Using delegates in subWindows (infinite setModelData())

  • I try to make my first MDI-app in Qt. I create a TableView in a window ,set delegate for it and call openPersistentEditor() for each cell. After that when I change a value in some cell, the folllowing occurs: after finish the editing setModelData() is called, but every next click on any point in this window call setModelData() again. When I change window type to Window, setModelData called only once. Is that normal?
    I don't know, which code may be neccesary for solving my problem, because i tried to do something on difrent delegates, windows and TableView and without success.

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