MDI Docking Manager Icon

[Administrator]

I am using a form that is using a DockingManager. In the form, I have added a user control. I have set the user control to be a mdi tab page by using the dockingManager1.SetAsMDIChild() method. I have also set an ImageList to the DockingManager.

During various points in the application, I would like to change the icon that is used for the user control that is in the docking manager. For some reason, when I run dockingManager1.SetDockIcon() when the control is in the MDI state, the icon does not update. However, if I choose to make the control docked, it will then update. Is there any way to fix this?

[Administrator]

Hi Michael,

Thank you for using Syncfusion products.

Please try setting DockIcon in dockingManager1_NewDockStateEndLoad event handler as follows and let me know if this helps you.

[C#]

private void dockingManager1_NewDockStateEndLoad(object sender, EventArgs e)
{

this.dockingManager1.SetDockIcon(this.panel1, 0);
}

Sample link : http://websamples.syncfusion.com/samples/Tools.Windows/F75139/main.htm

Regards,
Jaya

[Administrator]

I have updated the sample with the actions that I am doing. You will see that I change the icon when a different node is selected in the treeview. The icon updates fine if the panel is docked. But once it is set as an mdi child, it no longer gets updated.



Win_Tools_MDIChild_d01635e2.zip

[Administrator]

Hi Michael,

The mentioned issue is suspected to be a defect and we have forwarded this issue to our development team for more analysis and will update you with more details on or before July 24th.

Please let me know if any concerns.

Regards,
Jaya

[Administrator]

Have there been any updates on this?

[Administrator]

Hi Michael,

Thank you for youe patience.

The SetDockIcon() method used for Docking controls in Dockable mode. If a dock control is in MDI mode, it is a normal form (DockingWrapperForm) - in that case SetDockIcon does not work, so we have to use Form.Icon for this purpose.

Please refer the below code snippet.

[C#]

      if (this.dockingManager1.IsMDIMode(panel1))
            {
               DockingWrapperForm form = panel1.Parent as DockingWrapperForm;
               

               if (form != null && index>0)
                {                
                    form.Icon = Icon.FromHandle(new Bitmap(this.dockingManager1.ImageList.Images[index]).GetHicon());        
          
                }
            }

Please refer the sample for above illustrates.
http://websamples.syncfusion.com/samples/Tools.Windows/F_75139/main.htm

Please let me know if this helps.

Regards,
Hema

[Administrator]

Thanks, that works great.

[Administrator]

Hi Michael,

Thank you for the update.

Regards,
Hema

[Jean-Pierre Semery]

What am I supposed to write here?

[Durga Rajan]

Hi Jean-Pierre Semery, 

If you have any queries or any technical assistance with regards to Docking Manager, let us know. We will be happy to help you. 

Regards, 

Durga S.