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Asked: 2026-05-19T01:09:50+00:00

Hi Today I encountered a new problem with MouseWheel I have written some codes

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Hi
Today I encountered a new problem with MouseWheel
I have written some codes in mousewheel event of my mdichild forms , when I open new mdichild form and select it and do mousewheel , it detects the event but when I click on a control on my base form and comeback to mdichild and use mouse wheel, mousewheel event is not triggered anymore unless I set focus on another MDIChildform and come back to the childform again .
Please help me solve the problem
Thanks

here is a sample of this problem which is a little modification on default MDIAPP template
http://egmahdi.com/mdiApptemplate.rar

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1 Answer

  1. Editorial Team

    Hi
    There is also another really simple answer to this problem , I noticed that when there is a control on mdichildform and I click on this control , everything is ok , so I placed a TButton on mdichildform and added button1.setfocus on form.mousedown event and everything is okay now , I also moved the button to -200 , -200 , so the button is never shown ,
    Actually I do not have any other control on my form and I just paint on the form ,

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