0" bordercolorlight = "black" bordercolordark = "#FFFFFF" align="center"><tr><td bgcolor="e6e6e6" class="code"> PrintPreviewDialog printPreviewDialog1 = new PrintPreviewDialog ( ) ; </td></tr></table></ccid_nobr>（1）. 打印预览对话框一些常用的属性：设置打印机对话框的常用属性如下表：<ccid_nobr><table border="1" cellpadding="0" cellspacing="0" bordercolor="#111111" width="550" ><tr><td>属性名称</td><td>作用</td></tr><tr><td>FormBorderStyle</td><td>设定边距类型</td></tr><tr><td>Document</td><td>设定要打印的文档</td></tr></table></ccid_nobr>（2）.创建一个可以打印一个空文档的打印预览对话框：<ccid_nobr><table width="550" border="1" cellspacing="0" cellpadding="0" bordercolorlight = "black" bordercolordark = "#FFFFFF" align="center"><tr><td bgcolor="e6e6e6" class="code"> //创建一个打印文档 pd = new PrintDocument ( ) ; //创建一个打印预览对话框对象 PrintPreviewDialog printPreviewDialog1 = new PrintPreviewDialog ( ) ; printPreviewDialog1.Document = this.pd ; printPreviewDialog1.FormBorderStyle = FormBorderStyle.Fixed3D ; printPreviewDialog1.ShowDialog ( ) ; </td></tr></table></ccid_nobr>此代码编译后的运行的界面如下：<ccid_nobr><center><img src="http://www.hh010.com/upload_files/article/244/9_8986vx12508.gif"></center></ccid_nobr><ccid_nobr><center>图06：C＃创建一个打印空文档的打印预览对话框对象</center></ccid_nobr><ccid_nobr>八．用C＃例子编写一个综合六个对话框的例子（dialog.cs）：</ccid_nobr>下图是dialog.cs编译后运行的界面：<ccid_nobr><center><img src="http://www.hh010.com/upload_files/article/244/9_nzrq7a12510.gif"></center></ccid_nobr><ccid_nobr><center>图07：用C＃编写的组合六个对话框程序的运行界面</center></ccid_nobr><ccid_nobr><center><img src="http://www.hh010.com/upload_files/article/244/9_nzrq7a12510.gif"></center></ccid_nobr>dialog.cs的源代码如下：<ccid_nobr><table width="550" border="1" cellspacing="0" cellpadding="0" bordercolorlight = "black" bordercolordark = "#FFFFFF" align="center"><tr><td bgcolor="e6e6e6" class="code"> using System ; using System.IO ; using System.Text ; using System.Drawing ; using System.Drawing.Printing ; using System.Collections ; using System.ComponentModel ; using System.Windows.Forms ; using System.Data ; public class Form1 : Form { private Button btnOpenFileDialog ; private Button btnSaveFileDialog ; private Button btnColorDialog ; private Button btnFontDialog ; private Button btnPrintDialog ; private Label lblOutputData ; private Label lblCaption ; private Font fnt ; private Color clr ; private string fName ; private StreamReader sr ; private PrintDocument pd ; private Button btnPrintPreview ; private System.ComponentModel.Container components = null ; public Form1 ( ) { //初始化窗体中的各个组件 InitializeComponent ( ) ; } //清除程序中使用过的资源 protected override void Dispose ( bool disposing ) { if ( disposing ) { if ( components != null ) { components.Dispose ( ) ; } } base.Dispose ( disposing ) ; } private void InitializeComponent ( ) { btnColorDialog = new Button ( ) ; btnFontDialog = new Button ( ) ; lblCaption = new Label ( ) ; btnOpenFileDialog = new Button ( ) ; btnSaveFileDialog = new Button ( ) ; btnPrintPreview = new Button ( ) ; btnPrintDialog = new Button ( ) ; lblOutputData = new Label ( ) ; SuspendLayout ( ) ; btnColorDialog.Location = new