How to Get Screenshot on Windows ?

[Vladimir Panteleev via Digitalmars-d-learn]

On Sunday, 28 May 2017 at 04:05:47 UTC, Softwarez wrote:
> Hi can anyone please help me how to get screenshot on Windows 
> using D, because all the other threads are using linux to get 
> screenshot.

In the same way you'd do it in C.

Here is a more convoluted D example in the form of a program I 
had lying around. It takes a screenshot of a window with alpha 
transparency, by taking two screenshots with white and black 
background, and calculating the alpha channel from those:

https://dump.thecybershadow.net/e6e1fc9bb0da97dbe0b198a243aac31c/windowscr.d

It uses my image library for bitmap manipulation:
https://github.com/CyberShadow/ae