Adding XP Visual Style Support to OWNERDRAW Controls using HTHEME Wrapper

Pål K Tønder
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A wrapper class to use the visual styles APIs available in Windows XP
In this article, you will see a wrapper class for the HTHEME handle used in connection with the Visual Styles API available in Windows XP. The class is heavily based on the CVisualStylesXP class by David Yuheng Zhao.
themewrapper_src.zip
#ifndef _THEME_H_
#define _THEME_H_

#pragma once

#include <uxtheme.h>
#include <tmschema.h>

#ifndef WM_THEMECHANGED
#define WM_THEMECHANGED                 0x031A
#endif

class CXPTheme
{
private:
	HTHEME m_hTheme;

	static HMODULE m_hThemeDll;
	static BOOL m_bLoaded;

	static void* GetProc(LPCSTR szProc, void* pfnFail);

	typedef HTHEME(__stdcall *PFNOPENTHEMEDATA)(HWND hwnd, LPCWSTR pszClassList);
	static HTHEME OpenThemeDataFail(HWND , LPCWSTR )
	{return NULL;}
	static PFNOPENTHEMEDATA m_pOpenThemeData;

	typedef HRESULT(__stdcall *PFNCLOSETHEMEDATA)(HTHEME hTheme);
	static HRESULT CloseThemeDataFail(HTHEME)
	{return E_FAIL;}
	static PFNCLOSETHEMEDATA m_pCloseThemeData;

	typedef HRESULT(__stdcall *PFNDRAWTHEMEBACKGROUND)(HTHEME hTheme, HDC hdc, 
		int iPartId, int iStateId, const RECT *pRect,  const RECT *pClipRect);
	static HRESULT DrawThemeBackgroundFail(HTHEME, HDC, int, int, const RECT *, const RECT *)
	{return E_FAIL;}
	static PFNDRAWTHEMEBACKGROUND m_pDrawThemeBackground;

	typedef HRESULT (__stdcall *PFNDRAWTHEMETEXT)(HTHEME hTheme, HDC hdc, int iPartId, 
		int iStateId, LPCWSTR pszText, int iCharCount, DWORD dwTextFlags, 
		DWORD dwTextFlags2, const RECT *pRect);
	static HRESULT DrawThemeTextFail(HTHEME, HDC, int, int, LPCWSTR, int, DWORD, DWORD, const RECT*)
	{return E_FAIL;}
	static PFNDRAWTHEMETEXT m_pDrawThemeText;

	typedef HRESULT (__stdcall *PFNGETTHEMEBACKGROUNDCONTENTRECT)(HTHEME hTheme,  HDC hdc, 
		int iPartId, int iStateId,  const RECT *pBoundingRect, 
		RECT *pContentRect);
	static HRESULT GetThemeBackgroundContentRectFail(HTHEME hTheme,  HDC hdc, 
		int iPartId, int iStateId,  const RECT *pBoundingRect, 
		RECT *pContentRect)
	{return E_FAIL;}
	static PFNGETTHEMEBACKGROUNDCONTENTRECT m_pGetThemeBackgroundContentRect;

	typedef HRESULT (__stdcall *PFNGETTHEMEBACKGROUNDEXTENT)(HTHEME hTheme,  HDC hdc,
		int iPartId, int iStateId, const RECT *pContentRect, 
		RECT *pExtentRect);
	static HRESULT GetThemeBackgroundExtentFail(HTHEME hTheme,  HDC hdc,
		int iPartId, int iStateId, const RECT *pContentRect, 
		RECT *pExtentRect)
	{return E_FAIL;}
	static PFNGETTHEMEBACKGROUNDEXTENT m_pGetThemeBackgroundExtent;

	typedef HRESULT(__stdcall *PFNGETTHEMEPARTSIZE)(HTHEME hTheme, HDC hdc, 
		int iPartId, int iStateId, RECT * pRect, enum THEMESIZE eSize,  SIZE *psz);
	static HRESULT GetThemePartSizeFail(HTHEME, HDC, int, int, RECT *, enum THEMESIZE, SIZE *)
	{return E_FAIL;}
	static PFNGETTHEMEPARTSIZE m_pGetThemePartSize;

