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    <p>I find this a little more complicated than just using <code>layout.setAlignment()</code>. It kept not working for me until just now, when I figured out that if you have expanding widgets that you set a maximum height for, then that widget will not be aligned the way you want. </p> <p>Here is example code that does <em>not</em> top align the <code>QTextBrowser()</code> widget even though I call <code>layout.setAlignment(Qt.AlignTop)</code>. Sorry that it is in Python, but it is pretty easy to translate to C++ (I have gone the other way many times).</p> <pre><code>from PyQt4.QtCore import * from PyQt4.QtGui import * class MyWidget(QWidget): """ Create a widget that aligns its contents to the top. """ def __init__(self, parent=None): QWidget.__init__(self, parent) layout = QVBoxLayout() label = QLabel('label:') layout.addWidget(label) info = QTextBrowser(self) info.setMinimumHeight(100) info.setMaximumHeight(200) layout.addWidget(info) # Uncomment the next line to get this to align top. # layout.setAlignment(info, Qt.AlignTop) # Create a progress bar layout. button = QPushButton('Button 1') layout.addWidget(button) # This will align all the widgets to the top except # for the QTextBrowser() since it has a maximum size set. layout.setAlignment(Qt.AlignTop) self.setLayout(layout) if __name__ == '__main__': import sys app = QApplication(sys.argv) widget = MyWidget() widget.show() widget.resize(QSize(900, 400)) app.exec_() </code></pre> <p>The following explicitly calls <code>layout.setAlignment(info, Qt.AlignTop)</code> to get the expending text widget to work.</p> <pre><code>from PyQt4.QtCore import * from PyQt4.QtGui import * class MyWidget(QWidget): """ Create a widget that aligns its contents to the top. """ def __init__(self, parent=None): QWidget.__init__(self, parent) layout = QVBoxLayout() label = QLabel('label:') layout.addWidget(label) info = QTextBrowser(self) info.setMinimumHeight(100) info.setMaximumHeight(200) layout.addWidget(info) # Uncomment the next line to get this to align top. layout.setAlignment(info, Qt.AlignTop) # Create a progress bar layout. button = QPushButton('Button 1') layout.addWidget(button) # This will align all the widgets to the top except # for the QTextBrowser() since it has a maximum size set. layout.setAlignment(Qt.AlignTop) self.setLayout(layout) if __name__ == '__main__': import sys app = QApplication(sys.argv) widget = MyWidget() widget.show() widget.resize(QSize(900, 400)) app.exec_() </code></pre>
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    1. POQVBoxLayout: How to vertically align widgets to the top instead of the center
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    1. USnoisygecko
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