Qt 在窗口小部件隐藏后,如何调整窗口大小,同时仍允许调整窗口大小?
下面是一个简单的例子:Qt 在窗口小部件隐藏后,如何调整窗口大小,同时仍允许调整窗口大小?,qt,pyqt,qt4,pyqt4,Qt,Pyqt,Qt4,Pyqt4,下面是一个简单的例子: from PyQt4 import QtCore, QtGui import sys class MainWindow(QtGui.QWidget): def __init__(self): self.app = QtGui.QApplication(sys.argv) super(MainWindow, self).__init__() self.button = QtGui.QPushButton('Show
from PyQt4 import QtCore, QtGui
import sys
class MainWindow(QtGui.QWidget):
def __init__(self):
self.app = QtGui.QApplication(sys.argv)
super(MainWindow, self).__init__()
self.button = QtGui.QPushButton('Show/Hide')
self.button.setCheckable(True)
self.frame = QtGui.QFrame()
self.frame.setFixedHeight(100)
layout = QtGui.QVBoxLayout()
layout2 = QtGui.QVBoxLayout()
self.setLayout(layout)
self.frame.setLayout(layout2)
layout.addWidget(self.button)
layout.addWidget(self.frame)
layout.addStretch(1)
layout2.addWidget(QtGui.QLabel('Yoyoyo'))
self.button.toggled.connect(self.clickAction)
def startup(self):
self.show()
sys.exit(self.app.exec_())
def clickAction(self):
checked = self.button.isChecked()
if checked:
self.frame.show()
else:
self.frame.hide()
if __name__ == "__main__":
myApp = MainWindow()
myApp.startup()
切换按钮时,框架将适当显示/隐藏。我意识到如果我将main窗口设置为SetFixedSize
,如下所示:
layout.setSizeConstraint(QtGui.QLayout.SetFixedSize)
窗口将按我想要的大小调整。但是,我希望用户仍然能够调整窗口大小,这是SetFixedSize
不允许的
因此,我如何既能实现用户可调整大小的窗口,又能根据其内容调整其大小?根据对话发现,我能够实现这一点。解决方案是在显示/隐藏帧后添加一个QTimer
。QTimer
调用resizeMe
方法,该方法也定义如下
from PyQt4 import QtCore, QtGui
import sys
class MainWindow(QtGui.QWidget):
def __init__(self):
self.app = QtGui.QApplication(sys.argv)
super(MainWindow, self).__init__()
self.button = QtGui.QPushButton('Show/Hide')
self.button.setCheckable(True)
self.frame = QtGui.QFrame()
self.frame.setFixedHeight(100)
self.layout = layout = QtGui.QVBoxLayout()
layout2 = QtGui.QVBoxLayout()
self.setLayout(layout)
self.frame.setLayout(layout2)
layout.addWidget(self.button)
layout.addWidget(self.frame)
layout.addStretch(1)
layout2.addWidget(QtGui.QLabel('Yoyoyo'))
self.button.toggled.connect(self.clickAction)
def startup(self):
self.show()
sys.exit(self.app.exec_())
def clickAction(self):
checked = self.button.isChecked()
if checked:
self.frame.show()
else:
self.frame.hide()
QtCore.QTimer.singleShot(0, self.resizeMe)
def resizeMe(self):
self.resize(self.minimumSizeHint())
if __name__ == "__main__":
myApp = MainWindow()
myApp.startup()