我从这个网址得到了一个例子: How do I Filter the PyQt QCombobox Items based on the text input? 我需要一个例子,但是在创建的ui文件中运行这个有问题。 在ui文件中我有组合框。在
当我使用这个时:
self.ui.comboBox = ExtendedComboBox()
self.ui.comboBox.addItems(['test','test1','test3','test4'])
组合框为空且不活动。在
当我使用这个时:
^{pr2}$ui文件中的组合框仍为空,但显示在一个单独的窗口中,该窗口在ExtendedComboBox中正确运行。在
如何使用ExtendedComboBox在ui文件中工作? 可能是犯了个愚蠢的错误
class ExtendedComboBox(QComboBox):
def __init__(self, parent=None):
super(ExtendedComboBox, self).__init__(parent)
self.setFocusPolicy(Qt.StrongFocus)
self.setEditable(True)
# add a filter model to filter matching items
self.pFilterModel = QSortFilterProxyModel(self)
self.pFilterModel.setFilterCaseSensitivity(Qt.CaseInsensitive)
self.pFilterModel.setSourceModel(self.model())
# add a completer, which uses the filter model
self.completer = QCompleter(self.pFilterModel, self)
# always show all (filtered) completions
self.completer.setCompletionMode(QCompleter.UnfilteredPopupCompletion)
self.setCompleter(self.completer)
# connect signals
self.lineEdit().textEdited[unicode].connect(self.pFilterModel.setFilterFixedString)
self.completer.activated.connect(self.on_completer_activated)
# on selection of an item from the completer, select the corresponding item from combobox
def on_completer_activated(self, text):
if text:
index = self.findText(text)
self.setCurrentIndex(index)
# on model change, update the models of the filter and completer as well
def setModel(self, model):
super(ExtendedComboBox, self).setModel(model)
self.pFilterModel.setSourceModel(model)
self.completer.setModel(self.pFilterModel)
# on model column change, update the model column of the filter and completer as well
def setModelColumn(self, column):
self.completer.setCompletionColumn(column)
self.pFilterModel.setFilterKeyColumn(column)
super(ExtendedComboBox, self).setModelColumn(column)
class CaDialogal(QDialog):
def __init__(self):
QDialog.__init__(self)
# Set up the user interface from Designer.
self.ui = Ui_CaDialog()
self.ui.setupUi(self)
**self.ui.comboBox = ExtendedComboBox()
self.ui.comboBox.addItems(['test','test1','test3','test4'])
#self.ui.comboBox.show()
##self.ui.comboBox.addItems(['test','test1','test3','test4'])**
您不能通过直接分配来替换ui文件中的小部件。在
在这种情况下,可能有几种最简单的方法来推广你的widget。为此,请返回Qt设计器并右键单击要替换的组合框,然后选择“升级到…”。在对话框中,将“Promoted class name”设置为“ExtendedComboBox”,并将“Header file”设置为包含该类的模块的python导入路径(例如
myapp.mainwindow
)。然后单击“Add”和“Promote”,您将在objectinspector窗格中看到类从“QComboBox”更改为“ExtendedComboBox”。在现在,当您使用pyuic重新生成ui模块时,您应该看到它使用了您的
ExtendedComboBox
类,并且在文件的底部将有一个额外的行,如下所示:有了这些,你需要做的就是:
^{pr2}$希望一切都能如你所愿。在
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