CBackBuffer

#include <GDIUtils.h>

Inheritance diagram for CBackBuffer:

Public Member Functions
	CBackBuffer ()
	~CBackBuffer ()
BOOL	Allocate (CSize size, HDC dcCompatible=NULL)
void	Attach (HBITMAP bmp, CSize size)
void	Attach (HBITMAP bmp)
void	Dispose ()
BOOL	GetBitmapPtr (t_uint8 *&ptr, t_ssize &lineWidth)
CSize	GetSize () const

Data Fields
PFC_CLASS_NOT_COPYABLE_EX(CBackBuffer) private CBitmap	m_bitmap
HBITMAP	m_bitmapOld

Detailed Description

Definition at line 156 of file GDIUtils.h.

Constructor & Destructor Documentation

CBackBuffer::CBackBuffer ( )

inline

Definition at line 158 of file GDIUtils.h.

                  : m_bitmapOld(NULL), m_curSize(0,0) {
        CreateCompatibleDC(NULL);
        ATLASSERT(m_hDC != NULL);
    }

CBackBuffer::~CBackBuffer ( )

inline

Definition at line 162 of file GDIUtils.h.

                   {
        Dispose();
    }

Member Function Documentation

BOOL CBackBuffer::Allocate ( CSize  size, HDC  dcCompatible = NULL  )

inline

Definition at line 176 of file GDIUtils.h.

                                                       {
        if (m_hDC == NULL) return FALSE;
        if (m_curSize == size) return TRUE;
        Dispose();
        HBITMAP temp;
        if (dcCompatible == NULL) {
            temp = CreateDIB24(size);
        } else {
            temp = CreateCompatibleBitmap(dcCompatible, size.cx, size.cy);
        }
        if (temp == NULL) return FALSE;
        Attach(temp);
        return TRUE;
    }

void CBackBuffer::Attach ( HBITMAP  bmp, CSize  size  )

inline

Definition at line 165 of file GDIUtils.h.

                                         {
        Dispose();
        m_bitmap.Attach(bmp); m_curSize = size;
        m_bitmapOld = SelectBitmap(m_bitmap);
    }

void CBackBuffer::Attach ( HBITMAP  bmp )

inline

Definition at line 170 of file GDIUtils.h.

                             {
        CSize size; 
        bool state = CBitmapHandle(bmp).GetSize(size);
        ATLASSERT(state);
        Attach(bmp, size);
    }

void CBackBuffer::Dispose ( )

inline

Definition at line 191 of file GDIUtils.h.

                   {
        if (m_bitmap != NULL) {
            SelectBitmap(m_bitmapOld); m_bitmapOld = NULL;
            m_bitmap.DeleteObject();
        }
        m_curSize = CSize(0,0);
    }

BOOL CBackBuffer::GetBitmapPtr ( t_uint8 *&  ptr, t_ssize &  lineWidth  )

inline

Definition at line 198 of file GDIUtils.h.

                                                            {
        if (m_bitmap == NULL) return FALSE;
        BITMAP bmp = {};
        if (!m_bitmap.GetBitmap(bmp)) return FALSE;
        lineWidth = bmp.bmWidthBytes;
        ptr = reinterpret_cast<t_uint8*>(bmp.bmBits);
        return TRUE;
    }

CSize CBackBuffer::GetSize ( ) const

inline

Definition at line 206 of file GDIUtils.h.

{ return m_curSize; }

Field Documentation

PFC_CLASS_NOT_COPYABLE_EX (CBackBuffer) private CBitmap CBackBuffer::m_bitmap

Definition at line 208 of file GDIUtils.h.

HBITMAP CBackBuffer::m_bitmapOld

Definition at line 212 of file GDIUtils.h.

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The documentation for this class was generated from the following file:

• foobar2000/ATLHelpers/GDIUtils.h