PyQt QGraphicsView 无法设置WindowIcon
我在 MDIArea 中使用子类 QGraphicsView 我希望能够从对象“内部”更改窗口的图标，但它似乎忽略了我......没有错误或警告......它只是不这样做。
if self.world.is_dirty:
self.setWindowIcon( QtGui.QIcon ( 'images/dirty.png' ) )
self.setWindowTitle('dirty')
else:
self.setWindowIcon( QtGui.QIcon ( 'images/clean.png' ) )
self.setWindowTitle('clean')
使用上述内容，WindowTitle 可以按预期完美更改，但图标仍然顽固地固定为 MainWindow 图标。我认为它可能会与 QIcon 发生冲突，但我检查了 isNull() 并且这是错误的..所以不是 Null。
当我测试时，我尝试从 MainWindow 对象更改图标，效果很好...
self.mdiArea.activeSubWindow().setWindowIcon(QtGui.QIcon ('images/dirty.png'))
那么为什么当我从视图中尝试时它会忽略我呢？
I'm using sub-classed QGraphicsView's in an MDIArea
I want to be able to change the icon of the window from 'within' the object, but it just seems to ignore me... no errors or warnings... it just doesn't do it.
if self.world.is_dirty:
self.setWindowIcon( QtGui.QIcon ( 'images/dirty.png' ) )
self.setWindowTitle('dirty')
else:
self.setWindowIcon( QtGui.QIcon ( 'images/clean.png' ) )
self.setWindowTitle('clean')
Using the above, the WindowTitle changes perfectly and as expected, but the icon remains stubbornly fixed as the MainWindow icon. I thought it might be stuggling with the QIcon, but I've checked the isNull() and that's false.. so not Null.
As I test, I tried the changing the icon from the MainWindow object and that works fine...
self.mdiArea.activeSubWindow().setWindowIcon(QtGui.QIcon ('images/dirty.png'))
So why is it ignoring me when i try it from the View?
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查看 windowIcon 属性的 C++ 文档 他们说该属性仅当小部件实际上是一个窗口时才有意义。我假设您的
QGraphicsView实际上不是您的窗口？相比之下，windowTitle 属性的文档说该属性是有意义的更一般地用于顶级小部件。这可能就是不同行为的原因。
Looking at the C++ docs for the windowIcon property they say that the property only makes sense if the widget is actually a window. I assume your
QGraphicsViewis not actually your window?In contrast the docs for the windowTitle property say that that property makes sense more generally for top-level widgets. That's probably the reason for the different behaviour.