I've implemented my own drag operation in a view class. In my
mousePressEvent() I setup for possible drag event (e.g. save the location of
the mouse press). In mouseMoveEvent() if a drag is started (mouse button
pressed and mouse moved) I initiate a drag event. In this method I create a
QDrag object then call its exec_() method.
During the drag operation I repeatedly get calls to my dragMoveEvent(). In
this method, I want to check the position of the mouse cursor and update the
status bar to provide user feedback. I do this by calling self.setStatusTip().
When I run my application and perform a drag, I see nothing until the drag is
completed. I then see the status bar updated with the text passed to the last
call made to setStatusTip().
The call to QDrag's exec_() method takes control of the drag operation until
the drag is completed. Once the drag is completed exec_() returns. Is exec_()
crating a separate event loop? Is there any way to force the main event loop
to update the GUI so that my status message will appear during the drag
operation?
Thanks,
Ron
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