PHONE_REPLYThe PHONE_REPLY message is sent to an application' to report the results of function call that completed asynchronously. PHONE_REPLY
hPhone = (HPHONE) 0; dwCallbackInstance = (DWORD) hCallback; dwParam1 = (DWORD) idRequest; dwParam2 = (DWORD) Status; dwParam3 = (DWORD) 0; Parameters hDevice Unused. dwCallbackInstance Returns the application's callback instance. dwParam1 The request ID for which this is the reply. dwParam2 The success or error indication. The application should cast this parameter into a LONG. Zero indicates success; a negative number indicates an error. dwParam3 Unused. Return Values No return value. Remarks Functions that operate asynchronously return a positive request ID value to the application. This request ID is returned with the reply message to identify the request that was completed. The other parameter for the PHONE_REPLY message carries the success or failure indication. Possible errors are the same as those defined by the corresponding function. This message cannot be disabled.
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