Question

是否可以更改不可编辑的QComboBox的文本对齐方式？这个答案是通过使QComboBox可编辑来实现的。

但是，我不想要那个，因为有了这个改变，ComboBox的可点击部分触发列表现在只是右边的箭头，而在整个区域可点击之前触发下拉菜单

Answer 1

答案部分已在链接问题How to center text in QComboBox?中给出剩下的就是使只读对象可以点击。这可以按建议here完成。 ...给你以下代码：

from PyQt4 import QtGui, QtCore

class Window(QtGui.QWidget):
    def __init__(self):
        QtGui.QWidget.__init__(self)
        layout = QtGui.QVBoxLayout(self)
        self.combo = QtGui.QComboBox()
        self.combo.setEditable(True)
        self.ledit = self.combo.lineEdit()
        self.ledit.setAlignment(QtCore.Qt.AlignCenter)
        # as suggested in the comment to 
        # https://stackoverflow.com/questions/23770287/how-to-center-text-in-qcombobox
        self.ledit.setReadOnly(True) # 
        self.combo.addItems('One Two Three Four Five'.split())
        layout.addWidget(self.combo)
        self.clickable(self.combo).connect(self.combo.showPopup)
        self.clickable(self.ledit).connect(self.combo.showPopup)

    def clickable(self,widget):
        """ class taken from 
        https://wiki.python.org/moin/PyQt/Making%20non-clickable%20widgets%20clickable """
        class Filter(QtCore.QObject):
            clicked = QtCore.pyqtSignal()
            def eventFilter(self, obj, event):
                if obj == widget:
                    if event.type() == QtCore.QEvent.MouseButtonRelease:
                        if obj.rect().contains(event.pos()):
                            self.clicked.emit()
                            # The developer can opt for .emit(obj) to get the object within the slot.
                            return True
                return False
        filter = Filter(widget)
        widget.installEventFilter(filter)
        return filter.clicked

if __name__ == '__main__':

    import sys
    app = QtGui.QApplication(sys.argv)
    window = Window()
    window.show()
    sys.exit(app.exec_())

使用PyQt居中不可编辑的QComboBox文本

1 个答案: