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An Image Decoder Based on IImgCtx

, 25 May 2004
This article shows how to decode image with IImgCtx interface provided by IE
#if !defined(AFX_WNDIMGCTX_H__2C4E9C0C_6700_4D8C_9534_62D3EEE700D0__INCLUDED_)
#define AFX_WNDIMGCTX_H__2C4E9C0C_6700_4D8C_9534_62D3EEE700D0__INCLUDED_

#if _MSC_VER > 1000
#pragma once
#endif // _MSC_VER > 1000
// WndImgCtx.h : header file
//

#include <IImgCtx.h>

/////////////////////////////////////////////////////////////////////////////
// CWndImgCtx window

class CWndImgCtx : public CWnd
{
// Construction
public:
	CWndImgCtx();

// Attributes
public:

// Operations
public:
	HRESULT StartDecode(LPCTSTR pszFilename);
	HBITMAP GetBitmap();
	int GetImageWidth(){return m_sizeImage.cx;};
	int GetImageHeight(){return m_sizeImage.cy;};
	BOOL CheckState();

// Overrides
	// ClassWizard generated virtual function overrides
	//{{AFX_VIRTUAL(CWndImgCtx)
	//}}AFX_VIRTUAL

// Implementation
public:
	virtual ~CWndImgCtx();

protected:
	void OnDraw(HDC hdcDraw);

	IImgCtx *   m_pImgCtx;      // Used when decoding the interface
    HPALETTE    m_hPal;         // the palette to use if in palette mode.
	CSize		m_sizeImage;
	
	// Generated message map functions
protected:
	//{{AFX_MSG(CWndImgCtx)
	afx_msg void OnDestroy();
	//}}AFX_MSG
	DECLARE_MESSAGE_MAP()
};

/////////////////////////////////////////////////////////////////////////////

HBITMAP GetBitmapFromFile(LPCTSTR pszFilename);

//{{AFX_INSERT_LOCATION}}
// Microsoft Visual C++ will insert additional declarations immediately before the previous line.

#endif // !defined(AFX_WNDIMGCTX_H__2C4E9C0C_6700_4D8C_9534_62D3EEE700D0__INCLUDED_)

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About the Author

strnghrs
Web Developer
China China
No Biography provided

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