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windows-nt/Source/XPSP1/NT/shell/browseui/rgtreeop.cpp

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2020-09-26 03:20:57 -05:00
#include "priv.h"
#include "resource.h"
#include "tmschema.h"
#include "uxtheme.h"
#include "uxthemep.h"
#include "mluisupp.h"
#include <oleacc.h>
#include <cowsite.h>
#include <apithk.h>
const struct
{
TREE_TYPE type;
LPCTSTR name;
} c_aTreeTypes[] =
{
{TREE_CHECKBOX, TEXT("checkbox")},
{TREE_RADIO, TEXT("radio")},
{TREE_GROUP, TEXT("group")}
};
const TCHAR c_szType[] = TEXT("Type");
const TCHAR c_szText[] = TEXT("Text");
const TCHAR c_szPlugUIText[] = TEXT("PlugUIText");
const TCHAR c_szDefaultBitmap[] = TEXT("Bitmap");
const TCHAR c_szHKeyRoot[] = TEXT("HKeyRoot");
const TCHAR c_szValueName[] = TEXT("ValueName");
const TCHAR c_szCheckedValue[] = TEXT("CheckedValue");
const TCHAR c_szUncheckedValue[] = TEXT("UncheckedValue");
const TCHAR c_szDefaultValue[] = TEXT("DefaultValue");
const TCHAR c_szSPIActionGet[] = TEXT("SPIActionGet");
const TCHAR c_szSPIActionSet[] = TEXT("SPIActionSet");
const TCHAR c_szCLSID[] = TEXT("CLSID");
const TCHAR c_szCheckedValueNT[] = TEXT("CheckedValueNT");
const TCHAR c_szCheckedValueW95[] = TEXT("CheckedValueW95");
const TCHAR c_szMask[] = TEXT("Mask");
const TCHAR c_szOffset[] = TEXT("Offset");
const TCHAR c_szHelpID[] = TEXT("HelpID");
const TCHAR c_szWarning[] = TEXT("WarningIfNotDefault");
#define BITMAP_WIDTH 16
#define BITMAP_HEIGHT 16
#define NUM_BITMAPS 5
#define MAX_KEY_NAME 64
DWORD RegTreeType(LPCTSTR pszType);
BOOL AppendStatus(LPTSTR pszText, UINT cbText, BOOL fOn);
BOOL IsScreenReaderEnabled();
class CRegTreeOptions : public IRegTreeOptions, public CObjectWithSite
{
public:
CRegTreeOptions();
IUnknown *GetUnknown() { return SAFECAST(this, IRegTreeOptions*); }
// IUnknown Methods
STDMETHODIMP QueryInterface(REFIID,void **);
STDMETHODIMP_(ULONG) AddRef(void);
STDMETHODIMP_(ULONG) Release(void);
// IRegTreeOptions Methods
STDMETHODIMP InitTree(HWND hwndTree, HKEY hkeyRoot, LPCSTR pszRegKey, LPCSTR pszParam);
STDMETHODIMP WalkTree(WALK_TREE_CMD cmd);
STDMETHODIMP ShowHelp(HTREEITEM hti, DWORD dwFlags);
STDMETHODIMP ToggleItem(HTREEITEM hti);
protected:
~CRegTreeOptions();
void _RegEnumTree(HUSKEY huskey, HTREEITEM htviparent, HTREEITEM htvins);
int _DefaultIconImage(HUSKEY huskey, int iImage);
DWORD _GetCheckStatus(HUSKEY huskey, BOOL *pbChecked, BOOL bUseDefault);
DWORD _GetSetByCLSID(REFCLSID clsid, BOOL *pbData, BOOL fGet);
DWORD _GetSetByRegKey(HUSKEY husKey, DWORD *pType, LPBYTE pData, DWORD *pcbData, REG_CMD cmd);
DWORD _RegGetSetSetting(HUSKEY husKey, DWORD *pType, LPBYTE pData, DWORD *pcbData, REG_CMD cmd);
BOOL _WalkTreeRecursive(HTREEITEM htvi,WALK_TREE_CMD cmd);
DWORD _SaveCheckStatus(HUSKEY huskey, BOOL bChecked);
BOOL _RegIsRestricted(HUSKEY hussubkey);
UINT _cRef;
HWND _hwndTree;
LPTSTR _pszParam;
HIMAGELIST _hIml;
};
//////////////////////////////////////////////////////////////////////////////
//
// CRegTreeOptions Object
//
//////////////////////////////////////////////////////////////////////////////
STDAPI CRegTreeOptions_CreateInstance(IUnknown* pUnkOuter, IUnknown** ppunk, LPCOBJECTINFO poi)
{
// aggregation checking is handled in class factory
TraceMsg(DM_TRACE, "rto - CreateInstance(...) called");
CRegTreeOptions *pTO = new CRegTreeOptions();
if (pTO)
{
*ppunk = pTO->GetUnknown();
return S_OK;
}
return E_OUTOFMEMORY;
}
CRegTreeOptions::CRegTreeOptions()
{
TraceMsg(DM_TRACE, "rto - CRegTreeOptions() called.");
_cRef = 1;
DllAddRef();
}
CRegTreeOptions::~CRegTreeOptions()
{
ASSERT(_cRef == 0); // should always have zero
TraceMsg(DM_TRACE, "rto - ~CRegTreeOptions() called.");
Str_SetPtr(&_pszParam, NULL);
DllRelease();
}
//////////////////////////////////
//
// IUnknown Methods...