	typedef HRESULT (__stdcall *PFNGETTHEMETEXTEXTENT)(HTHEME hTheme, HDC hdc, 
		int iPartId, int iStateId, LPCWSTR pszText, int iCharCount, 
		DWORD dwTextFlags,  const RECT *pBoundingRect, 
		RECT *pExtentRect);
	static HRESULT GetThemeTextExtentFail(HTHEME hTheme, HDC hdc, 
		int iPartId, int iStateId, LPCWSTR pszText, int iCharCount, 
		DWORD dwTextFlags,  const RECT *pBoundingRect, 
		RECT *pExtentRect)
	{return E_FAIL;}
	static PFNGETTHEMETEXTEXTENT m_pGetThemeTextExtent;

	typedef HRESULT (__stdcall *PFNGETTHEMETEXTMETRICS)(HTHEME hTheme,  HDC hdc, 
		int iPartId, int iStateId,  TEXTMETRIC* ptm);
	static HRESULT GetThemeTextMetricsFail(HTHEME hTheme,  HDC hdc, 
		int iPartId, int iStateId,  TEXTMETRIC* ptm)
	{return E_FAIL;}
	static PFNGETTHEMETEXTMETRICS m_pGetThemeTextMetrics;

	typedef HRESULT (__stdcall *PFNGETTHEMEBACKGROUNDREGION)(HTHEME hTheme,  HDC hdc,  
		int iPartId, int iStateId, const RECT *pRect,  HRGN *pRegion);
	static HRESULT GetThemeBackgroundRegionFail(HTHEME hTheme,  HDC hdc,  
		int iPartId, int iStateId, const RECT *pRect,  HRGN *pRegion)
	{return E_FAIL;}
	static PFNGETTHEMEBACKGROUNDREGION m_pGetThemeBackgroundRegion;

	typedef HRESULT (__stdcall *PFNHITTESTTHEMEBACKGROUND)(HTHEME hTheme,  HDC hdc, int iPartId, 
		int iStateId, DWORD dwOptions, const RECT *pRect,  HRGN hrgn, 
		POINT ptTest,  WORD *pwHitTestCode);
	static HRESULT HitTestThemeBackgroundFail(HTHEME hTheme,  HDC hdc, int iPartId, 
		int iStateId, DWORD dwOptions, const RECT *pRect,  HRGN hrgn, 
		POINT ptTest,  WORD *pwHitTestCode)
	{return E_FAIL;}
	static PFNHITTESTTHEMEBACKGROUND m_pHitTestThemeBackground;

	typedef HRESULT (__stdcall *PFNDRAWTHEMEEDGE)(HTHEME hTheme, HDC hdc, int iPartId, int iStateId, 
		const RECT *pDestRect, UINT uEdge, UINT uFlags,   RECT *pContentRect);
	static HRESULT DrawThemeEdgeFail(HTHEME hTheme, HDC hdc, int iPartId, int iStateId, 
		const RECT *pDestRect, UINT uEdge, UINT uFlags,   RECT *pContentRect)
	{return E_FAIL;}
	static PFNDRAWTHEMEEDGE m_pDrawThemeEdge;

	typedef HRESULT (__stdcall *PFNDRAWTHEMEICON)(HTHEME hTheme, HDC hdc, int iPartId, 
		int iStateId, const RECT *pRect, HIMAGELIST himl, int iImageIndex);
	static HRESULT DrawThemeIconFail(HTHEME hTheme, HDC hdc, int iPartId, 
		int iStateId, const RECT *pRect, HIMAGELIST himl, int iImageIndex)
	{return E_FAIL;}
	static PFNDRAWTHEMEICON m_pDrawThemeIcon;