Point ( 20 , 102 ) ; btnColorDialog.Name = "btnColorDialog" ; btnColorDialog.Size = new Size ( 140 , 28 ) ; btnColorDialog.TabIndex = 2 ; btnColorDialog.Text = "颜色对话框" ; btnColorDialog.Click += new System.EventHandler ( btnColorDialog_Click ) ; btnFontDialog.Location = new Point ( 20 , 65 ) ; btnFontDialog.Name = "btnFontDialog" ; btnFontDialog.Size = new Size ( 140 , 28 ) ; btnFontDialog.TabIndex = 1 ; btnFontDialog.Text = "字体对话框" ; btnFontDialog.Click += new System.EventHandler ( btnFontDialog_Click ) ; lblCaption.Font = new System.Drawing.Font ("宋体" , 10.5F , System.Drawing.FontStyle.Regular, System.Drawing.GraphicsUnit.Point, ( ( System.Byte ) ( 134 ) ) ) ; lblCaption.Location = new Point ( 184 , 8 ) ; lblCaption.Name = "lblCaption" ; lblCaption.Size = new Size ( 246 , 19 ) ; lblCaption.TabIndex = 2 ; lblCaption.Text = "选择对话框后的输出结果：" ; btnOpenFileDialog.Location = new Point ( 20 , 28 ) ; btnOpenFileDialog.Name = "btnOpenFileDialog" ; btnOpenFileDialog.Size = new Size ( 140 , 28 ) ; btnOpenFileDialog.TabIndex = 0 ; btnOpenFileDialog.Text = "打开文件对话框" ; btnOpenFileDialog.Click += new System.EventHandler ( btnOpenFileDialog_Click ) ; btnSaveFileDialog.Location = new Point ( 20 , 213 ) ; btnSaveFileDialog.Name = "btnSaveFileDialog" ; btnSaveFileDialog.Size = new Size ( 140 , 28 ) ; btnSaveFileDialog.TabIndex = 5 ; btnSaveFileDialog.Text = "保存文件对话框" ; btnSaveFileDialog.Click += new System.EventHandler ( btnSaveFileDialog_Click ) ; btnPrintPreview.Location = new Point ( 20 , 139 ) ; btnPrintPreview.Name = "btnPrintPreview" ; btnPrintPreview.Size = new Size ( 140 , 28 ) ; btnPrintPreview.TabIndex = 3 ; btnPrintPreview.Text = "打印预览对话框" ; btnPrintPreview.Click += new System.EventHandler ( btnPrintPreview_Click ) ; btnPrintDialog.Location = new Point ( 20 , 176 ) ; btnPrintDialog.Name = "btnPrintDialog" ; btnPrintDialog.Size = new Size ( 140 , 28 ) ; btnPrintDialog.TabIndex = 4 ; btnPrintDialog.Text = "打印对话框" ; btnPrintDialog.Click += new System.EventHandler ( btnPrintDialog_Click ) ; lblOutputData.BorderStyle = System.Windows.Forms.BorderStyle.Fixed3D ; lblOutputData.Location = new Point ( 176 , 28 ) ; lblOutputData.Name = "lblOutputData" ; lblOutputData.Size = new Size ( 280 , 213 ) ; lblOutputData.TabIndex = 1 ; this.AutoScaleBaseSize = new Size ( 6 , 14 ) ; this.ClientSize = new Size ( 456 , 264 ) ; this.Controls.Add ( lblCaption ) ; this.Controls.Add ( btnPrintPreview ) ; this.Controls.Add ( lblOutputData ) ; this.Controls.Add ( btnSaveFileDialog ) ; this.Controls.Add ( btnOpenFileDialog ) ; this.Controls.Add ( btnColorDialog ) ; this.Controls.Add ( btnFontDialog ) ; this.Controls.Add ( btnPrintDialog ) ; this.MaximizeBox = false ; this.MinimizeBox = false ; this.Name = "Form1" ; this.Text = "全面掌握C＃中的对话框组件！" ; this.ResumeLayout ( false ) ; } static void Main ( ) { Application.Run ( new Form1 ( ) ) ; } private void btnOpenFileDialog_Click ( object sender , System.EventArgs e ) { //定义一个"打开文件对话框" OpenFileDialog openFileDialog1 = new OpenFileDialog ( ) ; //定义此对话框的初始化目录 openFileDialog1.InitialDirectory = "c:\\" ; //定义此对话框文件过滤类型 openFileDialog1.Filter= "txt files(*.txt)|*.txt|All files (*.