Hi I've successfully implemented it so the window is transparent but now anything i draw to the window is also transparent (e.g. the blue square here is drawn with an alpha of 1). Does anyone know what I am doing wrong?
This is related to the default settings enabled after a certain system update in Windows. It seems that it only affects the vm test. You can see the solution in other replies. I tried to find a code-level solution, but I am not a professional developer, I am very lazy, I didn't try it.