www.pudn.com > Chap16.rar > Background.h

//----------------------------------------------------------------- 
// Background Object 
// C++ Header - Background.h 
//----------------------------------------------------------------- 
 
#pragma once 
 
//----------------------------------------------------------------- 
// Include Files 
//----------------------------------------------------------------- 
#include  
#include "Bitmap.h" 
 
//----------------------------------------------------------------- 
// Background Class 
//----------------------------------------------------------------- 
class Background 
{ 
protected: 
  // Member Variables 
  int       m_iWidth, m_iHeight; 
  COLORREF  m_crColor; 
  Bitmap*   m_pBitmap; 
 
public: 
  // Constructor(s)/Destructor 
          Background(int iWidth, int iHeight, COLORREF crColor); 
          Background(Bitmap* pBitmap); 
  virtual ~Background(); 
 
  // General Methods 
  virtual void  Update(); 
  virtual void  Draw(HDC hDC); 
 
  // Accessor Methods 
  int GetWidth()  { return m_iWidth; }; 
  int GetHeight() { return m_iHeight; }; 
}; 
 
//----------------------------------------------------------------- 
// Starry Background Class 
//----------------------------------------------------------------- 
class StarryBackground : Background 
{ 
protected: 
  // Member Variables 
  int       m_iNumStars; 
  int       m_iTwinkleDelay; 
  POINT     m_ptStars[100]; 
  COLORREF  m_crStarColors[100]; 
 
public: 
  // Constructor(s)/Destructor 
          StarryBackground(int iWidth, int iHeight, int iNumStars = 100, 
            int iTwinkleDelay = 50); 
  virtual ~StarryBackground(); 
 
  // General Methods 
  virtual void  Update(); 
  virtual void  Draw(HDC hDC); 
};