//////////////////////////////////////////////////////////
#ifndef __TRANSPARENTIMAGE_H_TRANSPARENTIMAGE_42A6E395_97E4_11D3_B6F0_005004024A9E
#define __TRANSPARENTIMAGE_H_TRANSPARENTIMAGE_42A6E395_97E4_11D3_B6F0_005004024A9E
#if _MSC_VER >= 1000
#pragma once
#endif
class CTransparentImage : public CStatic
{
public:
CTransparentImage() ;
virtual ~CTransparentImage() ;
protected:
//{{AFX_MSG( CTransparentImage )
afx_msg void OnPaint() ;
//}}AFX_MSG
DECLARE_MESSAGE_MAP()
} ;
//{{AFX_INSERT_LOCATION}}
#endif //////////////////////////////////////////////////////////////
#include "StdAfx.h"
#include "TransparentImage.h"
#ifdef _DEBUG
#define new DEBUG_NEW
#undef THIS_FILE
static char THIS_FILE[] = __FILE__ ;
#endif CTransparentImage::CTransparentImage()
{
} CTransparentImage::~CTransparentImage()
{
} BEGIN_MESSAGE_MAP( CTransparentImage, CStatic )
//{{AFX_MSG_MAP( CTransparentImage )
ON_WM_PAINT()
//}}AFX_MSG_MAP
END_MESSAGE_MAP() void CTransparentImage::OnPaint()
{
HBITMAP l_hbmpBitmap = GetBitmap() ;
if( l_hbmpBitmap == NULL )
{
Default() ;
return ;
}
CPaintDC l_PaintDC( this ) ;
CRect l_rcClient ;
GetClientRect( &l_rcClient ) ;
CDC l_MaskDC ;
l_MaskDC.CreateCompatibleDC( &l_PaintDC ) ;
CBitmap l_MaskBitmap ;
l_MaskBitmap.CreateBitmap( l_rcClient.Width(), l_rcClient.Height(),
1, 1, NULL ) ;
CBitmap* l_pOldMaskBitmap = l_MaskDC.SelectObject( &l_MaskBitmap ) ;
CDC l_MemoryDC ;
l_MemoryDC.CreateCompatibleDC( &l_PaintDC ) ;
CBitmap* l_pOldMemoryBitmap =
l_MemoryDC.SelectObject( CBitmap::FromHandle( l_hbmpBitmap ) ) ;
COLORREF l_crOldBack =l_MemoryDC.SetBkColor( RGB( 255, 0, 255 ) ) ;
l_MaskDC.BitBlt( 0, 0, l_rcClient.Width(), l_rcClient.Height(), &l_MemoryDC,
0, 0, SRCCOPY ) ;
l_PaintDC.BitBlt( 0, 0, l_rcClient.Width(), l_rcClient.Height(), &l_MemoryDC,
0, 0, SRCINVERT ) ;
l_PaintDC.BitBlt( 0, 0, l_rcClient.Width(), l_rcClient.Height(), &l_MaskDC,
0, 0, SRCAND ) ;
l_PaintDC.BitBlt( 0, 0, l_rcClient.Width(), l_rcClient.Height(), &l_MemoryDC,
0, 0, SRCINVERT ) ;
l_MemoryDC.SelectObject( l_pOldMemoryBitmap ) ;
l_MaskDC.SelectObject( l_pOldMaskBitmap ) ;
} |