//
HRESULT CRegTreeOptions::QueryInterface(REFIID riid, void **ppv)
{
static const QITAB qit[] = {
QITABENT(CRegTreeOptions, IRegTreeOptions), // IID_IRegTreeOptions
QITABENT(CRegTreeOptions, IObjectWithSite), // IID_IObjectWithSite
{ 0 },
};
return QISearch(this, qit, riid, ppv);
}
ULONG CRegTreeOptions::AddRef()
{
TraceMsg(DM_TRACE, "rto - AddRef() called.");
return ++_cRef;
}
ULONG CRegTreeOptions::Release()
{
TraceMsg(DM_TRACE, "rto - Release() called.");
if (--_cRef)
return _cRef;
// destroy the imagelist
if (_hwndTree)
{
ImageList_Destroy(TreeView_SetImageList(_hwndTree, NULL, TVSIL_NORMAL));
// Clean up the accessibility stuff
RemoveProp(_hwndTree, TEXT("MSAAStateImageMapCount"));
RemoveProp(_hwndTree, TEXT("MSAAStateImageMapAddr"));
}
delete this;
return 0;
}
//////////////////////////////////
//
// IRegTreeOptions Methods...
//
//
// Accessibility structure so it knows how to convert treeview state images
// into accessibility roles and states.
//
struct MSAASTATEIMAGEMAPENT
{
DWORD dwRole;
DWORD dwState;
};
const struct MSAASTATEIMAGEMAPENT c_rgimeTree[] =
{
{ ROLE_SYSTEM_CHECKBUTTON, STATE_SYSTEM_CHECKED }, // IDCHECKED
{ ROLE_SYSTEM_CHECKBUTTON, 0 }, // IDUNCHECKED
{ ROLE_SYSTEM_RADIOBUTTON, STATE_SYSTEM_CHECKED }, // IDRADIOON
{ ROLE_SYSTEM_RADIOBUTTON, 0 }, // IDRADIOOFF
{ ROLE_SYSTEM_OUTLINE, 0 }, // IDUNKNOWN
};
HBITMAP CreateDIB(HDC h, int cx, int cy, RGBQUAD** pprgb)
{
BITMAPINFO bi = {0};
bi.bmiHeader.biSize = sizeof(bi.bmiHeader);
bi.bmiHeader.biWidth = cx;
bi.bmiHeader.biHeight = cy;
bi.bmiHeader.biPlanes = 1;
bi.bmiHeader.biBitCount = 32;
bi.bmiHeader.biCompression = BI_RGB;
return CreateDIBSection(h, &bi, DIB_RGB_COLORS, (void**)pprgb, NULL, 0);
}
HRESULT CRegTreeOptions::InitTree(HWND hwndTree, HKEY hkeyRoot, LPCSTR pszRegKey, LPCSTR pszParam)
{
// all callers pass HKEY_LOCAL_MACHINE, yay what a cool interface
// assert that this is so, since the HUSKEY code now relies on being able to switch between
// HKCU and HKLM.
ASSERT(hkeyRoot == HKEY_LOCAL_MACHINE);
TCHAR szParam[MAX_URL_STRING];
TraceMsg(DM_TRACE, "rto - InitTree called().");
UINT flags = ILC_MASK | (IsOS(OS_WHISTLERORGREATER)?ILC_COLOR32:ILC_COLOR);
if (!hkeyRoot || !pszRegKey)
return E_INVALIDARG;
if (pszParam)
{
SHAnsiToTChar(pszParam, szParam, ARRAYSIZE(szParam));
Str_SetPtr(&_pszParam, szParam); // be sure to free in destructor
}
_hwndTree = hwndTree;
if(IS_WINDOW_RTL_MIRRORED(_hwndTree))
{
flags |= ILC_MIRROR;
}
_hIml = ImageList_Create(BITMAP_WIDTH, BITMAP_HEIGHT, flags, NUM_BITMAPS, 4);
// Initialize the tree view window.
SHSetWindowBits(_hwndTree, GWL_STYLE, TVS_CHECKBOXES, 0);
HBITMAP hBitmap = 0;
#ifdef UNIX
// IEUNIX (Varma): an ugly hack to workaround _AddMasked api problems while
// creating masked bitmaps. Need to create DIBSection from
// CreateMappedBitmap. This is to fix buttons visibility on mono when black
if (SHGetCurColorRes() < 2)
{
hBitmap = CreateMappedBitmap(g_hinst, IDB_BUTTONS, CMB_MASKED, NULL, 0);
if (hBitmap)
{
ImageList_Add(_hIml, hBitmap, NULL);
// Delete hBitmap in common further down this codepath
}
}
else
#endif
{
HTHEME hTheme = OpenThemeData(NULL, L"Button");
if (hTheme)
{
HDC hdc = CreateCompatibleDC(NULL);
if (hdc)
{
HBITMAP hbmp = CreateDIB(hdc, BITMAP_WIDTH, BITMAP_HEIGHT, NULL);
if (hbmp)
{
RECT rc = {0, 0, BITMAP_WIDTH, BITMAP_HEIGHT};
static const s_rgParts[] = {BP_CHECKBOX,BP_CHECKBOX,BP_RADIOBUTTON,BP_RADIOBUTTON};
static const s_rgStates[] = {CBS_CHECKEDNORMAL, CBS_UNCHECKEDNORMAL, RBS_CHECKEDNORMAL, RBS_UNCHECKEDNORMAL};
for (int i = 0; i < ARRAYSIZE(s_rgParts); i++)
{
HBITMAP hOld = (HBITMAP)SelectObject(hdc, hbmp);
SHFillRectClr(hdc, &rc, RGB(0,0,0));
DTBGOPTS dtbg = {sizeof(DTBGOPTS), DTBG_DRAWSOLID, 0,}; // tell drawthemebackground to preserve the alpha channel
DrawThemeBackgroundEx(hTheme, hdc, s_rgParts[i], s_rgStates[i], &rc, &dtbg);
SelectObject(hdc, hOld);
ImageList_Add(_hIml, hbmp, NULL);
}
DeleteObject(hbmp);
// Hate this. Maybe get an authored icon?
hBitmap = CreateMappedBitmap(g_hinst, IDB_GROUPBUTTON, 0, NULL, 0);
if (hBitmap)
{
ImageList_AddMasked(_hIml, hBitmap, CLR_DEFAULT);
// Delete hBitmap in common further down the codepath
}
}
DeleteDC(hdc);
}
CloseThemeData(hTheme);
}
else
{
hBitmap = CreateMappedBitmap(g_hinst, IDB_BUTTONS, 0, NULL, 0);
if (hBitmap)
{
ImageList_AddMasked(_hIml, hBitmap, CLR_DEFAULT);
// Delete hBitmap in common further down the codepath
}
}
}
if (hBitmap)
DeleteObject(hBitmap);
// Associate the image list with the tree.
