A Read-Only Combo with Selectable Text

/////////////////////////////////////////////////////////////////////////////
// Copyright (C) 2001-2002 by David Yuheng Zhao
//
// Distribute and change freely, except: don't remove my name from the source 
//
// No warrantee of any kind, express or implied, is included with this
// software; use at your own risk, responsibility for damages (if any) to
// anyone resulting from the use of this software rests entirely with the
// user.
//
// Partly based on the _ThemeHelper struct in MFC7.0 source code (winctrl3.cpp), 
// and the difference is that this implementation wraps the full set of 
// visual style APIs from the platform SDK August 2001
//
// If you have any questions, I can be reached as follows:
//	yuheng_zhao@yahoo.com
//
//
// How to use:
// Instead of calling the API directly, 
//    OpenThemeData(...);
// use the global variable
//    g_xpStyle.OpenThemeData(...);
//
// DP 21/05/2004: Modified to make into singleton and add several functions.
//
/////////////////////////////////////////////////////////////////////////////
#include "stdAfx.h"
#include "visualstylesxp.h"

#define	nCOMCTL_VERSION_XP				MAKELONG(0, 6)			// Windows XP (themes) ComCtl
#define	nCOMCTL_VERSION_WIN4				MAKELONG(0, 4)			// Win95 ComCtl 
#define	sCOMCTL32_DLLNAME					_T("COMCTL32.dll")	// ComCtl32 DLL

// DP 21/05/2004: Modified to make into singleton and export
//CVisualStylesXP g_xpStyle;

CVisualStylesXP *CVisualStylesXP::m_pVisualStylesXP = NULL;

CVisualStylesXP * CVisualStylesXP::GetInstance ()
{
	if (!m_pVisualStylesXP)
	{
		m_pVisualStylesXP = new CVisualStylesXP;
	}

	return m_pVisualStylesXP;
}

//	Deletes the instance of the singleton.
void CVisualStylesXP::DeleteInstance ()
{
	if (m_pVisualStylesXP)
	{
		delete m_pVisualStylesXP;
		m_pVisualStylesXP = NULL;
	}
}

CVisualStylesXP::CVisualStylesXP(void)
{
	m_hThemeDll = LoadLibrary(_T("UxTheme.dll"));

	// Initialise version
	m_nComCtl32Version = -1;
}

CVisualStylesXP::~CVisualStylesXP(void)
{
	if (m_hThemeDll!=NULL)
		FreeLibrary(m_hThemeDll);
	m_hThemeDll = NULL;
}

void* CVisualStylesXP::GetProc(LPCSTR szProc, void* pfnFail)
{
	void* pRet = pfnFail;
	if (m_hThemeDll != NULL)
		pRet = GetProcAddress(m_hThemeDll, szProc);
	return pRet;
}

HTHEME CVisualStylesXP::OpenThemeData(HWND hwnd, LPCWSTR pszClassList)
{
	PFNOPENTHEMEDATA pfnOpenThemeData = (PFNOPENTHEMEDATA)GetProc("OpenThemeData", (void*)OpenThemeDataFail);
	return (*pfnOpenThemeData)(hwnd, pszClassList);
}

HRESULT CVisualStylesXP::CloseThemeData(HTHEME hTheme)
{
	PFNCLOSETHEMEDATA pfnCloseThemeData = (PFNCLOSETHEMEDATA)GetProc("CloseThemeData", (void*)CloseThemeDataFail);
	return (*pfnCloseThemeData)(hTheme);
}

HRESULT CVisualStylesXP::DrawThemeBackground(HTHEME hTheme, HDC hdc, 
											 int iPartId, int iStateId, const RECT *pRect, const RECT *pClipRect)
{
	PFNDRAWTHEMEBACKGROUND pfnDrawThemeBackground = 
		(PFNDRAWTHEMEBACKGROUND)GetProc("DrawThemeBackground", (void*)DrawThemeBackgroundFail);
	return (*pfnDrawThemeBackground)(hTheme, hdc, iPartId, iStateId, pRect, pClipRect);
}

