Windows : Make a window transparent using Win32?

Windows : Make a window transparent using Win32?
To Access My Live Chat Page,
On Google, Search for "hows tech developer connect"

I promised to share a hidden feature with you, and here it is.
This is a YouTube's feature which works on Desktop.
First, Ensure that the video is playing before proceeding.
Next, enter the letters 'awesome' on your keyboard.
The progress bar on YouTube will be altered to a flashing rainbow.

An introduction to myself in a few words,
Nice to meet you, I am Delphi.
I can help you find the answers you are looking for.
Windows : Make a window transparent using Win32?
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using Win32? a window : Windows transparent Make