Sample: WindowsEvent.cpp

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//------------------------------------------------------------------------------
//
//  SimConnect Windows Event Sample
// 
//    Description:
//                Requests a four second timing event, and implements a Windows
//                Event handler to minimize processing time
//------------------------------------------------------------------------------

#include <windows.h>
#include <tchar.h>
#include <stdio.h>

#include "SimConnect.h"


static enum EVENT_ID {
    EVENT_4S,
};

int quit = 0;
HANDLE hSimConnect = NULL;

static int tick = 0;

void CALLBACK MyDispatchProcWE(SIMCONNECT_RECV* pData, DWORD cbData, void *pContext)
{
    switch(pData->dwID)
    {
        case SIMCONNECT_RECV_ID_EVENT:
        {
            SIMCONNECT_RECV_EVENT *evt = (SIMCONNECT_RECV_EVENT*)pData;
            switch(evt->uEventID)
            { 
            case EVENT_4S:
                printf("\n4 second timer: %d", ++tick);
                break;

            default:
                printf("\nSIMCONNECT_RECV_EVENT: 0x%08X 0x%08X 0x%X", evt->uEventID, evt->dwData, cbData);
                break;
            }
            break;
        }

        case SIMCONNECT_RECV_ID_QUIT:
        {
            quit = 1;
            break;
        }

        default:
            printf("\nUNKNOWN DATA RECEIVED: pData=%p cbData=%d\n", pData, cbData);
            break;
    }
}

bool testWindowsEvent()
{
    HANDLE hEventHandle = ::CreateEvent(NULL, FALSE, FALSE, NULL);
    if(hEventHandle == NULL)
    {
        printf("Error: Event creation failed!");
        return false;
    }

    HRESULT hr;

    if (SUCCEEDED(SimConnect_Open(&hSimConnect;, "Windows Event", NULL, 0, hEventHandle, 0)))
    {
        printf("\nConnected...!");

        // Subscribe to the four second timer

        hr = SimConnect_SubscribeToSystemEvent(hSimConnect, EVENT_4S, "4sec");

        // Check for messages only when a Windows event has been received

        while( 0 == quit && ::WaitForSingleObject(hEventHandle, INFINITE) == WAIT_OBJECT_0)
        {
            SimConnect_CallDispatch(hSimConnect, MyDispatchProcWE, NULL);
        } 

        CloseHandle(hEventHandle);
        hr = SimConnect_Close(hSimConnect);
        return true;
    }
    return false;
}

int __cdecl _tmain(int argc, char* argv[])
{
    bool ok = testWindowsEvent();
    return 0; 
}