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並前往https://www.jianshu.com/p/6806c9dcaae0

lua_pcall(): attempt to call a nil value - 简书

lua_getglobal (L,"on_touch");. lua_pushinteger(L,ntouch);. error = lua_pcall(L,1,0,0);. if(error). {. printf("\n%s\n",lua_tostring(L,-1));.

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