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POsetGeometry() right after addWidget() issue
 

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    <p>I'm having troubles setting dimensions of a child-QWidget right after it is added to a parent-QWidget. The issue is that it simply doesn't set the geometry:</p> <pre><code>from PyQt4 import QtCore, QtGui class MyWidget(QtGui.QWidget): def __init__(self): super(MyWidget, self).__init__() self.initUI() def initUI(self): # setting up parent QWidget self.setMinimumSize(256, 256) self.setMaximumSize(256, 256) self.GL = QtGui.QGridLayout(self) self.GL.setMargin(0) # setting up child QWidget self.GL.myWidget2 = QtGui.QFrame() self.GL.myWidget2.setMinimumSize(128, 128) self.GL.myWidget2.setMaximumSize(128, 128) self.GL.myWidget2.setStyleSheet("background: orange") # attaching child to parent self.GL.addWidget(self.GL.myWidget2) # trying to reposition child in parent's local space self.GL.myWidget2.setGeometry(QtCore.QRect(0, 128, self.width(), self.height())) if __name__ == '__main__': app = QtGui.QApplication(sys.argv) widget = MyWidget() widget.show() app.exec_() </code></pre> <p>Adding a timer that sets the geometry after a short delay does work though... (replacing <code>self.GL.myWidget2.setGeometry([...])</code> with):</p> <pre><code> timer = QtCore.QTimer() timer.singleShot(10, self.updatePosition) def updatePosition(self): self.GL.myWidget2.setGeometry(QtCore.QRect(0, 128, self.width(), self.height())) </code></pre> <p>...so I suspect the addWidget(...) method to be doing a callback e.g. that redraws the widget in its default position while the main thread has already passed the <code>self.GL.myWidget2.setGeometry([...])</code> line.</p> <p>This is purely speculative though, any inside into how <code>addWidget()</code> affects following coder or execution timing would be much appreciated!</p>
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    1. COLayouts manage the positioning of widgets. Normally, you don't put widgets into layouts _and_ position them manually. What are you trying to do? Perhaps you want `alignment/setAlignment` of `QLayout`?
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    2. COwhy `self.GL.myWidget2` instead of `self.myWidget2`?
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    3. COMy apologies for a late response. @Avaris: I hadn't been aware that widgets can be directly parented to other widgets and was under the impression that a layout is always required. My aim was to achieve exactly what the answer below examplifies. X.Jacobs: This was meant for clarity reasons to keep a relational hierarchy. Adding the widget directly as a child to another widget was exactly what I intended - thanks.
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