How to reduce the space between Two Widgets in PyQt5 QGridLayout?

Question

How to arrange Widgets in QGridLayout as desired? For example, In My code,

1. I need to reduce the space between the " Country" and "State" Button

2. Place the Widgets in top left most Corner ( Country Button in Top left Most Corner- No Margins)

3. reduce the space between "country" and "District" Buttons

4. Place the "bank" Button to the centre of the "Town" Button

5. need/arrange layout as per attached image

import sys
from PyQt5.QtGui import *
from PyQt5.QtWidgets import *
from PyQt5.QtCore import *

class GridLayout_Example(QWidget):
    def __init__(self):
        super().__init__()
        self.setWindowTitle("Grid layout Example")
        self.setGeometry(100,100,1600,600)
        self.initUI()
        self.layout()
        self.show()

    def initUI(self):
        self.btn_country_63 = QPushButton()
        self.btn_country_63.setText("Country")
        self.btn_country_63.setObjectName("ob_btn_country_63")
        self.btn_country_63.setProperty('group', "1")
        self.btn_country_63.setFixedSize(100, 25)
        self.btn_country_63.setStyleSheet("background-color:red;color:white")
        self.btn_country_63.installEventFilter(self)
        # self.btn_country_63.clicked.connect(self.btn_country_63_select)

        self.btn_state_63 = QPushButton()
        self.btn_state_63.setText("State")
        self.btn_state_63.setObjectName("ob_btn_state_63")
        self.btn_state_63.setProperty('group', "1")
        self.btn_state_63.setFixedSize(100, 25)
        self.btn_state_63.setStyleSheet("background-color:red;color:white")
        self.btn_state_63.installEventFilter(self)
        # self.btn_state_63.clicked.connect(self.btn_state_63_select)

        self.btn_district_63 = QPushButton()
        self.btn_district_63.setText("District")
        self.btn_district_63.setObjectName("ob_btn_district_63")
        self.btn_district_63.setProperty('group', "1")
        self.btn_district_63.setFixedSize(100, 25)
        self.btn_district_63.setStyleSheet("background-color:red;color:white")
        self.btn_district_63.installEventFilter(self)
        # self.btn_district_63.clicked.connect(self.btn_district_63_select)

        self.btn_town_63 = QPushButton()
        self.btn_town_63.setText("Town")
        self.btn_town_63.setObjectName("ob_btn_town_63")
        self.btn_town_63.setProperty('group', "1")
        self.btn_town_63.installEventFilter(self)
        self.btn_town_63.setFixedSize(60, 80)
        self.btn_town_63.setStyleSheet("background-color:red;color:white")
        # self.btn_town_63.clicked.connect(self.btn_town_63_select)

        self.btn_bank_63 = QPushButton()
        self.btn_bank_63.setText("Bank")
        self.btn_bank_63.setObjectName("ob_btn_bank_63")
        self.btn_bank_63.setProperty('group', "1")
        self.btn_bank_63.installEventFilter(self)
        self.btn_bank_63.setFixedSize(100, 25)
        # self.btn_bank_63.clicked.connect(self.btn_bank_63_select)

    def layout(self):

        self.layout_main_toppannel_2_right = QGridLayout()
        self.frame_main_toppannel_2_right = QFrame()
        self.frame_main_toppannel_2_right.setProperty('color', "2")
        self.frame_main_toppannel_2_right.setFixedHeight(100)
        self.frame_main_toppannel_2_right.setStyleSheet("background-color: lightgreen")
        self.layout_main_toppannel_2_right = QGridLayout(self.frame_main_toppannel_2_right)

        self.container63 = QWidget()
        self.container63_box = QGridLayout(self.container63)
        self.container63_box.addWidget(self.btn_country_63, 0, 0, Qt.AlignTop)
        self.container63_box.addWidget(self.btn_district_63, 0, 1, Qt.AlignTop)
        self.container63_box.addWidget(self.btn_state_63, 1, 0, Qt.AlignTop)
        self.container63_box.addWidget(self.btn_town_63, 0, 3)
        self.container63_box.addWidget(self.btn_bank_63,0,4)
        self.container63_box.setColumnStretch(0,4)
        self.container63_box.setRowStretch(0,2)

