Source code of Windows XP (NT5)
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/*****************************************************************************\
FILE: appScheme.cpp
DESCRIPTION:
This is the Autmation Object to theme scheme object.
BryanSt 4/3/2000 (Bryan Starbuck)
Copyright (C) Microsoft Corp 2000-2000. All rights reserved.
\*****************************************************************************/
#include "priv.h"
#include <cowsite.h>
#include <atlbase.h>
#include "util.h"
#include "theme.h"
#include "appstyle.h"
#include "appscheme.h"
//===========================
// *** Class Internals & Helpers ***
//===========================
APPEARANCESCHEME_UPGRADE_MAPPINGS g_UpgradeMapping[MAX_LEGACY_UPGRADE_SCENARIOS] = {0};
HRESULT LoadConversionMappings(void)
{
if (0 == g_UpgradeMapping[0].szLegacyName[0]) // Only set the settings if it's the first time.
{
// This is custom user created scheme.
TCHAR szTempState[10];
for (int nIndex = 0; nIndex < ARRAYSIZE(g_UpgradeMapping); nIndex++)
{
LoadString(HINST_THISDLL, IDS_LEGACYSCHEME_NAME + nIndex, g_UpgradeMapping[nIndex].szLegacyName, ARRAYSIZE(g_UpgradeMapping[nIndex].szLegacyName));
LoadString(HINST_THISDLL, IDS_LOCALIZATIONPOINTER + nIndex, g_UpgradeMapping[nIndex].szNewColorSchemeName, ARRAYSIZE(g_UpgradeMapping[nIndex].szNewColorSchemeName));
LoadString(HINST_THISDLL, IDS_NEWSIZE_NAME + nIndex, g_UpgradeMapping[nIndex].szNewSizeName, ARRAYSIZE(g_UpgradeMapping[nIndex].szNewSizeName));
LoadString(HINST_THISDLL, IDS_NEWCONTRASTFLAGS + nIndex, szTempState, ARRAYSIZE(szTempState));
g_UpgradeMapping[nIndex].ContrastLevel = (enumThemeContrastLevels) StrToInt(szTempState);
}
}
return S_OK;
}
HRESULT MapLegacyAppearanceSchemeToIndex(LPCTSTR pszOldSchemeName, int * pnIndex)
{
HRESULT hr = E_FAIL; // Failure means, FALSE, we didn't convert.
*pnIndex = 0;
for (int nIndex = 0; nIndex < ARRAYSIZE(g_UpgradeMapping); nIndex++)
{
// Did we find that pszSchemeName is one of the legacy settings?
if (!StrCmpI(pszOldSchemeName, g_UpgradeMapping[nIndex].szLegacyName))
{
hr = S_OK;
*pnIndex = nIndex;
break;
}
}
return hr;
}
HRESULT CAppearanceScheme::_IsLegacyUpgradeConvert(LPCTSTR pszSchemeName, SYSTEMMETRICSALL * pState, IN BOOL fSetAsDefault)
{
int nIndex = 0;
HRESULT hr = MapLegacyAppearanceSchemeToIndex(pszSchemeName, &nIndex);
if (SUCCEEDED(hr))
{
hr = _ConvertScheme(pszSchemeName, g_UpgradeMapping[nIndex].szNewColorSchemeName, g_UpgradeMapping[nIndex].szNewSizeName, pState, g_UpgradeMapping[nIndex].ContrastLevel, fSetAsDefault, FALSE);
}
return hr;
}
HRESULT CAppearanceScheme::_CustomConvert(LPCTSTR pszSchemeName, SYSTEMMETRICSALL * pState, IN BOOL fSetAsDefault, IN BOOL fSetRegKeyTitle)
{
// This is custom user created scheme.
