include/win32/decl.h

#include <extern.h>
#include <windows.h>

class _EXTERN_ rom_DC
{
public:

        rom_DC(HDC _dc):DC(_dc){}

        int GetLogPixelsX() const throw()
        {
                return GetDeviceCaps(DC, LOGPIXELSX);
        }

        int GetLogPixelsY() const throw()
        {
                return GetDeviceCaps(DC, LOGPIXELSY);
        }

        int     MMVToPix(int _mm) const throw()
        {
                return GetLogPixelsY()*_mm/2540;
        }

protected:

        HDC DC;
};

class _EXTERN_ rom_DCAuto:public rom_DC
{
public:

        rom_DCAuto(HDC _dc):rom_DC(_dc){}

        ~rom_DCAuto(){DeleteDC(DC);}

        operator HDC(){return DC;}

};

class _EXTERN_ rom_DCDefault:public rom_DC
{
public:

        rom_DCDefault():rom_DC(NULL){}

private:

        static int      LogPixelSx;

        static int      LogPixelSy;

};