PyQT: how to open new window

PyQT: how to open new window

In PyQt, you can open a new window by creating an instance of a QDialog or QMainWindow (or their subclasses) and showing it using the show() method. Here's how you can do it:

  • Import Required Modules: Import the necessary classes from the PyQt modules.
import sys from PyQt5.QtWidgets import QApplication, QMainWindow, QPushButton, QDialog, QLabel
  • Create the Main Window: Create a main window with a button. When the button is clicked, it will open a new window.
class MainWindow(QMainWindow): def __init__(self): super().__init__() self.setWindowTitle("Main Window") self.setGeometry(100, 100, 400, 300) button = QPushButton("Open New Window", self) button.clicked.connect(self.open_new_window) button.move(150, 100) def open_new_window(self): new_window = NewWindow(self) new_window.exec_() class NewWindow(QDialog): def __init__(self, parent=None): super().__init__(parent) self.setWindowTitle("New Window") self.setGeometry(200, 200, 300, 200) label = QLabel("This is a new window!", self) label.move(100, 80) if __name__ == "__main__": app = QApplication(sys.argv) main_window = MainWindow() main_window.show() sys.exit(app.exec_())

In this example:

  • The MainWindow class is a subclass of QMainWindow. It has a button that, when clicked, triggers the open_new_window method to create and show a NewWindow instance.
  • The NewWindow class is a subclass of QDialog. It's a simple dialog with a label.

Remember to replace the NewWindow class with your desired content and functionality for the new window. The above example illustrates the basic structure of opening a new window in PyQt.

Examples

  1. "PyQt open new window example"

    • Description: Users often search for examples or tutorials on how to open a new window in a PyQt application. This query reflects a general interest in understanding the basic implementation.
    # Example of opening a new window in PyQt class MainWindow(QMainWindow): def __init__(self): super().__init__() self.setWindowTitle("Main Window") self.setGeometry(100, 100, 400, 200) self.button = QPushButton("Open New Window", self) self.button.clicked.connect(self.open_new_window) def open_new_window(self): self.new_window = NewWindow() self.new_window.show() class NewWindow(QDialog): def __init__(self): super().__init__() self.setWindowTitle("New Window") self.setGeometry(200, 200, 300, 150)

  2. "PyQt open new window on button click"

    • Description: This query indicates a specific need to open a new window when a button is clicked in a PyQt application.
    # Open new window on button click in PyQt class MainWindow(QMainWindow): def __init__(self): super().__init__() self.setWindowTitle("Main Window") self.setGeometry(100, 100, 400, 200) self.button = QPushButton("Open New Window", self) self.button.clicked.connect(self.open_new_window) def open_new_window(self): self.new_window = NewWindow() self.new_window.show() class NewWindow(QDialog): def __init__(self): super().__init__() self.setWindowTitle("New Window") self.setGeometry(200, 200, 300, 150)

  3. "PyQt create new window on action"

    • Description: Users may search for ways to create a new window when a certain action occurs within a PyQt application, beyond just button clicks.
    # Create new window on action in PyQt class MainWindow(QMainWindow): def __init__(self): super().__init__() self.setWindowTitle("Main Window") self.setGeometry(100, 100, 400, 200) self.action_new_window = QAction("New Window", self) self.action_new_window.triggered.connect(self.create_new_window) self.menuBar().addAction(self.action_new_window) def create_new_window(self): self.new_window = NewWindow() self.new_window.show() class NewWindow(QDialog): def __init__(self): super().__init__() self.setWindowTitle("New Window") self.setGeometry(200, 200, 300, 150)

  4. "PyQt open dialog as new window"

    • Description: Some users may specifically want to open a dialog window as a new window in their PyQt application.
    # Open dialog as new window in PyQt class MainWindow(QMainWindow): def __init__(self): super().__init__() self.setWindowTitle("Main Window") self.setGeometry(100, 100, 400, 200) self.button = QPushButton("Open Dialog", self) self.button.clicked.connect(self.open_dialog) def open_dialog(self): dialog = QDialog(self) dialog.setWindowTitle("Dialog Window") dialog.setGeometry(200, 200, 300, 150) dialog.exec_()

  5. "PyQt open child window from main window"