// DP: 16/07/2004 Added this function to wrap the whole process in one function
// Return false if themes not activated
bool CVisualStylesXP::DrawThemeBackgroundPart(HWND hwnd, LPCWSTR pszClassList, HDC hdc, 
											 int iPartId, int iStateId, const RECT *pRect, const RECT *pClipRect)
{
	if (CVisualStylesXP::GetInstance()->IsAppUsingThemes())
	{
		// Open data
		HTHEME hTheme = CVisualStylesXP::GetInstance()->OpenThemeData(hwnd, pszClassList);

		// Draw the background
		VERIFY( CVisualStylesXP::GetInstance()->DrawThemeBackground(hTheme, hdc, iPartId, iStateId, pRect, pClipRect) == S_OK);

		// Clean up
		CVisualStylesXP::GetInstance()->CloseThemeData(hTheme);

		return true;
	}
	else
	{
		return false;
	}
}

// DP: 21/05/2004 Added this function copied from Davide Calabro to permit use in CXPStyleButtonST
HRESULT CVisualStylesXP::DrawThemeBackground(HTHEME hTheme, HWND hWnd, HDC hdc, int iPartId, int iStateId, RECT* pRect, const RECT* pClipRect)
{
  // First draw parent background 
  DrawThemeParentBackground(hWnd, hdc, pRect);

  // Then draw theme background
  return DrawThemeBackground(hTheme, hdc, iPartId, iStateId, pRect, pClipRect);
} // End of DrawThemeBackground

// DP: 24/05/2004 Added this function as the definitive, yes-or-no, do-I-or-don't-I, are-we-using-themes-or-not function
// It's required because IsAppThemed does not, as its cunningly disguised name might imply, tell you whether the app is themed
bool CVisualStylesXP::IsAppUsingThemes()
{
	// If we have the correct COMCTL32 version AND IsAppThemed AND IsThemeActive return true, then true
	return (GetComCtl32Version() >= nCOMCTL_VERSION_XP && IsThemeActive() && IsAppThemed());
}

// DP: 24/05/2004 Nicked this from MFC and modified it (MFC doesn't export it)
struct AFX_DLLVERSIONINFO
{
		DWORD cbSize;
		DWORD dwMajorVersion;                   // Major version
		DWORD dwMinorVersion;                   // Minor version
		DWORD dwBuildNumber;                    // Build number
		DWORD dwPlatformID;                     // DLLVER_PLATFORM_*
};

typedef HRESULT (CALLBACK* AFX_DLLGETVERSIONPROC)(AFX_DLLVERSIONINFO *);

DWORD CVisualStylesXP::GetComCtl32Version()
{
	// If we haven't obtained the version...
	if (m_nComCtl32Version == -1)
	{
		// otherwise determine comctl32.dll version via DllGetVersion
		HINSTANCE hInst = ::GetModuleHandle(sCOMCTL32_DLLNAME);
		ASSERT(hInst != NULL);

		if (hInst != NULL)
		{
			AFX_DLLGETVERSIONPROC pfn;
			pfn = (AFX_DLLGETVERSIONPROC)GetProcAddress(hInst, "DllGetVersion");
			DWORD dwVersion = nCOMCTL_VERSION_WIN4;
			if (pfn != NULL)
			{
				AFX_DLLVERSIONINFO dvi;
				memset(&dvi, 0, sizeof(dvi));
				dvi.cbSize = sizeof(dvi);
				HRESULT hr = (*pfn)(&dvi);
				if (SUCCEEDED(hr))
				{
					ASSERT(dvi.dwMajorVersion <= 0xFFFF);
					ASSERT(dvi.dwMinorVersion <= 0xFFFF);
					dwVersion = MAKELONG(dvi.dwMinorVersion, dvi.dwMajorVersion);
				}
			}