	typedef BOOL (__stdcall *PFNISTHEMEPARTDEFINED)(HTHEME hTheme, int iPartId, 
		int iStateId);
	static BOOL IsThemePartDefinedFail(HTHEME hTheme, int iPartId, 
		int iStateId)
	{return FALSE;}
	static PFNISTHEMEPARTDEFINED m_pIsThemePartDefined;

	typedef BOOL (__stdcall *PFNISTHEMEBACKGROUNDPARTIALLYTRANSPARENT)(HTHEME hTheme, 
		int iPartId, int iStateId);
	static BOOL IsThemeBackgroundPartiallyTransparentFail(HTHEME hTheme, 
		int iPartId, int iStateId)
	{return FALSE;}
	static PFNISTHEMEBACKGROUNDPARTIALLYTRANSPARENT m_pIsThemeBackgroundPartiallyTransparent;

	typedef HRESULT (__stdcall *PFNGETTHEMECOLOR)(HTHEME hTheme, int iPartId, 
		int iStateId, int iPropId,  COLORREF *pColor);
	static HRESULT GetThemeColorFail(HTHEME hTheme, int iPartId, 
		int iStateId, int iPropId,  COLORREF *pColor)
	{return E_FAIL;}
	static PFNGETTHEMECOLOR m_pGetThemeColor;

	typedef HRESULT (__stdcall *PFNGETTHEMEMETRIC)(HTHEME hTheme,  HDC hdc, int iPartId, 
		int iStateId, int iPropId,  int *piVal);
	static HRESULT GetThemeMetricFail(HTHEME hTheme,  HDC hdc, int iPartId, 
		int iStateId, int iPropId,  int *piVal)
	{return E_FAIL;}
	static PFNGETTHEMEMETRIC m_pGetThemeMetric;

	typedef HRESULT (__stdcall *PFNGETTHEMESTRING)(HTHEME hTheme, int iPartId, 
		int iStateId, int iPropId,  LPWSTR pszBuff, int cchMaxBuffChars);
	static HRESULT GetThemeStringFail(HTHEME hTheme, int iPartId, 
		int iStateId, int iPropId,  LPWSTR pszBuff, int cchMaxBuffChars)
	{return E_FAIL;}
	static PFNGETTHEMESTRING m_pGetThemeString;

	typedef HRESULT (__stdcall *PFNGETTHEMEBOOL)(HTHEME hTheme, int iPartId, 
		int iStateId, int iPropId,  BOOL *pfVal);
	static HRESULT GetThemeBoolFail(HTHEME hTheme, int iPartId, 
		int iStateId, int iPropId,  BOOL *pfVal)
	{return E_FAIL;}
	static PFNGETTHEMEBOOL m_pGetThemeBool;

	typedef HRESULT (__stdcall *PFNGETTHEMEINT)(HTHEME hTheme, int iPartId, 
		int iStateId, int iPropId,  int *piVal);
	static HRESULT GetThemeIntFail(HTHEME hTheme, int iPartId, 
		int iStateId, int iPropId,  int *piVal)
	{return E_FAIL;}
	static PFNGETTHEMEINT m_pGetThemeInt;

	typedef HRESULT (__stdcall *PFNGETTHEMEENUMVALUE)(HTHEME hTheme, int iPartId, 
		int iStateId, int iPropId,  int *piVal);
	static HRESULT GetThemeEnumValueFail(HTHEME hTheme, int iPartId, 
		int iStateId, int iPropId,  int *piVal)
	{return E_FAIL;}
	static PFNGETTHEMEENUMVALUE m_pGetThemeEnumValue;

	typedef HRESULT (__stdcall *PFNGETTHEMEPOSITION)(HTHEME hTheme, int iPartId, 
		int iStateId, int iPropId,  POINT *pPoint);
	static HRESULT GetThemePositionFail(HTHEME hTheme, int iPartId, 
		int iStateId, int iPropId,  POINT *pPoint)
	{return E_FAIL;}
	static PFNGETTHEMEPOSITION m_pGetThemePosition;

