Black screen when capturing from multiple clients

I had a game bot that worked by image recognition and I’m trying to use Direct3DHook so it can detect images in background

The problem is that sometimes I’m getting black screens as result:

I guess the bot is trying to process images before they’re captured.

I don’t understand why processing images is an async method while processing them takes only a few miliseconds.

For example, trying to do: CaptureImage(); Thread.Sleep(1000); It will only do the Sleep but not the CaptureImage();

[Kuhicop]

Not being able to make this work: GetScreenshot

I’ve just tested now by replacing the btnCapture_Click event code with var res = _captureProcess.CaptureInterface.GetScreenshot();

I get null as return

[Aks-4125]

I am also getting null at _captureProcess.CaptureInterface.GetScreenshot();