WindowsUIView.CustomDrawBackButton Event

Fires whenever the Back button needs to be displayed and allows you to manually draw this button.

Namespace: DevExpress.XtraBars.Docking2010.Views.WindowsUI

Assembly: DevExpress.XtraBars.v18.2.dll

Declaration

C#

public event CustomDrawBackButtonEventHandler CustomDrawBackButton

VB.NET

Public Event CustomDrawBackButton As CustomDrawBackButtonEventHandler

Event Data

The CustomDrawBackButton event's data class is DevExpress.XtraBars.Docking2010.Views.WindowsUI.CustomDrawBackButtonEventArgs.

Remarks

Back buttons are automatically displayed when navigating to child containers within the WindowsUIView (see the Application Hierarchy and Module Navigation topic). By default, the Back button is drawn as a black circle with back arrow within. Handle the CustomDrawBackButton event to re-draw this button.

The code and image below illustrate an example of a manually drawn back button.

C#

void windowsUIView1_CustomDrawBackButton(object sender, CustomDrawBackButtonEventArgs e) {
    Pen myPen = new Pen(SystemColors.InactiveCaptionText, 3);
    Font myFont = e.GraphicsCache.GetFont(new Font("Segoe UI", 9), FontStyle.Bold);
    e.Graphics.DrawRectangle(myPen, e.Bounds);
    e.Graphics.DrawString("Back", myFont, SystemBrushes.InactiveCaptionText, new PointF(25, 59));
    e.DrawGlyph(global::myApplication.Properties.Resources.undo_32x32);
    e.Handled = true;
}

VB.NET

Sub windowsUIView1_CustomDrawBackButton(sender As Object, e As CustomDrawBackButtonEventArgs)
    Dim myPen As New Pen(SystemColors.InactiveCaptionText, 3)
    Dim myFont As Font = e.GraphicsCache.GetFont(New Font("Segoe UI", 9), FontStyle.Bold)
    e.Graphics.DrawRectangle(myPen, e.Bounds)
    e.Graphics.DrawString("Back", myFont, SystemBrushes.InactiveCaptionText, New PointF(25, 59))
    e.DrawGlyph(Global.myApplication.Properties.Resources.undo_32x32)
    e.Handled = True
End Sub

To replace the default Back button image with your own custom image for all the button’s visual states (normal, pressed, hovered), use the following code.

C#

private void windowsUIView1_CustomDrawBackButton(object sender, DevExpress.XtraBars.Docking2010.Views.WindowsUI.CustomDrawBackButtonEventArgs e) {
    if (e.ButtonInfo.State == DevExpress.Utils.Drawing.ObjectState.Normal) {
        e.DrawGlyph(Properties.Resources.backImage_32x32_normal);
        e.Handled = true;
    }
    if (e.ButtonInfo.State == DevExpress.Utils.Drawing.ObjectState.Hot) {
        e.DrawGlyph(Properties.Resources.backImage_32x32_hovered);
        e.Handled = true;
    }
    if (e.ButtonInfo.Pressed) {
        e.DrawGlyph(Properties.Resources.backImage_32x32_pressed);
        e.Handled = true;
    }   
}

VB.NET

Private Sub windowsUIView1_CustomDrawBackButton(sender As Object, e As DevExpress.XtraBars.Docking2010.Views.WindowsUI.CustomDrawBackButtonEventArgs)
    If e.ButtonInfo.State = DevExpress.Utils.Drawing.ObjectState.Normal Then
        e.DrawGlyph(Properties.Resources.backImage_32x32_normal)
        e.Handled = True
    End If
    If e.ButtonInfo.State = DevExpress.Utils.Drawing.ObjectState.Hot Then
        e.DrawGlyph(Properties.Resources.backImage_32x32_hovered)
        e.Handled = True
    End If
    If e.ButtonInfo.Pressed Then
        e.DrawGlyph(Properties.Resources.backImage_32x32_pressed)
        e.Handled = True
    End If
End Sub