			// Store in member variable
			m_nComCtl32Version = dwVersion;
		}
	}

	// Return member
	return m_nComCtl32Version;
}

HRESULT CVisualStylesXP::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", (void*)DrawThemeTextFail);
	return (*pfn)(hTheme, hdc, iPartId, iStateId, pszText, iCharCount, dwTextFlags, dwTextFlags2, pRect);
}
HRESULT CVisualStylesXP::GetThemeBackgroundContentRect(HTHEME hTheme,  HDC hdc, 
													   int iPartId, int iStateId,  const RECT *pBoundingRect, 
													   RECT *pContentRect)
{
	PFNGETTHEMEBACKGROUNDCONTENTRECT pfn = (PFNGETTHEMEBACKGROUNDCONTENTRECT)GetProc("GetThemeBackgroundContentRect", (void*)GetThemeBackgroundContentRectFail);
	return (*pfn)(hTheme,  hdc, iPartId, iStateId,  pBoundingRect, pContentRect);
}
HRESULT CVisualStylesXP::GetThemeBackgroundExtent(HTHEME hTheme,  HDC hdc,
												  int iPartId, int iStateId, const RECT *pContentRect, 
												  RECT *pExtentRect)
{
	PFNGETTHEMEBACKGROUNDEXTENT pfn = (PFNGETTHEMEBACKGROUNDEXTENT)GetProc("GetThemeBackgroundExtent", (void*)GetThemeBackgroundExtentFail);
	return (*pfn)(hTheme, hdc, iPartId, iStateId, pContentRect, pExtentRect);
}
HRESULT CVisualStylesXP::GetThemePartSize(HTHEME hTheme, HDC hdc, 
										  int iPartId, int iStateId, RECT * pRect, enum THEMESIZE eSize, SIZE *psz)
{
	PFNGETTHEMEPARTSIZE pfnGetThemePartSize = 
		(PFNGETTHEMEPARTSIZE)GetProc("GetThemePartSize", (void*)GetThemePartSizeFail);
	return (*pfnGetThemePartSize)(hTheme, hdc, iPartId, iStateId, pRect, eSize, psz);
}

HRESULT CVisualStylesXP::GetThemeTextExtent(HTHEME hTheme, HDC hdc, 
											int iPartId, int iStateId, LPCWSTR pszText, int iCharCount, 
											DWORD dwTextFlags,  const RECT *pBoundingRect, 
											RECT *pExtentRect)
{
	PFNGETTHEMETEXTEXTENT pfn = (PFNGETTHEMETEXTEXTENT)GetProc("GetThemeTextExtent", (void*)GetThemeTextExtentFail);
	return (*pfn)(hTheme, hdc, iPartId, iStateId, pszText, iCharCount, dwTextFlags,  pBoundingRect, pExtentRect);
}

HRESULT CVisualStylesXP::GetThemeTextMetrics(HTHEME hTheme,  HDC hdc, 
											 int iPartId, int iStateId,  TEXTMETRIC* ptm)
{
	PFNGETTHEMETEXTMETRICS pfn = (PFNGETTHEMETEXTMETRICS)GetProc("GetThemeTextMetrics", (void*)GetThemeTextMetricsFail);
	return (*pfn)(hTheme, hdc, iPartId, iStateId,  ptm);
}

HRESULT CVisualStylesXP::GetThemeBackgroundRegion(HTHEME hTheme,  HDC hdc,  
												  int iPartId, int iStateId, const RECT *pRect,  HRGN *pRegion)
{
	PFNGETTHEMEBACKGROUNDREGION pfn = (PFNGETTHEMEBACKGROUNDREGION)GetProc("GetThemeBackgroundRegion", (void*)GetThemeBackgroundRegionFail);
	return (*pfn)(hTheme, hdc, iPartId, iStateId, pRect, pRegion);
}

