MouseButtonState 列舉

定義

指定滑鼠按鈕的可能狀態。Specifies the possible states of a mouse button.

public enum class MouseButtonState
public enum MouseButtonState
type MouseButtonState = 
Public Enum MouseButtonState
繼承
MouseButtonState

欄位

Pressed 1

按鈕已按下。The button is pressed.

Released 0

按鈕已放開。The button is released.

範例

下列範例顯示的滑鼠事件處理常式, 會藉由檢查每個滑鼠按鍵的按鈕狀態, 來判斷目前按下的按鈕。The following example shows a mouse event handler that determines which buttons are currently pressed by checking the button state of each mouse button.

private void MouseDownHandler(object sender, MouseEventArgs e)
{
    if (e.RightButton == MouseButtonState.Pressed)
    {
        MessageBox.Show("The Right Mouse Button is pressed");
    }

    if (e.LeftButton == MouseButtonState.Pressed)
    {
        MessageBox.Show("The Left Mouse Button is pressed");
    }

    if (e.MiddleButton == MouseButtonState.Pressed)
    {

        MessageBox.Show("The Middle Mouse Button is pressed");
    }

    if (e.XButton1 == MouseButtonState.Pressed)
    {
        MessageBox.Show("The XButton1 Mouse Button is pressed");
    }

    if (e.XButton2 == MouseButtonState.Pressed)
    {
        MessageBox.Show("The XButton2 Mouse Button is pressed");
    }
}
Private Sub MouseDownHandler(ByVal sender As Object, ByVal e As MouseEventArgs)
    If e.RightButton = MouseButtonState.Pressed Then
        MessageBox.Show("The Right Mouse Button is pressed")
    End If

    If e.LeftButton = MouseButtonState.Pressed Then
        MessageBox.Show("The Left Mouse Button is pressed")
    End If

    If e.MiddleButton = MouseButtonState.Pressed Then

        MessageBox.Show("The Middle Mouse Button is pressed")
    End If

    If e.XButton1 = MouseButtonState.Pressed Then
        MessageBox.Show("The XButton1 Mouse Button is pressed")
    End If

    If e.XButton2 = MouseButtonState.Pressed Then
        MessageBox.Show("The XButton2 Mouse Button is pressed")
    End If
End Sub

備註

MouseButtonState列舉會指定與滑鼠按鍵狀態相互關聯的常數。The MouseButtonState enumeration specifies constants which correlate to the state of a mouse button.

適用於

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