Upraviť

Zdieľať cez

ToolStripItem.MouseDown Event

  • Reference

Definition

Namespace:
System.Windows.Forms
Assembly:
System.Windows.Forms.dll

Occurs when the mouse pointer is over the item and a mouse button is pressed.

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

Event Type

MouseEventHandler

Examples

The following code example demonstrates the use of this member. In the example, an event handler reports on the occurrence of the MouseDown event. This report helps you to learn when the event occurs and can assist you in debugging. To 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.

To run the example code, paste it into a project that contains an instance of a type that inherits from ToolStripItem, such as a ToolStripButton or ToolStripMenuItem. Then name the instance ToolStripItem1 and ensure that the event handler is associated with the MouseDown event.

private void ToolStripItem1_MouseDown(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(), "MouseDown Event" );
}

Private Sub ToolStripItem1_MouseDown(sender as Object, e as MouseEventArgs) _ 
     Handles ToolStripItem1.MouseDown

    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(),"MouseDown Event")

End Sub

Remarks

Mouse events occur in the following order:

  1. MouseEnter

  2. MouseMove

  3. MouseHover or MouseDown

  4. MouseUp

  5. MouseLeave

For more information about handling events, see Handling and Raising Events.

Applies to

See also