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windows-nt/Source/XPSP1/NT/shell/iecontrols/framewrk/util.cpp

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//=--------------------------------------------------------------------------=
// Util.C
//=--------------------------------------------------------------------------=
// Copyright 1995-1996 Microsoft Corporation. All Rights Reserved.
//
// THIS CODE AND INFORMATION IS PROVIDED "AS IS" WITHOUT WARRANTY OF
// ANY KIND, EITHER EXPRESSED OR IMPLIED, INCLUDING BUT NOT LIMITED TO
// THE IMPLIED WARRANTIES OF MERCHANTABILITY AND/OR FITNESS FOR A
// PARTICULAR PURPOSE.
//=--------------------------------------------------------------------------=
//
// contains routines that we will find useful.
//
#include "IPServer.H"
#include "Globals.H"
#include "Util.H"
#define DECL_CRTFREE
#define DEFINE_FLOAT_STUFF
#include <crtfree.h>
// for ASSERT and FAIL
//
SZTHISFILE
//=--------------------------------------------------------------------------=
// MakeWideFromAnsi
//=--------------------------------------------------------------------------=
// given a string, make a BSTR out of it.
//
// Parameters:
// LPSTR - [in]
// BYTE - [in]
//
// Output:
// LPWSTR - needs to be cast to final desired result
//
// Notes:
//
LPWSTR MakeWideStrFromAnsi
(
LPSTR psz,
BYTE bType
)
{
LPWSTR pwsz = NULL;
int i;
// arg checking.
//
if (!psz)
return NULL;
// compute the length of the required BSTR
//
i = MultiByteToWideChar(CP_ACP, 0, psz, -1, NULL, 0);
if (i <= 0) return NULL;
// allocate the widestr
//
switch (bType) {
case STR_BSTR:
// -1 since it'll add it's own space for a NULL terminator
//
pwsz = (LPWSTR) SysAllocStringLen(NULL, i - 1);
break;
case STR_OLESTR:
pwsz = (LPWSTR) CoTaskMemAlloc(i * sizeof(WCHAR));
break;
default:
FAIL("Bogus String Type.");
}
if (!pwsz) return NULL;
MultiByteToWideChar(CP_ACP, 0, psz, -1, pwsz, i);
pwsz[i - 1] = 0;
return pwsz;
}
//=--------------------------------------------------------------------------=
// MakeWideStrFromResId
//=--------------------------------------------------------------------------=
// given a resource ID, load it, and allocate a wide string for it.
//
// Parameters:
// WORD - [in] resource id.
// BYTE - [in] type of string desired.
//
// Output:
// LPWSTR - needs to be cast to desired string type.
//
// Notes:
//
LPWSTR MakeWideStrFromResourceId
(
WORD wId,
BYTE bType
)
{
int i;
char szTmp[512];
// load the string from the resources.
//
i = LoadString(GetResourceHandle(), wId, szTmp, 512);
if (!i) return NULL;
return MakeWideStrFromAnsi(szTmp, bType);
}
//=--------------------------------------------------------------------------=
// MakeWideStrFromWide
//=--------------------------------------------------------------------------=
// given a wide string, make a new wide string with it of the given type.
//
// Parameters:
// LPWSTR - [in] current wide str.
// BYTE - [in] desired type of string.
//
// Output:
// LPWSTR
//
// Notes:
//
LPWSTR MakeWideStrFromWide
(
LPWSTR pwsz,
BYTE bType
)
{
LPWSTR pwszTmp;
int i;
if (!pwsz) return NULL;
// just copy the string, depending on what type they want.
//
switch (bType) {
case STR_OLESTR:
i = lstrlenW(pwsz);
pwszTmp = (LPWSTR)CoTaskMemAlloc((i * sizeof(WCHAR)) + sizeof(WCHAR));
if (!pwszTmp) return NULL;
memcpy(pwszTmp, pwsz, (sizeof(WCHAR) * i) + sizeof(WCHAR));
break;
case STR_BSTR:
pwszTmp = (LPWSTR)SysAllocString(pwsz);
break;
}
return pwszTmp;
}
//=--------------------------------------------------------------------------=
// StringFromGuidA
//=--------------------------------------------------------------------------=
// returns an ANSI string from a CLSID or GUID
//
// Parameters:
// REFIID - [in] clsid to make string out of.
// LPSTR - [in] buffer in which to place resultant GUID.
//
// Output:
// int - number of chars written out.
