Screen capture via WinAPI (security)

Question

Is it possible to determine that now my screen (or window of my C++ program) is being captured by any of the running programs on the PC?

:) I thought about winapi, does it leave logs of calls to certain functions — sergej.p, Mar 30 '22 at 07:27

score 3 · Accepted Answer · answered Mar 30 '22 at 07:28

3

It seems there is no way to detect a screen capture until now But you can use SetWindowDisplayAffinity to protect the window content from being captured or copied only when the Desktop Window Manager(DWM) is composing the desktop.

answered Mar 30 '22 at 07:28

YangXiaoPo-MSFT

3

It should be noted that in the interests of security, any _malicious_ tool such as RAT software can typically bypass or hijack and mimic the graphics driver and/or hook the OS kernel. If it does this properly, you will be unable to detect that anything is watching and even the OS will be oblivious to it. – paddy Mar 30 '22 at 07:34

1 Answers1