Develop Reference

PySide6 Layout add space between items

I am using the QVBoxLayout from PySide6 to organize some items.
I now want to add some more space between the "Search" button and the "Modbus Data" group box.
They are all located inside the same QVBoxLaxout.
Here is the code which creates the displayed UI.
def setup_ui(self):
v_layout_base = QVBoxLayout(self)
h_layout_com_list = QHBoxLayout(self)
h_layout_com_list.addWidget(QLabel("Modbus COM"))
self.lw_com = QListWidget(self)
h_layout_com_list.addWidget(self.lw_com)
h_layout_search = QHBoxLayout(self)
self.button_search_com = QPushButton("Search")
h_layout_search.addWidget(self.button_search_com)
group_box = QGroupBox(QTranslator.tr("Modbus data"))
v_layout_modbus_data = QVBoxLayout(self)
h_layout_baudrate = QHBoxLayout(self)
h_layout_baudrate.addWidget(QLabel("Baudrate"))
self.cB_baudrate = QComboBox()
h_layout_baudrate.addWidget(self.cB_baudrate)
h_layout_bytesize = QHBoxLayout(self)
h_layout_bytesize.addWidget(QLabel("Bytesize"))
self.cB_bytesize = QComboBox()
h_layout_bytesize.addWidget(self.cB_bytesize)
h_layout_parity = QHBoxLayout(self)
h_layout_parity.addWidget(QLabel("Parity"))
self.cB_parity = QComboBox()
h_layout_parity.addWidget(self.cB_parity)
h_layout_stop_bit = QHBoxLayout(self)
h_layout_stop_bit.addWidget(QLabel("Stop bit"))
self.cB_stop_bit = QComboBox()
h_layout_stop_bit.addWidget(self.cB_stop_bit)
h_layout_connect = QHBoxLayout(self)
self.pb_connect = QPushButton("Connect")
self.pb_com_search = QPushButton("Disconnect")
h_layout_connect.addWidget(self.pb_connect)
h_layout_connect.addWidget(self.pb_com_search)
h_layout_com_label = QHBoxLayout(self)
h_layout_com_label.addWidget(QLabel("COM:"))
self.button_com_connect_label = QLabel("No COM selected")
h_layout_com_label.addWidget(self.button_com_connect_label)
h_layout_modbus_label = QHBoxLayout(self)
h_layout_modbus_label.addWidget(QLabel("Modbus:"))
self.button_modbus_connect_label = QLabel("Not connected to Modbus")
h_layout_modbus_label.addWidget(self.button_modbus_connect_label)
v_layout_base.addLayout(h_layout_com_list)
v_layout_base.addLayout(h_layout_search, 100)
v_layout_modbus_data.addLayout(h_layout_baudrate)
v_layout_modbus_data.addLayout(h_layout_bytesize)
v_layout_modbus_data.addLayout(h_layout_parity)
v_layout_modbus_data.addLayout(h_layout_stop_bit)
group_box.setLayout(v_layout_modbus_data)
v_layout_base.addWidget(group_box)
v_layout_base.addLayout(h_layout_connect)
v_layout_base.addLayout(h_layout_com_label)
v_layout_base.addLayout(h_layout_modbus_label)

PyQt accessing Label and LineEdit that are dynamically created

I am trying to access dynamically created Labels and LineEdit to change their texts.
I have no idea how is that possible ?
As an example, when Start button is clicked it should change the text of PS1 QLineEdit from XXXX to YYYY .
from PyQt5 import QtCore, QtGui, QtWidgets
class MainWindow(QtWidgets.QMainWindow):
def __init__(self, parent=None):
super().__init__(parent)
self.setWindowTitle("BiPolar Power Supply Testing")
widget_map = {}
tab_widget = QtWidgets.QTabWidget()
self.setCentralWidget(tab_widget)
pstest_widget = QtWidgets.QWidget()
tab_widget.addTab(pstest_widget, "PS Tests")
pstest_vlay = QtWidgets.QVBoxLayout()
for i in range(1, 9):
title = "PS{}".format(i)
group_box = MainWindow.create_pstest_element(title)
pstest_vlay.addWidget(group_box)
self.PSFStart_btn = QtWidgets.QPushButton("Start")
self.PSFStop_btn = QtWidgets.QPushButton("Stop")
pstest_vlay.addWidget(self.PSFStart_btn)
pstest_vlay.addWidget(self.PSFStop_btn)
pstest_vlay.addStretch()
grid_lay_1 = QtWidgets.QGridLayout(pstest_widget)
#grid_lay_1.addWidget(pstest_widget)
grid_lay_1.addLayout(pstest_vlay, 0, 0)
#staticmethod
def create_pstest_element(title):
group_box = QtWidgets.QGroupBox(title)
grid = QtWidgets.QGridLayout()
serial_label = QtWidgets.QLabel("Serial No:")
serial_lineedit = QtWidgets.QLineEdit("XXXX")
grid.addWidget(serial_label, 0, 0)
grid.addWidget(serial_lineedit, 0, 1)
group_box.setLayout(grid)
return group_box
if __name__ == "__main__":
import sys
app = QtWidgets.QApplication(sys.argv)
w = MainWindow()
w.show()
sys.exit(app.exec_())
Here is how the GUI looks like:

The current design makes it difficult to access the widgets since you do not save access to the elements (you could use a filter using findChildren but that method is not scalable or elegant.).
