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I coded a demo application which uses https://learn.microsoft.com/en-us/windows/desktop/api/d3d9/nf-d3d9-idirect3ddevice9-getfrontbufferdata to perform screen capture of the my desktop. My problem is when i use APImonitor I can see that when I takes screen shot, my application call bitBlt. So can anyone tell me if Direct3D getfrontbufferdata is implemented using bitBlt? Is there a dependence between gidi32.dll and directX ? Thank you,

Sabri ghazi
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It seems that DirectX can choose to use bitBlt, depends on your GPU caps, texture source /destination/format/size.

Perhaps you should read this :

Fastest method of screen capturing on Windows

mofo77
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