TCHAR szSizeName[MAX_PATH];
LoadString(HINST_THISDLL, IDS_SIZE_NORMAL, szSizeName, ARRAYSIZE(szSizeName));
return _ConvertScheme(pszSchemeName, pszSchemeName, szSizeName, pState, CONTRAST_NORMAL, fSetAsDefault, fSetRegKeyTitle);
}
HRESULT CAppearanceScheme::_getSizeIndex(IN IThemeStyle * pThemeStyle, IN IThemeSize * pThemeSize, IN BSTR bstrSizeDisplayName, IN long * pnSizeIndex)
{
// This is horrible from a perf perspective, but we only do it once on upgrade.
long nCount;
HRESULT hr = E_FAIL;
*pnSizeIndex = 0;
if (SUCCEEDED(pThemeStyle->get_length(&nCount)))
{
IThemeSize * pThemeSize2;
for (long nIndex = 0; nIndex < nCount; nIndex++)
{
VARIANT var;
var.vt = VT_I4;
var.lVal = nIndex;
if (SUCCEEDED(pThemeStyle->get_item(var, &pThemeSize2)))
{
CComBSTR bstrSize2;
if (SUCCEEDED(pThemeSize2->get_DisplayName(&bstrSize2)))
{
CComBSTR bstrName;
if (!StrCmpIW(bstrSizeDisplayName, bstrSize2) ||
(SUCCEEDED(pThemeSize2->get_Name(&bstrName)) &&
!StrCmpIW(bstrSizeDisplayName, bstrName)))
{
hr = S_OK;
*pnSizeIndex = nIndex;
nIndex = nCount; // End looping now.
}
}
pThemeSize2->Release();
}
}
}
return hr;
}
HRESULT CAppearanceScheme::_getIndex(IN IThemeStyle * pThemeStyle, IN BSTR bstrStyleDisplayName, IN long * pnStyleIndex, IN IThemeSize * pThemeSize, IN BSTR bstrSizeDisplayName, IN long * pnSizeIndex)
{
// This is horrible from a perf perspective, but we only do it once on upgrade.
long nCount;
HRESULT hr = E_FAIL;
*pnStyleIndex = 0;
*pnSizeIndex = 0;
if (SUCCEEDED(get_length(&nCount)))
{
IThemeStyle * pThemeStyle2;
for (long nIndex = 0; nIndex < nCount; nIndex++)
{
VARIANT var;
var.vt = VT_I4;
var.lVal = nIndex;
if (SUCCEEDED(get_item(var, &pThemeStyle2)))
{
CComBSTR bstrStyle2;
if (SUCCEEDED(pThemeStyle2->get_DisplayName(&bstrStyle2)))
{
CComBSTR bstrName;
if (!StrCmpIW(bstrStyleDisplayName, bstrStyle2) ||
(SUCCEEDED(pThemeStyle2->get_Name(&bstrName)) &&
!StrCmpIW(bstrStyleDisplayName, bstrName)))
{
*pnStyleIndex = nIndex;
hr = _getSizeIndex(pThemeStyle, pThemeSize, bstrSizeDisplayName, pnSizeIndex);
nIndex = nCount; // End the search.
}
}
pThemeStyle2->Release();
}
}
}
return hr;
}
HRESULT CAppearanceScheme::_ConvertScheme(LPCTSTR pszLegacyName, // This is the Legacy Name
LPCTSTR pszStyleName, LPCTSTR pszSizeName, SYSTEMMETRICSALL * pState,
IN enumThemeContrastLevels ContrastLevel, IN BOOL fSetAsDefault, IN BOOL fSetRegKeyTitle)
{
// This is custom user created scheme.
