ColorDialog.ShowHelp 属性

定义

命名空间:

System.Windows.Forms

程序集:

System.Windows.Forms.dll

获取或设置一个值，该值指示在颜色对话框中是否显示“帮助”按钮。

public:
 virtual property bool ShowHelp { bool get(); void set(bool value); };

public virtual bool ShowHelp { get; set; }

member this.ShowHelp : bool with get, set

Public Overridable Property ShowHelp As Boolean

属性值

Boolean

如果在对话框中显示“帮助”按钮，则为 true；否则为 false。 默认值是 false。

示例

下面的代码示例演示了如何创建新的 ColorDialog。 此示例要求从具有 TextBox 并 Button 放置在它的现有窗体中调用 方法。

private:
   void button1_Click( Object^ /*sender*/, System::EventArgs^ /*e*/ )
   {
      ColorDialog^ MyDialog = gcnew ColorDialog;
      // Keeps the user from selecting a custom color.
      MyDialog->AllowFullOpen = false;
      // Allows the user to get help. (The default is false.)
      MyDialog->ShowHelp = true;
      // Sets the initial color select to the current text color.
      MyDialog->Color = textBox1->ForeColor;
      
      // Update the text box color if the user clicks OK 
      if ( MyDialog->ShowDialog() == ::System::Windows::Forms::DialogResult::OK )
      {
         textBox1->ForeColor = MyDialog->Color;
      }
   }

private void button1_Click(object sender, System.EventArgs e)
 {
    ColorDialog MyDialog = new ColorDialog();
    // Keeps the user from selecting a custom color.
    MyDialog.AllowFullOpen = false ;
    // Allows the user to get help. (The default is false.)
    MyDialog.ShowHelp = true ;
    // Sets the initial color select to the current text color.
    MyDialog.Color = textBox1.ForeColor ;
    
    // Update the text box color if the user clicks OK 
    if (MyDialog.ShowDialog() == DialogResult.OK)
        textBox1.ForeColor =  MyDialog.Color;
 }

Private Sub Button1_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Button1.Click
    Dim MyDialog As New ColorDialog()
    ' Keeps the user from selecting a custom color.
    MyDialog.AllowFullOpen = False
    ' Allows the user to get help. (The default is false.)
    MyDialog.ShowHelp = True
    ' Sets the initial color select to the current text color,
    MyDialog.Color = TextBox1.ForeColor

    ' Update the text box color if the user clicks OK 
    If (MyDialog.ShowDialog() = Windows.Forms.DialogResult.OK) Then
        TextBox1.ForeColor = MyDialog.Color
    End If
End Sub