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Shape.LostFocus Event

  • مقالة

Occurs when the shape loses focus.

Namespace:  Microsoft.VisualBasic.PowerPacks
Assembly:  Microsoft.VisualBasic.PowerPacks.Vs (in Microsoft.VisualBasic.PowerPacks.Vs.dll)

Syntax

'إقرار
<BrowsableAttribute(True)> _
Public Event LostFocus As EventHandler
'الاستخدام
Dim instance As Shape
Dim handler As EventHandler

AddHandler instance.LostFocus, handler

[BrowsableAttribute(true)]
public event EventHandler LostFocus

[BrowsableAttribute(true)]
public:
 event EventHandler^ LostFocus {
    void add (EventHandler^ value);
    void remove (EventHandler^ value);
}

[<BrowsableAttribute(true)>]
member LostFocus : IEvent<EventHandler,
    EventArgs>

JScript does not support events.

Remarks

When you change the focus by using the keyboard (TAB, SHIFT+TAB, and so on), or by calling the Select or SelectNextControl(Shape, Boolean, Boolean, Boolean, Boolean) method, focus events occur in the following order:

Enter

GotFocus

Leave

LostFocus

When you change the focus by using the mouse or by calling the Focus method, focus events occur in the following order:

Enter

GotFocus

LostFocus

Leave

For more information about how to handle events, see Consuming Events.

ملاحظة

Do not try to set focus in the LostFocus event handler. Doing so can cause your application or the operating system to stop responding.

Examples

The following example shows how to respond to the LostFocus event in an event handler. This example requires that you have a RectangleShape control named RectangleShape1 on a form.

Private Sub RectangleShape1_LostFocus() Handles RectangleShape1.LostFocus
    ' Restore the default BorderColor.
    RectangleShape1.BorderColor = 
      PowerPacks.SimpleShape.DefaultBorderColor
End Sub

        private void rectangleShape1_LostFocus(object sender, System.EventArgs e)
        {
            // Restore the default BorderColor.
            rectangleShape1.BorderColor = SimpleShape.DefaultBorderColor;
        }

.NET Framework Security

See Also

Reference

Shape Class

Shape Members

Microsoft.VisualBasic.PowerPacks Namespace

Other Resources

How to: Draw Lines with the LineShape Control (Visual Studio)

How to: Draw Shapes with the OvalShape and RectangleShape Controls (Visual Studio)

Introduction to the Line and Shape Controls (Visual Studio)