Question

Possible Duplicate:
Passing parameters to _beginthreadex

How can I call TestFunction2 instead of TestFunction1 in ExecuteLocalThread using beginthreadex as TestFunction2 contains 3 additional parameters

unsigned __stdcall TestFunction1(void* timerPointer)
{
    unsigned result =0;
    printf("thread is running\n");
    return result;
}

unsigned __stdcall TestFunction2(void* timerPointer, wchar_t *appId, wchar_t *userName, wchar_t *password)
{
    unsigned result =0;
    printf("thread is running\n");
    return result;
}

void ExecuteLocalThread()
{
    HANDLE   heartBeatThread;
    unsigned int hbThreadID;
    heartBeatThread = (HANDLE)_beginthreadex(NULL, 0 , &TestFunction1, (void*)this, CREATE_SUSPENDED, &hbThreadID);
    ResumeThread( heartBeatThread );
}

Answer 1

Create a struct which contains all the data you want to pass then pass a pointer to that into your thread entrypoint

typedef struct MyThreadData {
    void* timerPointer;
    wchar_t *appId;
    wchar_t *userName;
    wchar_t *password;
}; MyThreadData


unsigned int hbThreadID;
void* threadData = calloc(1, sizeof(*threadData));
/* populate threadData */
heartBeatThread = (HANDLE)_beginthreadex(NULL, 0,
                               &TestFunction1, threadData,
                               CREATE_SUSPENDED, &hbThreadID);


unsigned __stdcall TestFunction1(void* ptr) {
    MyThreadData* threadData = (MyThreadData*)ptr;
    unsigned result;
    printf("thread is running\n");
    result = TestFunction2(ptr->timerPointer, ptr->appId, ptr->userName, ptr->password);
    free(threadData);
    return result;
}

unsigned __stdcall TestFunction2(void* timerPointer, wchar_t *appId, wchar_t *userName, wchar_t *password) {
    unsigned result =0;
    return result;
}