IThemeStyle * pThemeStyle;
CComVariant varDisplayNameBSTR(pszStyleName);
HRESULT hr = get_item(varDisplayNameBSTR, &pThemeStyle);
if (FAILED(hr))
{
// If it doesn't exist, create one.
hr = _AddStyle((fSetRegKeyTitle ? pszStyleName : NULL), &pThemeStyle);
}
if (SUCCEEDED(hr))
{
CComBSTR bstrStyleDisplayName(pszStyleName);
hr = pThemeStyle->put_DisplayName(bstrStyleDisplayName);
if (SUCCEEDED(hr))
{
IThemeSize * pThemeSize;
hr = pThemeStyle->AddSize(&pThemeSize);
if (SUCCEEDED(hr))
{
CComBSTR bstrSizeDisplayName(pszSizeName);
hr = pThemeSize->put_DisplayName(bstrSizeDisplayName);
if (SUCCEEDED(hr))
{
hr = SystemMetricsAll_Save(pState, pThemeSize, FALSE);
if (SUCCEEDED(hr))
{
// Set the contrast level.
hr = pThemeSize->put_ContrastLevel(ContrastLevel);
if (SUCCEEDED(hr))
{
IPropertyBag * pPropertyBag;
hr = pThemeSize->QueryInterface(IID_PPV_ARG(IPropertyBag, &pPropertyBag));
if (SUCCEEDED(hr))
{
hr = SHPropertyBag_WriteStr(pPropertyBag, SZ_PBPROP_COLORSCHEME_LEGACYNAME, pszLegacyName);
pPropertyBag->Release();
}
}
}
}
if (fSetAsDefault && SUCCEEDED(hr))
{
long nStyleIndex;
long nSizeIndex;
hr = _getIndex(pThemeStyle, bstrStyleDisplayName, &nStyleIndex, pThemeSize, bstrSizeDisplayName, &nSizeIndex);
if (SUCCEEDED(hr))
{
TCHAR szData[10];
wnsprintf(szData, ARRAYSIZE(szData), TEXT("%d"), nStyleIndex);
DWORD cbSize = ((lstrlen(szData) + 1) * sizeof(szData[0]));
hr = HrSHSetValue(m_hKeyScheme, NULL, SZ_REGVALUE_SELECTEDSTYLE, REG_SZ, (LPVOID) szData, cbSize);
if (SUCCEEDED(hr))
{
TCHAR szData2[10];
wnsprintf(szData2, ARRAYSIZE(szData2), TEXT("%d"), nSizeIndex);
DWORD cbSize = ((lstrlen(szData2) + 1) * sizeof(szData2[0]));
hr = HrSHSetValue(m_hKeyScheme, szData, SZ_REGVALUE_SELECTEDSIZE, REG_SZ, (LPVOID) szData2, cbSize);
}
}
}
pThemeSize->Release();
}
}
pThemeStyle->Release();
}
return hr;
}
HRESULT LoadCurrentStyle(LPTSTR pszCurrentStyle, int cchSize)
{
HKEY hkey;
HRESULT hr = HrRegOpenKeyEx(HKEY_CURRENT_USER, REGSTR_PATH_APPEARANCE, 0, KEY_READ, &hkey);
if (SUCCEEDED(hr))
{
DWORD dwSize = (DWORD)(cchSize * sizeof(pszCurrentStyle[0]));
hr = HrRegQueryValueEx(hkey, REGSTR_KEY_CURRENT, NULL, NULL, (LPBYTE)pszCurrentStyle, &dwSize);
RegCloseKey(hkey);
}
return hr;
}
// This function will do nothing if an upgrade isn't needed.
HRESULT CAppearanceScheme::_InitReg(void)
{
HRESULT hr = S_OK;
if (!m_hKeyScheme)
{
hr = HrRegOpenKeyEx(HKEY_CURRENT_USER, SZ_APPEARANCE_NEWSCHEMES, 0, (KEY_WRITE | KEY_READ), &m_hKeyScheme);
if (SUCCEEDED(hr))
{
// We don't need to upgrade.