HIMAGELIST himl = TreeView_SetImageList(_hwndTree, _hIml, TVSIL_NORMAL);
if (himl)
ImageList_Destroy(himl);
// Let accessibility know about our state images
SetProp(_hwndTree, TEXT("MSAAStateImageMapCount"), LongToPtr(ARRAYSIZE(c_rgimeTree)));
SetProp(_hwndTree, TEXT("MSAAStateImageMapAddr"), (HANDLE)c_rgimeTree);
HUSKEY huskey;
if (ERROR_SUCCESS == SHRegOpenUSKeyA(pszRegKey, KEY_READ, NULL, &huskey, FALSE))
{
_RegEnumTree(huskey, NULL, TVI_ROOT);
SHRegCloseUSKey(huskey);
}
return S_OK;
}
HRESULT CRegTreeOptions::WalkTree(WALK_TREE_CMD cmd)
{
HTREEITEM htvi = TreeView_GetRoot(_hwndTree);
// and walk the list of other roots
while (htvi)
{
// recurse through its children
_WalkTreeRecursive(htvi, cmd);
// get the next root
htvi = TreeView_GetNextSibling(_hwndTree, htvi);
}
return S_OK; // success?
}
HRESULT _LoadUSRegUIString(HUSKEY huskey, PCTSTR pszValue, PTSTR psz, UINT cch)
{
psz[0] = 0;
HRESULT hr = E_FAIL;
TCHAR szIndirect[MAX_PATH];
DWORD cb = sizeof(szIndirect);
if (ERROR_SUCCESS == SHRegQueryUSValue(huskey, pszValue, NULL, szIndirect, &cb, FALSE, NULL, 0))
{
hr = SHLoadIndirectString(szIndirect, psz, cch, NULL);
}
return hr;
}
HRESULT CRegTreeOptions::ToggleItem(HTREEITEM hti)
{
TV_ITEM tvi;
TCHAR szText[MAX_PATH];
tvi.hItem = hti;
tvi.mask = TVIF_HANDLE | TVIF_IMAGE | TVIF_SELECTEDIMAGE | TVIF_TEXT | TVIF_PARAM;
tvi.pszText = szText;
tvi.cchTextMax = ARRAYSIZE(szText);
if (hti && TreeView_GetItem(_hwndTree, &tvi))
{
BOOL bScreenReaderEnabled = IsScreenReaderEnabled();
HUSKEY huskey = (HUSKEY)tvi.lParam;
TCHAR szMsg[512];
if (SUCCEEDED(_LoadUSRegUIString(huskey, c_szWarning, szMsg, ARRAYSIZE(szMsg))))
{
BOOL bDefaultState, bCurrentState = (tvi.iImage == IDCHECKED) || (tvi.iImage == IDRADIOON);
if (ERROR_SUCCESS == _GetCheckStatus(huskey, &bDefaultState, TRUE))
{
// trying to change the current state to the non recomended state?
if (bDefaultState == bCurrentState)
{
if (MLShellMessageBox(_hwndTree, szMsg, MAKEINTRESOURCE(IDS_WARNING), (MB_YESNO | MB_DEFBUTTON2 | MB_ICONEXCLAMATION)) != IDYES)
{
return S_FALSE;
}
}
}
}
if (tvi.iImage == IDUNCHECKED)
{
tvi.iImage = IDCHECKED;
tvi.iSelectedImage = IDCHECKED;
//See if we need to add status text
if (bScreenReaderEnabled)
{
AppendStatus(szText, ARRAYSIZE(szText), TRUE);
}
TraceMsg(TF_GENERAL, "rto::ToggleItem() - Checked!");
}
else if (tvi.iImage == IDCHECKED)
{
tvi.iImage = IDUNCHECKED;
tvi.iSelectedImage = IDUNCHECKED;
//See if we need to add status text
if (bScreenReaderEnabled)
{
AppendStatus(szText, ARRAYSIZE(szText), FALSE);
}
TraceMsg(TF_GENERAL, "rto::ToggleItem() - Unchecked!");
}
else if ((tvi.iImage == IDRADIOON) || (tvi.iImage == IDRADIOOFF))
{
HTREEITEM htvi;
TV_ITEM otvi; // other tvi-s
TCHAR szOtext[MAX_PATH];
// change all the "on" radios to "off"
htvi = TreeView_GetParent(_hwndTree, tvi.hItem);
htvi = TreeView_GetChild(_hwndTree, htvi);
// hunt for the "on"s
while (htvi)
{
// get info about item
otvi.mask = TVIF_HANDLE | TVIF_IMAGE | TVIF_SELECTEDIMAGE | TVIF_TEXT;
otvi.hItem = htvi;
otvi.pszText = szOtext;
otvi.cchTextMax = ARRAYSIZE(szOtext);
if (TreeView_GetItem(_hwndTree, &otvi))
{
// is it a radio button that is on?
