TsListbox custom WindowProc lost after clear

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  • #59183
    Support
    Keymaster

    Hi

    Thank you for the demo. I will check it and I hope to find a solution at the nearest few days.

    Another topic should be deleted, I think.

    #59206
    Support
    Keymaster

    Here is a changed program, look it please.

    Changed code was marked with “// Serge”

    #59218
    JM-DG
    Participant
    'Support' wrote:

    Here is a changed program, look it please.

    Changed code was marked with “// Serge”

    I see that you reset the wndproc after each “clear”.

    It seems that I also have to do a reset after having removed all items in the list using the remove button.

    I noticed that I don't need this reset after the list is emptied if I initialize my custom windowproc before adding items in the list in the FormCreate event.

    But when I try it in my real application the behavior changes. Even if I initialize my custom windowproc at the start, I have to do resets every clear.

    The behavior seem inconsistant as to why & when we're losing our custom wndproc.

    #59222
    Support
    Keymaster

    I will try to disable this code which recreates the control when “Clear” is called.

    New release with changes will be available soon.

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