	typedef HRESULT (__stdcall *PFNGETTHEMEFONT)(HTHEME hTheme,  HDC hdc, int iPartId, 
		int iStateId, int iPropId,  LOGFONT *pFont);
	static HRESULT GetThemeFontFail(HTHEME hTheme,  HDC hdc, int iPartId, 
		int iStateId, int iPropId,  LOGFONT *pFont)
	{return E_FAIL;}
	static PFNGETTHEMEFONT m_pGetThemeFont;

	typedef HRESULT (__stdcall *PFNGETTHEMERECT)(HTHEME hTheme, int iPartId, 
		int iStateId, int iPropId,  RECT *pRect);
	static HRESULT GetThemeRectFail(HTHEME hTheme, int iPartId, 
		int iStateId, int iPropId,  RECT *pRect)
	{return E_FAIL;}
	static PFNGETTHEMERECT m_pGetThemeRect;

	typedef HRESULT (__stdcall *PFNGETTHEMEMARGINS)(HTHEME hTheme,  HDC hdc, int iPartId, 
		int iStateId, int iPropId,  RECT *prc,  MARGINS *pMargins);
	static HRESULT GetThemeMarginsFail(HTHEME hTheme,  HDC hdc, int iPartId, 
		int iStateId, int iPropId,  RECT *prc,  MARGINS *pMargins)
	{return E_FAIL;}
	static PFNGETTHEMEMARGINS m_pGetThemeMargins;

	typedef HRESULT (__stdcall *PFNGETTHEMEINTLIST)(HTHEME hTheme, int iPartId, 
		int iStateId, int iPropId,  INTLIST *pIntList);
	static HRESULT GetThemeIntListFail(HTHEME hTheme, int iPartId, 
		int iStateId, int iPropId,  INTLIST *pIntList)
	{return E_FAIL;}
	static PFNGETTHEMEINTLIST m_pGetThemeIntList;

	typedef HRESULT (__stdcall *PFNGETTHEMEPROPERTYORIGIN)(HTHEME hTheme, int iPartId, 
		int iStateId, int iPropId,  enum PROPERTYORIGIN *pOrigin);
	static HRESULT GetThemePropertyOriginFail(HTHEME hTheme, int iPartId, 
		int iStateId, int iPropId,  enum PROPERTYORIGIN *pOrigin)
	{return E_FAIL;}
	static PFNGETTHEMEPROPERTYORIGIN m_pGetThemePropertyOrigin;

	typedef HRESULT (__stdcall *PFNSETWINDOWTHEME)(HWND hwnd, LPCWSTR pszSubAppName, 
		LPCWSTR pszSubIdList);
	static HRESULT SetWindowThemeFail(HWND hwnd, LPCWSTR pszSubAppName, 
		LPCWSTR pszSubIdList)
	{return E_FAIL;}
	static PFNSETWINDOWTHEME m_pSetWindowTheme;

	typedef HRESULT (__stdcall *PFNGETTHEMEFILENAME)(HTHEME hTheme, int iPartId, 
		int iStateId, int iPropId,  LPWSTR pszThemeFileName, int cchMaxBuffChars);
	static HRESULT GetThemeFilenameFail(HTHEME hTheme, int iPartId, 
		int iStateId, int iPropId,  LPWSTR pszThemeFileName, int cchMaxBuffChars)
	{return E_FAIL;}
	static PFNGETTHEMEFILENAME m_pGetThemeFilename;

	typedef COLORREF (__stdcall *PFNGETTHEMESYSCOLOR)(HTHEME hTheme, int iColorId);
	static COLORREF GetThemeSysColorFail(HTHEME hTheme, int iColorId)
	{return RGB(255,255,255);}
	static PFNGETTHEMESYSCOLOR m_pGetThemeSysColor;

	typedef HBRUSH (__stdcall *PFNGETTHEMESYSCOLORBRUSH)(HTHEME hTheme, int iColorId);
	static HBRUSH GetThemeSysColorBrushFail(HTHEME hTheme, int iColorId)
	{return NULL;}
	static PFNGETTHEMESYSCOLORBRUSH m_pGetThemeSysColorBrush;

