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[SOLVED] Custom Widget with custom stylesheet

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  • SGaistS Offline
    SGaistS Offline
    SGaist
    Lifetime Qt Champion
    wrote on last edited by
    #2

    Hi,

    If i'm not wrong, the property will be updated when your widget stat changes so you simply have to use the objectColor property to retrieve the color in your paintEvent.

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    Please read the Qt Code of Conduct - https://forum.qt.io/topic/113070/qt-code-of-conduct

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    • B Offline
      B Offline
      butterface
      wrote on last edited by
      #3

      Unfortunatley not. It stays the same. Here I also have the color property which is from QWidget directly and this one changes (of course?).
      Is it possible that I have to use QStyle somehow? Just using the property does not do the trick. If so the question is how. ;)

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      • raven-worxR Offline
        raven-worxR Offline
        raven-worx
        Moderators
        wrote on last edited by
        #4

        what type is "MyWidget"?
        I also think the declaration should only contain 1 colon:
        @
        MyWidget:disabled {
        qproperty-objectColor: green;
        }
        @

        Just a hint for the future:

        In your case Qt ensures the polishing, but if you use custom properties in your CSS selectors you have to do like this:

        C++:
        @
        myWidget->setProperty("myProperty", true);
        myWidget->style()->polish(myWidget);
        @

        CSS:
        @
        MyWidget[myProperty="true"] {
        ....
        }
        @

        --- SUPPORT REQUESTS VIA CHAT WILL BE IGNORED ---
        If you have a question please use the forum so others can benefit from the solution in the future

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        • B Offline
          B Offline
          butterface
          wrote on last edited by
          #5

          MyWidget is derived from QWidget.

          @
          MyWidget:disabled {
          qproperty-objectColor: green;
          }
          @
          does also not work.

          @
          MyWidget {
          qproperty-objectColor: yellow;
          }

          MyWidget[enabled="false"] {
          qproperty-objectColor: green;
          }
          @

          Is doing now exactly what I want it to do with style()->polish(this) in my paintEvent of the widget.

          Thanks!

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          • raven-worxR Offline
            raven-worxR Offline
            raven-worx
            Moderators
            wrote on last edited by
            #6

            yea stylesheets are a mystery some/most times. ;)

            But don't call style()->polish(this) in the paintEvent since it's not necessary to do the hard work in every paintEvent call. Only if the property changes. Maybe you can even remove it completely and it will still work?

            --- SUPPORT REQUESTS VIA CHAT WILL BE IGNORED ---
            If you have a question please use the forum so others can benefit from the solution in the future

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            • B Offline
              B Offline
              butterface
              wrote on last edited by
              #7

              Unfortunately it does not work without the polish. The only thing I can do is to check if anything has changed and call polished then if so.

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              • raven-worxR Offline
                raven-worxR Offline
                raven-worx
                Moderators
                wrote on last edited by
                #8

                better do the polishing on QEvent::EnabledChange.

                Edit:
                another thing which just came to my mind to check: Did you provide the Q_OBJECT macro in your custom widgets class declaration?!

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                • B Offline
                  B Offline
                  butterface
                  wrote on last edited by
                  #9

                  Yes, the Q_OBJECT macro is there. I also use a bunch of signals and slots so it has to.

                  How do I get this event?

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                  • raven-worxR Offline
                    raven-worxR Offline
                    raven-worx
                    Moderators
                    wrote on last edited by
                    #10

                    in QWidget::event()

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                    • B Offline
                      B Offline
                      butterface
                      wrote on last edited by
                      #11

                      Works perfect now.
                      Thanks!

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