In these cases it is better than creating a class that inherits from QGroupBox by making internal elements such as the QLabel and QLineEdit class members. On the other hand, having many QGroupBox, it is best to use a container that allows us to access each element by means of an index or key, in this one a list is enough.
class GroupBox(QtWidgets.QGroupBox):
def __init__(self, title, parent=None):
super().__init__(title, parent)
grid = QtWidgets.QGridLayout()
self.serial_label = QtWidgets.QLabel("Serial No:")
self.serial_lineedit = QtWidgets.QLineEdit("XXXX")
grid.addWidget(self.serial_label, 0, 0)
grid.addWidget(self.serial_lineedit, 0, 1)
self.setLayout(grid)
class MainWindow(QtWidgets.QMainWindow):
def __init__(self, parent=None):
super().__init__(parent)
self.setWindowTitle("BiPolar Power Supply Testing")
tab_widget = QtWidgets.QTabWidget()
self.setCentralWidget(tab_widget)
pstest_widget = QtWidgets.QWidget()
tab_widget.addTab(pstest_widget, "PS Tests")
pstest_vlay = QtWidgets.QVBoxLayout()
self.group_boxes = []
for i in range(1, 9):
title = "PS{}".format(i)
group_box = GroupBox(title)
pstest_vlay.addWidget(group_box)
self.group_boxes.append(group_box)
self.PSFStart_btn = QtWidgets.QPushButton("Start")
self.PSFStop_btn = QtWidgets.QPushButton("Stop")
pstest_vlay.addWidget(self.PSFStart_btn)
pstest_vlay.addWidget(self.PSFStop_btn)
pstest_vlay.addStretch()
grid_lay_1 = QtWidgets.QGridLayout(pstest_widget)
# grid_lay_1.addWidget(pstest_widget)
grid_lay_1.addLayout(pstest_vlay, 0, 0)
self.PSFStart_btn.clicked.connect(self.on_start_clicked)
#QtCore.pyqtSlot()
def on_start_clicked(self):
group_box = self.group_boxes[0]
group_box.serial_lineedit.setText("YYYY")

how to properly remove qwidgets and update/reload that widget

Trying to remove a qwidget and replace it with another qwidget and then reload the layout the qwidget is a part of
I've already tried the update and removeWidget method, though i could've used it improperly
from PyQt5.Qt import *
import sys
validUser = False
app = None
class App(QMainWindow):
def __init__(self):
super().__init__()
screen = app.primaryScreen().size()
self.title = 'Restaurant Application'
width = screen.width()
height = screen.height()
self.left = 0
self.top = 0
self.width = width
self.height = height
self.setMouseTracking(True)
self.table_widget = MyTableWidget(self)
self.setCentralWidget(self.table_widget)
self.initUI()
self.show()
def initUI(self):
# window
self.setWindowTitle(self.title)
self.setGeometry(self.left, self.top, self.width, self.height)
# statusbar
self.statusBar().showMessage('Welcome to el restaurante')
def mousePressEvent(self, event):
print('Mouse coords: ( %d : %d )' % (event.x(), event.y()))
class MyTableWidget(QWidget):
def __init__(self, parent):
super(QWidget, self).__init__(parent)
self.layout = QVBoxLayout(self)
# Initialize tab screen
self.tabs = QTabWidget()
self.login = QWidget()
self.menu = QWidget()
self.checkOut = QWidget()
self.tabs.resize(500, 200)
# Add tabs
self.tabs.addTab(self.login, "Login")
self.tabs.addTab(self.menu, "Menu")
self.tabs.addTab(self.checkOut, "Check out")
# Create login tab
self.login.layout = QVBoxLayout(self)
self.menu.layout = QVBoxLayout(self)
# login text
self.loginPrompt = QLabel("Please provide a valid login")
self.loginPrompt.setFixedSize(315,30)
self.loginPromptFont = QFont("Times", 27, QFont.Bold)
self.loginPrompt.setFont(self.loginPromptFont)
self.login.layout.addWidget(self.loginPrompt)
self.login.setLayout(self.login.layout)
# Create textbox
self.loginTextbox = QLineEdit(self)
self.loginTextbox.returnPressed.connect(self.on_click_login)
self.loginTextbox.setFixedSize(170,20)
# Create a button in the window
self.loginButton = QPushButton('Login button', self)
self.loginButton.clicked.connect(self.on_click_login)
self.loginButton.setFixedSize(100,40)
self.login.layout.addWidget(self.loginTextbox,alignment=Qt.AlignCenter)
self.login.layout.addWidget(self.loginButton,alignment=Qt.AlignCenter)
#widget code i use to decide which widget to add
self.menuInvalidUserLogin = QLabel("Please login in to view")
