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Bug Report T324677
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TdxBarSubItem arrow is incorrectly scaled at high DPI settings (more than 96)

created 9 years ago (modified 9 years ago)

On High-DPI screens the arrow button of the TdxBarSubItem component does not seem to scale properly. The higher the DPI value, the larger the arrow size. This goes both for an item in a menu and an item on a toolbar.

We have perhaps found a fix by modifying the TdxBarButtonLikeControl.CalcDrawParams procedure. It calculates the ArrowSize as follows:

DrawParams.ArrowSize := cxGetValueCurrentDPI(cxSize(w, h));

Assuming that this scales a width and height that is already scaled, we removed the cxGetValueCurrentDPI conversion:

DrawParams.ArrowSize := cxSize(w, h);

The results can be seen in the attached picture (left = before, right = after). This is on a 240 DPI notebook screen (15.6", 3840 x 2160).

Can you confirm that this fix is correct, and if so, add it in a future release?

If the is not correct , can you investigate and let us know your findings?

Thanks in advance.

Hans Kalter
Allround Automations

Comments (3)
DevExpress Support Team 9 years ago

    Hello,

    Thank you for your report. I have forwarded this ticket to our developers.
    At first glance, your fix looks correct. Moreover, I think that we might fix this problem the same way.
    Would you mind if I publish the content of this ticket? I can remove your attachment if necessary.

    HK HK
    Hans Kalter 9 years ago

      Thanks. Feel free to publish the contents of this ticket.

      DevExpress Support Team 9 years ago

        Thanks. Published.

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        Answers approved by DevExpress Support

        created 9 years ago

        We have fixed the issue described in this ticket and will include the fix in our next maintenance update. To apply this solution before the official update, request a hotfix by clicking the corresponding link for product versions you require.

        Note: Hotfixes may be unavailable for beta versions and updates that are about to be released.

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