HRESULT CVisualStylesXP::HitTestThemeBackground(HTHEME hTheme,  HDC hdc, int iPartId, 
												int iStateId, DWORD dwOptions, const RECT *pRect,  HRGN hrgn, 
												POINT ptTest,  WORD *pwHitTestCode)
{
	PFNHITTESTTHEMEBACKGROUND pfn = (PFNHITTESTTHEMEBACKGROUND)GetProc("HitTestThemeBackground", (void*)HitTestThemeBackgroundFail);
	return (*pfn)(hTheme, hdc, iPartId, iStateId, dwOptions, pRect, hrgn, ptTest, pwHitTestCode);
}

HRESULT CVisualStylesXP::DrawThemeEdge(HTHEME hTheme, HDC hdc, int iPartId, int iStateId, 
									   const RECT *pDestRect, UINT uEdge, UINT uFlags,   RECT *pContentRect)
{
	PFNDRAWTHEMEEDGE pfn = (PFNDRAWTHEMEEDGE)GetProc("DrawThemeEdge", (void*)DrawThemeEdgeFail);
	return (*pfn)(hTheme, hdc, iPartId, iStateId, pDestRect, uEdge, uFlags, pContentRect);
}

HRESULT CVisualStylesXP::DrawThemeIcon(HTHEME hTheme, HDC hdc, int iPartId, 
									   int iStateId, const RECT *pRect, HIMAGELIST himl, int iImageIndex)
{
	PFNDRAWTHEMEICON pfn = (PFNDRAWTHEMEICON)GetProc("DrawThemeIcon", (void*)DrawThemeIconFail);
	return (*pfn)(hTheme, hdc, iPartId, iStateId, pRect, himl, iImageIndex);
}

BOOL CVisualStylesXP::IsThemePartDefined(HTHEME hTheme, int iPartId, 
										 int iStateId)
{
	PFNISTHEMEPARTDEFINED pfn = (PFNISTHEMEPARTDEFINED)GetProc("IsThemePartDefined", (void*)IsThemePartDefinedFail);
	return (*pfn)(hTheme, iPartId, iStateId);
}

BOOL CVisualStylesXP::IsThemeBackgroundPartiallyTransparent(HTHEME hTheme, 
															int iPartId, int iStateId)
{
	PFNISTHEMEBACKGROUNDPARTIALLYTRANSPARENT pfn = (PFNISTHEMEBACKGROUNDPARTIALLYTRANSPARENT)GetProc("IsThemeBackgroundPartiallyTransparent", (void*)IsThemeBackgroundPartiallyTransparentFail);
	return (*pfn)(hTheme, iPartId, iStateId);
}

HRESULT CVisualStylesXP::GetThemeColor(HTHEME hTheme, int iPartId, 
									   int iStateId, int iPropId,  COLORREF *pColor)
{
	PFNGETTHEMECOLOR pfn = (PFNGETTHEMECOLOR)GetProc("GetThemeColor", (void*)GetThemeColorFail);
	return (*pfn)(hTheme, iPartId, iStateId, iPropId, pColor);
}

HRESULT CVisualStylesXP::GetThemeMetric(HTHEME hTheme,  HDC hdc, int iPartId, 
										int iStateId, int iPropId,  int *piVal)
{
	PFNGETTHEMEMETRIC pfn = (PFNGETTHEMEMETRIC)GetProc("GetThemeMetric", (void*)GetThemeMetricFail);
	return (*pfn)(hTheme, hdc, iPartId, iStateId, iPropId, piVal);
}

HRESULT CVisualStylesXP::GetThemeString(HTHEME hTheme, int iPartId, 
										int iStateId, int iPropId,  LPWSTR pszBuff, int cchMaxBuffChars)
{
	PFNGETTHEMESTRING pfn = (PFNGETTHEMESTRING)GetProc("GetThemeString", (void*)GetThemeStringFail);
	return (*pfn)(hTheme, iPartId, iStateId, iPropId, pszBuff, cchMaxBuffChars);
}

