t = _wtoi(argv); //发送次数，缺省为1次
　if(count ==0)
　　count = 1;
　　printf("count = %d\n",count);
　dwReturn = NetMessageBufferSend(NULL, wdest, wfrom,
　　　　(LPBYTE)buffer, 2*lstrlen(buffer)); //因为buffer是Unicode编码，所以需要乘以2
　if(dwReturn == NERR_Success)
　{
　　printf("Send OK!");
　　while(count-->1)
　　{
　　　NetMessageBufferSend(NULL, wtarget, wfrom, (LPBYTE)buffe,2*lstrlen(buffer));
　　}
　　return 0;
　}
　if(dwReturn == NERR_NameNotFound)
　{
　　printf("The user name could not be found.\n");
　　return 0;
　}
　if(dwReturn == NERR_NetworkError)
　{
　　printf("A general failure occurred in the network hardware.\n");
　　return 0;
　}
　if(dwReturn == ERROR_NOT_SUPPORTED)
　{
　　printf("This network request is not supported.\n");
　　return 0;
　}
　if(dwReturn == ERROR_INVALID_PARAMETER)
　{
　　printf("The specified parameter is invalid.\n");
　　return 0;
　}
　if(dwReturn == ERROR_ACCESS_DENIED)
　{
　　printf("The user does not have access to the requested information.\n");
　　return 0;
　}
　else
　　printf("Unknown error!\n");
　　return 0;
}  

　　四、小结

　　本实例开发一个Windows信使服务程序，以帮助读者深入了解Windows信使服务实现的内幕。