How to break continuous grabbing from the camera?

Hi, colleagues.

I am working with my web camera. And I start grabbing from this camera. But I do it like that:


dev_open_window(0, 0, 640, 480, 'black', WindowHandle)
open_framegrabber ('DirectShow', 1, 1, 0, 0, 0, 0, 'default', \
                   8, 'rgb', -1, 'false', 'default', \
                   '[0] Logitech HD Webcam C270', 0, -1, AcqHandle)

status:=true

while (status)
    grab_image (Image, AcqHandle)
    * Do something
    dev_display(Image)
endwhile
close_framegrabber (AcqHandle)



I I need to press any key  for quit from 'while' code.
I just want to know: is it possible to stop 'while' the code with key pressing?
Can you help me?

1. get_mbutton — Wait until a mouse button is pressed.
   
2. 1: Left button,
   
3. 2: Middle button,
   
4. 4: Right button,
   
5. 8: Shift key,
   
6. 16: Ctrl key,
   
7. 32: Alt key.

复制代码

It will cause blockage.

or use serial communication, send some chars to terminated it from other program (use open_serial.)

simulation software：https://www.51halcon.com/forum.p ... &tid=289&fromuid=25

Hi, Jedi Knight!

Thank you for your answer.

But I need the solution without freezing the process )))