DLL main 函数注意事项 switch

switch (ul_reason_for_call)
	{
	case DLL_PROCESS_ATTACH:
		{		
			LPCWSTR pcw = L"DLL_PROCESS_ATTACH";
			GetChu::udpclient.Send((PVOID)pcw,wcslen(pcw)*2+2);
			getchu.Start();
			break;
		}		
	case DLL_THREAD_ATTACH:
		break;
	case DLL_THREAD_DETACH:
		break;
	case DLL_PROCESS_DETACH:
		{
			LPCWSTR pcw = L"ProcessDetach";
			GetChu::udpclient.Send((PVOID)pcw,wcslen(pcw)*2+2);
			getchu.Close();
			ShowNumber(1);
			break;
		}		
	}

注意vc 默认是所有的case都放在一起的,必须每一个都break,否则DLL_PROCESS_DETACH里面会响应 DLL_PROCESS_ATTACH,DLL_THREAD_ATTACH,......等等的消息

因为switch语法的关系