Cocos2d-x error c2061

A newbie will encounter an error. When your header file needs to reload some functions, an error will be reported if using_ns_cc is not added.

For example, the touch screen function must be overwritten.

// Touchdelegate
Virtual bool cctouchbegan (cctouch * ptouch, ccevent * pevent );

If there is no namespace, cctouch cannot be recognized. The error is as follows:

: Error c2061: syntax error: identifier "cctouch"

Error c2511: "void mainmenu: cctouchmoved (cocos2d: cctouch *, cocos2d: ccevent *)": the overloaded member function is not found in "mainmenu ".
1> D: \ cocos2d-x \ cocos2d-2.0-x-2.0.4 \ cocos2d-2.0-x-2.0.4 \ test \ proj. Win32 \ mainmenu. H (13): See the statement of mainmenu