Syntax
VM_DCL_STATUS vm_dcl_register_callback(
    VM_DCL_HANDLE device_handle, 
    VM_DCL_EVENT event, 
    vm_dcl_callback callback, 
    void* user_data
);
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vm_dcl_register_callback
Syntax
VM_DCL_STATUS vm_dcl_register_callback(
    VM_DCL_HANDLE device_handle, 
    VM_DCL_EVENT event, 
    vm_dcl_callback callback, 
    void* user_data
);
Description

Registers a callback to listen to the events from a device specified by the device_handle. The callback enables an asynchronous operation between the application and the device.

Parameters
Parameters 
Description 
VM_DCL_HANDLE device_handle 
[IN] The handle of the targeted device, which is returned by vm_dcl_open(). 
VM_DCL_EVENT event 
[IN] Identifies in what condition that the callback is triggered by. 
vm_dcl_callback callback 
[IN] The callback function to be registered. 
void* user_data 
[IN] The additional data to be passed to this callback function. The real type of this value should be vm_dcl_callback_data_t. The detail of this structure is given by the driver. 
Returns
File

vmdcl.h

Group
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