HRESULT DrawThemesPart(HDC hDC, int iPartId, int iStateId, LPCSTR uiPartNameID, LPRECT prcBox)
{
if(!IsWinXP()) return E_FAIL;
HINSTANCE hDll=LoadLibrary(CString((LPCTSTR)IDS_UTIL_UXTHEME)); // 'UxTheme.dll'
if(!hDll) return E_FAIL;
BOOL (PASCAL* pfnIsThemeActive)(); UINT hTheme=0;
(FARPROC&)pfnIsThemeActive=GetProcAddress(hDll,IDS_UTIL_THEMEACT); // 'IsThemeActive'
HRESULT hResult=E_FAIL;
if(pfnIsThemeActive && pfnIsThemeActive())
{
CString sPartName((LPCTSTR)uiPartNameID);
if(sPartName.GetLength()>0)
{
WCHAR swPartName[WPART_NAME_SZ];
#if !defined(UNICODE) && !defined(_UNICODE)
MultiByteToWideChar(CP_ACP,0,(LPCSTR)sPartName,-1,swPartName,sizeof(swPartName)/sizeof(WCHAR));
#else
_tcscpy(swPartName, sPartName.GetBuffer());
#endif
UINT (PASCAL* pfnOpenThemeData)(HWND hwnd, LPCWSTR pszClassList);
(FARPROC&)pfnOpenThemeData=GetProcAddress(hDll,IDS_UTIL_THEMEOPN);// 'OpenThemeData'
if(pfnOpenThemeData && (hTheme=pfnOpenThemeData(NULL, swPartName))!=0)
{
UINT (PASCAL* pfnDrawThemeBackground)(UINT htheme,HDC hdc,int iPartID,int iStateID,const RECT* prcBx,const RECT* prcClip);
(FARPROC&)pfnDrawThemeBackground=GetProcAddress(hDll,IDS_UTIL_THEMEBCKG); // 'DrawThemeBackground'
if(pfnDrawThemeBackground)
hResult=pfnDrawThemeBackground(hTheme, hDC, iPartId, iStateId, prcBox, NULL);
}
}
}
FreeLibrary(hDll);
return hResult;
}
HRESULT CThemeHelperST::DrawThemeBackground(HTHEME hTheme, HWND hWnd, HDC hdc, int iPartId, int iStateId, const RECT* pRect, const RECT* pClipRect)
{
if((pfnDrawThemeParentBackground != NULL) && (hWnd != NULL))
pfnDrawThemeParentBackground(hWnd, hdc, (PRECT)pRect);
if(pfnDrawThemeBackground != NULL) return pfnDrawThemeBackground(hTheme, hdc, iPartId, iStateId, pRect, pClipRect);
return E_FAIL;
}