External libraries & dlls - [HELP] Injectable DLL, without function calling.

void MainThread()
{
again:
    SystemProcessesScan();
    Sleep(350);
    goto again;
}

extern  "C"  __declspec(dllexport) void Main() {
	CreateThread(NULL,NULL,LPTHREAD_START_ROUTINE(Main  Thread),NULL,0,0);
}

BOOL h = false;
BOOL APIENTRY DllMain( HANDLE hModule, 
                       DWORD  ul_reason_for_call, 
                       LPVOID lpReserved
					   )
{

	if(!h) {
		CreateThread(NULL,NULL,LPTHREAD_START_ROUTINE(Main  Thread),NULL,0,0);
		h = true;
	}
    return TRUE;
}