Control.Layout Event (System.Windows.Forms)

Layout Event

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This page is specific to

Microsoft Visual Studio 2010/.NET Framework 4

Other versions are also available for the following:

.NET Framework Class Library

Control..::.Layout Event

Occurs when a control should reposition its child controls.

Namespace: System.Windows.Forms
Assembly: System.Windows.Forms (in System.Windows.Forms.dll)

Syntax

Visual Basic

Public Event Layout As LayoutEventHandler

public event LayoutEventHandler Layout

Visual C++

public:
 event LayoutEventHandler^ Layout {
    void add (LayoutEventHandler^ value);
    void remove (LayoutEventHandler^ value);
}

member Layout : IEvent<LayoutEventHandler,
    LayoutEventArgs>

Remarks

The Layout event occurs when child controls are added or removed, when the bounds of the control changes, and when other changes occur that can affect the layout of the control. The layout event can be suppressed using the SuspendLayout and ResumeLayout methods. Suspending layout enables you to perform multiple actions on a control without having to perform a layout for each change. For example, if you resize and move a control, each operation would raise a Layout event.

For more information about handling events, see Consuming Events.

Examples

The following code example centers a Form on the screen in the Layout event. This will keep the form centered as the user resizes it. This example requires that you have created a Form control.

Visual Basic


Private Sub MyForm_Layout(ByVal sender As Object, _
    ByVal e As System.Windows.Forms.LayoutEventArgs) Handles MyBase.Layout

    ' Center the Form on the user's screen everytime it requires a Layout.
    Me.SetBounds((System.Windows.Forms.Screen.GetBounds(Me).Width / 2) - (Me.Width / 2), _
        (System.Windows.Forms.Screen.GetBounds(Me).Height / 2) - (Me.Height / 2), _
        Me.Width, Me.Height, System.Windows.Forms.BoundsSpecified.Location)
End Sub

   private void MyForm_Layout(object sender, System.Windows.Forms.LayoutEventArgs e)
   {
      // Center the Form on the user's screen everytime it requires a Layout.
      this.SetBounds((Screen.GetBounds(this).Width/2) - (this.Width/2),
          (Screen.GetBounds(this).Height/2) - (this.Height/2),
          this.Width, this.Height, BoundsSpecified.Location);    
   }

Visual C++

private:
   void MyForm_Layout( Object^ /*sender*/, System::Windows::Forms::LayoutEventArgs^ /*e*/ )
   {
      // Center the Form on the user's screen everytime it requires a Layout.
      this->SetBounds( (Screen::GetBounds( this ).Width / 2) - (this->Width / 2), (Screen::GetBounds( this ).Height / 2) - (this->Height / 2), this->Width, this->Height, BoundsSpecified::Location );
   }

Version Information

.NET Framework

Supported in: 4, 3.5, 3.0, 2.0, 1.1, 1.0

.NET Framework Client Profile

Supported in: 4, 3.5 SP1

Platforms

Windows 7, Windows Vista SP1 or later, Windows XP SP3, Windows XP SP2 x64 Edition, Windows Server 2008 (Server Core not supported), Windows Server 2008 R2 (Server Core supported with SP1 or later), Windows Server 2003 SP2

The .NET Framework does not support all versions of every platform. For a list of the supported versions, see .NET Framework System Requirements.

Reference

Control Class

System.Windows.Forms Namespace

Layout