TForm: How to get background fixed while scrolling?
lazarus / 31-LCL

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HiRome · 2016-09-27 16:17

Hello! I've just upgraded my Lazarus from 1.2.6 to 1.6. So I got the
fixed background of the my project's form moving while I perform
scrolling (AutoScroll:=True). Although it worked fine on the previous
version (1.2.6).
I implemented the background in PaintWindow procedure. After the issue
I tried implement it in EraseBackground but it was no use - the same
effect 
So I investigated WMPaint at various levels and came to the conclusion
that it's not a good way at all.. I only found out that the gtk2
widget performs redraw the background after PaintWindow and
EraseBackground. So I got stuck..