This little caveat has been bothering me for a few hours.
Adding a widget as a child of a parent widget makes it position itself at
(0, 0). That's fine, I can move it around in resizeEvent. The size of the
widget is determined by its children - say if the widget is a container for
a couple of buttons, the amount of buttons and their default sizes govern
the size of the container.
But, installing a layout onto the parent of the container causes the
container to seemingly force its children to resize to an inappropriate
size.
I could imaging that assigning a layout to a parent with children might
implicitly assign its children to the layout, but that isn't what I would
expect. Ultimately, I would like to have a completely free-floating widget.
Uncomment the layout line to see what happens. This happens in both PyQt4
and 5 so I expect to be missing something trivial.
from PyQt4.QtGui import *
from PyQt4.QtCore import *
class Window(QWidget):
def __init__(self, parent=None):
super(Window, self).__init__(parent)
menu = QWidget(self)
menu.setObjectName('Menu')
btn1 = QPushButton('Hello')
btn2 = QPushButton('World')
layout = QBoxLayout(QBoxLayout.LeftToRight, menu)
layout.addWidget(btn1)
layout.addWidget(btn2)
# layout = QBoxLayout(QBoxLayout.TopToBottom, self)
self.setStyleSheet("#Menu {background-color: darkgray; }")
self.resize(300, 100)
if __name__ == '__main__':
import sys
app = QApplication(sys.argv)
win = Window()
win.show()
sys.exit(app.exec_())
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