如何从QtGui.QListWidget获取当前商品的信息? [英] How to get a current Item's info from QtGui.QListWidget?

问题描述

创建了一个QtGui.QListWidget列表小部件:

Created a QtGui.QListWidget list widget:

myListWidget = QtGui.QListWidget()

使用QListWidgetItem列表项填充此ListWidget:

Populated this ListWidget with QListWidgetItem list items:

for word in ['cat', 'dog', 'bird']:
    list_item = QtGui.QListWidgetItem(word, myListWidget)

现在在list_item的左键单击上连接一个函数:

Now connect a function on list_item's left click:

def print_info():
    print myListWidget.currentItem().text()


myListWidget.currentItemChanged.connect(print_info)

从我的代码中可以看到，我左键单击的只是list_item的标签名称.但是除了标签名称之外，我还想获取一个list_item的索引号(在ListWidget中显示的订单号).我想获得有关左击list_item的尽可能多的信息.我看着目录(my_list_item).但是我在那里没有任何用处(除了已经使用过的my_list_item.text()方法，该方法返回list_item的标签名称).提前致谢！

As you see from my code all I am getting on a left click is a list_item's label name. But aside from a label name I would like to get a list_item's index number (order number as it is displayed in ListWidget). I would like to get as much info on left-clicked list_item as possible. I looked at dir(my_list_item). But I can't anything useful there ( other than already used my_list_item.text() method which returns a list_item's label name). Thanks in advance!

推荐答案

使用 QListWidget.currentRow 获取当前项目的索引:

Use QListWidget.currentRow to get the index of the current item:

def print_info():
    print myListWidget.currentRow()
    print myListWidget.currentItem().text()

QListWidgetItem 不知道它自己的索引:由列表决定-widget来进行管理.

A QListWidgetItem does not know its own index: it's up to the list-widget to manage that.

您还应该注意， currentItemChanged 发送当前和之前的项目作为参数，因此您可以简化为:

You should also note that currentItemChanged sends the current and previous items as arguments, so you could simplify to:

def print_info(current, previous):
    print myListWidget.currentRow()
    print current.text()
    print current.isSelected()
    ...

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