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248
PICam™ 5.x Programmer’s Manual
Issue 11
7.4.9.3
PicamAdvanced_RegisterForExtrinsicIntegerValueChanged()
Description
PicamAdvanced_RegisterForExtrinsicIntegerValueChanged()
registers a
function to call when the integer value for specified hardware parameter has changed
due to external influences (e.g., representing the status of hardware).
NOTE:
Multiple functions may be registered. When this is the case,
the functions are called in the order in which they have
been registered.
Registered callbacks are called asynchronously on another thread.
NOTE:
PicamAdvanced_UnregisterForExtrinsicIntegerVal
ueChanged()
must be called to unregister each callback
once it is no longer required.
Syntax
PicamAdvanced_RegisterForExtrinsicIntegerValueChanged()
is:
PICAM_API PicamAdvanced_RegisterForExtrinsicIntegerValueChanged(
PicamHandle device_or_accessory,
PicamParameter parameter,
PicamIntegerValueChangedCallback changed);
Input Parameters
Input parameters for
PicamAdvanced_RegisterForExtrinsicIntegerValueChanged()
Output Parameters
There are no output parameters associated with
PicamAdvanced_RegisterForExtrinsicIntegerValueChanged()
Related APIs
For additional information, refer to the following related APIs:
•
PicamAdvanced_UnregisterForExtrinsicIntegerValueChanged()
.
device_or_accessory:
Handle for the hardware for which the callback is being
registered.
parameter:
The parameter for which the callback is being registered.
changed:
The name assigned to the callback function being registered.
Содержание Princeton Instruments PICam 5.x
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