[PyQt] setCursor does not seem to work as expected in graphicsScene/View
Christopher M. Nahler
christopher.nahler at papermodels.at
Wed Aug 25 09:16:08 BST 2010
I have done more tests and found the following:
- I have tried self.update() in various locations of updateItems() and
it did not change the behaviour.
- The changing of cursors always work with the item though.
- I have also tried commenting the item.update() line and this does not
change the behaviour so I think update() is not relevant to cursor changes.
- I tried it with commenting the loop at the end where i change the item
cursors and that changed the behaviour. So somehow changing the cursor
of an item has an effect on the view.
Any ideas or tips? Is this a bug or am I doing something the wrong way?
If I cannot get the cursors to work right I need to change my approach
on how i tell the user which mode he is working in.
On 24.08.2010 16:03, Mark Summerfield wrote:
> Hi Christopher,
> I think one factor is that you call update() on the items after changing
> the cursor, but not on the view. I tried this:
> def updateItems(self):
> print("view updateItems")
> m = self.scene().viewMode()
> if m == MyScene.SELECTMODE:
> print("is select mode")
> itemCursor = Qt.OpenHandCursor
> elif m == MyScene.EDITMODE:
> print("is edit mode")
> itemCursor = Qt.ForbiddenCursor
> elif m == MyScene.DRAWMODE:
> print("is draw mode")
> itemCursor = Qt.CrossCursor
> items = self.scene().items()
> for item in items:
> which had an interesting effect, i.e., the view's cursor does change,
> but it doesn't work as I expected, and I don't have time to look into it
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