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DXcam unable to capture windows on secondary monitor in multi-4K display setup #109

@hxypqr

Description

@hxypqr

Hi, thank you for the great library!

I’m using dxcam on Windows 11 with two 4K monitors arranged side-by-side. Capturing works fine when the target window is on the primary monitor, but fails (returns None or empty frames) when the same window is moved to the secondary monitor.

Setup:

  • OS: Windows 11
  • Monitors: Dual 4K (side-by-side)
  • dxcam version: 0.0.5
  • Python version: 3.9.18

Issue:

Using dxcam.create(title="...") fails unless the window is on the primary display. It seems multi-monitor support is limited or not working by default in this version.

Is there a recommended way to:

  • Capture windows located on the second monitor?
  • Specify which display device or output index to use?

Thanks in advance!

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