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Editorial Team
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Asked: 2026-05-20T12:58:11+00:00

I have a Form with only a simple listbox. The listbox is Full-docked and

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I have a Form with only a simple listbox. The listbox is Full-docked and the Form’s FormBorderStyle is set to None.

When I attach a MouseLeave event to a form, it does not fire. (It also does not fire MouseMove, MouseHover etc.)

However, if I undock the listbox and resize it so at least a part of the form is visible and if I move mouse over the visible part of the form, all mouse events fire again.

How to get the form to receive mouse events even if it’s consisted only of a full-docked listbox?

Thanks

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1 Answer

  1. Editorial Team

    It shouldnt fire bacause your mouse didnt enter to form on, it enters on listbox. So you should use MouseLeave event in listbox control

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