is_FreeImageMem

USB 2.0

USB 3.0

GigE

USB 2.0

USB 3.0

GigE

Syntax

INT is_FreeImageMem (HIDS hCam, char* pcImgMem, INT id)

Description

is_FreeImageMem() releases an image memory that was allocated using is_AllocImageMem() and removes it from the driver management.

Hinweis

If the memory was not allocated using an SDK function, you need to call is_FreeImageMem() as well. Otherwise, there may be errors when the driver keeps trying to access this memory.

This does however not release the memory. So you need to make sure that the memory will be released again.

Input parameters

hCam	Camera handle
pcImgMem	Points to the starting address of the memory (e.g. set in the is_AllocImageMem() function)
id	ID of this memory

Return values

IS_CANT_ADD_TO_SEQUENCE	The image memory is already included in the sequence and cannot be added again.
IS_CANT_CLEANUP_MEMORY	The driver could not release the allocated memory.
IS_CANT_COMMUNICATE_WITH_DRIVER	Communication with the driver failed because no driver has been loaded.
IS_CANT_OPEN_DEVICE	An attempt to initialize or select the camera failed (no camera connected or initialization error).
IS_INVALID_CAMERA_HANDLE	Invalid camera handle
IS_INVALID_MEMORY_POINTER	Invalid pointer or invalid memory ID
IS_INVALID_PARAMETER	One of the submitted parameters is outside the valid range or is not supported for this sensor or is not available in this mode.
IS_IO_REQUEST_FAILED	An IO request from the uEye driver failed. Possibly the versions of the ueye_api.dll (API) and the driver file (ueye_usb.sys or ueye_eth.sys) do not match.
IS_NO_SUCCESS	General error message
IS_SUCCESS	Function executed successfully

Related functions

•is_AllocImageMem()

Suggestion for improvement? Send us your short Feedback on this chapter. Thank you very much!

For technical questions please contact you local distributor or use the support form on our website.

Home > C: Programming > Function descriptions >	History back Previous chapter Next chapter Print
is_FreeImageMem