Rad Controls Anti-aliasing issue
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George C.
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George C. asked on 10 Jun 2021, 09:59 PM | edited on 10 Jun 2021, 10:00 PM


I've been using Rad controls  for a long time in my projects ( including mostly buttons, labels and gridview ) without facing noticeable GUI issues , though I sometimes face an Anti-aliasing issue of controls in all of my forms ( in a single project), and I have no idea what's the matter.

More surprising is the wired solution I found out to the issue and that's to add a random new rad control to one of the forms, such as  a button or a label. I attached 2 pictures that can illustrate the issue and the solution I described :

"Before.jpg" illustrates a rad button with "Tahoma" font; there is Anti-aliasing issue (sharp edges of letters in Text)

"After.jpg" illustrates a rad button with "Tahoma" font and a fresh new rad button added to the form;  there is no Anti-aliasing issue


P.S :

1- The issue involves not just the rad button, but also labels, gridviews (and maybe some other rad controls too).

2- Font  can't be the cause of the issue as I've tried using different fonts and it didn't make any difference.

3- I don't manually (dynamically) set or unset the Anti-aliasing feature of the rad controls

4- The newly added Rad control must be present (and visible!) in one of the forms  to solve the issue, otherwise the issue remains.




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Dess | Tech Support Engineer, Principal
Telerik team
answered on 11 Jun 2021, 08:20 AM
 Hello, George,

The provided detailed information and sample screenshots are greatly appreciated. However, they are not enough for replicating the issue locally and investigate it further. 

I would highly encourage you to have a look at the following help article which gives more details about the text rendering in the Telerik UI for WinForms suite:

The following screenshot illustrates what are the differences in the text rendering according to the applied settings like TextRenderingHint and UseCompatibleTextRendering:

I have also attached my sample project for your reference. Please give it a try and see how it works on your end.

Could you please specify the exact steps how to reproduce the problem  with the provided sample project? Once we reproduce the issue locally, we would be able to make an adequate analysis of the precise case and provide further assistance. Thank you in advance.

I hope this information helps. If you need any further assistance please don't hesitate to contact me. 

Dess | Tech Support Engineer, Sr.
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George C.
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Answers by
Dess | Tech Support Engineer, Principal
Telerik team
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