if (otvi.iImage == IDRADIOON)
{ // yes.. turn it off
otvi.iImage = IDRADIOOFF;
otvi.iSelectedImage = IDRADIOOFF;
//See if we need to add status text
if (bScreenReaderEnabled)
{
AppendStatus(szOtext,ARRAYSIZE(szOtext), FALSE);
}
TreeView_SetItem(_hwndTree, &otvi);
}
}
// find the next child
htvi = TreeView_GetNextSibling(_hwndTree, htvi);
}
// turn on the item that was hit
tvi.iImage = IDRADIOON;
tvi.iSelectedImage = IDRADIOON;
//See if we need to add status text
if (bScreenReaderEnabled)
{
AppendStatus(szText,ARRAYSIZE(szText), TRUE);
}
}
// change only if it is a checkbox or radio item
if (tvi.iImage <= IDUNKNOWN)
{
TreeView_SetItem(_hwndTree, &tvi);
}
}
return S_OK;
}
HRESULT CRegTreeOptions::ShowHelp(HTREEITEM hti, DWORD dwFlags)
{
TV_ITEM tvi;
tvi.mask = TVIF_HANDLE | TVIF_PARAM;
tvi.hItem = hti;
if (hti && TreeView_GetItem(_hwndTree, &tvi))
{
HUSKEY huskey = (HUSKEY)tvi.lParam;
TCHAR szHelpID[MAX_PATH+10]; // max path for helpfile + 10 for the help id
DWORD cbHelpID = sizeof(szHelpID);
if (SHRegQueryUSValue(huskey, c_szHelpID, NULL, szHelpID, &cbHelpID, FALSE, NULL, 0) == ERROR_SUCCESS)
{
LPTSTR psz = StrChr(szHelpID, TEXT('#'));
if (psz)
{
DWORD mapIDCToIDH[4];
*psz++ = 0; // NULL the '#'
mapIDCToIDH[0] = GetDlgCtrlID(_hwndTree);
mapIDCToIDH[1] = StrToInt(psz);
mapIDCToIDH[2] = 0;
mapIDCToIDH[3] = 0;
SHWinHelpOnDemandWrap(_hwndTree, szHelpID, dwFlags, (DWORD_PTR)mapIDCToIDH);
return S_OK;
}
}
}
return E_FAIL;
}
int CRegTreeOptions::_DefaultIconImage(HUSKEY huskey, int iImage)
{
TCHAR szIcon[MAX_PATH + 10]; // 10 = ",XXXX" plus some more
DWORD cb = sizeof(szIcon);
if (ERROR_SUCCESS == SHRegQueryUSValue(huskey, c_szDefaultBitmap, NULL, szIcon, &cb, FALSE, NULL, 0))
{
LPTSTR psz = StrRChr(szIcon, szIcon + lstrlen(szIcon), TEXT(','));
ASSERT(psz); // shouldn't be zero
if (!psz)
return iImage;
*psz++ = 0; // terminate and move over
int image = StrToInt(psz); // get ID
HICON hicon = NULL;
if (!*szIcon)
{
hicon = (HICON)LoadIcon(g_hinst, (LPCTSTR)(INT_PTR)image);
}
else
{
// get the bitmap from the library
ExtractIconEx(szIcon, (UINT)(-1*image), NULL, &hicon, 1);
if (!hicon)
ExtractIconEx(szIcon, (UINT)(-1*image), &hicon, NULL, 1);
}
if (hicon)
{
iImage = ImageList_AddIcon(_hIml, (HICON)hicon);
// NOTE: The docs say you don't need to do a delete object on icons loaded by LoadIcon, but
// you do for CreateIcon. It doesn't say what to do for ExtractIcon, so we'll just call it anyway.
DestroyIcon(hicon);
}
}
return iImage;
}
//
// The CLSID can either be a service ID (which we will QS for) or a CLSID
// that we CoCreateInstance.
//
DWORD CRegTreeOptions::_GetSetByCLSID(REFCLSID clsid, BOOL* pbData, BOOL fGet)
{
IRegTreeItem *pti;
HRESULT hr;
if (SUCCEEDED(hr = IUnknown_QueryService(_punkSite, clsid, IID_PPV_ARG(IRegTreeItem, &pti))) ||
SUCCEEDED(hr = CoCreateInstance(clsid, NULL, CLSCTX_ALL, IID_PPV_ARG(IRegTreeItem, &pti))))
{
hr = fGet ? pti->GetCheckState(pbData) : pti->SetCheckState(*pbData);
pti->Release();
}
return SUCCEEDED(hr) ? ERROR_SUCCESS : ERROR_BAD_FORMAT;
}
DWORD CRegTreeOptions::_GetSetByRegKey(HUSKEY husKey, DWORD *pType, LPBYTE pData, DWORD *pcbData, REG_CMD cmd)
{
// support for masks
DWORD dwMask;
DWORD cb = sizeof(dwMask);
dwMask = 0xFFFFFFFF; // Default value
BOOL fMask = (SHRegQueryUSValue(husKey, c_szMask, NULL, &dwMask, &cb, FALSE, NULL, 0) == ERROR_SUCCESS);
// support for structures
DWORD dwOffset;
cb = sizeof(dwOffset);
dwOffset = 0; // Default value
BOOL fOffset = (SHRegQueryUSValue(husKey, c_szOffset, NULL, &dwOffset, &cb, FALSE, NULL, 0) == ERROR_SUCCESS);
HKEY hkRoot = HKEY_CURRENT_USER; // Preinitialize to keep Win64 happy
cb = sizeof(DWORD); // DWORD, not sizeof(HKEY) or Win64 will get mad
DWORD dwError = SHRegQueryUSValue(husKey, c_szHKeyRoot, NULL, &hkRoot, &cb, FALSE, NULL, 0);
hkRoot = (HKEY) LongToHandle(HandleToLong(hkRoot));
if (dwError != ERROR_SUCCESS)
{
// use default
hkRoot = HKEY_CURRENT_USER;
}
// allow "RegPath9x" to override "RegPath" when running on Win9x
TCHAR szPath[MAX_PATH];
cb = sizeof(szPath);
if (!g_fRunningOnNT)
{
dwError = SHRegQueryUSValue(husKey, TEXT("RegPath9x"), NULL, szPath, &cb, FALSE, NULL, 0);
if (ERROR_SUCCESS != dwError)
{
cb = sizeof(szPath);
dwError = SHRegQueryUSValue(husKey, TEXT("RegPath"), NULL, szPath, &cb, FALSE, NULL, 0);
}
}
else
{
dwError = SHRegQueryUSValue(husKey, TEXT("RegPath"), NULL, szPath, &cb, FALSE, NULL, 0);
}
TCHAR szBuf[MAX_PATH];
LPTSTR pszPath;
if (ERROR_SUCCESS == dwError)
{
if (_pszParam)
{
