www.pudn.com > ButtonDemo.rar > ThemeHelper.cpp

#include "stdafx.h" 
#include "ThemeHelper.h" 
 
#ifdef _DEBUG 
#undef THIS_FILE 
static char THIS_FILE[]=__FILE__; 
#define new DEBUG_NEW 
#endif 
 
CThemeHelper::CThemeHelper() 
{ 
	// Load DLL. This call will fails (and return NULL) if 
	// we are not running under Windows XP (or greater) 
	m_hDll = ::LoadLibrary(_T("UxTheme.dll")); 
} 
 
CThemeHelper::~CThemeHelper() 
{ 
	// Unload DLL (if any) 
	if (m_hDll)	::FreeLibrary(m_hDll); 
	m_hDll = NULL; 
} 
 
LPVOID CThemeHelper::GetProc(LPCSTR szProc, LPVOID pfnFail) 
{ 
	LPVOID lpRet = pfnFail; 
 
	if (m_hDll) 
		lpRet = GetProcAddress(m_hDll, szProc); 
 
	return lpRet; 
} // End of GetProc 
 
HTHEME CThemeHelper::OpenThemeData(HWND hwnd, LPCWSTR pszClassList) 
{ 
	PFNOPENTHEMEDATA pfnOpenThemeData = (PFNOPENTHEMEDATA)GetProc("OpenThemeData", (LPVOID)OpenThemeDataFail); 
	return (*pfnOpenThemeData)(hwnd, pszClassList); 
} // End of OpenThemeData 
 
HRESULT CThemeHelper::CloseThemeData(HTHEME hTheme) 
{ 
	PFNCLOSETHEMEDATA pfnCloseThemeData = (PFNCLOSETHEMEDATA)GetProc("CloseThemeData", (LPVOID)CloseThemeDataFail); 
	return (*pfnCloseThemeData)(hTheme); 
} // End of CloseThemeData 
 
HRESULT CThemeHelper::DrawThemeBackground(HTHEME hTheme, HDC hdc, int iPartId, int iStateId, const RECT* pRect, const RECT* pClipRect) 
{ 
	PFNDRAWTHEMEBACKGROUND pfnDrawThemeBackground = (PFNDRAWTHEMEBACKGROUND)GetProc("DrawThemeBackground", (LPVOID)DrawThemeBackgroundFail); 
	return (*pfnDrawThemeBackground)(hTheme, hdc, iPartId, iStateId, pRect, pClipRect); 
} // End of DrawThemeBackground 
 
HRESULT CThemeHelper::DrawThemeText(HTHEME hTheme, HDC hdc, int iPartId, int iStateId, LPCWSTR pszText, int iCharCount, DWORD dwTextFlags, DWORD dwTextFlags2, const RECT *pRect) 
{ 
	PFNDRAWTHEMETEXT pfn = (PFNDRAWTHEMETEXT)GetProc("DrawThemeText", (LPVOID)DrawThemeTextFail); 
	return (*pfn)(hTheme, hdc, iPartId, iStateId, pszText, iCharCount, dwTextFlags, dwTextFlags2, pRect); 
} // End of DrawThemeText 
 
BOOL CThemeHelper::IsAppThemed() 
{ 
	PFNISAPPTHEMED pfnIsAppThemed = (PFNISAPPTHEMED)GetProc("IsAppThemed", (LPVOID)IsAppThemedFail); 
	return (*pfnIsAppThemed)(); 
} // End of IsAppThemed 
 
BOOL CThemeHelper::IsThemeActive() 
{ 
	PFNISTHEMEACTIVE pfn = (PFNISTHEMEACTIVE)GetProc("IsThemeActive", (LPVOID)IsThemeActiveFail); 
	return (*pfn)(); 
} // End of IsThemeActive