www.pudn.com > JPGGIF.zip > Picture.h

 
 
 
 
#pragma once 
 
 
 
 
////////////////// 
// Picture object--encapsulates IPicture 
// 
class CPicture  
{ 
 
public: 
	CPicture(); 
	~CPicture(); 
 
	// Load frm various sosurces 
	BOOL Load(HINSTANCE hInst, UINT nIDRes); 
	BOOL Load(LPCTSTR pszPathName); 
	BOOL Load(IStream* pstm); 
 
	// render to device context 
	BOOL Render(HDC dc, RECT* rc, LPCRECT prcMFBounds=NULL) const; 
 
	SIZE GetImageSize(HDC dc=NULL) const; 
 
	operator IPicture*() { 
		return m_spIPicture; 
	} 
 
	void GetHIMETRICSize(OLE_XSIZE_HIMETRIC& cx, OLE_YSIZE_HIMETRIC& cy) const { 
		cx = cy = 0; 
		const_cast(this)->m_hr = m_spIPicture->get_Width(&cx); 
		const_cast(this)->m_hr = m_spIPicture->get_Height(&cy); 
	} 
 
	void Free() { 
		if (m_spIPicture) { 
			m_spIPicture.Release(); 
		} 
	} 
 
protected: 
 
	void SetHIMETRICtoDP(HDC hdc, SIZE* sz) const; 
 
	CComQIPtr m_spIPicture; // ATL smart pointer to IPicture 
	HRESULT m_hr; // last error code 
};