wnsprintf(szBuf, ARRAYSIZE(szBuf), szPath, _pszParam);
pszPath = szBuf;
}
else
{
pszPath = szPath;
}
}
else
{
if (cmd == REG_GET)
return SHRegQueryUSValue(husKey, c_szDefaultValue, pType, pData, pcbData, FALSE, NULL, 0);
else
return dwError;
}
TCHAR szName[MAX_PATH];
cb = sizeof(szName);
dwError = SHRegQueryUSValue(husKey, c_szValueName, NULL, szName, &cb, FALSE, NULL, 0);
if (dwError == ERROR_SUCCESS)
{
HKEY hKeyReal;
DWORD dw;
dwError = RegCreateKeyEx(hkRoot, pszPath, 0, NULL, 0, KEY_READ | KEY_WRITE, NULL, &hKeyReal, &dw);
if (dwError == ERROR_SUCCESS)
{
switch (cmd)
{
case REG_SET:
if (fOffset || fMask)
{
DWORD cbData;
// Note: It so happens that the Valuename maynot be in the registry so we
// to make sure that we have the valuename already in the registry.
//Try to do a SHRegQueryValue
dwError = SHQueryValueEx(hKeyReal, szName, NULL, NULL, NULL, &cbData);
//Does the Value exists ?
if (dwError == ERROR_FILE_NOT_FOUND)
{
//We dont have the Valuename in the registry so create it.
DWORD dwTypeDefault, dwDefault, cbDefault = sizeof(dwDefault);
dwError = SHRegQueryUSValue(husKey, c_szDefaultValue, &dwTypeDefault, &dwDefault, &cbDefault, FALSE, NULL, 0);
//This should succeed . if not then someone messed up the registry setting
if (dwError == ERROR_SUCCESS)
{
dwError = SHSetValue(hKeyReal, NULL, szName, dwTypeDefault, &dwDefault, cbDefault);
//By setting this value we dont have to do the failed (see above) Query again
cbData = cbDefault;
}
}
// Now we know for sure that the value exists in the registry.
// Do the usual stuff.
// grab the size of the entry
if (dwError == ERROR_SUCCESS)
{
// alloc enough space for it
DWORD *pdwData = (DWORD *)LocalAlloc(LPTR, cbData);
if (pdwData)
{
// get the data
dwError = SHQueryValueEx(hKeyReal, szName, NULL, pType, pdwData, &cbData);
if (dwError == ERROR_SUCCESS && dwOffset < cbData / sizeof(DWORD))
{
// NOTE: offset defaults to 0 and mask defaults to 0xffffffff, so if there's only
// a mask or only an offset, we'll do the right thing
*(pdwData + dwOffset) &= ~dwMask; // clear the bits
*(pdwData + dwOffset) |= *((DWORD *)pData); // set the bits
dwError = SHSetValue(hKeyReal, NULL, szName, *pType, pdwData, cbData);
}
LocalFree(pdwData);
}
else
return ERROR_NOT_ENOUGH_MEMORY;
}
}
else
{
dwError = SHSetValue(hKeyReal, NULL, szName, *pType, pData, *pcbData);
}
break;
case REG_GET:
// grab the value that we have
if (fOffset)
{
DWORD cbData;
if (SHQueryValueEx(hKeyReal, szName, NULL, NULL, NULL, &cbData) == ERROR_SUCCESS)
{
DWORD *pdwData = (DWORD*)LocalAlloc(LPTR, cbData);
if (pdwData)
{
dwError = SHQueryValueEx(hKeyReal, szName, NULL, pType, pdwData, &cbData);
if (dwOffset < cbData / sizeof(DWORD))
*((DWORD *)pData) = *(pdwData + dwOffset);
else
*((DWORD *)pData) = 0; // Invalid offset, return something vague
*pcbData = sizeof(DWORD);
LocalFree(pdwData);
}
else
return ERROR_NOT_ENOUGH_MEMORY;
}
}
else
{
dwError = SHQueryValueEx(hKeyReal, szName, NULL, pType, pData, pcbData);
}
if ((dwError == ERROR_SUCCESS) && fMask)
{
*((DWORD *)pData) &= dwMask;
}
break;
}
RegCloseKey(hKeyReal);
}
}
if ((cmd == REG_GET) && (dwError != ERROR_SUCCESS))
{
// get the default setting
dwError = SHRegQueryUSValue(husKey, c_szDefaultValue, pType, pData, pcbData, FALSE, NULL, 0);
}
return dwError;
}
DWORD CRegTreeOptions::_RegGetSetSetting(HUSKEY husKey, DWORD *pType, LPBYTE pData, DWORD *pcbData, REG_CMD cmd)
{
UINT uiAction;
DWORD cbAction = sizeof(uiAction);
TCHAR szCLSID[80];
DWORD cbCLSID = sizeof(szCLSID);
if (cmd == REG_GETDEFAULT)
{
return SHRegQueryUSValue(husKey, c_szDefaultValue, pType, pData, pcbData, FALSE, NULL, 0);
}
else if (SHRegQueryUSValue(husKey, (cmd == REG_GET) ? c_szSPIActionGet : c_szSPIActionSet,
NULL, &uiAction, &cbAction, FALSE, NULL, 0) == ERROR_SUCCESS)
{
*pcbData = sizeof(DWORD);
*pType = REG_DWORD;
SHBoolSystemParametersInfo(uiAction, (DWORD*)pData);
return ERROR_SUCCESS;
}
else if (SHRegQueryUSValue(husKey, c_szCLSID, NULL, &szCLSID, &cbCLSID, FALSE, NULL, 0) == ERROR_SUCCESS)
{
*pcbData = sizeof(DWORD);
*pType = REG_DWORD;
CLSID clsid;
GUIDFromString(szCLSID, &clsid);
return _GetSetByCLSID(clsid, (BOOL*)pData, (cmd == REG_GET));
}
else
{
return _GetSetByRegKey(husKey, pType, pData, pcbData, cmd);
}
}
DWORD CRegTreeOptions::_GetCheckStatus(HUSKEY huskey, BOOL *pbChecked, BOOL bUseDefault)
{
DWORD dwError, cbData, dwType;
BYTE rgData[32];
DWORD cbDataCHK, dwTypeCHK;
BYTE rgDataCHK[32];
BOOL bCompCHK = TRUE;
// first, get the setting from the specified location.
