CODEWITHSUNDEEP
pythonpyqtpyqt5qlayout
user6456568
user6456568

Reputation: 599

How to make layout automatically fill window size

I have a problem that the layout cannot automatically fill the window when the window changes its size. So how to make this layout to fill the window whenever the windows resizes?

from PyQt5 import QtCore, QtGui, QtWidgets

class Ui_MainWindow(object):
    def setupUi(self, MainWindow):
        MainWindow.setObjectName("MainWindow")
        MainWindow.resize(200,40)
        self.centralwidget = QtWidgets.QWidget(MainWindow)
        self.horizontalLayoutWidget = QtWidgets.QWidget(self.centralwidget)
        self.horizontalLayout = QtWidgets.QHBoxLayout(self.horizontalLayoutWidget)
        self.horizontalLayout.setContentsMargins(0, 0, 0, 0)
        self.label = QtWidgets.QLabel(self.horizontalLayoutWidget)
        self.label.setText("LABEL")
        self.horizontalLayout.addWidget(self.label)
        self.lineEdit = QtWidgets.QLineEdit(self.horizontalLayoutWidget)
        self.horizontalLayout.addWidget(self.lineEdit)

        MainWindow.setCentralWidget(self.centralwidget)
        QtCore.QMetaObject.connectSlotsByName(MainWindow)


if __name__ == "__main__":
    import sys
    app = QtWidgets.QApplication(sys.argv)
    MainWindow = QtWidgets.QMainWindow()
    ui = Ui_MainWindow()
    ui.setupUi(MainWindow)
    MainWindow.show()
    sys.exit(app.exec_())

enter image description here

enter image description here

I want the line always to fill the width of window.

Upvotes: 1

Views: 6381

Answers (1)

eyllanesc
eyllanesc

Reputation: 243907

You do not have to create a new widget, you have to use the layouts properly, first place the QLabel with the QLineEdit inside a QHBoxLayout. then we put the layout with a QSpacerItem in a QVBoxLayout as I show below:

class Ui_MainWindow(object):
    def setupUi(self, MainWindow):
        MainWindow.setObjectName("MainWindow")
        MainWindow.resize(200,40)
        self.centralwidget = QtWidgets.QWidget(MainWindow)
        self.vlayout = QtWidgets.QVBoxLayout(self.centralwidget)

        self.horizontalLayout = QtWidgets.QHBoxLayout()
        self.horizontalLayout.setContentsMargins(0, 0, 0, 0)
        self.label = QtWidgets.QLabel(self.centralwidget)
        self.label.setText("LABEL")
        self.horizontalLayout.addWidget(self.label)
        self.lineEdit = QtWidgets.QLineEdit(self.centralwidget)
        self.horizontalLayout.addWidget(self.lineEdit)
        self.vlayout.addLayout(self.horizontalLayout)
        spacerItem = QtWidgets.QSpacerItem(20, 245, QtWidgets.QSizePolicy.Minimum, QtWidgets.QSizePolicy.Expanding)
        self.vlayout.addItem(spacerItem)

        MainWindow.setCentralWidget(self.centralwidget)
        QtCore.QMetaObject.connectSlotsByName(MainWindow)

Another option is to use QFormLayout:

class Ui_MainWindow(object):
    def setupUi(self, MainWindow):
        MainWindow.setObjectName("MainWindow")
        MainWindow.resize(200,40)
        self.centralwidget = QtWidgets.QWidget(MainWindow)
        flayout = QtWidgets.QFormLayout(self.centralwidget)
        self.lineEdit = QtWidgets.QLineEdit(self.centralwidget)
        flayout.addRow("LABEL", self.lineEdit)
        MainWindow.setCentralWidget(self.centralwidget)
        QtCore.QMetaObject.connectSlotsByName(MainWindow)

Upvotes: 1

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