I want to create some tabs, and I read this answer: How to add a tab in PySide
I use the code in the answer and made some changes. Cause my code has to read some files and get the name of my tabs from those file, so that I add a for loop in my code. And here is my code.
from PySide import QtCore, QtGui
import sys
import dflash_controller as con
if __name__ == "__main__":
list = [['a', 3], ['b', 4], ['c', 5], ['d', 6]]
app = QtGui.QApplication(sys.argv)
wid = QtGui.QWidget()
grid = QtGui.QGridLayout(wid)
wid.setLayout(grid)
# setting the inner widget and layout
grid_inner = QtGui.QGridLayout(wid)
wid_inner = QtGui.QWidget(wid)
wid_inner.setLayout(grid_inner)
# add the inner widget to the outer layout
grid.addWidget(wid_inner)
# add tab frame to widget
wid_inner.tab = QtGui.QTabWidget(wid_inner)
grid_inner.addWidget(wid_inner.tab)
# create tab
for i, index in enumerate(list[0:]):
new_tab = QtGui.QWidget(wid_inner.tab)
grid_tab = QtGui.QGridLayout(new_tab)
grid_tab.setSpacing(10)
wid_inner.tab.addTab(new_tab, index[0])
new_tab.setLayout(grid_tab)
wid.show()
app.exec_()
It really shows up my tabs. However, I met a warning: QLayout: Attempting to add QLayout "" to QWidget "", which already has a layout Since this tab code just a part of the whole code, the problem will block the data flow. And I have no idea what's wrong with it. I searched for answers, but other answer aren't written in python.
If anyone can help me, thanks in advance.
When you assign a widget as the parent of a
QLayout
by passing it into the constructor, the layout is automatically set as the layout for that widget. In your code you are not only doing this, but explicitly callingsetlayout()
. This is no problem when when the widget passed is the same. If they are different you will get an error because Qt tries to assign the second layout to your widget which has already had a layout set.Your problem lies in these lines:
Here you are setting
wid
as the parent forgrid_inner
. Qt wants to setgrid_inner
as the layout forwid
, butwid
already has a layout as set above. Changing the above two lines to this will fix your problem. You can remove calls tosetLayout()
as they are redundant.Use one method or the other for setting the layout to avoid confusion.
Assigning widget as parent:
Explicitly setting the layout: