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PyQt TypeError connect()
(1 answer)
Closed 2 years ago.
this is the full code, i don't know why i can't use that clicked.connect on my mind, that's still logic '-' but why!!!???
from PyQt5 import QtGui
from PyQt5.QtWidgets import QApplication, QWidget, QScrollArea, QVBoxLayout, QGroupBox, QLabel, QPushButton, QFormLayout
import sys
class Window(QWidget):
def __init__(self, val):
super().__init__()
self.title = "PyQt5 Scroll Bar"
self.top = 200
self.left = 500
self.width = 400
self.height = 300
self.setWindowIcon(QtGui.QIcon("icon.png"))
self.setWindowTitle(self.title)
self.setGeometry(self.left, self.top, self.width, self.height)
formLayout = QFormLayout()
groupBox = QGroupBox("This Is Group Box")
labelLis = []
comboList = []
for i in range(val):
labelLis.append(QLabel("Label"))
comboList.append(QPushButton("Click Me").clicked.connect(print("hello")))
formLayout.addRow(labelLis[i], comboList[i])
groupBox.setLayout(formLayout)
scroll = QScrollArea()
scroll.setWidget(groupBox)
scroll.setWidgetResizable(True)
scroll.setFixedHeight(400)
layout = QVBoxLayout(self)
layout.addWidget(scroll)
self.show()
App = QApplication(sys.argv)
window = Window(30)
sys.exit(App.exec())
and i got error in here, i wanna make every each item can clicked, but i don't know why this happen :"D
for i in range(val):
labelLis.append(QLabel("Label"))
comboList.append(QPushButton("Click Me").clicked.connect(print("hello")))
formLayout.addRow(labelLis[i], comboList[i])
groupBox.setLayout(formLayout)
this code not working, comboList.append(QPushButton("Click Me").clicked.connect(print("hello")))
I don’t know why comboList.append(QPushButton("Click Me").clicked.connect(self.hello) error occurs
But i will do
qbutton = QPushButton("Click Me")
qbutton.clicked.connect(self.hello)
result
from PyQt5 import QtGui
from PyQt5.QtWidgets import QApplication, QWidget, QScrollArea, QVBoxLayout, QGroupBox, QLabel, QPushButton, QFormLayout
import sys
class Window(QWidget):
def __init__(self, val):
super().__init__()
self.title = "PyQt5 Scroll Bar"
self.top = 200
self.left = 500
self.width = 400
self.height = 300
self.setWindowIcon(QtGui.QIcon("icon.png"))
self.setWindowTitle(self.title)
self.setGeometry(self.left, self.top, self.width, self.height)
formLayout = QFormLayout()
groupBox = QGroupBox("This Is Group Box")
labelLis = []
comboList = []
for i in range(val):
qbutton = QPushButton("Click Me")
qbutton.clicked.connect(self.hello)
labelLis.append(QLabel("Label"))
comboList.append(qbutton)
formLayout.addRow(labelLis[i], comboList[i])
groupBox.setLayout(formLayout)
scroll = QScrollArea()
scroll.setWidget(groupBox)
scroll.setWidgetResizable(True)
scroll.setFixedHeight(400)
layout = QVBoxLayout(self)
layout.addWidget(scroll)
self.show()
def hello(self):
print('hello')
App = QApplication(sys.argv)
window = Window(30)
sys.exit(App.exec())
Related
from PyQt5.QtWidgets import QApplication, QLabel, QWidget, QFileDialog, QPushButton, QLineEdit,QVBoxLayout, QHBoxLayout
from PyQt5.QtCore import *
from PyQt5.QtGui import QPixmap
from PyQt5.QtWidgets import QApplication, QWidget, QPushButton, QDialog, QVBoxLayout
import Updated_encrypt
import sys
class Window(QWidget):
def __init__(self):
super().__init__()
self.title = 'Encrypt/Decrypt'
self.top = 200
self.left = 500
self.width = 400
self.height = 300
self.InitWindow()
def InitWindow(self):
self.setWindowTitle(self.title)
self.setGeometry(self.left, self.top, self.width, self.height)
vbox = QVBoxLayout()
self.button1 = QPushButton('Encrypt')
self.button1.clicked.connect(self.openSecondDialog)
self.button2 = QPushButton('Decrypt')
vbox.addWidget(self.button1)
vbox.addWidget(self.button2)
self.setLayout(vbox)
self.show()
def openSecondDialog(self):
hbox = QVBoxLayout()
mydialog = QDialog(self)
mydialog.show()
self.button2 = QPushButton('Check Image')
self.button2.clicked.connect(self.getImage)
hbox.addWidget(self.button2)
self.setLayout(hbox)
self.show()
def getImage(self):
hbox = QHBoxLayout()
file_Name = QFileDialog.getOpenFileName(self,
'OpenFile',
'',
'')
image_path = file_Name[0]
updatedImage = Updated_encrypt.decrypt(image_path, 123)
pixmap = QPixmap(updatedImage)
self.label.setPixmap(QPixmap(pixmap))
self.resize(pixmap.width(), pixmap.height())
App = QApplication(sys.argv)
window = Window()
sys.exit(App.exec())
I have my code set up to implement an algorithm to modify an image when my I select it from my pop up dialogue. What I am trying to accomplish is for the image to pop up in a separate window when I click the encrypt button. I can't seem to get anything to pop up in the separate window aside from the window itself. Any help would be appreciated.
You have at least the following errors:
The "hbox" created is being added to the window and not to the QDialog: self.setLayout(hbox), it must be mydialog.setLayout(hbox).
Do not use the same name for 2 different objects as they can cause problems, in your case there are 2 QPushButton assigned to the variable "self.button2".
You try to use the variable "self.label" but never believe it.
Considering the above we can make the following improvements:
Use more descriptive names to easily distinguish their function.
If you are going to have a window that has a different objective, it is better to create a class.
The above avoid the indicated problems, considering the above the solution is:
import sys
from PyQt5.QtGui import QPixmap
from PyQt5.QtWidgets import (
QApplication,
QDialog,
QFileDialog,
QHBoxLayout,
QLabel,
QPushButton,
QVBoxLayout,
QWidget,
)
import Updated_encrypt
class Dialog(QDialog):
def __init__(self, parent=None):
super().__init__(parent)
self.load_image_btn = QPushButton("Check Image")
self.load_image_btn.clicked.connect(self.load_image)
self.image_lbl = QLabel()
lay = QVBoxLayout(self)
lay.addWidget(self.load_image_btn)
lay.addWidget(self.image_lbl)
def load_image(self):
image_path, _ = QFileDialog.getOpenFileName(self, "OpenFile", "", "")
if image_path:
updatedImage = Updated_encrypt.decrypt(image_path, 123)
pixmap = QPixmap(updatedImage)
self.image_lbl.setPixmap(QPixmap(pixmap))
class Window(QWidget):
def __init__(self, parent=None):
super().__init__(parent)
self.title = "Encrypt/Decrypt"
self.InitWindow()
def InitWindow(self):
self.setWindowTitle(self.title)
self.setGeometry(200, 500, 400, 300)
self.encrypt_btn = QPushButton("Encrypt")
self.encrypt_btn.clicked.connect(self.openSecondDialog)
self.decrypt_btn = QPushButton("Decrypt")
vbox = QVBoxLayout(self)
vbox.addWidget(self.encrypt_btn)
vbox.addWidget(self.decrypt_btn)
def openSecondDialog(self):
dialog = Dialog(self)
dialog.show()
if __name__ == "__main__":
app = QApplication(sys.argv)
window = Window()
window.show()
sys.exit(app.exec())
I'm having trouble setting up PyQt on my own. My idea its to creat a music-player with a song title and album cover. I have had success in creating my own window and adding the album cover. But I can't add the label in the right position. I want the song title to be at the top-center of the window, like the image below:
I have tried a lot of ways, but had no luck.
import sys
from PyQt5.QtGui import QIcon, QPixmap, QFontDatabase, QFont
from PyQt5.QtWidgets import QApplication, QLabel, QMainWindow, QWidget, QGridLayout, QDialog
from PyQt5.QtCore import Qt, QRect
# Subclass QMainWindow to customise your application's main window
class MainWindow(QMainWindow):
def __init__(self, *args, **kwargs):
super(MainWindow, self).__init__(*args, **kwargs)
self.title = 'PyQt5 simple window - pythonspot.com'
self.left = 10
self.top = 10
self.width = 480
self.height = 320
self.initUI()
self.setWindowTitle("My Awesome App")
def add_font(self):
# Load the font:
font_db = QFontDatabase()
font_id = font_db.addApplicationFont('American Captain.ttf')
families = font_db.applicationFontFamilies(font_id)
ttf_font = QFont(' '.join(families), 15)
return ttf_font
def initUI(self):
ttf_font = self.add_font()
w = QWidget()
self.setWindowTitle(self.title)
self.setGeometry(self.left, self.top, self.width, self.height)
self.show()
album_cover = QLabel(self)
album_pic = QPixmap('resized_image.jpg')
album_cover.setPixmap(album_pic)
album_cover.setAlignment(Qt.AlignCenter)
self.setCentralWidget(album_cover)
art_alb = QLabel(self)
art_alb.setFont(ttf_font)
art_alb.setText("michael buble - christmas")
art_alb.setGeometry(self.x, self.y, self.x, self.y)
art_alb.setAlignment(Qt.AlignTop | Qt.AlignCenter )
art_alb.show()
self.show()
app = QApplication(sys.argv)
window = MainWindow()
window.show()
app.exec_()
You should use a central widget with a layout to control how the child widgets are sized and positioned in the main window. Here is a re-write of your initUI method that should do what you want:
class MainWindow(QMainWindow):
...
def initUI(self):
self.setWindowTitle(self.title)
self.setGeometry(self.left, self.top, self.width, self.height)
widget = QWidget()
layout = QGridLayout(widget)
art_alb = QLabel(self)
ttf_font = self.add_font()
art_alb.setFont(ttf_font)
art_alb.setText("michael buble - christmas")
layout.addWidget(art_alb, 0, 0, Qt.AlignTop | Qt.AlignHCenter)
album_cover = QLabel(self)
album_pic = QPixmap('image.jpg')
album_cover.setPixmap(album_pic)
layout.addWidget(album_cover, 1, 0, Qt.AlignHCenter)
layout.setRowStretch(1, 1)
self.setCentralWidget(widget)
Note that there's no need to keep calling show(), since this is all handled automatically by the layout. For more information, see the Layout Management article in the Qt docs.
I know this question have been asked multiple times. But I can't understand with the existing examples.
I have a code which creates a window with a button called 'start'. I want the app to close the current window and open a new window when the 'start' button is clicked. The new window has to be a blank window.
Any help is much appreciated.
The code is as follows:
import sys
from PyQt5 import QtGui
from PyQt5.QtWidgets import QApplication, QMainWindow, QPushButton,
QToolTip, QMessageBox, QLabel
class Window(QMainWindow):
def __init__(self):
super().__init__()
self.title = "First Window"
self.top = 100
self.left = 100
self.width = 680
self.height = 500
self.pushButton = QPushButton("Start", self)
self.pushButton.move(275, 200)
self.pushButton.setToolTip("<h3>Start the Session</h3>")
self.main_window()
def main_window(self):
self.label = QLabel("Manager", self)
self.label.move(285, 175)
self.setWindowTitle(self.title)
self.setGeometry(self.top, self.left, self.width, self.height)
self.show()
if __name__ == "__main__":
app = QApplication(sys.argv)
window = Window()
sys.exit(app.exec())
Try it:
import sys
from PyQt5 import QtGui
from PyQt5.QtWidgets import (QApplication, QMainWindow, QPushButton,
QToolTip, QMessageBox, QLabel)
class Window2(QMainWindow): # <===
def __init__(self):
super().__init__()
self.setWindowTitle("Window22222")
class Window(QMainWindow):
def __init__(self):
super().__init__()
self.title = "First Window"
self.top = 100
self.left = 100
self.width = 680
self.height = 500
self.pushButton = QPushButton("Start", self)
self.pushButton.move(275, 200)
self.pushButton.setToolTip("<h3>Start the Session</h3>")
self.pushButton.clicked.connect(self.window2) # <===
self.main_window()
def main_window(self):
self.label = QLabel("Manager", self)
self.label.move(285, 175)
self.setWindowTitle(self.title)
self.setGeometry(self.top, self.left, self.width, self.height)
self.show()
def window2(self): # <===
self.w = Window2()
self.w.show()
self.hide()
if __name__ == "__main__":
app = QApplication(sys.argv)
window = Window()
sys.exit(app.exec())
I've been looking through answers for a while but couldn't find a solution to my problem. I recently started playing around with PyQt and trying to code out couple of ideas, one of which was to have a couple of buttons with some text on them and when a button is clicked, its text would change color. Here is my code:
import sys
from PyQt5 import QtWidgets, QtGui
from PyQt5.QtWidgets import (QApplication, QWidget, QPushButton, QLabel, QMainWindow,
QHBoxLayout, QGroupBox, QDialog, QVBoxLayout, QGridLayout, QMessageBox)
from PyQt5.QtCore import pyqtSlot, Qt
class App(QDialog):
def __init__(self):
super().__init__()
self.title = "Battleship"
self.left = 50
self.top = 50
self.width = 750
self.height = 500
self.initUI()
def initUI(self):
self.setGeometry(self.left, self.top, self.width, self.height)
self.setWindowTitle(self.title)
self.setFixedSize(self.width, self.height)
stylesheet = """QPushButton {background: #EEE; color: #11}
!QPushButton {background: #555; color: #EEE}"""
self.setStyleSheet(stylesheet)
self.grid()
layout = QVBoxLayout()
layout.addWidget(self.box)
self.setLayout(layout)
self.show()
def grid(self):
self.box = QGroupBox()
self.layout = QGridLayout()
self.box.setLayout(self.layout)
self.button1 = QPushButton('X', self)
self.button2 = QPushButton('X', self)
self.button3 = QPushButton('X', self)
self.button1.clicked.connect(self.pick)
self.button2.clicked.connect(self.pick)
self.button3.clicked.connect(self.pick)
self.layout.addWidget(self.button1)
self.layout.addWidget(self.button2)
self.layout.addWidget(self.button3)
def pick(self):
# turn 'X' from black to red ONLY on the clicked button
# while leaving the others untouched
pass
#---------------------------------------------------------------
if __name__ == '__main__':
app = QApplication(sys.argv)
gui = App()
sys.exit(app.exec_())
What does the 'pick' function have to look like in order to do this? To clarify: I don't want to make three individual functions, one for each button (as it would be very impractical for a larger number of buttons), but a single function which would work with any button.