*)|*.*" ; //此对话框缺省过滤类型为第二个 openFileDialog1.FilterIndex = 2 ; openFileDialog1.RestoreDirectory = true ; if ( openFileDialog1.ShowDialog ( ) == DialogResult.OK ) { fName = openFileDialog1.FileName ; showInfo ( ) ; sr = new StreamReader ( fName ) ; } } //另存文件对话框 private void btnSaveFileDialog_Click ( object sender , System.EventArgs e ) { Stream myStream ; SaveFileDialog saveFileDialog1 = new SaveFileDialog ( ) ; saveFileDialog1.Filter= " txt files(*.txt)|*.txt|All files(*.*)|*.*" ; saveFileDialog1.FilterIndex = 2 ; saveFileDialog1.RestoreDirectory = true ; if ( saveFileDialog1.ShowDialog ( ) == DialogResult.OK ) { if ( ( myStream = saveFileDialog1.OpenFile ( ) ) != null ) { //设定"sr"对象的指针指向读取文件流的开始位置 sr.BaseStream.Seek ( 0 , SeekOrigin.Begin ) ; int i ; //判断"sr"中的指针是否指向文件流的结尾位置 while ( ( i = sr.BaseStream.ReadByte ( ) ) != -1 ) { //不断的往文件中写入字节 myStream.WriteByte ( ( byte ) i ) ; } myStream.Close ( ) ; sr.BaseStream.Seek ( 0 , SeekOrigin.Begin ) ; } } } //颜色选择对话框 private void btnColorDialog_Click ( object sender , System.EventArgs e ) { ColorDialog ColorDialog1 = new ColorDialog ( ) ; ColorDialog1.AllowFullOpen = true ; ColorDialog1.FullOpen = true ; //设定此颜色对话框存在"帮助"按钮，缺省是没有的 ColorDialog1.ShowHelp = true ; // 设定此颜色对话框的初始颜色，所以如果在对话框中选择"取消"，则此对话框会重新此颜色 ColorDialog1.Color = Color.DarkBlue ; if ( ColorDialog1.ShowDialog ( ) != DialogResult.Cancel ) { clr = ColorDialog1.Color ; showInfo ( ) ; } } //打开字体对话框 private void btnFontDialog_Click ( object sender , System.EventArgs e ) { FontDialog fontDialog1 = new FontDialog ( ) ; fontDialog1.ShowColor = true ; fontDialog1.AllowScriptChange = true ; fontDialog1.ShowColor = false ; if ( fontDialog1.ShowDialog ( ) != DialogResult.Cancel ) { fnt = fontDialog1.Font ; showInfo ( ) ; } } //打印机对话框 private void btnPrintDialog_Click ( object sender , System.EventArgs e ) { PrintDialog PrintDialog1 = new PrintDialog ( ) ; pd = new PrintDocument ( ) ; PrintDialog1.PrintToFile = false ; PrintDialog1.Document = pd ; if ( PrintDialog1.ShowDialog ( ) != DialogResult.Cancel ) { try { pd.Print ( ) ; } catch ( Exception ex ) { MessageBox.Show ( ex.Message ) ; } } } //打印预览对话框 private void btnPrintPreview_Click ( object sender , System.EventArgs e ) { //创建一个新的文档 pd = new PrintDocument ( ) ; //创建一个打印预览对话框 PrintPreviewDialog printPreviewDialog1 = new PrintPreviewDialog ( ) ; printPreviewDialog1.Document = this.pd ; printPreviewDialog1.FormBorderStyle = FormBorderStyle.Fixed3D ; printPreviewDialog1.ShowDialog ( ) ; } //显示各个对话框选择后的信息 private void showInfo ( ) { lblOutputData.Text = "选择文件： " + fName.ToString ( ) + "\n\r\n\r" ; lblOutputData.Text = lblOutputData.Text + "选择颜色： " + clr.ToString ( ) + "\n\r\n\r" ; lblOutputData.Text = lblOutputData.Text + "选择字体：" + fnt + "\n\r\n\r" ; } } </td></tr></table></ccid_nobr>九．总结：对话框是编程过程中经常使用到的组件，希望上面的介绍对您在程序设计中使用这些对话框有所帮助。（责任编辑 <ccid_nobr>赵正北</ccid_nobr>）

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