#include "LtTLB.h"
L_LTTLB_API L_INT L_TBGetCallback (pToolbar, ppCallback, ppUserData )
Returns the current callback function used to notify the user about toolbar events.
Pointer to a toolbar handle.
Pointer to the current callback function set by the user. If there is no callback currently set by the user, this function will return NULL.
Void pointer to be updated with the value of any user-defined data associated with the callback. If you are not interested in the user-defined data, pass NULL for this parameter.
Value | Meaning |
---|---|
SUCCESS | The function was successful. |
< 1 | An error occurred. Refer to Return Codes |
To set the callback function used to notify the user of toolbar events, call L_TBSetCallback.
Required DLLs and Libraries
LTTLB
For a listing of the exact DLLs and Libraries needed, based on the toolkit version, refer to Files To Be Included With Your Application.
L_BOOL TBGetCallbackExample (pTOOLBARHANDLE pLeadToolbar, L_INT *nRet )
{
/* check the validity of the toolbar handle */
*nRet = L_TBIsValid ( pLeadToolbar );
if ( *nRet == SUCCESS )
{
pTOOLBARCALLBACK pCallback = NULL;
L_VOID * pUserData = NULL;
/* get the current toolbar callback */
*nRet = L_TBGetCallback ( pLeadToolbar, &pCallback, &pUserData ) ;
if ( NULL != pCallback )
return TRUE ;
else
return FALSE ;
}
else
return FALSE ;
}