	typedef BOOL (__stdcall *PFNGETTHEMESYSBOOL)(HTHEME hTheme, int iBoolId);
	static BOOL GetThemeSysBoolFail(HTHEME hTheme, int iBoolId)
	{return FALSE;}
	static PFNGETTHEMESYSBOOL m_pGetThemeSysBool;

	typedef int (__stdcall *PFNGETTHEMESYSSIZE)(HTHEME hTheme, int iSizeId);
	static int GetThemeSysSizeFail(HTHEME hTheme, int iSizeId)
	{return 0;}
	static PFNGETTHEMESYSSIZE m_pGetThemeSysSize;

	typedef HRESULT (__stdcall *PFNGETTHEMESYSFONT)(HTHEME hTheme, int iFontId,  LOGFONT *plf);
	static HRESULT GetThemeSysFontFail(HTHEME hTheme, int iFontId,  LOGFONT *plf)
	{return E_FAIL;}
	static PFNGETTHEMESYSFONT m_pGetThemeSysFont;

	typedef HRESULT (__stdcall *PFNGETTHEMESYSSTRING)(HTHEME hTheme, int iStringId, 
		LPWSTR pszStringBuff, int cchMaxStringChars);
	static HRESULT GetThemeSysStringFail(HTHEME hTheme, int iStringId, 
		LPWSTR pszStringBuff, int cchMaxStringChars)
	{return E_FAIL;}
	static PFNGETTHEMESYSSTRING m_pGetThemeSysString;

	typedef HRESULT (__stdcall *PFNGETTHEMESYSINT)(HTHEME hTheme, int iIntId, int *piValue);
	static HRESULT GetThemeSysIntFail(HTHEME hTheme, int iIntId, int *piValue)
	{return E_FAIL;}
	static PFNGETTHEMESYSINT m_pGetThemeSysInt;

	typedef BOOL (__stdcall *PFNISTHEMEACTIVE)();
	static BOOL IsThemeActiveFail()
	{return FALSE;}
	static PFNISTHEMEACTIVE m_pIsThemeActive;

	typedef BOOL(__stdcall *PFNISAPPTHEMED)();
	static BOOL IsAppThemedFail()
	{return FALSE;}
	static PFNISAPPTHEMED m_pIsAppThemed;

	typedef HTHEME (__stdcall *PFNGETWINDOWTHEME)(HWND hwnd);
	static HTHEME GetWindowThemeFail(HWND hwnd)
	{return NULL;}
	static PFNGETWINDOWTHEME m_pGetWindowTheme;

	typedef HRESULT (__stdcall *PFNENABLETHEMEDIALOGTEXTURE)(HWND hwnd, DWORD dwFlags);
	static HRESULT EnableThemeDialogTextureFail(HWND hwnd, DWORD dwFlags)
	{return E_FAIL;}
	static PFNENABLETHEMEDIALOGTEXTURE m_pEnableThemeDialogTexture;

	typedef BOOL (__stdcall *PFNISTHEMEDIALOGTEXTUREENABLED)(HWND hwnd);
	static BOOL IsThemeDialogTextureEnabledFail(HWND hwnd)
	{return FALSE;}
	static PFNISTHEMEDIALOGTEXTUREENABLED m_pIsThemeDialogTextureEnabled;

	typedef DWORD (__stdcall *PFNGETTHEMEAPPPROPERTIES)();
	static DWORD GetThemeAppPropertiesFail()
	{return 0;}
	static PFNGETTHEMEAPPPROPERTIES m_pGetThemeAppProperties;

	typedef void (__stdcall *PFNSETTHEMEAPPPROPERTIES)(DWORD dwFlags);
	static void SetThemeAppPropertiesFail(DWORD dwFlags)
	{return;}
	static PFNSETTHEMEAPPPROPERTIES m_pSetThemeAppProperties;

