Implement the callback
Implement the callback based on the signature in the cancel_or_refund_extern.h file and pass this as a parameter of the cancel_or_refund call. For more information on how to do this, see Implement callbacks.
Allocate the request struct
Allocates, initializes and returns a cancel_or_refund_request struct. Populate the request by performing string duplication.
If you want the data for later use, retain it, or it will be released automatically.
| Name | Description |
|---|---|
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Allocates, initializes and returns a |
Call the cancel_or_refund Function
Call the cancel_or_refund function to initiate a cancel or refund on a transaction that has been processed by the Adyen payments platform.
Parameters
| Value | Description |
|---|---|
cancel_or_refund_request |
Pointer to the cancel_or_refund_request struct, this struct contains all the input parameters for this call. |
cancel_or_refund_response |
Pointer to the callback function in the POS that will be called with the results of the cancel_or_refund call |
echo_struct |
Pointer to a POS defined struct. Returned in the callback. It can be used to share a POS data struct between the call to the library and the callback from the library in response to the call. |
Handle the callback
The cancel_or_refund_CB returns the immediate response to the call and a pointer to the POS-defined echo struct.
Parameters
| Value | Description |
|---|---|
cancel_or_refund_response |
Pointer to the callback function in the POS that will be called with the results of the cancel_or_refund call. If the refund was successful, this struct should should return a result of "refund-received". |
echo_struct |
Pointer to a POS defined struct. Returned in the callback. It can be used to share a POS data struct between the call to the library and the callback from the library in response to the call. |