View Single Post
Old 02-05-2020, 12:19 AM   #948
juliansader
Human being with feelings
 
Join Date: Jul 2009
Posts: 3,120
Default

This is a Windows issue, not WDL, so unfortunately the bug cannot be reported to Cockos.

When I first started with the JS_Composite function, I also tried blitting from overlapped windows using GDI, and encountered the same problem. I then read somewhere that this behavior changed sometime around Windows XP: In the olden days, you could blit hidden parts of windows, but not in recent versions of Windows. I am actually surprised that it works (again) in Windows 10.

Perhaps it has something to do with windows styles? (Perhaps check whether the "overlapped" style has any effect?)
juliansader is offline   Reply With Quote