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(Visual FoxPro) Understanding Async Function Return ValuesSee more Async ExamplesExplains how to get the return value of the function called synchonously in the background thread.
LOCAL loSock LOCAL lnSuccess LOCAL loTask LOCAL lnCount LOCAL s LOCAL loConnection LOCAL loAcceptedConnection * Some Chilkat functions can be called asynchronously. * If a function "Func" can be called asynchronously, there will be a corresponding "FuncAsync" function that returns a Task object. * * When Task.Run is called, the synchronous "Func" runs in a background thread. * * For Chilkat methods that return a status (1/0), get returned value by calling GetResultBool. * For example.. * For versions of Chilkat < 10.0.0, use CreateObject('Chilkat_9_5_0.Socket') loSock = CreateObject('Chilkat.Socket') * -------------------------------------------------------------- * Synchronous call returning 1/0 lnSuccess = loSock.Connect("example.com",443,1,5000) * -------------------------------------------------------------- * Asynchronous call loTask = loSock.ConnectAsync("example.com",443,1,5000) * ... loTask.Run() * ... * ... * Get the status (1/0) value returned by the synchronous method called in the background thread. lnSuccess = loTask.GetResultBool() * -------------------------------------------------------------- * Synchronous call returning an integer lnCount = loSock.ReceiveCount() * -------------------------------------------------------------- * Asynchronous call loTask = loSock.ReceiveCountAsync() * ... loTask.Run() * ... * ... * Get the integer value returned by the synchronous method called in the background thread. lnCount = loTask.GetResultInt() * -------------------------------------------------------------- * Synchronous call returning an string s = loSock.ReceiveString() * -------------------------------------------------------------- * Asynchronous call loTask = loSock.ReceiveStringAsync() * ... loTask.Run() * ... * ... * Get the string value returned by the synchronous method called in the background thread. s = loTask.GetResultString() * -------------------------------------------------------------- * Synchronous call returning an object loConnection = loSock.AcceptNextConnection(5000) * -------------------------------------------------------------- * Asynchronous call loTask = loSock.AcceptNextConnectionAsync() * ... loTask.Run() * ... * ... * Get the object returned by the synchronous method called in the background thread. * We do this a little differently. We create an new object of the same type, * and then load it with the returned object (assuming it was not null). * For versions of Chilkat < 10.0.0, use CreateObject('Chilkat_9_5_0.Socket') loAcceptedConnection = CreateObject('Chilkat.Socket') IF (loTask.TaskSuccess = 1) THEN lnSuccess = loAcceptedConnection.LoadTaskResult(loTask) ENDIF RELEASE loSock RELEASE loAcceptedConnection |
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