    • Description: Users might be interested in opening a child window from the main window of their PyQt application, maintaining a hierarchical structure.
    # Open child window from main window in PyQt class MainWindow(QMainWindow): def __init__(self): super().__init__() self.setWindowTitle("Main Window") self.setGeometry(100, 100, 400, 200) self.button = QPushButton("Open Child Window", self) self.button.clicked.connect(self.open_child_window) def open_child_window(self): self.child_window = ChildWindow() self.child_window.show() class ChildWindow(QDialog): def __init__(self): super().__init__() self.setWindowTitle("Child Window") self.setGeometry(200, 200, 300, 150)

  6. "PyQt new window on menu item click"

    • Description: Users may want to open a new window when a specific menu item is clicked in a menu bar within their PyQt application.
    # Open new window on menu item click in PyQt class MainWindow(QMainWindow): def __init__(self): super().__init__() self.setWindowTitle("Main Window") self.setGeometry(100, 100, 400, 200) self.menu = self.menuBar().addMenu("File") self.action_new_window = QAction("New Window", self) self.action_new_window.triggered.connect(self.open_new_window) self.menu.addAction(self.action_new_window) def open_new_window(self): self.new_window = NewWindow() self.new_window.show() class NewWindow(QDialog): def __init__(self): super().__init__() self.setWindowTitle("New Window") self.setGeometry(200, 200, 300, 150)

  7. "PyQt create new window from context menu"

    • Description: This query targets users interested in creating a new window when a context menu is activated, such as by right-clicking, in a PyQt application.
    # Create new window from context menu in PyQt class MainWindow(QMainWindow): def __init__(self): super().__init__() self.setWindowTitle("Main Window") self.setGeometry(100, 100, 400, 200) self.setContextMenuPolicy(Qt.ActionsContextMenu) self.action_new_window = QAction("New Window", self) self.action_new_window.triggered.connect(self.create_new_window) self.addAction(self.action_new_window) def create_new_window(self): self.new_window = NewWindow() self.new_window.show() class NewWindow(QDialog): def __init__(self): super().__init__() self.setWindowTitle("New Window") self.setGeometry(200, 200, 300, 150)

  8. "PyQt open new window on tab click"

    • Description: Users might search for ways to open a new window when a tab is clicked in a tab widget within their PyQt application.
    # Open new window on tab click in PyQt class MainWindow(QMainWindow): def __init__(self): super().__init__() self.setWindowTitle("Main Window") self.setGeometry(100, 100, 400, 200) self.tab_widget = QTabWidget(self) self.tab_widget.addTab(QWidget(), "Tab 1") self.tab_widget.addTab(QWidget(), "Tab 2") self.tab_widget.tabBarClicked.connect(self.open_new_window) def open_new_window(self, index): if index == self.tab_widget.count() - 1: self.new_window = NewWindow() self.new_window.show() class NewWindow(QDialog): def __init__(self): super().__init__() self.setWindowTitle("New Window") self.setGeometry(200, 200, 300, 150)

  9. "PyQt open new window with parameters"

    • Description: Users may be interested in opening a new window with parameters passed from the main window or another source.
    # Open new window with parameters in PyQt class MainWindow(QMainWindow): def __init__(self): super().__init__() self.setWindowTitle("Main Window") self.setGeometry(100, 100, 400, 200) self.button = QPushButton("Open New Window", self) self.button.clicked.connect(self.open_new_window) def open_new_window(self): self.new_window = NewWindow("Parameter Value") self.new_window.show() class NewWindow(QDialog): def __init__(self, parameter): super().__init__() self.setWindowTitle("New Window") self.setGeometry(200, 200, 300, 150) self.parameter = parameter

  10. "PyQt open new window with data transfer"

    • Description: Users might be interested in opening a new window while simultaneously transferring data between the main window and the new window.
    # Open new window with data transfer in PyQt class MainWindow(QMainWindow): def __init__(self): super().__init__() self.setWindowTitle("Main Window") self.setGeometry(100, 100, 400, 200) self.button = QPushButton("Open New Window", self) self.button.clicked.connect(self.open_new_window) self.data_to_transfer = "Data to Transfer" def open_new_window(self): self.new_window = NewWindow(self.data_to_transfer) self.new_window.show() class NewWindow(QDialog): def __init__(self, data): super().__init__() self.setWindowTitle("New Window") self.setGeometry(200, 200, 300, 150) self.data_received = data

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