cbData = sizeof(rgData);
dwError = _RegGetSetSetting(huskey, &dwType, rgData, &cbData, bUseDefault ? REG_GETDEFAULT : REG_GET);
if (dwError == ERROR_SUCCESS)
{
// second, get the value for the "checked" state and compare.
cbDataCHK = sizeof(rgDataCHK);
dwError = SHRegQueryUSValue(huskey, c_szCheckedValue, &dwTypeCHK, rgDataCHK, &cbDataCHK, FALSE, NULL, 0);
if (dwError != ERROR_SUCCESS)
{
// ok, we couldn't find the "checked" value, is it because
// it's platform dependent?
cbDataCHK = sizeof(rgDataCHK);
dwError = SHRegQueryUSValue(huskey,
g_fRunningOnNT ? c_szCheckedValueNT : c_szCheckedValueW95,
&dwTypeCHK, rgDataCHK, &cbDataCHK, FALSE, NULL, 0);
}
if (dwError == ERROR_SUCCESS)
{
// make sure two value types match.
if ((dwType != dwTypeCHK) &&
(((dwType == REG_BINARY) && (dwTypeCHK == REG_DWORD) && (cbData != 4))
|| ((dwType == REG_DWORD) && (dwTypeCHK == REG_BINARY) && (cbDataCHK != 4))))
return ERROR_BAD_FORMAT;
switch (dwType) {
case REG_DWORD:
*pbChecked = (*((DWORD*)rgData) == *((DWORD*)rgDataCHK));
break;
case REG_SZ:
if (cbData == cbDataCHK)
*pbChecked = !lstrcmp((LPTSTR)rgData, (LPTSTR)rgDataCHK);
else
*pbChecked = FALSE;
break;
case REG_BINARY:
if (cbData == cbDataCHK)
*pbChecked = !memcmp(rgData, rgDataCHK, cbData);
else
*pbChecked = FALSE;
break;
default:
return ERROR_BAD_FORMAT;
}
}
}
return dwError;
}
DWORD CRegTreeOptions::_SaveCheckStatus(HUSKEY huskey, BOOL bChecked)
{
DWORD dwError, cbData, dwType;
BYTE rgData[32];
cbData = sizeof(rgData);
dwError = SHRegQueryUSValue(huskey, bChecked ? c_szCheckedValue : c_szUncheckedValue, &dwType, rgData, &cbData, FALSE, NULL, 0);
if (dwError != ERROR_SUCCESS) // was it because of a platform specific value?
{
cbData = sizeof(rgData);
dwError = SHRegQueryUSValue(huskey, bChecked ? (g_fRunningOnNT ? c_szCheckedValueNT : c_szCheckedValueW95) : c_szUncheckedValue,
&dwType, rgData, &cbData, FALSE, NULL, 0);
}
if (dwError == ERROR_SUCCESS)
{
dwError = _RegGetSetSetting(huskey, &dwType, rgData, &cbData, REG_SET);
}
return dwError;
}
HTREEITEM Tree_AddItem(HTREEITEM hParent, LPTSTR pszText, HTREEITEM hInsAfter,
int iImage, HWND hwndTree, HUSKEY huskey, BOOL *pbExisted)
{
HTREEITEM hItem;
TV_ITEM tvI;
TV_INSERTSTRUCT tvIns;
TCHAR szText[MAX_URL_STRING];
ASSERT(pszText != NULL);
StrCpyN(szText, pszText, ARRAYSIZE(szText));
// NOTE:
// This code segment is disabled because we only enum explorer
// tree in HKCU, so there won't be any duplicates.
// Re-able this code if we start to also enum HKLM that could potentially
// result in duplicates.
// We only want to add an item if it is not already there.
// We do this to handle reading out of HKCU and HKLM.
//
TCHAR szKeyName[MAX_KEY_NAME];
tvI.mask = TVIF_HANDLE | TVIF_TEXT;
tvI.pszText = szKeyName;
tvI.cchTextMax = ARRAYSIZE(szKeyName);
for (hItem = TreeView_GetChild(hwndTree, hParent);
hItem != NULL;
hItem = TreeView_GetNextSibling(hwndTree, hItem)
)
{
tvI.hItem = hItem;
if (TreeView_GetItem(hwndTree, &tvI))
{
if (!StrCmp(tvI.pszText, szText))
{
// We found a match!
