Bug: MouseWheel in WinForms C1ComboBox

Posted by: andreas.kren on 18 September 2017, 9:12 am EST

  • Posted 18 September 2017, 9:12 am EST


    the mouse wheel in drop down portion of a c1ComBox is only working when the drop down area gets the focus.

    It s not working when the scroll bars are clicked, I get it only to work when the mouse is somewhere over the drop down area and then I press the middle mouse button (on the wheel in my case) AND I move the wheel up. Since then the wheel is working flawlessly. (unless you close the dropdown and open it again)

    Cant't be the original intention ?!

  • Replied 20 September 2017, 5:38 am EST

    Hi Andreas,

    I am able to reproduce the issue at my end as well. I have escalated this to the development team (ID: 286907) and will revert you back once have any information from them.

  • Replied 22 September 2017, 12:04 pm EST

    Thank you. Maybe there is a workaround for the meantime?! Sth one (=I) could do in DropDown Event ?
  • Replied 28 September 2017, 12:53 am EST

    Hi Andreas,

    I am sorry but there is no workaround as of now.
    However, the fix for this issue will be available in 2017 v3 release.

  • Replied 14 November 2017, 6:41 am EST


    The issue has been fixed in the latest build of 2017 V3. And, you can update using C1Live.

  • Marked as Answer

    Replied 30 January 2018, 2:28 pm EST


    Just to follow-up, did you upgrade using C1Live. If you haven't then you can also use the following build version for the same: http://prerelease.componentone.com/hotfixes/dotnet/C1WinForms.4_4.0.20173.291.zip
    Do let me know, if you still face the issue.

    Ruchir Agarwal
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