Re: How to read rectangular part of screen, pixel-by-pixel?

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  • Posted by jimcbrown (admin) Jun 23, 2013
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TheresNoTime said...
jimcbrown said...

GetDC is the correct function to do this.

You can BitBlt from the value returned by GetDC to a screen buffer created by CreateCompatibleDC - color.exw does this. You should be able to read the values from there.

I think there are too many intermediate transformations. Is it possible to copy the data from the Device Context directly to the sequence? I assume that this will turn out a one-dimensional array, where the pixels are following each other. May be, with some trash data (BMP header?). I would arrange it.

What will you do with the sequence once you have it?

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