self.menuValidUserLogin = QLabel("Here's the menu")
if(validUser):
self.menu.layout.addWidget(self.menuValidUserLogin)
else:
self.menu.layout.addWidget(self.menuInvalidUserLogin)
self.menu.setLayout(self.menu.layout)
# Add tabs to widget
self.layout.addWidget(self.tabs)
self.setLayout(self.layout)
def on_click_login(self):
global validUser
global app
textboxValue = self.loginTextbox.text()
if(textboxValue.lower() == 'pass'):
validUser=True
#the solutions i have been trying
self.menu.layout.removeWidget(self.menuInvalidUserLogin)
self.layout.removeWidget(self.menuInvalidUserLogin)
self.menu.layout.update()
QMessageBox.question(self, 'Response', "Login successful: Welcome", QMessageBox.Ok,QMessageBox.Ok)
else:
validUser=False
QMessageBox.question(self, 'Response', "Login unsuccessful: EXPLAIN YOURSELF", QMessageBox.Ok,QMessageBox.Ok)
self.loginTextbox.setText("")
app = QApplication(sys.argv)
ex = App()
sys.exit(app.exec_())
expected results should be that the old widget is removed, new widget is added and then the layout those widgets are a part of is refreshed

Is this what you were expecting?
Also, is there a specific reason why you are using global variables in your class? It is bad practice, you should make them class members.
from PyQt5 import QtWidgets, QtCore, QtGui
import sys
class App(QtWidgets.QMainWindow):
def __init__(self):
super(App,self).__init__()
app = QtWidgets.QApplication.instance()
screen = app.primaryScreen().size()
self.title = 'Restaurant Application'
width = screen.width()
height = screen.height()
self.left = 0
self.top = 0
self.width = width
self.height = height
self.setMouseTracking(True)
self.table_widget = MyTableWidget(self)
self.setCentralWidget(self.table_widget)
self.initUI()
self.show()
def initUI(self):
# window
self.setWindowTitle(self.title)
self.setGeometry(self.left, self.top, self.width, self.height)
# statusbar
self.statusBar().showMessage('Welcome to el restaurante')
def mousePressEvent(self, event):
print('Mouse coords: ( %d : %d )' % (event.x(), event.y()))
class MyTableWidget(QtWidgets.QWidget):
def __init__(self, parent):
super(MyTableWidget, self).__init__(parent)
self.layout = QtWidgets.QVBoxLayout()
self.validUser = False
# Initialize tab screen
self.tabs = QtWidgets.QTabWidget()
self.login = QtWidgets.QWidget()
self.menu = QtWidgets.QWidget()
self.checkOut = QtWidgets.QWidget()
self.tabs.resize(500, 200)
# Add tabs
self.tabs.addTab(self.login, "Login")
self.tabs.addTab(self.menu, "Menu")
self.tabs.addTab(self.checkOut, "Check out")
# Create login tab
self.login.layout = QtWidgets.QVBoxLayout()
self.menu.layout = QtWidgets.QVBoxLayout()
# login text
self.loginPrompt = QtWidgets.QLabel("Please provide a valid login")
self.loginPrompt.setFixedSize(315,30)
self.loginPromptFont = QtGui.QFont("Times", 27, QtGui.QFont.Bold)
self.loginPrompt.setFont(self.loginPromptFont)
self.login.layout.addWidget(self.loginPrompt)
self.login.setLayout(self.login.layout)
# Create textbox
self.loginTextbox = QtWidgets.QLineEdit()
self.loginTextbox.returnPressed.connect(self.on_click_login)
self.loginTextbox.setFixedSize(170,20)
# Create a button in the window
self.loginButton = QtWidgets.QPushButton('Login button')
self.loginButton.clicked.connect(self.on_click_login)
self.loginButton.setFixedSize(100,40)
self.login.layout.addWidget(self.loginTextbox,alignment=QtCore.Qt.AlignCenter)
self.login.layout.addWidget(self.loginButton,alignment=QtCore.Qt.AlignCenter)
#widget code i use to decide which widget to add
self.menuInvalidUserLogin = QtWidgets.QLabel("Please login in to view")
self.menuValidUserLogin = QtWidgets.QLabel("Here's the menu")
if(self.validUser):
self.menu.layout.addWidget(self.menuValidUserLogin)
else:
self.menu.layout.addWidget(self.menuInvalidUserLogin)
self.menu.setLayout(self.menu.layout)
# Add tabs to widget
self.layout.addWidget(self.tabs)
self.setLayout(self.layout)
def on_click_login(self):
textboxValue = self.loginTextbox.text()
if(textboxValue.lower() == 'pass'):
self.validUser=True
for i in reversed(range(self.menu.layout.count())):
widgetToRemove = self.menu.layout.itemAt(i).widget()
