python - How can I stretch a single widget in a horizantal layout in PyQt4? -


here 3 pushbutton equivalent in size, how increase size of first pushbutton occupies more space other 2 buttons. 

from pyqt4 import qtgui import sys  class allwidgets(qtgui.qwidget):      def __init__(self):         super(allwidgets, self).__init__()         layout = qtgui.qhboxlayout()         #code pushbutton 1         pushbutton_1 = qtgui.qpushbutton()         pushbutton_1.settext('first')         layout.addwidget(pushbutton_1)         #code pushbutton 2         pushbutton_2 = qtgui.qpushbutton()         pushbutton_2.settext('second')         layout.addwidget(pushbutton_2)         #code pushbutton 3         pushbutton_3 = qtgui.qpushbutton()         pushbutton_3.settext('third')         layout.addwidget(pushbutton_3)         self.setlayout(layout)  if __name__ == '__main__':     app = qtgui.qapplication(sys.argv)     display = allwidgets()     display.show()     sys.exit(app.exec_())

the second (optional) argument of addwigdet() strech factor. if want first button stretch, do:

layout.addwidget(pushbutton_1, 1)

if want buttons stretch, first 1 bigger, need use different stretch factors:

layout.addwidget(pushbutton_1, 2) layout.addwidget(pushbutton_2, 1) layout.addwidget(pushbutton_3, 1)

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