PreviewWnd.cpp

Go to the documentation of this file.

// PreviewWnd.cpp : implementation file
//

#include "stdafx.h"
#include "gme.h"
#include "PreviewWnd.h"

#ifdef _DEBUG
#define new DEBUG_NEW
#undef THIS_FILE
static char THIS_FILE[] = __FILE__;
#endif

// CPreviewBtn

CPreviewBtn::CPreviewBtn()
{
        m_bitmapDC = NULL;
}

CPreviewBtn::~CPreviewBtn()
{
        if (m_bitmapDC) 
        {
                CBitmap *bmp = m_bitmapDC->GetCurrentBitmap();
                delete m_bitmapDC; 
                if (bmp)
                        delete bmp;
        }
}


BEGIN_MESSAGE_MAP(CPreviewBtn, CButton)
        //{{AFX_MSG_MAP(CPreviewBtn)
        //}}AFX_MSG_MAP
END_MESSAGE_MAP()


// CPreviewBtn message handlers
void CPreviewBtn::DrawItem( LPDRAWITEMSTRUCT lpDrawItemStruct)
{
        if (lpDrawItemStruct->itemAction == ODA_DRAWENTIRE)
        {
                CDC dc;
                dc.Attach(lpDrawItemStruct->hDC); // device context for painting
                RECT rect;
                GetClientRect(&rect);
                CRect crect(rect);
                CRect vrect = crect;

                dc.SetMapMode(MM_TEXT);
                dc.DPtoLP(&vrect);
                if (!m_bitmapDC)
                        return;

                m_bitmapDC->SetMapMode(MM_TEXT);
                // TODO: Error checking
                dc.BitBlt(0, 0, vrect.Width(), vrect.Height(), m_bitmapDC, 0, 0, SRCCOPY);
                dc.Detach(); 
        }
}