//
// Notes:
//
int StringFromGuidA
(
REFIID riid,
LPSTR pszBuf
)
{
return wsprintf((char *)pszBuf, "{%08lX-%04X-%04X-%02X%02X-%02X%02X%02X%02X%02X%02X}", riid.Data1,
riid.Data2, riid.Data3, riid.Data4[0], riid.Data4[1], riid.Data4[2],
riid.Data4[3], riid.Data4[4], riid.Data4[5], riid.Data4[6], riid.Data4[7]);
}
//=--------------------------------------------------------------------------=
// RegisterUnknownObject
//=--------------------------------------------------------------------------=
// registers a simple CoCreatable object. nothing terribly serious.
// we add the following information to the registry:
//
// HKEY_CLASSES_ROOT\CLSID\<CLSID> = <ObjectName> Object
// HKEY_CLASSES_ROOT\CLSID\<CLSID>\InprocServer32 = <path to local server>
//
// Parameters:
// LPCSTR - [in] Object Name
// REFCLSID - [in] CLSID of the object
//
// Output:
// BOOL - FALSE means couldn't register it all
//
// Notes:
//
BOOL RegisterUnknownObject
(
LPCSTR pszObjectName,
REFCLSID riidObject
)
{
HKEY hk = NULL, hkSub = NULL;
char szGuidStr[GUID_STR_LEN];
DWORD dwPathLen, dwDummy;
char szScratch[MAX_PATH];
long l;
// clean out any garbage
//
UnregisterUnknownObject(riidObject);
// HKEY_CLASSES_ROOT\CLSID\<CLSID> = <ObjectName> Object
// HKEY_CLASSES_ROOT\CLSID\<CLSID>\InprocServer32 = <path to local server>
// HKEY_CLASSES_ROOT\CLSID\<CLSID>\InprocServer32 @ThreadingModel = Apartment
//
if (!StringFromGuidA(riidObject, szGuidStr)) goto CleanUp;
wsprintf(szScratch, "CLSID\\%s", szGuidStr);
l = RegCreateKeyEx(HKEY_CLASSES_ROOT, szScratch, 0, "", REG_OPTION_NON_VOLATILE,
KEY_READ | KEY_WRITE, NULL, &hk, &dwDummy);
CLEANUP_ON_ERROR(l);
wsprintf(szScratch, "%s Object", pszObjectName);
l = RegSetValueEx(hk, NULL, 0, REG_SZ, (BYTE *)szScratch, lstrlen(szScratch) + 1);
CLEANUP_ON_ERROR(l);
l = RegCreateKeyEx(hk, "InprocServer32", 0, "", REG_OPTION_NON_VOLATILE,
KEY_READ | KEY_WRITE, NULL, &hkSub, &dwDummy);
CLEANUP_ON_ERROR(l);
dwPathLen = GetModuleFileName(g_hInstance, szScratch, sizeof(szScratch));
if (!dwPathLen) goto CleanUp;
l = RegSetValueEx(hkSub, NULL, 0, REG_SZ, (BYTE *)szScratch, dwPathLen + 1);
CLEANUP_ON_ERROR(l);
l = RegSetValueEx(hkSub, "ThreadingModel", 0, REG_SZ, (BYTE *)"Apartment", sizeof("Apartment"));
CLEANUP_ON_ERROR(l);
RegCloseKey(hkSub);
RegCloseKey(hk);
return TRUE;
// we are not very happy!
//
CleanUp:
if (hk) RegCloseKey(hk);
if (hkSub) RegCloseKey(hkSub);
return FALSE;
}
//=--------------------------------------------------------------------------=
// RegisterAutomationObject
//=--------------------------------------------------------------------------=
// given a little bit of information about an automation object, go and put it
// in the registry.
