DirectShow Source filter using Dekstop window as source

Question

I am looking for examples of a DirectShow Source filter that would display a Desktop Window. I am sure there should be examples, but I haven't yet found them. Perhaps I am using the wrong terminology.

This is for grabbing live output of a Window, and processing that has video.

Lee

Answer 1

In DirectShow SDK there is a sample filter called PushSource and inside there is PushSourceDesktop. Compile it, register ("regsvr32 PushSource.ax") and insert into your graph as a source filter.

Answer 2

Its mentioned at
https://docs.microsoft.com/en-us/windows/win32/directshow/push-source-filters-sample

Source code for sample push source filter is at
https://github.com/microsoft/Windows-classic-samples/tree/master/Samples/Win7Samples/multimedia/directshow/filters/pushsource