Updating QScrollArea scroll bars in code - verticalScrollBar()->value() always returns 0 whatever value it is given
I have a test app with a QScrollArea which is nicely using verticalScrollBar()->setValue() to scroll up and down the scroll bars.
Created a CScrollArea (until I think of a better name) inherited from QScrollArea. Call:
m_verticalScroll = verticalScrollBar()->value();@
no matter what the value of m_verticalScroll, verticalScrollBar()->value() returns 0 - i.e. nothing moves.
Note: My CScrollArea is the centralWidget in a MainWindow (but the QScrollArea within the test app is also the central widget).
Any thoughts please?
your question is too brief and you need to provide more details. Scrolling is straightfoward in QT unlike win32 api/MFC where honestly I found it a pain... Here is a short program where i scroll to
the bottom of a page.
"Download test project":https://dl.dropbox.com/u/51343591/CScroll.rar
@ int maximumY= scrollarea->verticalScrollBar()->maximum();
And slam dunk no questions asked, you scroll to the bottom.
Appreciate the response. As I say, I have the code working in my test app, but the same code (from the same source file) just does not work. If I had more information I would put give it but I do not - it is not even worth including my code in my main project because it is all commented out while I get this working. I am literally just calling the same thing, in the same solution with a different project - very frustrating with such a simple bit of code.
OK, with a fresh brain I have now solved it (just in case anyone else has this problem). The projects were identical for all intents and purposes except for the ui (since I was not accessing the ui and my scroll class was the only thing on the screen I did not see that as a problem).
My full project had styling applied in the UI - inc styling on the scroll bar. Remove that and bingo!!!
(In my defence the whole point was to have the scroll bars hidden so I did not see the styling).