WinWindow.QueryDefaultFormIcon Event

Occurs before assigning default icons to the WinWindow‘s Template.

Namespace: DevExpress.ExpressApp.Win

Assembly: DevExpress.ExpressApp.Win.v24.1.dll

NuGet Packages: DevExpress.ExpressApp.Win, DevExpress.ExpressApp.Win.Design

NuGet Package: DevExpress.ExpressApp.Win

Declaration

C#

public static event EventHandler<QueryIconEventArgs> QueryDefaultFormIcon

VB.NET

Public Shared Event QueryDefaultFormIcon As EventHandler(Of QueryIconEventArgs)

Event Data

The QueryDefaultFormIcon event's data class is QueryIconEventArgs. The following properties provide information specific to this event:

Property	Description
IconLarge	Specifies the default large icon to be used by a Window‘s Template.
IconSmall	Specifies the default small icon to be used by a Window‘s Template.

Remarks

By default, the QueryIconEventArgs.IconLarge and QueryIconEventArgs.IconSmall properties contain default icons extracted from the application’s executable file. However, you can handle this event to specify custom default icons that should be used by Windows in a Windows Forms application. You can handle this event, for instance, in the Main method of your Program class.

Program.cs (Program.vb)

C#

using System.Drawing;
//...
public class Program {
    static Icon smallIcon;
    static Icon largeIcon;
    //...
    public static void Main(string[] arguments) {
        //...
        WinWindow.QueryDefaultFormIcon += WinWindow_QueryDefaultFormIcon;
        winApplication.Setup();
        winApplication.Start();
    }
    static void WinWindow_QueryDefaultFormIcon(object sender, QueryIconEventArgs e) {
        if (smallIcon == null)
            smallIcon = Icon.ExtractAssociatedIcon("C:\\MyIcon.ico");
        if(largeIcon == null)
            largeIcon = Icon.ExtractAssociatedIcon("C:\\MyIcon2.ico");
        e.IconLarge = largeIcon;
        e.IconSmall = smallIcon;
    }
}

VB.NET

Imports System.Drawing
'...
Public Class Program
    Private Shared smallIcon As Icon
    Private Shared largeIcon As Icon
    '...
    Public Shared Sub Main(ByVal arguments() As String)
        '...
        AddHandler WinWindow.QueryDefaultFormIcon, AddressOf WinWindow_QueryDefaultFormIcon
        winApplication.Setup()
        winApplication.Start()
    End Sub
    Private Shared Sub WinWindow_QueryDefaultFormIcon(ByVal sender As Object, _
    ByVal e As QueryIconEventArgs)
        If smallIcon Is Nothing Then
            smallIcon = Icon.ExtractAssociatedIcon("C:\MyIcon.ico")
        End If
        If largeIcon Is Nothing Then
            largeIcon = Icon.ExtractAssociatedIcon("C:\MyIcon2.ico")
        End If
        e.IconLarge = largeIcon
        e.IconSmall = smallIcon
    End Sub
End Class