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QSqlqueryModel with Mouse Move

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  • F Offline
    F Offline
    Fuxi
    wrote on last edited by
    #1

    Hello, I have a QSqlQueryModel where I override the data function to give the columns different colors.
    When I move the mouse over the connected QTableView
    (target outside the tableview)
    without pressing a mouse button, the data function is always called with the model index of the position where I started the movement. Is there any way to disable this?
    Thanks

    Christian EhrlicherC 1 Reply Last reply
    0
    • F Fuxi

      Hello, I have a QSqlQueryModel where I override the data function to give the columns different colors.
      When I move the mouse over the connected QTableView
      (target outside the tableview)
      without pressing a mouse button, the data function is always called with the model index of the position where I started the movement. Is there any way to disable this?
      Thanks

      Christian EhrlicherC Offline
      Christian EhrlicherC Offline
      Christian Ehrlicher
      Lifetime Qt Champion
      wrote on last edited by
      #2

      @Fuxi said in QSqlqueryModel with Mouse Move:

      Is there any way to disable this?

      Since the data() function is called whenever the cell needs to be redrawn - no.
      And what's the problem with someone calling data()?

      Qt Online Installer direct download: https://download.qt.io/official_releases/online_installers/
      Visit the Qt Academy at https://academy.qt.io/catalog

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      • F Offline
        F Offline
        Fuxi
        wrote on last edited by
        #3

        Thanks. The problem is a bit difficult to describe. But the fact that only one column is called when the mouse is moved isn't good for my application. Can I simply redraw all columns instead of just redrawing the source column?
        For example, if the mouse moved end , everything will be redrawn. Thanks.

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        • Christian EhrlicherC Offline
          Christian EhrlicherC Offline
          Christian Ehrlicher
          Lifetime Qt Champion
          wrote on last edited by
          #4

          A redraw can happen every time on every cell / region inside your widget when e.g. the os or Qt decides that there is a redraw needed - so no you can't control this.

          Qt Online Installer direct download: https://download.qt.io/official_releases/online_installers/
          Visit the Qt Academy at https://academy.qt.io/catalog

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          • F Offline
            F Offline
            Fuxi
            wrote on last edited by
            #5

            Thank you

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