HRESULT CVisualStylesXP::GetThemeBool(HTHEME hTheme, int iPartId, 
									  int iStateId, int iPropId,  BOOL *pfVal)
{
	PFNGETTHEMEBOOL pfn = (PFNGETTHEMEBOOL)GetProc("GetThemeBool", (void*)GetThemeBoolFail);
	return (*pfn)(hTheme, iPartId, iStateId, iPropId, pfVal);
}

HRESULT CVisualStylesXP::GetThemeInt(HTHEME hTheme, int iPartId, 
									 int iStateId, int iPropId,  int *piVal)
{
	PFNGETTHEMEINT pfn = (PFNGETTHEMEINT)GetProc("GetThemeInt", (void*)GetThemeIntFail);
	return (*pfn)(hTheme, iPartId, iStateId, iPropId, piVal);
}

HRESULT CVisualStylesXP::GetThemeEnumValue(HTHEME hTheme, int iPartId, 
										   int iStateId, int iPropId,  int *piVal)
{
	PFNGETTHEMEENUMVALUE pfn = (PFNGETTHEMEENUMVALUE)GetProc("GetThemeEnumValue", (void*)GetThemeEnumValueFail);
	return (*pfn)(hTheme, iPartId, iStateId, iPropId, piVal);
}

HRESULT CVisualStylesXP::GetThemePosition(HTHEME hTheme, int iPartId, 
										  int iStateId, int iPropId,  POINT *pPoint)
{
	PFNGETTHEMEPOSITION pfn = (PFNGETTHEMEPOSITION)GetProc("GetThemePosition", (void*)GetThemePositionFail);
	return (*pfn)(hTheme, iPartId, iStateId, iPropId, pPoint);
}

HRESULT CVisualStylesXP::GetThemeFont(HTHEME hTheme,  HDC hdc, int iPartId, 
									  int iStateId, int iPropId,  LOGFONT *pFont)
{
	PFNGETTHEMEFONT pfn = (PFNGETTHEMEFONT)GetProc("GetThemeFont", (void*)GetThemeFontFail);
	return (*pfn)(hTheme, hdc, iPartId, iStateId, iPropId, pFont);
}

HRESULT CVisualStylesXP::GetThemeRect(HTHEME hTheme, int iPartId, 
									  int iStateId, int iPropId,  RECT *pRect)
{
	PFNGETTHEMERECT pfn = (PFNGETTHEMERECT)GetProc("GetThemeRect", (void*)GetThemeRectFail);
	return (*pfn)(hTheme, iPartId, iStateId, iPropId, pRect);
}

HRESULT CVisualStylesXP::GetThemeMargins(HTHEME hTheme,  HDC hdc, int iPartId, 
										 int iStateId, int iPropId,  RECT *prc,  MARGINS *pMargins)
{
	PFNGETTHEMEMARGINS pfn = (PFNGETTHEMEMARGINS)GetProc("GetThemeMargins", (void*)GetThemeMarginsFail);
	return (*pfn)(hTheme, hdc, iPartId, iStateId, iPropId, prc, pMargins);
}

HRESULT CVisualStylesXP::GetThemeIntList(HTHEME hTheme, int iPartId, 
										 int iStateId, int iPropId,  INTLIST *pIntList)
{
	PFNGETTHEMEINTLIST pfn = (PFNGETTHEMEINTLIST)GetProc("GetThemeIntList", (void*)GetThemeIntListFail);
	return (*pfn)(hTheme, iPartId, iStateId, iPropId, pIntList);
}

HRESULT CVisualStylesXP::GetThemePropertyOrigin(HTHEME hTheme, int iPartId, 
												int iStateId, int iPropId,  enum PROPERTYORIGIN *pOrigin)
{
	PFNGETTHEMEPROPERTYORIGIN pfn = (PFNGETTHEMEPROPERTYORIGIN)GetProc("GetThemePropertyOrigin", (void*)GetThemePropertyOriginFail);
	return (*pfn)(hTheme, iPartId, iStateId, iPropId, pOrigin);
}