self.menu.layout.removeWidget(widgetToRemove)
widgetToRemove.deleteLater()
self.menu.layout.addWidget(self.menuValidUserLogin)
QtWidgets.QMessageBox.question(self, 'Response', "Login successful: Welcome", QtWidgets.QMessageBox.Ok,QtWidgets.QMessageBox.Ok)
self.tabs.setCurrentIndex(1)
else:
self.validUser=False
QtWidgets.QMessageBox.question(self, 'Response', "Login unsuccessful: EXPLAIN YOURSELF", QtWidgets.QMessageBox.Ok,QtWidgets.QMessageBox.Ok)
self.loginTextbox.setText("")
def main():
app = QtWidgets.QApplication(sys.argv)
ex = App()
sys.exit(app.exec_())
if __name__ == "__main__":
main()

AttributeError: 'Settings' object has no attribute 'scene'

I need to add pixmap to my rectangles. When I press the click button then my pixmap will be added to one by one in my rectangles but I got this attribute error. Can any one please guide me how to solve this error? I tried so many ways but I didn't get the proper output.
Thank you in advance.
Given below is my code:
from pyface.qt import QtGui, QtCore
import sys
global X,Y
class ScanView(QtGui.QGraphicsView):
def __init__(self,X=5, Y=5, parent=None):
super(ScanView, self).__init__(parent)
self.row = X
self.cols = Y
self.squareLB = 50
self.width = Y*self.squareLB+2*self.squareLB
self.height = X*self.squareLB+2*self.squareLB
self.List = []
if self.width>708:
self.scene = QtGui.QGraphicsScene(0,0,self.width,self.height)
for i in range(self.row):
for j in range(self.cols):
item = self.scene.addRect(QtCore.QRectF(0,0,self.squareLB,self.squareLB))
item.setPos(self.squareLB+j*self.squareLB, X*self.squareLB-(i*self.squareLB))
self.List.append(item)
else:
self.scene = QtGui.QGraphicsScene(0,0,708,self.height)
self.marginLR = (708.0-Y*self.squareLB)/2.0
for i in range(self.row):
for j in range(self.cols):
item = self.scene.addRect(QtCore.QRectF(0,0,self.squareLB,self.squareLB))
item.setPos(self.marginLR+j*self.squareLB, X*self.squareLB-(i*self.squareLB))
self.List.append(item)
self.setScene(self.scene)
class Settings(QtGui.QMainWindow):
def __init__(self, parent=None):
super(Settings, self).__init__(parent)
spacer = QtGui.QWidget(self)
spacer.setSizePolicy(QtGui.QSizePolicy.Expanding, QtGui.QSizePolicy.Expanding)
QtGui.QToolTip.setFont(QtGui.QFont('SansSerif', 10))
self.vbox = QtGui.QVBoxLayout()
self.save = QtGui.QPushButton("save")
self.open= QtGui.QPushButton("open")
self.folder= QtGui.QPushButton("Folder")
self.folder.clicked.connect(self.showSettings)
self.vbox.addWidget(self.save)
self.vbox.addWidget(self.open)
self.vbox.addWidget(self.folder)
self.grid = QtGui.QGridLayout()
self.grid.addLayout(self.vbox,0,0)
self.scrollArea = QtGui.QScrollArea()
self.scrollArea.setBackgroundRole(QtGui.QPalette.Light)
self.scrollArea.setWidgetResizable(True)
self.grid.addWidget(self.scrollArea,0,1)
self.setCentralWidget(QtGui.QWidget(self))
self.centralWidget().setLayout(self.grid)
self.setGeometry(200,100,300,300)
self.show()
def showSettings(self):
self.MyView = ScanView(5,5)
self.vbox2 = QtGui.QVBoxLayout()
self.Scanbtn1 = QtGui.QPushButton(("click"))
self.Scanbtn1.clicked.connect(self.on_clicked)
self.vbox2.addWidget(self.Scanbtn1)
self.newwidget = QtGui.QWidget()
self.glayout = QtGui.QGridLayout(self.newwidget)
self.glayout.addWidget(self.MyView,0,0)
self.Sw = QtGui.QWidget()
self.Sw.setLayout(self.vbox2)
# self.Sw.setFixedWidth(width - self.scrollArea.viewport().width())
self.glayout.addWidget(self.Sw,0,1)
self.scrollArea.setWidget(self.newwidget)
def on_clicked(self):
print "hellloooooo"
filename1 = "./img/tick.png"
pixmap = QtGui.QPixmap(filename1)
if not pixmap.isNull():
self.MyView.add_pixmap(pixmap)
# pic = QtGui.QPixmap("./img/tick.png")
# scene.addItem(QtGui.QGraphicsPixmapItem(pic))
# # view = self.gv
# self.MyView.setScene(scene)
# self.MyView.setRenderHint(QtGui.QPainter.Antialiasing)
# self.MyView.show()
def main():
app = QtGui.QApplication(sys.argv)
ex = Settings()
sys.exit(app.exec_())
if __name__ == '__main__':
main()

You have that error because scene does not exist in the Settings class, self.scene is a member of the ScanView class plus self.scene is different from scene.
