Why my QWidget does not appear beside the other ones?

neon29

Hi!

My GLWidget (inherited from QtOpenGL.QGLWidget) does not appear on screen, while it should be visible at the right of the other widgets. However, when I switch from an horizontal layout:

layout_final = Qtgui.QHBoxLayout()

to a vertical one:

layout_final = Qtgui.QVBoxLayout()

my GL widget does appear under the other widgets, but I want it to be on the right of the other widgets, not under.

Here is the full code:

class MainWindow(QtGui.QMainWindow):

    def __init__(self):
        super(MainWindow, self).__init__()


        # create layout
        layout_before_final = QtGui.QVBoxLayout()
        layout_final = QtGui.QHBoxLayout()
        layout = QtGui.QGridLayout()
        layout1 = QtGui.QGridLayout()
        self.groupBox = QtGui.QGroupBox('Set HDF5 file')
        self.groupBox1 = QtGui.QGroupBox('Current HDF5 file')

        # instance widgets
        # first box
        self.setH5Button = QtGui.QPushButton('set H5')
        self.currentH5LineEdit = QtGui.QLineEdit('')
        layout.addWidget(self.setH5Button, 0,0)
        layout.addWidget(self.currentH5LineEdit, 0, 1)
        self.groupBox.setLayout(layout)

        # second box
        self.channelsLabel = QtGui.QLabel('Channel')
        self.channelsComboBox = QtGui.QComboBox()
        self.levelsLabel = QtGui.QLabel('Level')
        self.levelsComboBox = QtGui.QComboBox()      


        layout1.addWidget(self.channelsLabel, 0, 0, 1, 1)
        layout1.addWidget(self.channelsComboBox, 0, 1, 1, 1)
        layout1.addWidget(self.levelsLabel, 1, 0, 1, 1)
        layout1.addWidget(self.levelsComboBox, 1, 1, 1, 1)
        self.groupBox1.setLayout(layout1)        

        # create QWidget to gather the two previous boxes

        self.widget = QtGui.QWidget()
        layout_before_final.addWidget(self.groupBox)
        layout_before_final.addWidget(self.groupBox1)   

        self.widget.setLayout(layout_before_final)

        # GL widget
        self.widgetGL = MyWidget()

        # create a final widget to add the GL widget
        self.finalWidget = QtGui.QWidget()
        layout_final.addWidget(self.widgetGL)
        layout_final.addWidget(self.widget)   

        self.finalWidget.setLayout(layout_final)                


        self.setCentralWidget(self.finalWidget)

        self.setWindowTitle('PyPractis')
        self.resize(640, 480)      





def main():
    import sys

    app = QtGui.QApplication(sys.argv)


    w = MainWindow()
    w.resize(640, 480)
    w.show()
    sys.exit(app.exec_())

if __name__ == '__main__':
    main()

Hope someone could help ;)

Chris Kawa

I'm not that fluent in python, but

layout_final.addWidget(self.widgetGL)
layout_final.addWidget(self.widget)

Horizontal layouts add stuff left to right, so, if anywhere, the GL widget would be on the left, not on the right.

I don't think a GL widget has any minimum size. It might be that the other widgets have "greedy" horizontal size policies (I think a label does by default). Try setting a minimum width or an expanding horizontal size policy on the GL widget.