graphic issues with table control (CVI 2020, Win 11)

[Wolfgang]

Hello,

when I moved my project development to a new computer, running Win11 instead of Win10 (and a larger screen if this may be relevant) I realized that the triangles of tab panels may be invisible. The control to move to other tabs is still functional, but invisible. Invisibility may be partial or complete, see the screenshots below.

The screenshots are from the CVI UI editor, but the issue also occurs in user programs.

If NI is planning a bug fix release, these might be one to be included...

on the older computer, Win 10, triangles are clearly visible

 picture above with Win 10, triangles visible

pictures below from Win11, triangles (partially) invisible

Win11, new computer

[gdargaud]

Hello Wolfgang,

what happens when you change the [Conform to system colors] and [Use Windows visual styles for controls] attributes of the panel containing the Tab ?

Or when you change the Win11 theme to a different one ?

[rolfk]

Definitely looks like a theme or similar issue. The arrows changed from a simple angle bracket to a full triangle, most likely occupying a pixel or so more of screen estate and then GDI clipping suddenly jumps in.

And it might not be a very trivial fix to do, depending how that issues is caused by Windows theming.

[gdargaud]

That's why I always disable the 2 options I mentioned above: much less dependencies on Windows weirdnesses.