style: Add macros to enable/disable client building features

client/ScreenManager.h

@@ -10,6 +10,13 @@
 #endif // _MSC_VER > 1000
 
 #include "Manager.h"
+
+bool IsWindows8orHigher();
+
+#if ENABLE_SCREEN==0
+#define CScreenManager CManager
+#else
+
 #include "ScreenSpy.h"
 #include "ScreenCapture.h"
 
@@ -21,8 +28,6 @@ struct IAudioCaptureClient;
 
 bool LaunchApplication(TCHAR* pszApplicationFilePath, TCHAR* pszDesktopName);
 
-bool IsWindows8orHigher();
-
 BOOL IsRunningAsSystem();
 
 class IOCPClient;
@@ -121,4 +126,6 @@ public:
     void HandleAudioCtrl(BYTE enable, BYTE persist);  // 处理音频控制命令
 };
 
+#endif
+
 #endif // !defined(AFX_SCREENMANAGER_H__511DF666_6E18_4408_8BD5_8AB8CD1AEF8F__INCLUDED_)