HRESULT CVisualStylesXP::SetWindowTheme(HWND hwnd, LPCWSTR pszSubAppName, 
										LPCWSTR pszSubIdList)
{
	PFNSETWINDOWTHEME pfn = (PFNSETWINDOWTHEME)GetProc("SetWindowTheme", (void*)SetWindowThemeFail);
	return (*pfn)(hwnd, pszSubAppName, pszSubIdList);
}

HRESULT CVisualStylesXP::GetThemeFilename(HTHEME hTheme, int iPartId, 
										  int iStateId, int iPropId,  LPWSTR pszThemeFileName, int cchMaxBuffChars)
{
	PFNGETTHEMEFILENAME pfn = (PFNGETTHEMEFILENAME)GetProc("GetThemeFilename", (void*)GetThemeFilenameFail);
	return (*pfn)(hTheme, iPartId, iStateId, iPropId,  pszThemeFileName, cchMaxBuffChars);
}

COLORREF CVisualStylesXP::GetThemeSysColor(HTHEME hTheme, int iColorId)
{
	PFNGETTHEMESYSCOLOR pfn = (PFNGETTHEMESYSCOLOR)GetProc("GetThemeSysColor", (void*)GetThemeSysColorFail);
	return (*pfn)(hTheme, iColorId);
}

HBRUSH CVisualStylesXP::GetThemeSysColorBrush(HTHEME hTheme, int iColorId)
{
	PFNGETTHEMESYSCOLORBRUSH pfn = (PFNGETTHEMESYSCOLORBRUSH)GetProc("GetThemeSysColorBrush", (void*)GetThemeSysColorBrushFail);
	return (*pfn)(hTheme, iColorId);
}

BOOL CVisualStylesXP::GetThemeSysBool(HTHEME hTheme, int iBoolId)
{
	PFNGETTHEMESYSBOOL pfn = (PFNGETTHEMESYSBOOL)GetProc("GetThemeSysBool", (void*)GetThemeSysBoolFail);
	return (*pfn)(hTheme, iBoolId);
}

int CVisualStylesXP::GetThemeSysSize(HTHEME hTheme, int iSizeId)
{
	PFNGETTHEMESYSSIZE pfn = (PFNGETTHEMESYSSIZE)GetProc("GetThemeSysSize", (void*)GetThemeSysSizeFail);
	return (*pfn)(hTheme, iSizeId);
}

HRESULT CVisualStylesXP::GetThemeSysFont(HTHEME hTheme, int iFontId,  LOGFONT *plf)
{
	PFNGETTHEMESYSFONT pfn = (PFNGETTHEMESYSFONT)GetProc("GetThemeSysFont", (void*)GetThemeSysFontFail);
	return (*pfn)(hTheme, iFontId, plf);
}

HRESULT CVisualStylesXP::GetThemeSysString(HTHEME hTheme, int iStringId, 
										   LPWSTR pszStringBuff, int cchMaxStringChars)
{
	PFNGETTHEMESYSSTRING pfn = (PFNGETTHEMESYSSTRING)GetProc("GetThemeSysString", (void*)GetThemeSysStringFail);
	return (*pfn)(hTheme, iStringId, pszStringBuff, cchMaxStringChars);
}

HRESULT CVisualStylesXP::GetThemeSysInt(HTHEME hTheme, int iIntId, int *piValue)
{
	PFNGETTHEMESYSINT pfn = (PFNGETTHEMESYSINT)GetProc("GetThemeSysInt", (void*)GetThemeSysIntFail);
	return (*pfn)(hTheme, iIntId, piValue);
}

BOOL CVisualStylesXP::IsThemeActive()
{
	PFNISTHEMEACTIVE pfn = (PFNISTHEMEACTIVE)GetProc("IsThemeActive", (void*)IsThemeActiveFail);
	return (*pfn)();
}

