Syntax
VM_RESULT vm_gsm_tel_call_reg_listener(
    vm_gsm_tel_call_listener_callback callback
);
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vm_gsm_tel_call_reg_listener
Syntax
VM_RESULT vm_gsm_tel_call_reg_listener(
    vm_gsm_tel_call_listener_callback callback
);
Description

APP uses this function to register a callback function to listen to call events. The user_data for the callback function will be provided by the underneath native.

Parameters
Parameters 
Description 
vm_gsm_tel_call_listener_callback callback 
[IN] A callback function, reference vm_gsm_tel_call_listener_callback 
Returns

It returns 0, if the callback is registered successfully. It returns -2, 

if the parameter is invalid. It returns -3, when out of resources. It 

returns -4 or less, if there is an internal error.

File

vmgsm_tel.h

Group
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