	typedef HRESULT (__stdcall *PFNGETCURRENTTHEMENAME)(
		LPWSTR pszThemeFileName, int cchMaxNameChars, 
		LPWSTR pszColorBuff, int cchMaxColorChars,
		LPWSTR pszSizeBuff, int cchMaxSizeChars);
	static HRESULT GetCurrentThemeNameFail(
		LPWSTR pszThemeFileName, int cchMaxNameChars, 
		LPWSTR pszColorBuff, int cchMaxColorChars,
		LPWSTR pszSizeBuff, int cchMaxSizeChars)
	{return E_FAIL;}
	static PFNGETCURRENTTHEMENAME m_pGetCurrentThemeName;

	typedef HRESULT (__stdcall *PFNGETTHEMEDOCUMENTATIONPROPERTY)(LPCWSTR pszThemeName,
		LPCWSTR pszPropertyName,  LPWSTR pszValueBuff, int cchMaxValChars);
	static HRESULT GetThemeDocumentationPropertyFail(LPCWSTR pszThemeName,
		LPCWSTR pszPropertyName,  LPWSTR pszValueBuff, int cchMaxValChars)
	{return E_FAIL;}
	static PFNGETTHEMEDOCUMENTATIONPROPERTY m_pGetThemeDocumentationProperty;

	typedef HRESULT (__stdcall *PFNDRAWTHEMEPARENTBACKGROUND)(HWND hwnd, HDC hdc,  RECT* prc);
	static HRESULT DrawThemeParentBackgroundFail(HWND hwnd, HDC hdc,  RECT* prc)
	{return E_FAIL;}
	static PFNDRAWTHEMEPARENTBACKGROUND m_pDrawThemeParentBackground;

