www.pudn.com > commspy.rar > util_mdc.h

 
// util_mdc.h 
 
#ifndef _INC_UTIL_MDC_ 
#define _INC_UTIL_MDC_ 
 
 
 
class GMemDC : public CDC 
{ 
public: 
   // create a memory dc 
   BOOL Create(CDC *pDC,             // device from which to create compatible dc 
               const RECT& rClient,  // client rectangle of window receiving paint message  
               CBrush *pBkBrush=NULL,// brush to paint background of memory DC, default is brush of 'pDC' 
               const PAINTSTRUCT *pPS=NULL); // paint struct if 'pDC' is actually a CPaintDC 
    
   // copy this memory dc to a dc 
   BOOL Copy(CDC *pDC,              // device to copy memory dc to 
             const RECT& rDraw,     // destination rectangle of 'pDC' 
             const POINT *ppt=NULL);// top-left corner of mem dc 
                                    
   // release the memory dc 
   BOOL Release();                    
 
   // return the internal paint structure 
   const PAINTSTRUCT *GetPaintStruct() const; 
 
public: 
   GMemDC(); 
   ~GMemDC(); 
 
private: 
   PAINTSTRUCT m_ps;                 // copy of paint dc paint structure 
 
   BOOL bPaintStructInitialized;     // internal paint structure is initialized  
   CBitmap *pOldBitmap;              // bitmap to restore when dc is released 
   CBitmap Bitmap;                   // bitmap to select in create 
 
   // privatize compiler gifts 
   GMemDC( const GMemDC& ); 
   GMemDC& operator=( const GMemDC& ); 
}; 
 
 
#endif