Halcon Interface > Executing Commands

Command execution is carried out via the special parameter 'do_execute' in the 'set_framegrabber_param' function. The 'do_execute' parameter is only supported on handles referencing the tree's root node.

After opening a stereo camera, you can capture a depth image by simply executing the three commands, with default parameters:

set_framegrabber_param (RootHandle, 'do_execute', 'Capture')
set_framegrabber_param (RootHandle, 'do_execute', 'ComputeDisparityMap')
set_framegrabber_param (RootHandle, 'do_execute', 'ComputePointMap')

To specify additional parameters for the execution, you can simply set the Parameters node before the execution:

set_framegrabber_param (RootHandle, '/Execute/Parameters/FinalTrigger', 'All')
set_framegrabber_param (RootHandle, 'do_execute', 'Capture')

Parameters can also be specified inline in JSON notation, after the command:

set_framegrabber_param (RootHandle, 'do_execute', ['Capture', '{"FinalTrigger":"All"}'])