#pragma once #ifndef CANVAS_INCLUDED #define CANVAS_INCLUDED //#include "tcommon.h" #include "tw/tw.h" #undef DVAPI #undef DVVAR #ifdef TWIN_EXPORTS #define DVAPI DV_EXPORT_API #define DVVAR DV_EXPORT_VAR #else #define DVAPI DV_IMPORT_API #define DVVAR DV_IMPORT_VAR #endif class DVAPI TCanvas : public TWidget { protected: public: TCanvas(TWidget *parent, string name = "canvas"); ~TCanvas(); virtual void draw(); }; #endif