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(Unicode C) Get the LastErrorText for an Asynchronous Method CallSee more Async ExamplesDemonstrates how to get the LastErrorText information for a Chilkat method called asynchronously.
#include <C_CkSocketW.h> #include <C_CkTaskW.h> void ChilkatSample(void) { HCkSocketW socket; int maxWaitMs; HCkTaskW task; BOOL success; // This example requires the Chilkat API to have been previously unlocked. // See Global Unlock Sample for sample code. socket = CkSocketW_Create(); // The Async call simply creates the task. The "Connect" method has not yet been called. maxWaitMs = 5000; // Let's intentionally cause this connect to fail by giving it an invalid domain.. task = CkSocketW_ConnectAsync(socket,L"amazonbladflakjsdflksadjf.com",443,TRUE,maxWaitMs); if (CkSocketW_getLastMethodSuccess(socket) == FALSE) { wprintf(L"%s\n",CkSocketW_lastErrorText(socket)); CkSocketW_Dispose(socket); return; } // Start the background thread to run the task. success = CkTaskW_Run(task); if (!success) { wprintf(L"%s\n",CkTaskW_lastErrorText(task)); CkTaskW_Dispose(task); CkSocketW_Dispose(socket); return; } // The application is now free to do anything else // For this example, we'll simply sleep and periodically // check to see if the Socket Connect if finished. while (CkTaskW_getFinished(task) != TRUE) { // Sleep 1 ms. CkTaskW_SleepMs(task,1); } // If the task completed, it means the method (in this case the Connect method) was called and returned success or failure. if (CkTaskW_getStatusInt(task) != 7) { wprintf(L"Task did not complete.\n"); wprintf(L"task status: %s\n",CkTaskW_status(task)); CkTaskW_Dispose(task); CkSocketW_Dispose(socket); return; } // Get the success/failure of the Connect // (This is the return value of the Connect method had it been called synchronously) success = CkTaskW_GetResultBool(task); if (success == FALSE) { // Get the LastErrorText for the Connect method call. // Had we called Connect synchronously, we would've simply accessed the socket object's LastErrorText property. // Instead, we get the task object's ResultErrorText. wprintf(L"%s\n",CkTaskW_resultErrorText(task)); } else { wprintf(L"Connect succeeded.\n"); } CkTaskW_Dispose(task); CkSocketW_Dispose(socket); } |
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