	typedef HRESULT (__stdcall *PFNENABLETHEMING)(BOOL fEnable);
	static HRESULT EnableThemingFail(BOOL fEnable)
	{return E_FAIL;}
	static PFNENABLETHEMING m_pEnableTheming;
public:
	BOOL Open(HWND hwnd, LPCWSTR pszClassList);
	void Close();
	HRESULT DrawBackground(HDC hdc, 
		int iPartId, int iStateId, const RECT *pRect, const RECT *pClipRect);
	HRESULT DrawText(HDC hdc, int iPartId, 
		int iStateId, LPCWSTR pszText, int iCharCount, DWORD dwTextFlags, 
		DWORD dwTextFlags2, const RECT *pRect);
	HRESULT GetBackgroundContentRect(HDC hdc, 
		int iPartId, int iStateId,  const RECT *pBoundingRect, 
		RECT *pContentRect);
	HRESULT GetBackgroundExtent(HDC hdc,
		int iPartId, int iStateId, const RECT *pContentRect, 
		RECT *pExtentRect);
	HRESULT GetPartSize(HDC hdc, 
		int iPartId, int iStateId, RECT * pRect, enum THEMESIZE eSize, SIZE *psz);
	HRESULT GetTextExtent(HDC hdc, 
		int iPartId, int iStateId, LPCWSTR pszText, int iCharCount, 
		DWORD dwTextFlags,  const RECT *pBoundingRect, 
		RECT *pExtentRect);
	HRESULT GetTextMetrics(HDC hdc, 
		int iPartId, int iStateId,  TEXTMETRIC* ptm);
	HRESULT GetBackgroundRegion(HDC hdc,  
		int iPartId, int iStateId, const RECT *pRect,  HRGN *pRegion);
	HRESULT HitTestBackground(HDC hdc, int iPartId, 
		int iStateId, DWORD dwOptions, const RECT *pRect,  HRGN hrgn, 
		POINT ptTest,  WORD *pwHitTestCode);
	HRESULT DrawEdge(HDC hdc, int iPartId, int iStateId, 
		const RECT *pDestRect, UINT uEdge, UINT uFlags,   RECT *pContentRect);
	HRESULT DrawIcon(HDC hdc, int iPartId, 
		int iStateId, const RECT *pRect, HIMAGELIST himl, int iImageIndex);
	BOOL IsPartDefined(int iPartId, 
		int iStateId);
	BOOL IsBackgroundPartiallyTransparent( 
		int iPartId, int iStateId);
	HRESULT GetColor(int iPartId, 
		int iStateId, int iPropId,  COLORREF *pColor);
	HRESULT GetMetric(HDC hdc, int iPartId, 
		int iStateId, int iPropId,  int *piVal);
	HRESULT GetString(int iPartId, 
		int iStateId, int iPropId,  LPWSTR pszBuff, int cchMaxBuffChars);
	HRESULT GetBool(int iPartId, 
		int iStateId, int iPropId,  BOOL *pfVal);
	HRESULT GetInt(int iPartId, 
		int iStateId, int iPropId,  int *piVal);
	HRESULT GetEnumValue(int iPartId, 
		int iStateId, int iPropId,  int *piVal);
	HRESULT GetPosition(int iPartId, 
		int iStateId, int iPropId,  POINT *pPoint);
	HRESULT GetFont(HDC hdc, int iPartId, 
		int iStateId, int iPropId,  LOGFONT *pFont);
	HRESULT GetRect(int iPartId, 
		int iStateId, int iPropId,  RECT *pRect);
	HRESULT GetMargins(HDC hdc, int iPartId, 
		int iStateId, int iPropId,  RECT *prc,  MARGINS *pMargins);
	HRESULT GetIntList(int iPartId, 
		int iStateId, int iPropId,  INTLIST *pIntList);
	HRESULT GetPropertyOrigin(int iPartId, 
		int iStateId, int iPropId,  enum PROPERTYORIGIN *pOrigin);
	static HRESULT SetWindowTheme(HWND hwnd, LPCWSTR pszSubAppName, 
		LPCWSTR pszSubIdList);
	HRESULT GetFilename(int iPartId, 
		int iStateId, int iPropId,  LPWSTR pszThemeFileName, int cchMaxBuffChars);
	COLORREF GetSysColor(int iColorId);
	HBRUSH GetSysColorBrush(int iColorId);
	BOOL GetSysBool(int iBoolId);
	int GetSysSize(int iSizeId);
	HRESULT GetSysFont(int iFontId,  LOGFONT *plf);
	HRESULT GetSysString(int iStringId, 
		LPWSTR pszStringBuff, int cchMaxStringChars);
	HRESULT GetSysInt(int iIntId, int *piValue);
	static BOOL IsActive();
	static BOOL IsAppThemed();	
	static HTHEME GetWindowTheme(HWND hwnd);
	static HRESULT EnableDialogTexture(HWND hwnd, DWORD dwFlags);
	static BOOL IsDialogTextureEnabled(HWND hwnd);
	static DWORD GetAppProperties();
	static void SetAppProperties(DWORD dwFlags);
	static HRESULT GetCurrentName(
		LPWSTR pszThemeFileName, int cchMaxNameChars, 
		LPWSTR pszColorBuff, int cchMaxColorChars,
		LPWSTR pszSizeBuff, int cchMaxSizeChars);
	static HRESULT GetDocumentationProperty(LPCWSTR pszThemeName,
		LPCWSTR pszPropertyName,  LPWSTR pszValueBuff, int cchMaxValChars);
	static HRESULT DrawParentBackground(HWND hwnd, HDC hdc,  RECT* prc);
	static HRESULT EnableTheming(BOOL fEnable);
public:
	CXPTheme(void);
	CXPTheme(HTHEME hTheme);
	CXPTheme(HWND hwnd, LPCWSTR pszClassList);
	~CXPTheme(void);
	void Attach(HTHEME hTheme);
	HTHEME Detach();
	operator HTHEME() const;
	bool operator!() const;

	static void Release(void);
	static BOOL IsAvailable();
};

#endif
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Written By
Pål K Tønder
Web Developer
Norway
This member has not yet provided a Biography. Assume it's interesting and varied, and probably something to do with programming.
Adding XP Visual Style Support to OWNERDRAW Controls using HTHEME Wrapper

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