Going to the problem, you must add as a child of the rectangles and you must also change the size of the pixmap is necessary. To obtain the first rectangle you must store it in a list and then create an iterator.
import sys
from pyface.qt import QtGui, QtCore
class ScanView(QtGui.QGraphicsView):
def __init__(self,X=5, Y=5, parent=None):
super(ScanView, self).__init__(parent)
self._squares = []
n_rows, n_cols = X, Y
squareLB = 50
width, height = (Y + 2)*squareLB, (X + 2)*squareLB
self._scene = QtGui.QGraphicsScene(0, 0, max(708, width), height)
p = squareLB if width > 708 else (708.0-Y*squareLB)/2.0
for i in range(n_rows):
for j in range(n_cols):
it = self._scene.addRect(0, 0, squareLB, squareLB)
it.setPos(p + j*squareLB, i*squareLB)
self._squares.append(it)
self.setScene(self._scene)
class Settings(QtGui.QMainWindow):
def __init__(self, parent=None):
super(Settings, self).__init__(parent)
self.save = QtGui.QPushButton("save")
self.open = QtGui.QPushButton("open")
self.folder = QtGui.QPushButton("Folder", clicked=self.showSettings)
central_widget = QtGui.QWidget()
self.setCentralWidget(central_widget)
vbox = QtGui.QVBoxLayout()
vbox.addWidget(self.save)
vbox.addWidget(self.open)
vbox.addWidget(self.folder)
self.scrollArea = QtGui.QScrollArea(widgetResizable=True)
self.scrollArea.setBackgroundRole(QtGui.QPalette.Light)
hlay = QtGui.QHBoxLayout(central_widget)
hlay.addLayout(vbox)
hlay.addWidget(self.scrollArea)
self.setGeometry(200, 100, 300, 300)
def showSettings(self):
self.view = ScanView(5, 5)
self.scanbtn = QtGui.QPushButton("click", clicked=self.on_clicked)
self.newwidget = QtGui.QWidget()
hlay = QtGui.QHBoxLayout(self.newwidget)
hlay.addWidget(self.view)
hlay.addWidget(self.scanbtn)
self.scrollArea.setWidget(self.newwidget)
self._iter_squares = iter(self.view._squares)
def on_clicked(self):
filename = "./img/tick.png"
pixmap = QtGui.QPixmap(filename)
if pixmap.isNull():
return
try:
it = next(self._iter_squares)
except StopIteration:
pass
else:
pixmap = pixmap.scaled(it.rect().size().toSize())
pixmap_it = QtGui.QGraphicsPixmapItem(pixmap, it)
def main():
app = QtGui.QApplication(sys.argv)
ex = Settings()
ex.show()
sys.exit(app.exec_())
if __name__ == '__main__':
main()

Unable to resize QTableWidget

I m trying to resize a table widget inside a QVBoxlayout which I further add as a row to a QFormlayout in pyqt
I m currently adding a QVboxlayout which contains a table widget inside it as a row in a Qformlayout.
