// This is a modified version of Davide Calabro's CThemeHelperST class,
// Dominik Reichl, dominik.reichl@t-online.de, https://www.dominik-reichl.de/
// See the header file for his original header and disclaimer.
#include "StdAfx.h"
#include "ThemeHelperST.h"
#ifdef _DEBUG
#undef THIS_FILE
static char THIS_FILE[] = __FILE__;
#define new DEBUG_NEW
#endif
CThemeHelperST::CThemeHelperST()
{
m_hDLL = LoadLibrary(_T("UxTheme.dll"));
if(m_hDLL != NULL)
{
pfnOpenThemeData = (PFNOPENTHEMEDATA)GetProcAddress(m_hDLL, "OpenThemeData");
pfnCloseThemeData = (PFNCLOSETHEMEDATA)GetProcAddress(m_hDLL, "CloseThemeData");
pfnDrawThemeParentBackground = (PFNDRAWTHEMEPARENTBACKGROUND)GetProcAddress(m_hDLL, "DrawThemeParentBackground");
pfnDrawThemeBackground = (PFNDRAWTHEMEBACKGROUND)GetProcAddress(m_hDLL, "DrawThemeBackground");
pfnDrawThemeText = (PFNDRAWTHEMETEXT)GetProcAddress(m_hDLL, "DrawThemeText");
pfnGetThemeBackgroundContentRect = (PFNGETTHEMEBACKGROUNDCONTENTRECT)
GetProcAddress(m_hDLL, "GetThemeBackgroundContentRect");
pfnIsThemePartDefined = (PFNISTHEMEPARTDEFINED)GetProcAddress(m_hDLL, "IsThemePartDefined");
pfnIsThemeBackgroundPartiallyTransparent = (PFNISTHEMEBACKGROUNDPARTIALLYTRANSPARENT)
GetProcAddress(m_hDLL, "IsThemeBackgroundPartiallyTransparent");
pfnIsAppThemed = (PFNISAPPTHEMED)GetProcAddress(m_hDLL, "IsAppThemed");
pfnIsThemeActive = (PFNISTHEMEACTIVE)GetProcAddress(m_hDLL, "IsThemeActive");
}
else
{
pfnOpenThemeData = NULL;
pfnCloseThemeData = NULL;
pfnDrawThemeParentBackground = NULL;
pfnDrawThemeBackground = NULL;
pfnDrawThemeText = NULL;
pfnGetThemeBackgroundContentRect = NULL;
pfnIsThemePartDefined = NULL;
pfnIsThemeBackgroundPartiallyTransparent = NULL;
pfnIsAppThemed = NULL;
pfnIsThemeActive = NULL;
}
}
CThemeHelperST::~CThemeHelperST()
{
pfnOpenThemeData = NULL;
pfnCloseThemeData = NULL;
pfnDrawThemeParentBackground = NULL;
pfnDrawThemeBackground = NULL;
pfnDrawThemeText = NULL;
pfnGetThemeBackgroundContentRect = NULL;
pfnIsThemePartDefined = NULL;
pfnIsThemeBackgroundPartiallyTransparent = NULL;
pfnIsAppThemed = NULL;
pfnIsThemeActive = NULL;
if(m_hDLL != NULL) FreeLibrary(m_hDLL);
m_hDLL = NULL;
}
HTHEME CThemeHelperST::OpenThemeData(HWND hwnd, LPCWSTR pszClassList)
{
if(pfnOpenThemeData != NULL) return pfnOpenThemeData(hwnd, pszClassList);
return NULL;
}
HRESULT CThemeHelperST::CloseThemeData(HTHEME hTheme)
{
if(pfnCloseThemeData != NULL) return pfnCloseThemeData(hTheme);
return E_FAIL;
}
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;
}
HRESULT CThemeHelperST::DrawThemeText(HTHEME hTheme, HDC hdc, int iPartId, int iStateId, LPCWSTR pszText, int iCharCount, DWORD dwTextFlags, DWORD dwTextFlags2, const RECT *pRect)
{
if(pfnDrawThemeText != NULL) return pfnDrawThemeText(hTheme, hdc, iPartId, iStateId, pszText, iCharCount, dwTextFlags, dwTextFlags2, pRect);
return E_FAIL;
}
HRESULT CThemeHelperST::GetThemeBackgroundContentRect(HTHEME hTheme, HDC hdc, int iPartId, int iStateId, LPCRECT pBoundingRect, LPRECT pContentRect)
{
if(pfnGetThemeBackgroundContentRect != NULL)
return pfnGetThemeBackgroundContentRect(hTheme, hdc, iPartId, iStateId, pBoundingRect, pContentRect);
return E_FAIL;
}
BOOL CThemeHelperST::IsThemePartDefined(HTHEME hTheme, int iPartId, int iStateId)
{
if(pfnIsThemePartDefined != NULL) return pfnIsThemePartDefined(hTheme, iPartId, iStateId);
return FALSE;
}
BOOL CThemeHelperST::IsThemeBackgroundPartiallyTransparent(HTHEME hTheme, int iPartId, int iStateId)
{
if(pfnIsThemeBackgroundPartiallyTransparent != NULL)
return pfnIsThemeBackgroundPartiallyTransparent(hTheme, iPartId, iStateId);
return FALSE;
}
BOOL CThemeHelperST::IsAppThemed()
{
if(pfnIsAppThemed != NULL) return pfnIsAppThemed();
return FALSE;
}
BOOL CThemeHelperST::IsThemeActive()
{
if(pfnIsThemeActive != NULL) return pfnIsThemeActive();
return FALSE;
}