// we add the following information in addition to that set up in
// RegisterUnknownObject:
//
//
// HKEY_CLASSES_ROOT\<LibraryName>.<ObjectName> = <ObjectName> Object
// HKEY_CLASSES_ROOT\<LibraryName>.<ObjectName>\CLSID = <CLSID>
// HKEY_CLASSES_ROOT\<LibraryName>.<ObjectName>\CurVer = <ObjectName>.Object.<VersionNumber>
//
// HKEY_CLASSES_ROOT\<LibraryName>.<ObjectName>.<VersionNumber> = <ObjectName> Object
// HKEY_CLASSES_ROOT\<LibraryName>.<ObjectName>.<VersionNumber>\CLSID = <CLSID>
//
// HKEY_CLASSES_ROOT\CLSID\<CLSID>\TypeLib = <LibidOfTypeLibrary>
// HKEY_CLASSES_ROOT\CLSID\<CLSID>\ProgID = <LibraryName>.<ObjectName>.<VersionNumber>
// HKEY_CLASSES_ROOT\CLSID\<CLSID>\VersionIndependentProgID = <LibraryName>.<ObjectName>
//
// Parameters:
// LPCSTR - [in] Library Name
// LPCSTR - [in] Object Name
// long - [in] Version Number
// REFCLSID - [in] LIBID of type library
// REFCLSID - [in] CLSID of the object
//
// Output:
// BOOL - FALSE means not all of it was registered
//
// Notes:
//
BOOL RegisterAutomationObject
(
LPCSTR pszLibName,
LPCSTR pszObjectName,
long lVersion,
REFCLSID riidLibrary,
REFCLSID riidObject
)
{
HKEY hk = NULL, hkSub = NULL;
char szGuidStr[GUID_STR_LEN];
char szScratch[MAX_PATH];
long l;
DWORD dwDummy;
// first register the simple Unknown stuff.
//
if (!RegisterUnknownObject(pszObjectName, riidObject)) return FALSE;
// HKEY_CLASSES_ROOT\<LibraryName>.<ObjectName> = <ObjectName> Object
// HKEY_CLASSES_ROOT\<LibraryName>.<ObjectName>\CLSID = <CLSID>
// HKEY_CLASSES_ROOT\<LibraryName>.<ObjectName>\CurVer = <ObjectName>.Object.<VersionNumber>
//
lstrcpy(szScratch, pszLibName);
lstrcat(szScratch, ".");
lstrcat(szScratch, pszObjectName);
l = RegCreateKeyEx(HKEY_CLASSES_ROOT, szScratch, 0L, "",
REG_OPTION_NON_VOLATILE, KEY_READ | KEY_WRITE,
NULL, &hk, &dwDummy);
CLEANUP_ON_ERROR(l);
wsprintf(szScratch, "%s Object", pszObjectName);
l = RegSetValueEx(hk, NULL, 0L, REG_SZ, (BYTE *)szScratch, lstrlen(szScratch)+1);
CLEANUP_ON_ERROR(l);
l = RegCreateKeyEx(hk, "CLSID", 0L, "", REG_OPTION_NON_VOLATILE,
KEY_READ | KEY_WRITE, NULL, &hkSub, &dwDummy);
CLEANUP_ON_ERROR(l);
if (!StringFromGuidA(riidObject, szGuidStr))
goto CleanUp;
l = RegSetValueEx(hkSub, NULL, 0L, REG_SZ, (BYTE *)szGuidStr, lstrlen(szGuidStr) + 1);
CLEANUP_ON_ERROR(l);
RegCloseKey(hkSub);
l = RegCreateKeyEx(hk, "CurVer", 0, "", REG_OPTION_NON_VOLATILE,
KEY_READ | KEY_WRITE, NULL, &hkSub, &dwDummy);
CLEANUP_ON_ERROR(l);
wsprintf(szScratch, "%s.%s.%ld", pszLibName, pszObjectName, lVersion);
l = RegSetValueEx(hkSub, NULL, 0, REG_SZ, (BYTE *)szScratch, lstrlen(szScratch) + 1);
CLEANUP_ON_ERROR(l);
RegCloseKey(hkSub);
RegCloseKey(hk);
// HKEY_CLASSES_ROOT\<LibraryName>.<ObjectName>.<VersionNumber> = <ObjectName> Object
// HKEY_CLASSES_ROOT\<LibraryName>.<ObjectName>.<VersionNumber>\CLSID = <CLSID>
//
l = RegCreateKeyEx(HKEY_CLASSES_ROOT, szScratch, 0, "", REG_OPTION_NON_VOLATILE,
KEY_READ | KEY_WRITE, NULL, &hk, &dwDummy);