      
        self.stackitem = QStackedWidget()
        self.stackitem.addWidget(self.container63)
        self.layout_main_toppannel_2_right.addWidget(self.stackitem)

        self.main_layout = QHBoxLayout()
        self.main_layout.addWidget(self.frame_main_toppannel_2_right)
        self.setLayout(self.main_layout)

def main():
    app = QApplication(sys.argv)
    mainwindow = GridLayout_Example()
    mainwindow.show()
    sys.exit(app.exec_())
if __name__ == "__main__":
    main()

Answer 1

In a previous post I explained in detail the operation of the QGridLayout so in this post I will only detail the most outstanding.

• To remove the space between the items you must use setSpacing(0) (you can also use setHorizontalSpacing(0) and setVerticalSpacing(0)).

• To make the elements be pushed to the left you can set a stretch to the imaginary fifth column.

• I have also modified the height of "Town" since it does not match the sum height of the 3 elements, forcing spaces to appear.

• I also calculated the height of the green container after setting the items to match the space needed and there are no spaces.

• Finally note that some margins cannot be changed by code since they are implemented by the native QStyles of the OS, to avoid that I impose that the style fusion be used.

import sys
from PyQt5.QtGui import *
from PyQt5.QtWidgets import *
from PyQt5.QtCore import *


class GridLayout_Example(QWidget):
    def __init__(self, parent=None):
        super().__init__(parent)
        self.build_widgets()
        self.build_layout()

        self.resize(640, 480)

    def build_widgets(self):
        self.btn_country_63 = QPushButton(
            text="Country", styleSheet="background-color:red;color:white"
        )
        self.btn_country_63.setFixedSize(100, 25)

        self.btn_state_63 = QPushButton(
            text="State", styleSheet="background-color:red;color:white"
        )
        self.btn_state_63.setFixedSize(100, 25)

        self.btn_district_63 = QPushButton(
            text="District", styleSheet="background-color:red;color:white"
        )
        self.btn_district_63.setFixedSize(100, 25)

        self.btn_town_63 = QPushButton(
            text="Town", styleSheet="background-color:red;color:white"
        )
        self.btn_town_63.setFixedSize(60, 75)

        self.btn_bank_63 = QPushButton(
            text="Bank", styleSheet="background-color:red;color:white"
        )
        self.btn_bank_63.setFixedSize(100, 25)

        self.btn_zip_63 = QPushButton(
            text="Zip Code", styleSheet="background-color:red;color:white"
        )
        self.btn_zip_63.setFixedSize(100, 25)

    def build_layout(self):
        self.container = QFrame()
        self.container.setStyleSheet("background-color: lightgreen")

        grid_layout = QGridLayout(self.container)
        grid_layout.addWidget(self.btn_country_63, 0, 0, 1, 1)
        grid_layout.addWidget(self.btn_state_63, 1, 0, 1, 1)
        grid_layout.addWidget(self.btn_district_63, 0, 1, 1, 1)
        grid_layout.addWidget(self.btn_town_63, 0, 2, 3, 1)
        grid_layout.addWidget(self.btn_bank_63, 1, 3, 1, 1)
        grid_layout.addWidget(self.btn_zip_63, 2, 4, 1, 1)
        grid_layout.setColumnStretch(5, 1)
        grid_layout.setSpacing(0)
        grid_layout.setContentsMargins(0, 0, 0, 0)

        lay = QVBoxLayout(self)
        lay.addWidget(self.container)
        self.container.setFixedHeight(self.container.sizeHint().height())


def main():
    app = QApplication(sys.argv)
    print("default-style: ", app.style().metaObject().className())
    app.setStyle("fusion")
    mainwindow = GridLayout_Example()
    mainwindow.show()
    sys.exit(app.exec_())


if __name__ == "__main__":
    main()