我想-使用Python和Qt4– 旋转QPushButton（或至少它的文本），使其可以垂直站立。我在网上看过一些文档，但是我从中没多大意义- 它在C语言中，而且我是C文盲。
根据我的阅读，需要重新实现paintEvent（）处理程序，实例化和旋转QPainter（）。但是我不知道怎么为我只需要的一个QString或QPushButton做到这一点。我假设QPaintEvent会像信号一样具有“发送者”属性，但实际上没有。我似乎可以从此事件中得到的只是QRect或QRegion。
如何找到特定于我的按钮或其标签的事件？ 或者，因为这确实是问题，如何旋转QPushButton？
Mru，在下面提出了一些C ++示例，它完全重新实现了QPushButton。由于我对C ++一无所知，并且由于我实际上不需要完全重新实现painEvent()，因此基于该示例，我尝试在Python中重新实现处理程序。
painEvent()
这是我翻译的内容，但不起作用：\
#!/usr/bin/env python from PyQt4 import QtGui, QtCore import sys class RotatedButton(QtGui.QPushButton): def __init__(self, text, parent, orientation = "west"): QtGui.QPushButton.__init__(self, text, parent) self.orientation = orientation def paintEvent(self, event): painter = QtGui.QStylePainter(self) if self.orientation == 'west': painter.rotate(90) elif self.orientation == 'east': painter.rotate(270) else: raise TypeError painter.drawControl(QtGui.QStyle.CE_PushButton, self.getSyleOptions()) def getSyleOptions(self): options = QtGui.QStyleOptionButton() options.initFrom(self) size = options.rect.size() size.transpose() options.rect.setSize(size) options.features = QtGui.QStyleOptionButton.None options.text = self.text() options.icon = self.icon() options.iconSize = self.iconSize() return options class Main(QtGui.QFrame): def __init__(self): QtGui.QFrame.__init__(self) self.count = 0 self.application = QtCore.QCoreApplication.instance() self.layout = QtGui.QHBoxLayout() self.button = RotatedButton("Hello", self, orientation="west") self.layout.addWidget(self.button) self.setLayout(self.layout) if __name__ == '__main__': application = QtGui.QApplication(sys.argv) application.main = Main() application.main.show() sys.exit(application.exec_())
根据您的代码：
#!/usr/bin/env python from PyQt4 import QtGui, QtCore import sys class RotatedButton(QtGui.QPushButton): def __init__(self, text, parent, orientation = "west"): super(RotatedButton,self).__init__(text, parent) self.orientation = orientation def paintEvent(self, event): painter = QtGui.QStylePainter(self) painter.rotate(90) painter.translate(0, -1 * self.width()); painter.drawControl(QtGui.QStyle.CE_PushButton, self.getSyleOptions()) def minimumSizeHint(self): size = super(RotatedButton, self).minimumSizeHint() size.transpose() return size def sizeHint(self): size = super(RotatedButton, self).sizeHint() size.transpose() return size def getSyleOptions(self): options = QtGui.QStyleOptionButton() options.initFrom(self) size = options.rect.size() size.transpose() options.rect.setSize(size) options.features = QtGui.QStyleOptionButton.None if self.isFlat(): options.features |= QtGui.QStyleOptionButton.Flat if self.menu(): options.features |= QtGui.QStyleOptionButton.HasMenu if self.autoDefault() or self.isDefault(): options.features |= QtGui.QStyleOptionButton.AutoDefaultButton if self.isDefault(): options.features |= QtGui.QStyleOptionButton.DefaultButton if self.isDown() or (self.menu() and self.menu().isVisible()): options.state |= QtGui.QStyle.State_Sunken if self.isChecked(): options.state |= QtGui.QStyle.State_On if not self.isFlat() and not self.isDown(): options.state |= QtGui.QStyle.State_Raised options.text = self.text() options.icon = self.icon() options.iconSize = self.iconSize() return options class Main(QtGui.QFrame): def __init__(self): QtGui.QFrame.__init__(self) self.application = QtCore.QCoreApplication.instance() self.layout = QtGui.QHBoxLayout() self.button = RotatedButton("Hello", self, orientation="west") self.layout.addWidget(self.button) self.setLayout(self.layout) if __name__ == '__main__': application = QtGui.QApplication(sys.argv) application.main = Main() application.main.show() sys.exit(application.exec_())
