style: Add macros to enable/disable client building features

client/TalkManager.cpp

@@ -9,6 +9,8 @@
 #include <IOSTREAM>
 #include <mmsystem.h>
 
+#if ENABLE_MESSAGE
+
 #pragma comment(lib, "WINMM.LIB")
 
 #define ID_TIMER_POP_WINDOW		1
@@ -153,3 +155,4 @@ VOID CTalkManager::OnDlgTimer(HWND hDlg)   //时钟回调
     }
     }
 }
+#endif