}
else
{
// Here is where we need to do the upgrade.
hr = HrRegCreateKeyEx(HKEY_CURRENT_USER, SZ_APPEARANCE_NEWSCHEMES, 0, NULL, REG_OPTION_NON_VOLATILE,
(KEY_WRITE | KEY_READ), NULL, &m_hKeyScheme, 0);
if (SUCCEEDED(hr))
{
HKEY hKeyOld;
hr = HrRegCreateKeyEx(HKEY_CURRENT_USER, SZ_APPEARANCE_SCHEMES, 0, NULL, REG_OPTION_NON_VOLATILE, KEY_READ, NULL, &hKeyOld, 0);
if (SUCCEEDED(hr))
{
TCHAR szCurrentStyle[MAX_PATH];
TCHAR szSchemeName[MAX_PATH];
TCHAR szDefaultScheme[MAX_PATH];
DWORD dwIndex = 0;
// Load in the upgrade mappings.
hr = LoadConversionMappings();
LoadString(HINST_THISDLL, IDS_DEFAULT_APPEARANCES_SCHEME, szDefaultScheme, ARRAYSIZE(szDefaultScheme));
hr = LoadCurrentStyle(szCurrentStyle, ARRAYSIZE(szCurrentStyle));
if (FAILED(hr))
{
// This will fail if the user never changed the legacy "Appearance Scheme".
LoadString(HINST_THISDLL, IDS_DEFAULT_APPEARANCES_SCHEME, szCurrentStyle, ARRAYSIZE(szCurrentStyle));
hr = S_OK;
}
// Now let's walk thru each one and convert it.
while (SUCCEEDED(hr))
{
DWORD dwType;
DWORD cbSize = sizeof(szSchemeName);
hr = HrRegEnumValue(hKeyOld, dwIndex, szSchemeName, &cbSize, NULL, &dwType, NULL, NULL);
if (SUCCEEDED(hr) && (REG_BINARY == dwType))
{
BOOL fSetAsDefault = !StrCmpI(szCurrentStyle, szSchemeName);
SYSTEMMETRICSALL state = {0};
hr = Look_GetSchemeData(hKeyOld, szSchemeName, &state.schemeData);
if (SUCCEEDED(hr))
{
state.schemeData.rgb[COLOR_MENUBAR] = state.schemeData.rgb[COLOR_MENU];
state.schemeData.rgb[COLOR_MENUHILIGHT] = state.schemeData.rgb[COLOR_MENUTEXT];
// See if this is one of the shipping Appearance Schemes, so we want to create it
// special.
hr = _IsLegacyUpgradeConvert(szSchemeName, &state, fSetAsDefault);
if (FAILED(hr))
{
// No, so we will upgrade it as a custom item.
hr = _CustomConvert(szSchemeName, &state, fSetAsDefault, FALSE);
}
// On Upgrade, we need to copy "Windows Standard" to "Current Settings SaveNoVisualStyle".
// That way, when the user toggles from "Professional VS" to "Windows Classic VS", we
// load those colors as the first alternative to visual styles off. Win #151831
if (!StrCmpI(szDefaultScheme, szSchemeName))
{
hr = _CustomConvert(SZ_SAVEGROUP_NOSKIN_TITLE, &state, FALSE, TRUE);
}
}
}
dwIndex++;
}
hr = S_OK;
RegCloseKey(hKeyOld);
}
}
}
}
return hr;
}
HRESULT CAppearanceScheme::_getStyleByIndex(IN long nIndex, OUT IThemeStyle ** ppThemeStyle)
{
HRESULT hr = _InitReg();
if (SUCCEEDED(hr))
{
HKEY hKeyStyle;
TCHAR szKeyName[MAXIMUM_SUB_KEY_LENGTH];
wnsprintf(szKeyName, ARRAYSIZE(szKeyName), TEXT("%d"), nIndex);
hr = HrRegOpenKeyEx(m_hKeyScheme, szKeyName, 0, (KEY_WRITE | KEY_READ), &hKeyStyle);
if (SUCCEEDED(hr))
{
hr = CAppearanceStyle_CreateInstance(hKeyStyle, ppThemeStyle); // This function takes ownership of hKey
if (FAILED(hr))
{
RegCloseKey(hKeyStyle);
