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Thread: Custom plugin for a layout

  1. #1
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    Question Custom plugin for a layout

    Is it possible to create a designer plugin for a custom "widget" that does not derive from QWidget? I have a custom layout class that derives from QBoxLayout, and I would like to display it in designer, just like I do with my custom widgets. The problem is that the createWidget() method of the plugin class returns a QWidget*, but the layout does not derive from QWidget.

    Thanks,
    Cristian

  2. #2
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    Default Re: Custom plugin for a layout

    Quote Originally Posted by cocheci
    Is it possible to create a designer plugin for a custom "widget" that does not derive from QWidget? I have a custom layout class that derives from QBoxLayout, and I would like to display it in designer, just like I do with my custom widgets. The problem is that the createWidget() method of the plugin class returns a QWidget*, but the layout does not derive from QWidget.
    No, it has to be QWidget. You can cheat a little though and return an empty QWidget just with your layout set (just remember the widget has to be marked as a container).

    I don't remember the exact syntax, but it's something like this:
    Qt Code:
    1. QWidget * plugin::createWidget(const QString &feature, QWidget *p){
    2. if(feature=="xxx"){
    3. QWidget *w = new QWidget(p);
    4. MyLayout *l = new MyLayout(p);
    5. w->setLayout(l);
    6. return w;
    7. }
    8. }
    To copy to clipboard, switch view to plain text mode 

  3. The following user says thank you to wysota for this useful post:

    cocheci (12th June 2006)

  4. #3
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    Default Re: Custom plugin for a layout

    Quote Originally Posted by wysota
    No, it has to be QWidget. You can cheat a little though and return an empty QWidget just with your layout set (just remember the widget has to be marked as a container).

    I don't remember the exact syntax, but it's something like this:
    Qt Code:
    1. QWidget * plugin::createWidget(const QString &feature, QWidget *p){
    2. if(feature=="xxx"){
    3. QWidget *w = new QWidget(p);
    4. MyLayout *l = new MyLayout(p);
    5. w->setLayout(l);
    6. return w;
    7. }
    8. }
    To copy to clipboard, switch view to plain text mode 

    This worked, thank you!
    Cristian

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