Windows

Creating a new window

basic/windows_1.py

import sys

from PyQt6.QtWidgets import (
    QApplication,
    QLabel,
    QMainWindow,
    QPushButton,
    QVBoxLayout,
    QWidget,
)


class AnotherWindow(QWidget):
    """
    This "window" is a QWidget. If it has no parent, it
    will appear as a free-floating window.
    """

    def __init__(self):
        super().__init__()
        layout = QVBoxLayout()
        self.label = QLabel("Another Window")
        layout.addWidget(self.label)
        self.setLayout(layout)


class MainWindow(QMainWindow):
    def __init__(self):
        super().__init__()
        self.button = QPushButton("Push for Window")
        self.button.clicked.connect(self.show_new_window)
        self.setCentralWidget(self.button)

    def show_new_window(self, checked):
        w = AnotherWindow()
        w.show()


app = QApplication(sys.argv)
w = MainWindow()
w.show()
app.exec()

 

basic/windows_1b.py

self객체를 꼭 생성하라!!!

def show_new_window (self, checked):

self.w = AnotherWindow()

self.w.show()

 

basic/windows_3.py

if you want to show a particular plot, or log output.

class MainWindow(QMainWindow):
    def __init__(self):
        super().__init__()
        self.w = None  # No external window yet.
        self.button = QPushButton("Push for Window")
        self.button.clicked.connect(self.show_new_window)
        self.setCentralWidget(self.button)

    def show_new_window(self, checked):
        if self.w is None:
            self.w = AnotherWindow()
            self.w.show()

 

Closing a window

basic/windows_4.py

    def show_new_window(self, checked):
        if self.w is None:
            self.w = AnotherWindow()
            self.w.show()

        else:
            self.w = None  # Discard reference, close window.

동일 기능

    def show_new_window(self, checked):
        if self.w is None:
            self.w = AnotherWindow()
            self.w.show()

        else:
            self.w.close()
            self.w = None  # Discard reference, close window.

 

Persistent windows

basic/windows_5.py

import sys
from random import randint

from PyQt6.QtWidgets import (
    QApplication,
    QLabel,
    QMainWindow,
    QPushButton,
    QVBoxLayout,
    QWidget,
)


class AnotherWindow(QWidget):
    """
    This "window" is a QWidget. If it has no parent, it
    will appear as a free-floating window.
    """

    def __init__(self):
        super().__init__()
        layout = QVBoxLayout()
        self.label = QLabel("Another Window % d" % randint(0, 100))
        layout.addWidget(self.label)
        self.setLayout(layout)


class MainWindow(QMainWindow):
    def __init__(self):
        super().__init__()
        self.w = AnotherWindow()
        self.button = QPushButton("Push for Window")
        self.button.clicked.connect(self.show_new_window)
        self.setCentralWidget(self.button)

    def show_new_window(self, checked):
        self.w.show()


app = QApplication(sys.argv)
w = MainWindow()
w.show()
app.exec()

 

Showing & hiding windows

basic/windows_6.py

    def toggle_window(self, checked):
        if self.w.isVisible():
            self.w.hide()

        else:
            self.w.show()

 

Connecting signals between windows

신호와 슬롯을 사용하여 위젯을 직접 연결하는 방법을 보았습니다. 창을 가로질러 신호를 연결할 때도 동일한 원리가 적용됩니다 — 한 창의 신호를 다른 창의 슬롯에 연결할 수 있으며 슬롯에 액세스할 수 있기만 하면 됩니다.

basic/windows_7.py

상단 상자에 텍스트를 입력하면 레이블에 즉시 표시됩니다. 텍스트는 창이 숨겨져 있는 동안에도 업데이트됩니다 — 위젯의 상태를 업데이트하는 것은 위젯이 표시되는 것에 의존하지 않습니다.

import sys
from random import randint

from PyQt6.QtWidgets import (
    QApplication,
    QLabel,
    QMainWindow,
    QPushButton,
    QVBoxLayout,
    QWidget,
    QLineEdit,
)


class AnotherWindow(QWidget):
    """
    This "window" is a QWidget. If it has no parent, it
    will appear as a free-floating window.
    """

    def __init__(self):
        super().__init__()
        layout = QVBoxLayout()
        self.label = QLabel("Another Window")  # <2>
        layout.addWidget(self.label)
        self.setLayout(layout)


class MainWindow(QMainWindow):
    def __init__(self):
        super().__init__()
        self.w = AnotherWindow()
        self.button = QPushButton("Push for Window")
        self.button.clicked.connect(self.toggle_window)

        self.input = QLineEdit()
        self.input.textChanged.connect(self.w.label.setText)  # <1>

        layout = QVBoxLayout()
        layout.addWidget(self.button)
        layout.addWidget(self.input)
        container = QWidget()
        container.setLayout(layout)

        self.setCentralWidget(container)

    def toggle_window(self, checked):
        if self.w.isVisible():
            self.w.hide()

        else:
            self.w.show()


app = QApplication(sys.argv)
w = MainWindow()
w.show()
app.exec()