}
}
}
return hr;
}
HRESULT CAppearanceScheme::_getCurrentSettings(IN LPCWSTR pszSettings, OUT IThemeStyle ** ppThemeStyle)
{
HRESULT hr = _InitReg();
if (SUCCEEDED(hr))
{
WCHAR szRegValue[MAXIMUM_VALUE_NAME_LENGTH];
HKEY hKeyStyle;
StrCpyNW(szRegValue, SZ_REGVALUE_CURRENT_SETTINGS, ARRAYSIZE(szRegValue));
StrCatBuffW(szRegValue, &pszSettings[2], ARRAYSIZE(szRegValue));
hr = HrRegCreateKeyEx(m_hKeyScheme, szRegValue, 0, NULL, REG_OPTION_NON_VOLATILE, (KEY_WRITE | KEY_READ), NULL, &hKeyStyle, NULL);
if (SUCCEEDED(hr))
{
hr = CAppearanceStyle_CreateInstance(hKeyStyle, ppThemeStyle); // This function takes ownership of hKey
if (FAILED(hr))
{
RegCloseKey(hKeyStyle);
}
}
}
return hr;
}
//===========================
// *** ITheme Interface ***
//===========================
HRESULT CAppearanceScheme::get_DisplayName(OUT BSTR * pbstrDisplayName)
{
WCHAR szDisplayName[MAX_PATH];
LoadString(HINST_THISDLL, IDS_NO_SKIN_DISPLAYNAME, szDisplayName, ARRAYSIZE(szDisplayName));
return HrSysAllocStringW(szDisplayName, pbstrDisplayName);
}
HRESULT CAppearanceScheme::get_length(OUT long * pnLength)
{
HRESULT hr = E_INVALIDARG;
if (pnLength)
{
*pnLength = 0;
hr = _InitReg();
if (SUCCEEDED(hr))
{
DWORD dwValues = 0;
hr = HrRegQueryInfoKey(m_hKeyScheme, NULL, NULL, NULL, &dwValues, NULL, NULL, NULL, NULL, NULL, NULL, NULL);
if (SUCCEEDED(hr))
{
HKEY hKeyTemp;
if (SUCCEEDED(HrRegOpenKeyEx(m_hKeyScheme, SZ_REGVALUE_CURRENT_SETTINGS, 0, KEY_READ, &hKeyTemp)))
{
dwValues--; // We want to subtract one for the "Current Settings" key.
RegCloseKey(hKeyTemp);
}
}
*pnLength = (long) dwValues;
}
}
return hr;
}
HRESULT CAppearanceScheme::get_item(IN VARIANT varIndex, OUT IThemeStyle ** ppThemeStyle)
{
HRESULT hr = E_INVALIDARG;
if (ppThemeStyle)
{
long nCount = 0;
get_length(&nCount);
*ppThemeStyle = NULL;
// This is sortof gross, but if we are passed a pointer to another variant, simply
// update our copy here...
if (varIndex.vt == (VT_BYREF | VT_VARIANT) && varIndex.pvarVal)
varIndex = *(varIndex.pvarVal);
switch (varIndex.vt)
{
case VT_I2:
varIndex.lVal = (long)varIndex.iVal;
// And fall through...
case VT_I4:
if ((varIndex.lVal >= 0) && (varIndex.lVal < nCount))
{
hr = _getStyleByIndex(varIndex.lVal, ppThemeStyle);
}
break;
case VT_BSTR:
if (varIndex.bstrVal)
{
if ((L':' == varIndex.bstrVal[0]) && (L':' == varIndex.bstrVal[1]))
{
// This is a "Custom" settings so look in that key.
hr = _getCurrentSettings(varIndex.bstrVal, ppThemeStyle);
}
else
{
for (int nIndex = 0; FAILED(hr) && (nIndex < nCount); nIndex++)
{
IThemeStyle * pThemeStyle;
if (SUCCEEDED(_getStyleByIndex(nIndex, &pThemeStyle)))
{
CComBSTR bstrDisplayName;
if (SUCCEEDED(pThemeStyle->get_DisplayName(&bstrDisplayName)))
{
if (!StrCmpIW(bstrDisplayName, varIndex.bstrVal))
{
// They match, so this is the one.
