Control.MouseDoubleClick 事件

定義

發生於以滑鼠按兩下控制項時。Occurs when the control is double clicked by the mouse.

public:
 event System::Windows::Forms::MouseEventHandler ^ MouseDoubleClick;
public event System.Windows.Forms.MouseEventHandler MouseDoubleClick;
member this.MouseDoubleClick : System.Windows.Forms.MouseEventHandler 
Public Custom Event MouseDoubleClick As MouseEventHandler 

範例

下列程式碼範例示範如何使用這個成員。The following code example demonstrates the use of this member. 在此範例中,事件處理常式會報告 MouseDoubleClick 事件的發生次數。In the example, an event handler reports on the occurrence of the MouseDoubleClick event. 此報表可協助您瞭解事件發生的時間,並可協助您進行調試。This report helps you to learn when the event occurs and can assist you in debugging. 若要報告多個事件或經常發生的事件,請考慮以 Console.WriteLine 取代 MessageBox.Show,或將訊息附加到多行 TextBoxTo report on multiple events or on events that occur frequently, consider replacing MessageBox.Show with Console.WriteLine or appending the message to a multiline TextBox.

若要執行範例程式碼,請將它貼到專案中,其中包含繼承自 Control 的類型實例,例如 ButtonComboBoxTo run the example code, paste it into a project that contains an instance of a type that inherits from Control, such as a Button or ComboBox. 然後將實例命名為 Control1,並確定事件處理常式與 MouseDoubleClick 事件相關聯。Then name the instance Control1 and ensure that the event handler is associated with the MouseDoubleClick event.

private void Control1_MouseDoubleClick(Object sender, MouseEventArgs e) {

System.Text.StringBuilder messageBoxCS = new System.Text.StringBuilder();
messageBoxCS.AppendFormat("{0} = {1}", "Button", e.Button );
messageBoxCS.AppendLine();
messageBoxCS.AppendFormat("{0} = {1}", "Clicks", e.Clicks );
messageBoxCS.AppendLine();
messageBoxCS.AppendFormat("{0} = {1}", "X", e.X );
messageBoxCS.AppendLine();
messageBoxCS.AppendFormat("{0} = {1}", "Y", e.Y );
messageBoxCS.AppendLine();
messageBoxCS.AppendFormat("{0} = {1}", "Delta", e.Delta );
messageBoxCS.AppendLine();
messageBoxCS.AppendFormat("{0} = {1}", "Location", e.Location );
messageBoxCS.AppendLine();
MessageBox.Show(messageBoxCS.ToString(), "MouseDoubleClick Event" );
}
Private Sub Control1_MouseDoubleClick(sender as Object, e as MouseEventArgs) _ 
     Handles Control1.MouseDoubleClick

    Dim messageBoxVB as New System.Text.StringBuilder()
    messageBoxVB.AppendFormat("{0} = {1}", "Button", e.Button)
    messageBoxVB.AppendLine()
    messageBoxVB.AppendFormat("{0} = {1}", "Clicks", e.Clicks)
    messageBoxVB.AppendLine()
    messageBoxVB.AppendFormat("{0} = {1}", "X", e.X)
    messageBoxVB.AppendLine()
    messageBoxVB.AppendFormat("{0} = {1}", "Y", e.Y)
    messageBoxVB.AppendLine()
    messageBoxVB.AppendFormat("{0} = {1}", "Delta", e.Delta)
    messageBoxVB.AppendLine()
    messageBoxVB.AppendFormat("{0} = {1}", "Location", e.Location)
    messageBoxVB.AppendLine()
    MessageBox.Show(messageBoxVB.ToString(),"MouseDoubleClick Event")

End Sub

備註

當游標停留在控制項上時,當使用者快速地連續 depresses 滑鼠按鍵兩次時,就會發生 MouseDoubleClick 事件。The MouseDoubleClick event occurs when the user depresses a mouse button twice in quick succession when the cursor is over the control. 用來分隔兩次按兩下的時間間隔,是由使用者作業系統的滑鼠設定所決定。The time interval that separates two single clicks from a double-click is determined by the mouse settings of the user's operating system.

當這類使用者動作發生時,控制項就會引發下列一連串的事件:The following series of events is raised by the control when such a user action takes place:

  1. MouseDown 事件。MouseDown event.

  2. Click 事件。Click event.

  3. MouseClick 事件。MouseClick event.

  4. MouseUp 事件。MouseUp event.

  5. MouseDown 事件。MouseDown event.

  6. DoubleClick 事件。DoubleClick event.

  7. MouseDoubleClick 事件。MouseDoubleClick event.

  8. MouseUp 事件。MouseUp event.

若要進行這項工作,則無法在控制項的類別中停用各種事件。For this to occur, the various events cannot be disabled in the control's class.

重要

DoubleClick 事件在邏輯上是控制項的較高層級事件。DoubleClick events are logically higher-level events of a control. 它們可能是由其他使用者動作所引發,例如快速鍵組合。They may be raised by other user actions, such as shortcut key combinations.

如需處理事件的詳細資訊,請參閱處理和引發事件For more information about handling events, see Handling and Raising Events.

適用於

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