//
*pbExisted = TRUE;
return hItem;
}
}
}
// Create the item
tvI.mask = TVIF_TEXT | TVIF_IMAGE | TVIF_SELECTEDIMAGE | TVIF_PARAM;
tvI.iImage = iImage;
tvI.iSelectedImage = iImage;
tvI.pszText = szText;
tvI.cchTextMax = lstrlen(szText);
// lParam contains the HUSKEY for this item:
tvI.lParam = (LPARAM)huskey;
// Create insert item
tvIns.item = tvI;
tvIns.hInsertAfter = hInsAfter;
tvIns.hParent = hParent;
// Insert the item into the tree.
hItem = (HTREEITEM) SendMessage(hwndTree, TVM_INSERTITEM, 0,
(LPARAM)(LPTV_INSERTSTRUCT)&tvIns);
*pbExisted = FALSE;
return (hItem);
}
BOOL _IsValidKey(HKEY hkeyRoot, LPCTSTR pszSubKey, LPCTSTR pszValue)
{
TCHAR szPath[MAX_PATH];
DWORD dwType, cbSize = sizeof(szPath);
if (ERROR_SUCCESS == SHGetValue(hkeyRoot, pszSubKey, pszValue, &dwType, szPath, &cbSize))
{
// Zero in the DWORD case or NULL in the string case
// indicates that this item is not available.
if (dwType == REG_DWORD)
return *((DWORD *)szPath) != 0;
else
return szPath[0] != 0;
}
return FALSE;
}
#define REGSTR_POLICIES_EXPLORER TEXT("Software\\Microsoft\\Windows\\CurrentVersion\\Policies\\Explorer")
BOOL CRegTreeOptions::_RegIsRestricted(HUSKEY hussubkey)
{
HUSKEY huskey;
BOOL fRet = FALSE;
// Does a "Policy" Sub key exist?
if (SHRegOpenUSKey(TEXT("Policy"), KEY_READ, hussubkey, &huskey, FALSE) == ERROR_SUCCESS)
{
// Yes; Enumerate this key. The Values are Policy keys or
// Full reg paths.
DWORD cb;
TCHAR szKeyName[MAX_KEY_NAME];
for (int i=0;
cb = ARRAYSIZE(szKeyName),
ERROR_SUCCESS == SHRegEnumUSKey(huskey, i, szKeyName, &cb, SHREGENUM_HKLM)
&& !fRet; i++)
{
TCHAR szPath[MAXIMUM_SUB_KEY_LENGTH];
DWORD dwType, cbSize = sizeof(szPath);
HUSKEY huskeyTemp;
if (ERROR_SUCCESS == SHRegOpenUSKey(szKeyName, KEY_READ, huskey, &huskeyTemp, FALSE))
{
if (ERROR_SUCCESS == SHRegQueryUSValue(huskeyTemp, TEXT("RegKey"), &dwType, szPath, &cbSize, FALSE, NULL, 0))
{
if (_IsValidKey(HKEY_LOCAL_MACHINE, szPath, szKeyName))
{
fRet = TRUE;
break;
}
}
SHRegCloseUSKey(huskeyTemp);
}
// It's not a full Key, try off of policies
if (_IsValidKey(HKEY_LOCAL_MACHINE, REGSTR_POLICIES_EXPLORER, szKeyName) ||
_IsValidKey(HKEY_CURRENT_USER, REGSTR_POLICIES_EXPLORER, szKeyName))
{
fRet = TRUE;
break;
}
}
SHRegCloseUSKey(huskey);
}
return fRet;
}
void CRegTreeOptions::_RegEnumTree(HUSKEY huskey, HTREEITEM htviparent, HTREEITEM htvins)
{
TCHAR szKeyName[MAX_KEY_NAME];
DWORD cb;
BOOL bScreenReaderEnabled = IsScreenReaderEnabled();
// we must search all the sub-keys
for (int i=0; // always start with 0
cb=ARRAYSIZE(szKeyName), // string size
ERROR_SUCCESS == SHRegEnumUSKey(huskey, i, szKeyName, &cb, SHREGENUM_HKLM);
i++) // get next entry
{
HUSKEY hussubkey;
// get more info on the entry
if (ERROR_SUCCESS == SHRegOpenUSKey(szKeyName, KEY_READ, huskey, &hussubkey, FALSE))
{
HUSKEY huskeySave = NULL;
if (!_RegIsRestricted(hussubkey))
{
TCHAR szTemp[MAX_PATH];
// Get the type of items under this root
cb = ARRAYSIZE(szTemp);
if (ERROR_SUCCESS == SHRegQueryUSValue(hussubkey, c_szType, NULL, szTemp, &cb, FALSE, NULL, 0))
{
int iImage;
BOOL bChecked;
DWORD dwError = ERROR_SUCCESS;
// get the type of node
DWORD dwTreeType = RegTreeType(szTemp);
// get some more info about the this item
switch (dwTreeType)
{
case TREE_GROUP:
iImage = _DefaultIconImage(hussubkey, IDUNKNOWN);
huskeySave = hussubkey;
break;
case TREE_CHECKBOX:
dwError = _GetCheckStatus(hussubkey, &bChecked, FALSE);
if (dwError == ERROR_SUCCESS)
{
iImage = bChecked ? IDCHECKED : IDUNCHECKED;
huskeySave = hussubkey;
}
break;
case TREE_RADIO:
dwError = _GetCheckStatus(hussubkey, &bChecked, FALSE);
if (dwError == ERROR_SUCCESS)
{
iImage = bChecked ? IDRADIOON : IDRADIOOFF;
huskeySave = hussubkey;
}
break;
default:
dwError = ERROR_INVALID_PARAMETER;
}
if (dwError == ERROR_SUCCESS)
{
BOOL bItemExisted = FALSE;
LPTSTR pszText;
// try to get the plugUI enabled text
// otherwise we want the old data from a
// different value
int cch = ARRAYSIZE(szTemp);
HRESULT hr = _LoadUSRegUIString(hussubkey, c_szPlugUIText, szTemp, cch);