*ppThemeStyle = pThemeStyle;
pThemeStyle = NULL;
hr = S_OK;
}
}
if (FAILED(hr))
{
if (bstrDisplayName)
{
bstrDisplayName.Empty();
}
if (SUCCEEDED(pThemeStyle->get_Name(&bstrDisplayName)))
{
if (!StrCmpIW(bstrDisplayName, varIndex.bstrVal))
{
// They match, so this is the one.
*ppThemeStyle = pThemeStyle;
pThemeStyle = NULL;
hr = S_OK;
}
}
}
ATOMICRELEASE(pThemeStyle);
}
}
}
}
break;
default:
hr = E_NOTIMPL;
}
}
return hr;
}
HRESULT CAppearanceScheme::get_SelectedStyle(OUT IThemeStyle ** ppThemeStyle)
{
HRESULT hr = E_INVALIDARG;
if (ppThemeStyle)
{
hr = _InitReg();
if (SUCCEEDED(hr))
{
TCHAR szKeyName[MAXIMUM_SUB_KEY_LENGTH];
DWORD cbSize = sizeof(szKeyName);
*ppThemeStyle = NULL;
hr = HrSHGetValue(m_hKeyScheme, NULL, SZ_REGVALUE_SELECTEDSTYLE, NULL, szKeyName, &cbSize);
if (FAILED(hr))
{
// "21" is the Appearance Scheme of "Windows Classic".
StrCpyN(szKeyName, TEXT("21"), ARRAYSIZE(szKeyName));
hr = S_OK;
}
if (SUCCEEDED(hr))
{
HKEY hKeyStyle;
// Let's find the next empty slot
hr = HrRegOpenKeyEx(m_hKeyScheme, szKeyName, 0, (KEY_WRITE | KEY_READ), &hKeyStyle);
if (SUCCEEDED(hr))
{
hr = CAppearanceStyle_CreateInstance(hKeyStyle, ppThemeStyle); // This function takes ownership of hKeyStyle
if (FAILED(hr))
{
RegCloseKey(hKeyStyle);
}
}
}
}
}
return hr;
}
HRESULT CAppearanceScheme::put_SelectedStyle(IN IThemeStyle * pThemeStyle)
{
HRESULT hr = E_INVALIDARG;
if (pThemeStyle)
{
hr = _InitReg();
if (SUCCEEDED(hr))
{
TCHAR szKeyName[MAXIMUM_SUB_KEY_LENGTH];
CComBSTR bstrDisplayNameSource;
hr = pThemeStyle->get_DisplayName(&bstrDisplayNameSource);
if (SUCCEEDED(hr))
{
for (int nIndex = 0; SUCCEEDED(hr); nIndex++)
{
IThemeStyle * pThemeStyleInList;
hr = _getStyleByIndex(nIndex, &pThemeStyleInList);
if (SUCCEEDED(hr))
{
CComBSTR bstrDisplayName;
hr = pThemeStyleInList->get_DisplayName(&bstrDisplayName);
ATOMICRELEASE(pThemeStyleInList);
if (SUCCEEDED(hr))
{
if (!StrCmpIW(bstrDisplayName, bstrDisplayNameSource))
{
// They match, so this is the one.
