QComboBox can't set margins with setContentsMargins()

JesusM97

Hello, I have a window with a QVBoxLayout and inside it I have some QHBoxLayout to set my widgets. All the widgets on the left have a Qt.AlignRight and all the widgets on the right have a Qt.AlignLeft so they are centered. Then I added some margins to separate a bit right widgets from left widgets. To do that I use setContentMargins() but for the QComboBox it doesn't work.

            #Here I create the first QLabel and the QLineEdit
            hlayout = QHBoxLayout()
            self.ensayoLabel = QLabel("Nombre del ensayo")
            self.nombreEnsayoInput = QLineEdit("")
            self.nombreEnsayoInput.setFixedSize(150, 25)
            #I set some left margin to the QLineEdit so it is a bit separated from the QLabel
            self.nombreEnsayoInput.setContentsMargins(10, 0, 0, 0)
            hlayout.addWidget(self.ensayoLabel)
            hlayout.addWidget(self.nombreEnsayoInput)
            hlayout.setAlignment(self.ensayoLabel, Qt.AlignRight)
            hlayout.setAlignment(self.nombreEnsayoInput, Qt.AlignLeft)

            layout.addLayout(hlayout) #This is the vertical layout of the window
           .
           .
           .
           .

            #Here I create a QCheckBox and a QComboBox
            h4layout = QHBoxLayout()
            self.rotacionArenaCheckBox = QCheckBox("Rotar arena")
            self.rotacionArenaCheckBox.stateChanged.connect(lambda: self.rotacionArenaCheckboxChanged())
            self.direccionRotacionArenaCombobox = QComboBox()
            self.direccionRotacionArenaCombobox.addItem("Ateatorio")
            self.direccionRotacionArenaCombobox.addItem("Norte")
            self.direccionRotacionArenaCombobox.addItem("Sur")
            self.direccionRotacionArenaCombobox.addItem("Este")
            self.direccionRotacionArenaCombobox.addItem("Oeste")
            #I add some left margin to the QComboBox to separate it a bit from the QCheckBox,  but it doesn't work
            self.direccionRotacionArenaCombobox.setContentsMargins(10, 0, 0, 0)
            self.direccionRotacionArenaCombobox.setEnabled(False)
            h4layout.addWidget(self.rotacionArenaCheckBox)
            h4layout.addWidget(self.direccionRotacionArenaCombobox)
            h4layout.setAlignment(self.rotacionArenaCheckBox, Qt.AlignRight)
            h4layout.setAlignment(self.direccionRotacionArenaCombobox, Qt.AlignLeft)

What is happening?

SGaist

Hi,

From the looks of it, you could simplify your code using QFormLayout.

JoeCFD

The first 4 rows can be laid out with grid layout. Then align widgets in the first column to the right and the widgets in the second column to the left.

JesusM97

@SGaist said in QComboBox can't set margins with setContentsMargins():

Hi,

From the looks of it, you could simplify your code using QFormLayout.

@JoeCFD said in QComboBox can't set margins with setContentsMargins():

The first 4 rows can be laid out with grid layout. Then align widgets in the first column to the right and the widgets in the second column to the left.

Hello, thanks for yous answers, I will try both solution and let you know the results.

JesusM97

After some tries, using QGridLayout for the first 4 rows and QHBoxLayout for the rest is the best solution as I need multiple columns in some rows. I get this result but now I want to add some vertical space between grids to separate them a bit. setContentMargins() does not work neither in QGridLayout. What can I use?

Thanks