References ▼
#include "LtCon.h"
L_LTCON_API L_INT L_ContainerGetCallback(pContainer, ppCallback, ppUserData)
Gets the current user-installed callback function that is used to inform the user about container events.
Pointer to a container handle.
Pointer to the variable to be updated with the current user callback function address.
Pointer to the variable to be updated with a pointer to the current user data.
| Value | Meaning |
|---|---|
| SUCCESS | The function was successful. |
| < 1 | An error occurred. Refer to Return Codes. |
If there is no user callback function currently installed, the function returns NULL for the ppCallback and ppUserData.
Required DLLs and Libraries
This function will determine if the container is installed or not.
L_BOOL ContainerGetCallbackExample(pCONTAINERHANDLE pContainer,pCONTAINERCALLBACK* ppConCallback,L_INT * nRet,L_VOID **ppUserData){*nRet = L_ContainerIsValid ( pContainer );if ( *nRet == SUCCESS ) /* check the validity of container handle */{/* get the container callback functoin pointer */*nRet = L_ContainerGetCallback ( pContainer, ppConCallback, ppUserData ) ;if(*nRet != SUCCESS)return FALSE;if ( NULL != *ppConCallback ){return TRUE ;}else{return FALSE ;}}else{return FALSE ;}}