问题描述
我有一个小部件(QTabeleWidget、QLabels 和一些 QButton).它是在 Qt-Designer 中构建的,现在我必须实现一些东西.为此,我需要 mousePressEvent.通常我会写一个子类并写这样的东西:
I've got a Widget (QTabeleWidget, QLabels and some QButtons). It was built in Qt-Designer, and now I have to implement some things. For that I need the mousePressEvent.Usually I would write a subclass and write something like this:
def mousePressEvent(self, event):
if event.button() == Qt.LeftButton:
print "left"
else:
print 'right'
但我不知道如何为设计器中创建的小部件执行此操作.我需要它用于 QTableeWidget.希望可以有人帮帮我.我试图在谷歌的帮助下解决问题,但没有成功.这个网站帮助了我很多次,所以我想我会试一试并询问.
But I don't know how to do that for a Widget created in the Designer.I need it for the QTabeleWidget. Hope someone can help me. I tried to solve the problem with the help of google, but without success.This site helped me many times, so I thought I'll give it a shot and ask.
推荐答案
使用 PyQt,可以通过三种不同的方式处理在设计器中创建的表单:
With PyQt there are three different ways to work with forms created in designer:
- 使用单继承并使表单成为成员变量
- 使用多重继承
- 直接从 UI 文件动态生成成员
单一继承:
class MyTableWidget(QTableWidget):
def __init__(self, parent, *args):
super(MyTableWidget, self).__init__(parent, args)
self.ui = YourFormName()
self.ui.setupUi(self)
# all gui elements are now accessed through self.ui
def mousePressEvent(self, event):
pass # do something useful
多重继承:
class MyTableWidget(QTableWidget, YourFormName):
def __init__(self, parent, *args):
super(MyTableWidget, self).__init__(parent, args)
self.setupUi(self)
# self now has all members you defined in the form
def mousePressEvent(self, event):
pass # do something useful
动态生成:
from PyQt4 import uic
yourFormTypeInstance = uic.loadUi('/path/to/your/file.ui')
对于上面的 (3),您最终会得到一个您为表单指定的任何基本类型的实例.然后,您可以根据需要覆盖 mousePressEvent
.
For (3) above, you'll end up with an instance of whatever base type you specified for your form. You can then override your mousePressEvent
as desired.
我建议你看看 第 13.1 节 在 PyQt4 参考手册.13.2 节讨论了 uic
模块.
I'd recommend you take a look at section 13.1 in the PyQt4 reference manual. Section 13.2 talks about the uic
module.
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