問題描述

我使用 Qt Designer 創建了一個簡單的 UI，并將其轉換為 Python 代碼.我搜索了任何方法來檢測窗口大小的變化.

I create a simple UI with Qt Designer and convert it to Python codes. I searched for any method to detect changing window size.

這是生成的代碼:

from PyQt5 import QtCore, QtGui, QtWidgets

class Ui_MainWindow(object):
    def onResize(event):
        print(event)

    def setupUi(self, MainWindow):
        MainWindow.setObjectName("MainWindow")
        MainWindow.setWindowTitle("MainWindow")
        MainWindow.resize(200, 200)
        self.centralwidget = QtWidgets.QWidget(MainWindow)
        self.centralwidget.setObjectName("centralwidget")
        MainWindow.setCentralWidget(self.centralwidget)

        MainWindow.resized.connect(self.someFunction)

        QtCore.QMetaObject.connectSlotsByName(MainWindow)

if __name__ == "__main__":
    import sys
    app = QtWidgets.QApplication(sys.argv)
    MainWindow = QtWidgets.QMainWindow()
    ui = Ui_MainWindow()
    ui.setupUi(MainWindow)
    MainWindow.show()
    sys.exit(app.exec_())

我發現了一個類似的問題QWidget resize signal?和本教程處理大小 建議覆蓋 resizeEvent 方法QMainWindow.

I found a similar question QWidget resize signal? and this tutorial to handle size that recommended overriding resizeEvent method of QMainWindow.

但其中任何一個都不能解決我的問題.是否有任何 resized 函數來檢測窗口調整大小，如下所示:

But any of them doesn't solve my problem. Is there any resized function to detect window resizing like below:

MainWindow.resized.connect(self.someFunction)

推薦答案

默認沒有這個信號，但是你可以創建resized信號，我們在resizeEvent 函數.

There is no such signal by default, but you can create the resized signal, we emit it in the resizeEvent function.

例如:

from PyQt5 import QtCore, QtGui, QtWidgets

class Ui_MainWindow(object):
    def setupUi(self, MainWindow):
        MainWindow.setObjectName("MainWindow")
        MainWindow.setWindowTitle("MainWindow")
        MainWindow.resize(200, 200)
        self.centralwidget = QtWidgets.QWidget(MainWindow)
        self.centralwidget.setObjectName("centralwidget")
        MainWindow.setCentralWidget(self.centralwidget)
        QtCore.QMetaObject.connectSlotsByName(MainWindow)


class Window(QtWidgets.QMainWindow):
    resized = QtCore.pyqtSignal()
    def  __init__(self, parent=None):
        super(Window, self).__init__(parent=parent)
        ui = Ui_MainWindow()
        ui.setupUi(self)
        self.resized.connect(self.someFunction)

    def resizeEvent(self, event):
        self.resized.emit()
        return super(Window, self).resizeEvent(event)

    def someFunction(self):
        print("someFunction")


if __name__ == "__main__":
    import sys
    app = QtWidgets.QApplication(sys.argv)
    w = Window()
    w.show()
    sys.exit(app.exec_())

這篇關于檢測 Widget-window resized 信號中的調整大小的文章就介紹到這了，希望我們推薦的答案對大家有所幫助，也希望大家多多支持html5模板網！