the sender() method returns us the object that emits the signal, in your case the button will be pressed:
def pick(self):
# turn 'X' from black to red ONLY on the clicked button
# while leaving the others untouched
btn = self.sender()
btn.setStyleSheet("color: red")
Can someone help me figure out how to combine layouts?
Taking offset from the guides from: [https://pythonspot.com/en/pyqt5/]
I would rather not use Designer as the layout is going to be a part of several tabs that is determined based on the amount of tests and data sets from a specified data folder.
For example, I would like to switch out the Blue button in:
import sys
from PyQt5.QtWidgets import QApplication, QWidget, QPushButton, QHBoxLayout, QGroupBox, QDialog, QVBoxLayout
from PyQt5.QtGui import QIcon
from PyQt5.QtCore import pyqtSlot
class App(QDialog):
def __init__(self):
super().__init__()
self.title = 'PyQt5 layout - pythonspot.com'
self.left = 10
self.top = 10
self.width = 320
self.height = 100
self.initUI()
def initUI(self):
self.setWindowTitle(self.title)
self.setGeometry(self.left, self.top, self.width, self.height)
self.createHorizontalLayout()
windowLayout = QVBoxLayout()
windowLayout.addWidget(self.horizontalGroupBox)
self.setLayout(windowLayout)
self.show()
def createHorizontalLayout(self):
self.horizontalGroupBox = QGroupBox("What is your favorite color?")
layout = QHBoxLayout()
buttonBlue = QPushButton('Blue', self)
buttonBlue.clicked.connect(self.on_click)
layout.addWidget(buttonBlue)
buttonRed = QPushButton('Red', self)
buttonRed.clicked.connect(self.on_click)
layout.addWidget(buttonRed)
buttonGreen = QPushButton('Green', self)
buttonGreen.clicked.connect(self.on_click)
layout.addWidget(buttonGreen)
self.horizontalGroupBox.setLayout(layout)
#pyqtSlot()
def on_click(self):
print('PyQt5 button click')
if __name__ == '__main__':
app = QApplication(sys.argv)
ex = App()
sys.exit(app.exec_())
with the grid layout from:
import sys
from PyQt5.QtWidgets import QApplication, QWidget, QPushButton, QHBoxLayout, QGroupBox, QDialog, QVBoxLayout, QGridLayout
from PyQt5.QtGui import QIcon
from PyQt5.QtCore import pyqtSlot
class App(QDialog):
def __init__(self):
super().__init__()
self.title = 'PyQt5 layout - pythonspot.com'
self.left = 10
self.top = 10
self.width = 320
self.height = 100
self.initUI()
def initUI(self):
self.setWindowTitle(self.title)
self.setGeometry(self.left, self.top, self.width, self.height)
self.createGridLayout()
windowLayout = QVBoxLayout()
windowLayout.addWidget(self.horizontalGroupBox)
self.setLayout(windowLayout)
self.show()
def createGridLayout(self):
self.horizontalGroupBox = QGroupBox("Grid")
layout = QGridLayout()
layout.setColumnStretch(1, 4)
layout.setColumnStretch(2, 4)
layout.addWidget(QPushButton('1'),0,0)
layout.addWidget(QPushButton('2'),0,1)
layout.addWidget(QPushButton('3'),0,2)
layout.addWidget(QPushButton('4'),1,0)
layout.addWidget(QPushButton('5'),1,1)
layout.addWidget(QPushButton('6'),1,2)
layout.addWidget(QPushButton('7'),2,0)
layout.addWidget(QPushButton('8'),2,1)
layout.addWidget(QPushButton('9'),2,2)
self.horizontalGroupBox.setLayout(layout)
if __name__ == '__main__':
app = QApplication(sys.argv)
ex = App()
sys.exit(app.exec_())
You can add a layout as an element of another layout in a similar fashion to adding a widget by using addLayout()
layout = QtWidgets.QHBoxLayout()
sublayout = QtWidgets.QGridLayout()
layout.addLayout(sublayout)