CLEANUP_ON_ERROR(l);
wsprintf(szScratch, "%s Object", pszObjectName);
l = RegSetValueEx(hk, NULL, 0, REG_SZ, (BYTE *)szScratch, lstrlen(szScratch) + 1);
CLEANUP_ON_ERROR(l);
l = RegCreateKeyEx(hk, "CLSID", 0, "", REG_OPTION_NON_VOLATILE,
KEY_READ | KEY_WRITE, NULL, &hkSub, &dwDummy);
CLEANUP_ON_ERROR(l);
l = RegSetValueEx(hkSub, NULL, 0, REG_SZ, (BYTE *)szGuidStr, lstrlen(szGuidStr) + 1);
CLEANUP_ON_ERROR(l);
RegCloseKey(hkSub);
RegCloseKey(hk);
// HKEY_CLASSES_ROOT\CLSID\<CLSID>\ProgID = <LibraryName>.<ObjectName>.<VersionNumber>
// HKEY_CLASSES_ROOT\CLSID\<CLSID>\VersionIndependentProgID = <LibraryName>.<ObjectName>
// HKEY_CLASSES_ROOT\CLSID\<CLSID>\TypeLib = <LibidOfTypeLibrary>
//
if (!StringFromGuidA(riidObject, szGuidStr)) goto CleanUp;
wsprintf(szScratch, "CLSID\\%s", szGuidStr);
l = RegCreateKeyEx(HKEY_CLASSES_ROOT, szScratch, 0, "", REG_OPTION_NON_VOLATILE,
KEY_READ|KEY_WRITE, NULL, &hk, &dwDummy);
CLEANUP_ON_ERROR(l);
l = RegCreateKeyEx(hk, "VersionIndependentProgID", 0, "", REG_OPTION_NON_VOLATILE,
KEY_READ | KEY_WRITE, NULL, &hkSub, &dwDummy);
CLEANUP_ON_ERROR(l);
wsprintf(szScratch, "%s.%s", pszLibName, pszObjectName);
l = RegSetValueEx(hkSub, NULL, 0, REG_SZ, (BYTE *)szScratch, lstrlen(szScratch) + 1);
CLEANUP_ON_ERROR(l);
RegCloseKey(hkSub);
l = RegCreateKeyEx(hk, "ProgID", 0, "", REG_OPTION_NON_VOLATILE,
KEY_READ | KEY_WRITE, NULL, &hkSub, &dwDummy);
CLEANUP_ON_ERROR(l);
wsprintf(szScratch, "%s.%s.%ld", pszLibName, pszObjectName, lVersion);
l = RegSetValueEx(hkSub, NULL, 0, REG_SZ, (BYTE *)szScratch, lstrlen(szScratch) + 1);
CLEANUP_ON_ERROR(l);
RegCloseKey(hkSub);
l = RegCreateKeyEx(hk, "TypeLib", 0, "", REG_OPTION_NON_VOLATILE, KEY_READ | KEY_WRITE,
NULL, &hkSub, &dwDummy);
if (!StringFromGuidA(riidLibrary, szGuidStr)) goto CleanUp;
l = RegSetValueEx(hkSub, NULL, 0, REG_SZ, (BYTE *)szGuidStr, lstrlen(szGuidStr) + 1);
CLEANUP_ON_ERROR(l);
RegCloseKey(hkSub);
RegCloseKey(hk);
return TRUE;
CleanUp:
if (hk) RegCloseKey(hkSub);
if (hk) RegCloseKey(hk);
return FALSE;
}
//=--------------------------------------------------------------------------=
// RegisterControlObject.
//=--------------------------------------------------------------------------=
// in addition to writing out automation object information, this function
// writes out some values specific to a control.
//
// What we add here:
//
// HKEY_CLASSES_ROOT\CLSID\<CLSID>\Control
// HKEY_CLASSES_ROOT\CLSID\<CLSID>\MiscStatus\1 = <MISCSTATUSBITS>
// HKEY_CLASSES_ROOT\CLSID\<CLSID>\ToolboxBitmap32 = <PATH TO BMP>
// HKEY_CLASSES_ROOT\CLSID\<CLSID>\Version = <VERSION>
//
// Parameters:
// LPCSTR - [in] Library Name
// LPCSTR - [in] Object Name
// long - [in] Version Number
// REFCLSID - [in] LIBID of type library
// REFCLSID - [in] CLSID of the object
// DWORD - [in] misc status flags for ctl
// WORD - [in] toolbox id for control
//
// Output:
// BOOL
//
// Notes:
// - not the most terribly efficient routine.