BOOL CVisualStylesXP::IsAppThemed()
{
	PFNISAPPTHEMED pfnIsAppThemed = (PFNISAPPTHEMED)GetProc("IsAppThemed", (void*)IsAppThemedFail);
	return (*pfnIsAppThemed)();
}

HTHEME CVisualStylesXP::GetWindowTheme(HWND hwnd)
{
	PFNGETWINDOWTHEME pfn = (PFNGETWINDOWTHEME)GetProc("GetWindowTheme", (void*)GetWindowThemeFail);
	return (*pfn)(hwnd);
}

HRESULT CVisualStylesXP::EnableThemeDialogTexture(HWND hwnd, DWORD dwFlags)
{
	PFNENABLETHEMEDIALOGTEXTURE pfn = (PFNENABLETHEMEDIALOGTEXTURE)GetProc("EnableThemeDialogTexture", (void*)EnableThemeDialogTextureFail);
	return (*pfn)(hwnd, dwFlags);
}

BOOL CVisualStylesXP::IsThemeDialogTextureEnabled(HWND hwnd)
{
	PFNISTHEMEDIALOGTEXTUREENABLED pfn = (PFNISTHEMEDIALOGTEXTUREENABLED)GetProc("IsThemeDialogTextureEnabled", (void*)IsThemeDialogTextureEnabledFail);
	return (*pfn)(hwnd);
}

DWORD CVisualStylesXP::GetThemeAppProperties()
{
	PFNGETTHEMEAPPPROPERTIES pfn = (PFNGETTHEMEAPPPROPERTIES)GetProc("GetThemeAppProperties", (void*)GetThemeAppPropertiesFail);
	return (*pfn)();
}

void CVisualStylesXP::SetThemeAppProperties(DWORD dwFlags)
{
	PFNSETTHEMEAPPPROPERTIES pfn = (PFNSETTHEMEAPPPROPERTIES)GetProc("SetThemeAppProperties", (void*)SetThemeAppPropertiesFail);
	(*pfn)(dwFlags);
}

HRESULT CVisualStylesXP::GetCurrentThemeName(
	LPWSTR pszThemeFileName, int cchMaxNameChars, 
	LPWSTR pszColorBuff, int cchMaxColorChars,
	LPWSTR pszSizeBuff, int cchMaxSizeChars)
{
	PFNGETCURRENTTHEMENAME pfn = (PFNGETCURRENTTHEMENAME)GetProc("GetCurrentThemeName", (void*)GetCurrentThemeNameFail);
	return (*pfn)(pszThemeFileName, cchMaxNameChars, pszColorBuff, cchMaxColorChars, pszSizeBuff, cchMaxSizeChars);
}

HRESULT CVisualStylesXP::GetThemeDocumentationProperty(LPCWSTR pszThemeName,
													   LPCWSTR pszPropertyName,  LPWSTR pszValueBuff, int cchMaxValChars)
{
	PFNGETTHEMEDOCUMENTATIONPROPERTY pfn = (PFNGETTHEMEDOCUMENTATIONPROPERTY)GetProc("GetThemeDocumentationProperty", (void*)GetThemeDocumentationPropertyFail);
	return (*pfn)(pszThemeName, pszPropertyName, pszValueBuff, cchMaxValChars);
}


HRESULT CVisualStylesXP::DrawThemeParentBackground(HWND hwnd, HDC hdc,  RECT* prc)
{
	PFNDRAWTHEMEPARENTBACKGROUND pfn = (PFNDRAWTHEMEPARENTBACKGROUND)GetProc("DrawThemeParentBackground", (void*)DrawThemeParentBackgroundFail);
	return (*pfn)(hwnd, hdc, prc);
}

HRESULT CVisualStylesXP::EnableTheming(BOOL fEnable)
{
	PFNENABLETHEMING pfn = (PFNENABLETHEMING)GetProc("EnableTheming", (void*)EnableThemingFail);
	return (*pfn)(fEnable);
}