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OS/2 Shareware BBS: 10 Tools
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vos2-121.zip
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tcanvas.h
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C/C++ Source or Header
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1998-07-03
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2KB
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51 lines
//========================================================================
// tcanvas.h -- header file for tutorial canvas class
//
// Copyright 1995,1996, Bruce E. Wampler, All Rights Reserved.
//========================================================================
#ifndef TCANVAS_H
#define TCANVAS_H
#include <v/vcanvas.h> // derive from vCanvasPane
typedef struct point // simple structure for points
{
int x; int y;
} point;
class tCanvasPane : public vCanvasPane
{
public: //---------------------------------------- public
tCanvasPane();
virtual ~tCanvasPane();
// Windows
virtual void Clear();
// Scrolling
virtual void HPage(int, int);
virtual void VPage(int, int);
virtual void HScroll(int);
virtual void VScroll(int);
// Events
virtual void MouseDown(int, int, int);
virtual void MouseUp(int, int, int);
virtual void MouseMove(int, int, int);
virtual void Redraw(int, int, int, int); // Expose/redraw event
virtual void Resize(int, int); // Resize event
protected: //------------------------------------- protected
private: //--------------------------------------- private
// Note that we use a leading underscore to indicate
// private call members.
int _mouseDown; // track if mouse down
int _begx; int _begy; // starting point
int _curx; int _cury; // current point
point *_pt; // the array of points
int _nextpt; // where next point goes
};
#endif