//
BOOL RegisterControlObject
(
LPCSTR pszLibName,
LPCSTR pszObjectName,
long lVersion,
REFCLSID riidLibrary,
REFCLSID riidObject,
DWORD dwMiscStatus,
WORD wToolboxBitmapId
)
{
HKEY hk, hkSub = NULL, hkSub2 = NULL;
char szTmp[MAX_PATH];
char szGuidStr[GUID_STR_LEN];
DWORD dwDummy;
LONG l;
// first register all the automation information for this.
//
if (!RegisterAutomationObject(pszLibName, pszObjectName, lVersion, riidLibrary, riidObject)) return FALSE;
// then go and register the control specific stuff.
//
StringFromGuidA(riidObject, szGuidStr);
wsprintf(szTmp, "CLSID\\%s", szGuidStr);
l = RegOpenKeyEx(HKEY_CLASSES_ROOT, szTmp, 0, KEY_ALL_ACCESS, &hk);
if (l != ERROR_SUCCESS) return FALSE;
// create the control flag.
//
l = RegCreateKeyEx(hk, "Control", 0, "", REG_OPTION_NON_VOLATILE, KEY_ALL_ACCESS, NULL, &hkSub, &dwDummy);
CLEANUP_ON_ERROR(l);
// now set up the MiscStatus Bits...
//
RegCloseKey(hkSub);
hkSub = NULL;
l = RegCreateKeyEx(hk, "MiscStatus", 0, "", REG_OPTION_NON_VOLATILE, KEY_ALL_ACCESS, NULL, &hkSub, &dwDummy);
CLEANUP_ON_ERROR(l);
szTmp[0] = '0';
szTmp[1] = '\0';
l = RegSetValueEx(hkSub, NULL, 0, REG_SZ, (BYTE *)szTmp, 2);
CLEANUP_ON_ERROR(l);
l = RegCreateKeyEx(hkSub, "1", 0, "", REG_OPTION_NON_VOLATILE, KEY_ALL_ACCESS, NULL, &hkSub2, &dwDummy);
CLEANUP_ON_ERROR(l);
wsprintf(szTmp, "%d", dwMiscStatus);
l = RegSetValueEx(hkSub2, NULL, 0, REG_SZ, (BYTE *)szTmp, lstrlen(szTmp) + 1);
RegCloseKey(hkSub2);
CLEANUP_ON_ERROR(l);
RegCloseKey(hkSub);
// now set up the toolbox bitmap
//
GetModuleFileName(g_hInstance, szTmp, MAX_PATH);
wsprintf(szGuidStr, ", %d", wToolboxBitmapId);
lstrcat(szTmp, szGuidStr);
l = RegCreateKeyEx(hk, "ToolboxBitmap32", 0, "", REG_OPTION_NON_VOLATILE, KEY_ALL_ACCESS, NULL, &hkSub, &dwDummy);
CLEANUP_ON_ERROR(l);
l = RegSetValueEx(hkSub, NULL, 0, REG_SZ, (BYTE *)szTmp, lstrlen(szTmp) + 1);
CLEANUP_ON_ERROR(l);
// now set up the version information
//
RegCloseKey(hkSub);
l = RegCreateKeyEx(hk, "Version", 0, "", REG_OPTION_NON_VOLATILE, KEY_ALL_ACCESS, NULL, &hkSub, &dwDummy);
CLEANUP_ON_ERROR(l);
wsprintf(szTmp, "%ld.0", lVersion);
l = RegSetValueEx(hkSub, NULL, 0, REG_SZ, (BYTE *)szTmp, lstrlen(szTmp) + 1);
CleanUp:
if (hk)
RegCloseKey(hk);
if (hkSub)
RegCloseKey(hkSub);
return (l == ERROR_SUCCESS) ? TRUE : FALSE;
}
//=--------------------------------------------------------------------------=
// UnregisterUnknownObject
//=--------------------------------------------------------------------------=
// cleans up all the stuff that RegisterUnknownObject puts in the
// registry.
//
// Parameters:
// REFCLSID - [in] CLSID of the object
//
// Output:
// BOOL - FALSE means not all of it was registered
//
// Notes:
// - WARNING: this routine will blow away all other keys under the CLSID
// for this object. mildly anti-social, but likely not a problem.
