Solved TD-22593: Checkbox & radiobutton: flicker when hover over

Report TD 5.x and 6.x bugs and possible workarounds.
Dave Rabelink
Founder/Site Admin
Founder/Site Admin
Netherlands
Posts: 2837
Joined: 24 Feb 2017, 09:12
Location: Gouda, The Netherlands

TD-22593: Checkbox & radiobutton: flicker when hover over

Post by Dave Rabelink » 10 Dec 2015, 13:55

Checkboxes and radiobuttons do flicker when the form/dialog is not active and when hovering over the objects.

In a GUI where the user moves the mouse over several (embedded) forms which are not active, the flickering as very apparent and creates an unprofessional feeling using the GUI.

Use the testcase.

- Hover over checkboxes and radiobuttons of the windows which are not having the focus
(so select form 1 and hover over form 2).
- See that both the text and the "image" is repainted causing flickers.
- See that when you move the mouse over a checkbox and keep the mouse over it (do not move), the form itself will get flooded with WM_Paint messages. (see the log window displaying the received messages)

When the workstation is less powerful, the flicker gets worse.
Best is to simulate a slower machine by using a CPU limiter tool:

http://mion.faireal.net/BES/

(this free tool is perfect for make your application slow to test GUI and other responsiveness).
TestFlickerHideWindow.zip
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Regards,
Dave Rabelink

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Dave Rabelink
Founder/Site Admin
Founder/Site Admin
Netherlands
Posts: 2837
Joined: 24 Feb 2017, 09:12
Location: Gouda, The Netherlands

Checkbox & radiobutton: flicker when hover over

Post by Dave Rabelink » 20 Apr 2016, 08:44

I can confirm that TD 6.3 SP1 UPD2 (build 47957) has fixed this issue.
Regards,
Dave Rabelink

Image
Articles and information on Team Developer Tips & Tricks Wiki
Download samples, documents and resources from TD Sample Vault
Videos on TDWiki YouTube Channel

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