Rad Ribbon Bar - issue with High DPI

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RibbonBar RibbonForm
Toby
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Toby asked on 27 May 2022, 12:14 PM | edited on 27 May 2022, 12:26 PM

Hi,

I'm having issues with the ribbon bar title bar when swapping my application between an HD monitor and 4K monitor

This is what is the title bar looks like on the 4K monitor

 

and this is what it looks like after dragging the application to the HD montior

 

Any ideas what might be causing this and a possible workaround or solution ?

I'm using the window 7 theme if that matters as well as .Net 4.7.2 and the latest version on Telerik Winforms.

Kind regards

Toby

 

 

 

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Stoyan
Telerik team
answered on 30 May 2022, 02:16 PM

Hello Toby,

You have encountered a known bug. Here is a link to the bug in our feedback portal. There you can subscribe to follow the status changes of the item, so you can get notified, when we release a fix for it. You can also vote for the item, so it can get prioritized. 

Until we have a fix, I can suggest using the following workaround - set the AllowTheming property to false:

    public partial class RadRibbonForm1 : Telerik.WinControls.UI.RadRibbonForm
    {
        public RadRibbonForm1()
        {
            InitializeComponent();
            this.AllowTheming = false;
        }
    }

This should force correct drawing of the title bar.

I hope this information will help you with your problem. If you need further assistance, do not hesitate to write back.

Regards,
Stoyan
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Stoyan
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