MouseEventArgs.Button 属性


获取曾按下的是哪个鼠标按钮。Gets which mouse button was pressed.

 property System::Windows::Forms::MouseButtons Button { System::Windows::Forms::MouseButtons get(); };
public System.Windows.Forms.MouseButtons Button { get; }
member this.Button : System.Windows.Forms.MouseButtons
Public ReadOnly Property Button As MouseButtons


MouseButtons 值之一。One of the MouseButtons values.


下面的代码示例对MouseDown TextBox控件处理事件, 以便单击鼠标右键以选择控件中的所有文本。The following code example handles the MouseDown event on a TextBox control so that clicking the right mouse button selects all the text in the control. 此示例要求您具有一个包含TextBox名为textBox1的控件的窗体。This example requires that you have a form that contains a TextBox control named textBox1.

private void Form1_Load(object sender, EventArgs e)
    // This line suppresses the default context menu for the TextBox control. 
    textBox1.ContextMenu = new ContextMenu();
    textBox1.MouseDown += new MouseEventHandler(textBox1_MouseDown);

void textBox1_MouseDown(object sender, System.Windows.Forms.MouseEventArgs e)
    if (e.Button == MouseButtons.Right)
        textBox1.Select(0, textBox1.Text.Length);
Private Sub Form1_Load(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles MyBase.Load
    TextBox1.ContextMenu = New ContextMenu()
End Sub

Private Sub TextBox1_MouseDown(ByVal sender As Object, ByVal e As System.Windows.Forms.MouseEventArgs) Handles TextBox1.MouseDown
    If (e.Button = Windows.Forms.MouseButtons.Right) Then
        TextBox1.Select(0, TextBox1.Text.Length)
    End If
End Sub