On 04.11.2015 18:29, Martin Grajcar wrote:
On Wed, Nov 4, 2015 at 6:07 PM, Ondrej Pokorny <[email protected] <mailto:[email protected]>> wrote:There is TControl.WndProc, but don't call it directly if you don't know what and why you are doing it.I found it in the meantime... and the usage seems to be obvious (if the parent instance and message type checks pass, then send it to the parent, otherwise call inherited). The tiny problem is that it does nothing at all.
This is why I said don't do that :)
My workaround is to scroll manually, like TScrollingWinControl(Parent).ScrollBy (0, ScrollAmount); but this feels stupid as it duplicates the ScrollAmount computation.AFAIK forwarding of messages works only on Windows, This could be the reason for my code doing nothing. :( so if you need it cross-platform, you will have to use "TScrollingWinControl(Parent).ScrollBy (0, ScrollAmount);" in any case. So this should be the correct way to do it.That's ugly like hell and I can only guess the ScrollAmount, which means that it can scroll much more or less than when the mouse it outside of my TControl.
Yes that's true and correct. AFAIK on other OS than Win, no change to do it differently. Maybe Zeljko knows some dirty tricks ;)
Ondrej
-- _______________________________________________ Lazarus mailing list [email protected] http://lists.lazarus.freepascal.org/mailman/listinfo/lazarus
