Add Transparency to Windows

[Davidah121]

It is simple in Linux. Not so simple in Windows.

Below are links for transparency in Windows. (Note that one is like GIF transparency)

• https://www.codeproject.com/Articles/286/Using-the-AlphaBlend-function
• https://learn.microsoft.com/en-us/windows/win32/api/wingdi/nf-wingdi-transparentblt?source=recommendations
• https://learn.microsoft.com/en-us/windows/win32/api/wingdi/nf-wingdi-alphablend
• https://learn.microsoft.com/en-us/windows/win32/gdi/alpha-blending-a-bitmap?redirectedfrom=MSDN

[Davidah121]

Working in Windows. Due to some complications, this only works with borderless windows. These require using a LayeredWindow style and the title bar associated with normal windows does not show properly. Needs to be tested in Linux.