wnsprintf(szKeyName, ARRAYSIZE(szKeyName), TEXT("%d"), nIndex);
break;
}
}
}
}
}
if (SUCCEEDED(hr))
{
DWORD cbSize = ((lstrlen(szKeyName) + 1) * sizeof(szKeyName[0]));
hr = HrSHSetValue(m_hKeyScheme, NULL, SZ_REGVALUE_SELECTEDSTYLE, REG_SZ, szKeyName, cbSize);
}
}
}
return hr;
}
HRESULT CAppearanceScheme::_AddStyle(IN LPCWSTR pszTitle, OUT IThemeStyle ** ppThemeStyle)
{
HRESULT hr = E_INVALIDARG;
if (ppThemeStyle)
{
*ppThemeStyle = NULL;
hr = _InitReg();
if (SUCCEEDED(hr))
{
if (pszTitle)
{
HKEY hKeyStyle;
hr = HrRegCreateKeyEx(m_hKeyScheme, pszTitle, 0, NULL, REG_OPTION_NON_VOLATILE, (KEY_WRITE | KEY_READ), NULL, &hKeyStyle, NULL);
if (SUCCEEDED(hr))
{
hr = CAppearanceStyle_CreateInstance(hKeyStyle, ppThemeStyle); // This function takes ownership of hKey
if (FAILED(hr))
{
RegCloseKey(hKeyStyle);
}
}
}
else
{
// Find an empty Scheme Name.
for (int nIndex = 0; nIndex < 10000; nIndex++)
{
HKEY hKeyStyle;
TCHAR szKeyName[MAXIMUM_SUB_KEY_LENGTH];
wnsprintf(szKeyName, ARRAYSIZE(szKeyName), TEXT("%d"), nIndex);
// Let's find the next empty spot
hr = HrRegOpenKeyEx(m_hKeyScheme, szKeyName, 0, KEY_READ, &hKeyStyle);
if (SUCCEEDED(hr))
{
RegCloseKey(hKeyStyle);
}
else
{
hr = HrRegCreateKeyEx(m_hKeyScheme, szKeyName, 0, NULL, REG_OPTION_NON_VOLATILE, (KEY_WRITE | KEY_READ), NULL, &hKeyStyle, NULL);
if (SUCCEEDED(hr))
{
hr = CAppearanceStyle_CreateInstance(hKeyStyle, ppThemeStyle); // This function takes ownership of hKey
if (FAILED(hr))
{
RegCloseKey(hKeyStyle);
}
}
break;
}
}
}
}
}
return hr;
}
//===========================
// *** IUnknown Interface ***
//===========================
ULONG CAppearanceScheme::AddRef()
{
return InterlockedIncrement(&m_cRef);
}
ULONG CAppearanceScheme::Release()
{
if (InterlockedDecrement(&m_cRef))
return m_cRef;
delete this;
return 0;
}
//===========================
// *** Class Methods ***
//===========================
HRESULT CAppearanceScheme::QueryInterface(REFIID riid, void **ppvObj)
{
static const QITAB qit[] = {
QITABENT(CAppearanceScheme, IPersist),
QITABENT(CAppearanceScheme, IThemeScheme),
QITABENT(CAppearanceScheme, IDispatch),
{ 0 },
};
return QISearch(this, qit, riid, ppvObj);
}
CAppearanceScheme::CAppearanceScheme(void) : CImpIDispatch(LIBID_Theme, 1, 0, IID_IThemeScheme), CObjectCLSID(&CLSID_LegacyAppearanceScheme), m_cRef(1)
{
DllAddRef();
// This needs to be allocated in Zero Inited Memory.
// Assert that all Member Variables are inited to Zero.
ASSERT(!m_hKeyScheme);
}
CAppearanceScheme::~CAppearanceScheme()
{
if (m_hKeyScheme)
{
RegCloseKey(m_hKeyScheme);
}
DllRelease();
}
HRESULT CAppearanceScheme_CreateInstance(IN IUnknown * punkOuter, IN REFIID riid, OUT LPVOID * ppvObj)
{
HRESULT hr = E_INVALIDARG;
if (punkOuter)
{
return CLASS_E_NOAGGREGATION;
}
if (ppvObj)
{
CAppearanceScheme * pObject = new CAppearanceScheme();
*ppvObj = NULL;
if (pObject)
{
hr = pObject->QueryInterface(riid, ppvObj);
pObject->Release();
}
else
{
hr = E_OUTOFMEMORY;
}
}
return hr;
}