[Bug 54501] IrfanView - Pasting of images into clipboard from native Linux application results in a black screen

[WineHQ Bugzilla]

https://bugs.winehq.org/show_bug.cgi?id=54501

--- Comment #5 from mgruber  ---
Thanks to Irfan Skiljan, the author of IrfanView, the problems inside Wine was
found:

In 4.62 IrfanView introduced a new option, which is enabled by default:
Options -> Properties/Settings -> Viewing
-> Apply PNG/TIF/TGA/DDS/EPS/RAW (or Edit->Paste) alpha transparent color

This combines a clipboard pasted 32BPP image coming with an Alpha channel with
the window color.

If this option is disabled, pasting works.

Irfan Skiljan concluded that there must be a bug in Wine with the clipboard
handling of bitmaps with Alpha channels.