And the main aim is to strecth the Table widget till the end of the application window that it acquires the left over space on the window
Using the below code -
class PGSearchDetails():
def __init__(self,parent=None):
self.widget_pgsd = QWidget()
self.layout_pgsd = QFormLayout()
self.layout_pgsd.setFieldGrowthPolicy(QFormLayout.FieldGrowthPolicy(2|1))
self.PG_Id = QLineEdit()
#rx = QRegExp("^\\D+[!,#,#,$,%,\^,&,*,(,),:,\",{,},?,<,>,|,+,-,~,]")
#rx = QRegExp(" (?!(#,#,$|%|\^|&|*|(|)|:|\"|{|}|?|<|>|\||+|-|~|!))[\\w]+")
str_rx = QRegExp("^[A-Za-z*]{20}(?!##$%^&*():\"\{\}?<>\|+-~!_-)")
adhr_rx = QRegExp("[A-Z0-9]{12}(?!##$%^&*():\"\{\}?<>\|+-~!_)")
val = QRegExpValidator(str_rx)
val3 = QRegExpValidator(adhr_rx)
self.PG_Id.setValidator(val3)
self.LastName = QLineEdit()
self.LastName.setValidator(val)
self.MobNum = QLineEdit()
qint_val = QIntValidator()
qint_val.setTop(10)
self.MobNum.setValidator(qint_val)
self.layout_pgsd.addRow("First Name",self.PG_Id)
self.layout_pgsd.addRow("Last Name",self.LastName)
self.layout_pgsd.addRow("Mobile Number",self.MobNum)
update_layout_pgsd = QHBoxLayout()
layout_test,table = dbv.Search_View(self.getT)
#layout_test.setGeometry(QRect(200,200,50,50))
#table.setMaximumHeight(800)
#table.setGeometry(200,200,200,200)
#table.setGeometry(1,1,1000,600)
table.resize(1000,600)
update_btn_pgsd = QPushButton('Update')
reset_btn_pgsd = QPushButton('Reset')
update_layout_pgsd.addWidget(update_btn_pgsd)
update_layout_pgsd.addWidget(reset_btn_pgsd)
self.layout_pgsd.addRow(update_layout_pgsd)
##Adding the Table Widget to FormLayot
self.layout_pgsd.addRow(layout_test)
update_btn_pgsd.clicked.connect(partial(self.database,table,self.MobNum,
self.LastName))
#self.widget.setLayout(self.layout_pgsd)
def returnLayout(self):
return self.layout_pgsd
def returnWidget(self):
return self.widget_pgsd
def getT(self,linedit):
print("LE--->",linedit.text())
QtableWidget setup ---
def Search_View(self):
print("Inside Search_view")
central_widget = QWidget() # Create a central widget
db_layout = QVBoxLayout()
#col_count = len(self.pg_details.__dict__.keys())
col_count = 3
table = QTableWidget() # Create a table
#central_widget.setGeometry(200,200,150,150)
#table.maximumSize()
#db_layout.setMaximumSize(200)
db_layout.setGeometry(QRect(0,0,100,30))
db_layout.addWidget(table)
##Tried resizing the Table widget but nothing seems to works
table.resize(1000,600)
table.setGeometry(0,2,1000,600)
#central_widget.resize(central_widget.sizeHint())
#central_widget.setColumnWidth(1000,600)
#db_layout.addItem(update_layout)
central_widget.setLayout(db_layout)
print("Geometry H--->",table.geometry().height())
print("Geometry W--->",table.geometry().width())
print("Geometry X--->",table.geometry().x())
print("Geometry Y--->",table.geometry().y())
return central_widget,table
After the resize function, The table geometry changes to 1000,600 but on the screen it is not reflected. On the app screen it remains the same size everytime
Also find the entire code which contains the Tablayouts as well and Stacked widget for individual radio buttons
class MainWindow(QMainWindow):
def __init__(self):
super().__init__()
self.init_ui()
def init_ui(self):
self.tab_widget = MainTabWindow()
self.setCentralWidget(self.tab_widget)
self.show()
class MainTabWindow(QTabWidget):
def __init__(self,parent=None):
super(MainTabWindow, self).__init__(parent)
self.init_ui()
def init_ui(self):
self.setWindowTitle('PyQt5 Tab Example')
self.tab1 = QWidget()
self.addTab(self.tab1,"Search")
self.PGSearchTab()
def PGSearchTab(self):
print("Search Tab First Tab")
self.central_layout = QVBoxLayout()
self.stack1 = QWidget()
self.stack2 = QWidget()
self.stack3 = QWidget()
self.stack_widget = QStackedWidget()
button_layout = QHBoxLayout()
radio_button_1 = QRadioButton("Search")
radio_button_2 = QRadioButton("Add")
radio_button_3 = QRadioButton("Update")
button_layout.addWidget(radio_button_1)
button_layout.addWidget(radio_button_2)
button_layout.addWidget(radio_button_3)
self.central_layout.addItem(button_layout)
self.stack_widget.addWidget(self.stack1)
self.stack_widget.addWidget(self.stack2)
self.stack_widget.addWidget(self.stack3)
self.central_layout.addWidget(self.stack_widget)
radio_button_1.toggled.connect(lambda :self.SelectButtonCheck(radio_button_1))
self.setTabText(0,"Search")
update_layout = QHBoxLayout()
update_layout.setAlignment(QtCore.Qt.AlignBottom)
update_btn = QPushButton('Update')
reset_btn = QPushButton('Reset')
update_layout.addWidget(update_btn)
update_layout.addWidget(reset_btn)
self.tab1.setLayout(self.central_layout)
def SelectButtonCheck(self,b):
if b.text() == "Search":
if b.isChecked():
print(b.text()+ "is selected")
self.obj_pgsd = pgsd.PGSearchDetails()
layout = self.obj_pgsd.returnLayout()
if self.stack1.layout() is None:
self.stack1.setLayout(layout)
self.stack_widget.setCurrentIndex(0)
def main():
application = QApplication(sys.argv)
main_window = MainTabWindow()
main_window.show()
sys.exit(application.exec_())
if __name__ == '__main__':
main()
I do not seem to understand what is I m missing here
Any pointers would be appreciated.