if (SUCCEEDED(hr) && szTemp[0] != TEXT('@'))
{
pszText = szTemp;
}
else
{
// try to get the old non-plugUI enabled text
hr = _LoadUSRegUIString(hussubkey, c_szText, szTemp, cch);
if (SUCCEEDED(hr))
{
pszText = szTemp;
}
else
{
// if all else fails, the key name itself
// is a little more useful than garbage
pszText = szKeyName;
cch = ARRAYSIZE(szKeyName);
}
}
//See if we need to add status text
if (bScreenReaderEnabled && (dwTreeType != TREE_GROUP))
{
AppendStatus(pszText, cch, bChecked);
}
// add root node
HTREEITEM htviroot = Tree_AddItem(htviparent, pszText, htvins, iImage, _hwndTree, huskeySave, &bItemExisted);
if (bItemExisted)
huskeySave = NULL;
if (dwTreeType == TREE_GROUP)
{
HUSKEY huskeySubTree;
if (ERROR_SUCCESS == SHRegOpenUSKey(szKeyName, KEY_READ, huskey, &huskeySubTree, FALSE))
{
_RegEnumTree(huskeySubTree, htviroot, TVI_FIRST);
SHRegCloseUSKey(huskeySubTree);
}
TreeView_Expand(_hwndTree, htviroot, TVE_EXPAND);
}
} // if (dwError == ERROR_SUCCESS
}
} // if (!_RegIsRestricted(hsubkey))
if (huskeySave != hussubkey)
SHRegCloseUSKey(hussubkey);
}
}
// Sort all keys under htviparent
SendMessage(_hwndTree, TVM_SORTCHILDREN, 0, (LPARAM)htviparent);
}
BOOL CRegTreeOptions::_WalkTreeRecursive(HTREEITEM htvi, WALK_TREE_CMD cmd)
{
// step through the children
HTREEITEM hctvi = TreeView_GetChild(_hwndTree, htvi);
while (hctvi)
{
_WalkTreeRecursive(hctvi, cmd);
hctvi = TreeView_GetNextSibling(_hwndTree, hctvi);
}
TV_ITEM tvi = {0};
// get ourselves
tvi.mask = TVIF_HANDLE | TVIF_IMAGE | TVIF_SELECTEDIMAGE | TVIF_PARAM;
tvi.hItem = htvi;
TreeView_GetItem(_hwndTree, &tvi);
HUSKEY huskey;
switch (cmd)
{
case WALK_TREE_DELETE:
// if we are destroying the tree...
// do we have something to clean up?
if (tvi.lParam)
{
// close the reg key
SHRegCloseUSKey((HUSKEY)tvi.lParam);
}
break;
case WALK_TREE_SAVE:
huskey = (HUSKEY)tvi.lParam;
// now save ourselves (if needed)
// what are we?
if (tvi.iImage == IDCHECKED || tvi.iImage == IDRADIOON)
{
// checkbox or radio that is checked
_SaveCheckStatus(huskey, TRUE);
}
else if (tvi.iImage == IDUNCHECKED)
{
// checkbox that is unchecked
_SaveCheckStatus(huskey, FALSE);
}
// else radio that is "off" is ignored
// else icons are ignored
break;
case WALK_TREE_RESTORE:
case WALK_TREE_REFRESH:
huskey = (HUSKEY)tvi.lParam;
if ((tvi.iImage == IDCHECKED) ||
(tvi.iImage == IDUNCHECKED) ||
(tvi.iImage == IDRADIOON) ||
(tvi.iImage == IDRADIOOFF))
{
BOOL bChecked = FALSE;
_GetCheckStatus(huskey, &bChecked, cmd == WALK_TREE_RESTORE ? TRUE : FALSE);
tvi.iImage = (tvi.iImage == IDCHECKED) || (tvi.iImage == IDUNCHECKED) ?
(bChecked ? IDCHECKED : IDUNCHECKED) :
(bChecked ? IDRADIOON : IDRADIOOFF);
tvi.iSelectedImage = tvi.iImage;
TreeView_SetItem(_hwndTree, &tvi);
}
break;
}
return TRUE; // success?
}
DWORD RegTreeType(LPCTSTR pszType)
{
for (int i = 0; i < ARRAYSIZE(c_aTreeTypes); i++)
{
if (!lstrcmpi(pszType, c_aTreeTypes[i].name))
return c_aTreeTypes[i].type;
}
return TREE_UNKNOWN;
}
BOOL AppendStatus(LPTSTR pszText,UINT cbText, BOOL fOn)
{
LPTSTR pszTemp;
UINT cbStrLen , cbStatusLen;
//if there's no string specified then return
if (!pszText)
return FALSE;
//Calculate the string lengths
cbStrLen = lstrlen(pszText);
cbStatusLen = fOn ? lstrlen(TEXT("-ON")) : lstrlen(TEXT("-OFF"));
//Remove the old status appended
pszTemp = StrRStrI(pszText,pszText + cbStrLen, TEXT("-ON"));
if(pszTemp)
{
*pszTemp = (TCHAR)0;
cbStrLen = lstrlen(pszText);
}
pszTemp = StrRStrI(pszText,pszText + cbStrLen, TEXT("-OFF"));
if(pszTemp)
{
*pszTemp = (TCHAR)0;
cbStrLen = lstrlen(pszText);
}
//check if we append status text, we'll explode or not
if (cbStrLen + cbStatusLen > cbText)
{
//We'll explode
return FALSE;
}
if (fOn)
{
StrCat(pszText, TEXT("-ON"));
}
else
{
StrCat(pszText, TEXT("-OFF"));
}
return TRUE;
}
BOOL IsScreenReaderEnabled()
{
BOOL bRet = FALSE;
SystemParametersInfoA(SPI_GETSCREENREADER, 0, &bRet, 0);
return bRet;
}
Reference in a new issue Copy permalink