Can´t integrate QTabWidget into a Layout besides other one´s

by Martin Fitzpatrick Last updated PyQt5 FAQ
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Nudlwoodz7756 | 2020-10-06 13:15:53 UTC | #1

Hi together,

i´m new to Python and am stuck with a problem where I can´t find a solution. Perhaps (or nearly sure) the problem exists just between the Headset ^^

I´m trying to (actually still as an exercise) create a Layout in PyQt5 and trying to implement different Layouts into 1 QHBoxLayout. Everything works fine, but I am not able to integrate a QTabWidget beside other Layouts. When I´m trying to do so, it´s getting the only Layout on the surface as if no other one´s would have been implemented.

Here´s my code :

python 
def createLayout(self):

    ############ LayoutTests #############################

    HLayout1 = QtWidgets.QHBoxLayout()
    VLayout1 = QtWidgets.QVBoxLayout()
    VLayout2 = QtWidgets.QVBoxLayout()
    VLayout3 = QtWidgets.QVBoxLayout()
    VLayout4 = QtWidgets.QVBoxLayout()
    VLayout5 = QtWidgets.QVBoxLayout()
    HLayout2 = QtWidgets.QHBoxLayout()

    GridLayout = QtWidgets.QGridLayout()
    StackedLayout = QtWidgets.QStackedLayout()
    TabWidget = QtWidgets.QTabWidget()

    VLayout1.addWidget(Color("black"))
    VLayout1.addWidget(Color("red"))
    VLayout1.addWidget(Color("yellow"))

    VLayout1.setContentsMargins(0,0,20,0)
    VLayout1.setSpacing(20)

    HLayout1.addLayout(VLayout1)

    HLayout1.addWidget(Color("green"))


    VLayout2.addWidget(Color("blue"))
    VLayout2.addWidget(Color("purple"))

    HLayout1.addLayout(VLayout2)


    GridLayout.addWidget(Color("Grey"), 0, 3)
    GridLayout.addWidget(Color("black"), 1, 0)
    GridLayout.addWidget(Color("DarkGrey"), 1, 1)
    GridLayout.addWidget(Color("orange"), 2, 1)

    HLayout1.addLayout(GridLayout)


    TabWidget.setDocumentMode(False)
    TabWidget.setTabPosition(QtWidgets.QTabWidget.North)
    TabWidget.setMovable(True)

    Tab1 = QtWidgets.QWidget()
    Tab2 = QtWidgets.QWidget()

    TabWidget.addTab(Tab1, "Tab1")
    TabWidget.addTab(Tab2, "Tab2")

    VLayout3.addWidget(TabWidget)

    **# here´s the Problem beginning, whenever I want to integrate the VLayout3 **
   ** # into the HLayout1 it´s getting the one and only **

    ** #HLayout1.addLayout(VLayout3) **

    Widget = QtWidgets.QWidget()
    Widget.setLayout(HLayout1)
    self.setCentralWidget(Widget)

This is the Layout before and after : vorher_nachher|690x188

When activating again the Line "HLayout1.addLayout(VLayout3) " it´s getting the only one that´s visible.

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I don´t understand why it´s getting dominant as the only one. Isn´t it possible to have a QTabWidget in a Layout besides other Layouts ?

Nudlwoodz7756 | 2020-11-16 09:35:58 UTC | #2

I´ll answer it for myself ;)

I managed to get it running.

Obvisously it´s just possible to add a QTabWidget inside a GroupBox. So, GroupBoxes besides GroupBoxes where the QTabWindow is inside is possible. Without the GroupBoxes it´s becoming dominant like a Borg.

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Can´t integrate QTabWidget into a Layout besides other one´s was written by Martin Fitzpatrick .

Martin Fitzpatrick has been developing Python/Qt apps for 8 years. Building desktop applications to make data-analysis tools more user-friendly, Python was the obvious choice. Starting with Tk, later moving to wxWidgets and finally adopting PyQt.

Can´t integrate QTabWidget into a Layout besides other one´s was published in faq on (updated ) . Feedback & Corrections welcome in our public issue tracker.

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