Also find the working code to execute the above layout setup.
#!/usr/local/bin/python3
import sys
from PyQt5.QtWidgets import (QApplication, QWidget,QMainWindow,QLineEdit,QAction,
QLabel,QPushButton,QVBoxLayout,
QTabWidget,QFormLayout,QHBoxLayout,
QRadioButton,QCheckBox,QTextEdit,
QListView,QDialogButtonBox,QSizePolicy,QCalendarWidget)
from PyQt5 import QtCore
import PyQt5.Qt
from PyQt5.Qt import *
from PyQt5.QtCore import pyqtSlot
from PyQt5 import QtSql
from functools import partial
class MainWindow(QMainWindow):
def __init__(self):
super().__init__()
self.init_ui()
def init_ui(self):
self.tab_widget = MainTabWindow()
self.setCentralWidget(self.tab_widget)
self.show()
class MainTabWindow(QTabWidget):
def __init__(self,parent=None):
super(MainTabWindow, self).__init__(parent)
self.init_ui()
def init_ui(self):
self.setWindowTitle('PyQt5 Tab Example')
self.tab1 = QWidget()
self.addTab(self.tab1,"Search")
self.PGSearchTab()
def PGSearchTab(self):
print("Search Tab First Tab")
self.central_layout = QVBoxLayout()
self.stack1 = QWidget()
self.stack2 = QWidget()
self.stack3 = QWidget()
self.stack_widget = QStackedWidget()
button_layout = QHBoxLayout()
radio_button_1 = QRadioButton("Search")
radio_button_2 = QRadioButton("Add")
radio_button_3 = QRadioButton("Update")
button_layout.addWidget(radio_button_1)
button_layout.addWidget(radio_button_2)
button_layout.addWidget(radio_button_3)
self.central_layout.addItem(button_layout)
self.stack_widget.addWidget(self.stack1)
self.stack_widget.addWidget(self.stack2)
self.stack_widget.addWidget(self.stack3)
self.central_layout.addWidget(self.stack_widget)
radio_button_1.toggled.connect(lambda :self.SelectButtonCheck(radio_button_1))
self.setTabText(0,"Search")
update_layout = QHBoxLayout()
update_layout.setAlignment(QtCore.Qt.AlignBottom)
update_btn = QPushButton('Update')
reset_btn = QPushButton('Reset')
update_layout.addWidget(update_btn)
update_layout.addWidget(reset_btn)
self.tab1.setLayout(self.central_layout)
def SelectButtonCheck(self,b):
if b.text() == "Search":
if b.isChecked():
print(b.text()+ "is selected")
self.obj_pgsd = PGSearchDetails()
layout = self.obj_pgsd.returnLayout()
if self.stack1.layout() is None:
self.stack1.setLayout(layout)
self.stack_widget.setCurrentIndex(0)
class PGSearchDetails():
def __init__(self,parent=None):
self.widget_pgsd = QWidget()
self.layout_pgsd = QFormLayout()
self.layout_pgsd.setFieldGrowthPolicy(QFormLayout.FieldGrowthPolicy(2|1))
self.PG_Id = QLineEdit()
#rx = QRegExp("^\\D+[!,#,#,$,%,\^,&,*,(,),:,\",{,},?,<,>,|,+,-,~,]")
#rx = QRegExp(" (?!(#,#,$|%|\^|&|*|(|)|:|\"|{|}|?|<|>|\||+|-|~|!))[\\w]+")
str_rx = QRegExp("^[A-Za-z*]{20}(?!##$%^&*():\"\{\}?<>\|+-~!_-)")
adhr_rx = QRegExp("[A-Z0-9]{12}(?!##$%^&*():\"\{\}?<>\|+-~!_)")
val = QRegExpValidator(str_rx)
val3 = QRegExpValidator(adhr_rx)
self.PG_Id.setValidator(val3)
self.LastName = QLineEdit()
self.LastName.setValidator(val)
self.MobNum = QLineEdit()
qint_val = QIntValidator()
qint_val.setTop(10)
self.MobNum.setValidator(qint_val)
self.layout_pgsd.addRow("First Name",self.PG_Id)
self.layout_pgsd.addRow("Last Name",self.LastName)
self.layout_pgsd.addRow("Mobile Number",self.MobNum)
update_layout_pgsd = QHBoxLayout()
layout_test,table = self.Search_View(self.getT)
#layout_test.setGeometry(QRect(200,200,50,50))
#table.setMaximumHeight(800)
#table.setGeometry(200,200,200,200)
#table.setGeometry(1,1,1000,600)
table.resize(1000,600)
update_btn_pgsd = QPushButton('Update')
reset_btn_pgsd = QPushButton('Reset')
update_layout_pgsd.addWidget(update_btn_pgsd)
