Possible to use a widget in another widget's paintEvent?

[robot_love]

I have a program that will allow people to track certain tasks that they are working on. I have stored the tasks in a list, and have created a widget (called "taskWidget") which I would like to use to represent each task on the list. I would like a widget instead of a regular row to make editing/comprehension easier.

I have created a scrollArea as my central widget and created a custom widget as my TaskView.

From what I understand, in TaskView I need to re-implement paintEvent(). My question is: how do I create and paint my taskWidget from inside paintEvent()?

I have used Mark Summerfield's excellent Rapid GUI Programming, and am basing my paintEvent off of his WaterModelView in chapter 16. I have spent 4 days scouring this forum, the internet, and PyQt's mailing lists, but cannot get anything to paint. I feel like I'm missing something fundamental.

I started with a QItemDelegate, and got my widget to appear as an editor, but not as the underlying task. I then moved away from QItemDelegate to subclassing QWidget and adding it to the scrollArea, so I know it needs to handle all painting inside that scrollArea.

Any help that can be provided would be greatly appreciated. It's in PyQt, but I understand enough C++ to get the gist of things if that helps anyone to respond.

def paintEvent(self, event):
        if self.model is None:
            return
        task = TaskWidget("999-999", 
                          "THIS IS A RATHER LONG TASK NAME", 
                          99999, 
                          False)
        size = task.height()
        minY = event.rect().y()
        maxY = minY + event.rect().height() + size
        minY -= size
        painter = QPainter(self)
        painter.setRenderHint(QPainter.Antialiasing)
        painter.setRenderHint(QPainter.TextAntialiasing)
 
        y = 0
        for row in range(self.model.rowCount()):
            if minY <= y <= maxY:
                painter.save()
                t = TaskWidget(self.model.tasks[row].studyNumber, 
                               self.model.tasks[row].taskName, 
                               self.model.tasks[row].timeInMinutes)
                painter.initFrom(t)
                painter.restore()
            y += size
            if y > maxY:
                break

def paintEvent(self, event):
        if self.model is None:
            return
        task = TaskWidget("999-999", 
                          "THIS IS A RATHER LONG TASK NAME", 
                          99999, 
                          False)
        size = task.height()
        minY = event.rect().y()
        maxY = minY + event.rect().height() + size
        minY -= size
        painter = QPainter(self)
        painter.setRenderHint(QPainter.Antialiasing)
        painter.setRenderHint(QPainter.TextAntialiasing)
        
        y = 0
        for row in range(self.model.rowCount()):
            if minY <= y <= maxY:
                painter.save()
                t = TaskWidget(self.model.tasks[row].studyNumber, 
                               self.model.tasks[row].taskName, 
                               self.model.tasks[row].timeInMinutes)
                painter.initFrom(t)
                painter.restore()
            y += size
            if y > maxY:
                break

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[jacek]

I then moved away from QItemDelegate to subclassing QWidget and adding it to the scrollArea, so I know it needs to handle all painting inside that scrollArea.

If you add widgets to scroll area, they should draw themselves. Just don't forget to show() them.

[robot_love]

I'll try that. Thanks, Jacek.