update_layout_pgsd.addWidget(reset_btn_pgsd)
self.layout_pgsd.addRow(update_layout_pgsd)
##Adding the Table Widget to FormLayot
self.layout_pgsd.addRow(layout_test)
update_btn_pgsd.clicked.connect(partial(self.database,table,self.MobNum,
self.LastName))
#self.widget.setLayout(self.layout_pgsd)
def returnLayout(self):
return self.layout_pgsd
def returnWidget(self):
return self.widget_pgsd
def getT(self,linedit):
print("LE--->",linedit.text())
def Search_View(self,text):
print("Inside Search_view")
central_widget = QWidget() # Create a central widget
db_layout = QVBoxLayout()
#col_count = len(self.pg_details.__dict__.keys())
col_count = 3
table = QTableWidget() # Create a table
#central_widget.setGeometry(200,200,150,150)
#table.maximumSize()
#db_layout.setMaximumSize(200)
db_layout.setGeometry(QRect(0,0,100,30))
db_layout.addWidget(table)
##Tried resizing the Table widget but nothing seems to works
table.resize(1000,600)
table.setGeometry(0,2,1000,600)
#central_widget.resize(central_widget.sizeHint())
#central_widget.setColumnWidth(1000,600)
#db_layout.addItem(update_layout)
central_widget.setLayout(db_layout)
print("Geometry H--->",table.geometry().height())
print("Geometry W--->",table.geometry().width())
print("Geometry X--->",table.geometry().x())
print("Geometry Y--->",table.geometry().y())
return central_widget,table
def SqlExec(self,text):
db = QtSql.QSqlDatabase.addDatabase('QMYSQL')
db.setHostName('localhost')
db.setDatabaseName('Test')
db.setUserName('root')
db.open()
query = QtSql.QSqlQuery()
select = "select * from Test.PG_Details where PG_Id=?"# where PG_Id = 1"
query.prepare(select)
indexes = range(3)
print("TEXT----->",text)
query.addBindValue(text)
#query.exec_(select)
query.exec_()
print("Sizze----",query.size())
row_count = query.size()
db.record('PG_Details')
col_list = []
for i in range(db.record('PG_Details').count()):
print("FIELD----->",db.record('PG_Details').field(i).name())
col_list.append(db.record('PG_Details').field(i).name())
db.close()
return query,row_count,col_list
def database(self,table,text,text2):
text = text.text()
query_result,row_count,col_list = self.SqlExec(text)
i = 0
table.setColumnCount(3) #Set three columns
table.setRowCount(row_count)
table.setHorizontalHeaderLabels(col_list)
while query_result.next():
#print(query_result.value(i))
result_row = [query_result.value(index) for index in range(query_result.record().count())]
#print("RR--->",result_row)
for idx,val in enumerate(result_row):
#print("IDX----->",idx)
table.setItem(i, idx, QTableWidgetItem(val))
i = i + 1
def main():
application = QApplication(sys.argv)
main_window = MainTabWindow()
main_window.show()
sys.exit(application.exec_())
if __name__ == '__main__':
main()

The problem is that QFormLayout makes every time you add a widget using addRow () uses strech, the solution is to use a QVBoxLayout, and in that QVBoxLayout is to pass the QFormLayout and the layout_test.
class PGSearchDetails():
def __init__(self,parent=None):
self.widget_pgsd = QWidget()
self.layout = QVBoxLayout() # <---
self.layout_pgsd = QFormLayout()
self.layout.addLayout(self.layout_pgsd) # <---
self.layout_pgsd.setFieldGrowthPolicy(QFormLayout.FieldGrowthPolicy(2|1))
...
self.layout_pgsd.addRow(update_layout_pgsd)
##Adding the Table Widget to FormLayot
# self.layout_pgsd.addRow(layout_test)
self.layout.addWidget(layout_test) # <---
update_btn_pgsd.clicked.connect(partial(self.database,table,self.MobNum,
self.LastName))
def returnLayout(self):
return self.layout # <---