//
BOOL UnregisterUnknownObject
(
REFCLSID riidObject
)
{
char szScratch[MAX_PATH];
HKEY hk;
BOOL f;
long l;
// delete everybody of the form
// HKEY_CLASSES_ROOT\CLSID\<CLSID> [\] *
//
if (!StringFromGuidA(riidObject, szScratch))
return FALSE;
l = RegOpenKeyEx(HKEY_CLASSES_ROOT, "CLSID", 0, KEY_ALL_ACCESS, &hk);
if (l != ERROR_SUCCESS) return FALSE;
f = DeleteKeyAndSubKeys(hk, szScratch);
RegCloseKey(hk);
return f;
}
//=--------------------------------------------------------------------------=
// UnregisterAutomationObject
//=--------------------------------------------------------------------------=
// unregisters an automation object, including all of it's unknown object
// information.
//
// Parameters:
// LPCSTR - [in] Library Name
// LPCSTR - [in] Object Name
// long - [in] Version Number
// REFCLSID - [in] CLSID of the object
//
// Output:
// BOOL - FALSE means couldn't get it all unregistered.
//
// Notes:
//
BOOL UnregisterAutomationObject
(
LPCSTR pszLibName,
LPCSTR pszObjectName,
long lVersion,
REFCLSID riidObject
)
{
char szScratch[MAX_PATH];
BOOL f;
// first thing -- unregister Unknown information
//
f = UnregisterUnknownObject(riidObject);
if (!f) return FALSE;
// delete everybody of the form:
// HKEY_CLASSES_ROOT\<LibraryName>.<ObjectName> [\] *
//
wsprintf(szScratch, "%s.%s", pszLibName, pszObjectName);
f = DeleteKeyAndSubKeys(HKEY_CLASSES_ROOT, szScratch);
if (!f) return FALSE;
// delete everybody of the form
// HKEY_CLASSES_ROOT\<LibraryName>.<ObjectName>.<VersionNumber> [\] *
//
wsprintf(szScratch, "%s.%s.%ld", pszLibName, pszObjectName, lVersion);
f = DeleteKeyAndSubKeys(HKEY_CLASSES_ROOT, szScratch);
if (!f) return FALSE;
return TRUE;
}
//=--------------------------------------------------------------------------=
// UnregisterTypeLibrary
//=--------------------------------------------------------------------------=
// blows away the type library keys for a given libid.
//
// Parameters:
// REFCLSID - [in] libid to blow away.
//
// Output:
// BOOL - TRUE OK, FALSE bad.
//
// Notes:
// - WARNING: this function just blows away the entire type library section,
// including all localized versions of the type library. mildly anti-
// social, but not killer.
//
BOOL UnregisterTypeLibrary
(
REFCLSID riidLibrary
)
{
HKEY hk;
char szScratch[GUID_STR_LEN];
long l;
BOOL f;
// convert the libid into a string.
//
if (!StringFromGuidA(riidLibrary, szScratch))
return FALSE;
l = RegOpenKeyEx(HKEY_CLASSES_ROOT, "TypeLib", 0, KEY_ALL_ACCESS, &hk);
if (l != ERROR_SUCCESS) return FALSE;
f = DeleteKeyAndSubKeys(hk, szScratch);
RegCloseKey(hk);
return f;
}
//=--------------------------------------------------------------------------=
// DeleteKeyAndSubKeys
//=--------------------------------------------------------------------------=
// delete's a key and all of it's subkeys.
//
// Parameters:
// HKEY - [in] delete the descendant specified
// LPSTR - [in] i'm the descendant specified
//
// Output:
// BOOL - TRUE OK, FALSE baaaad.
//
// Notes:
// - I don't feel too bad about implementing this recursively, since the
// depth isn't likely to get all the great.
// - Despite the win32 docs claiming it does, RegDeleteKey doesn't seem to
// work with sub-keys under windows 95.
//
// - REWRITTEN: To actually work as expected (07/30/97 -- jaym)
BOOL DeleteKeyAndSubKeys
(
HKEY hkIn,
LPSTR pszSubKey
)
{
DWORD dwRet;
HKEY hkSubKey;
// Open the subkey so we can enumerate any children
dwRet = RegOpenKeyEx(hkIn, pszSubKey, 0, KEY_ALL_ACCESS, &hkSubKey);
if (dwRet == ERROR_SUCCESS)
{
DWORD dwIndex;
CHAR szSubKeyName[MAX_PATH + 1];
DWORD cchSubKeyName = sizeof(szSubKeyName);
CHAR szClass[MAX_PATH];
DWORD cbClass = sizeof(szClass);
// I can't just call RegEnumKey with an ever-increasing index, because
// I'm deleting the subkeys as I go, which alters the indices of the
// remaining subkeys in an implementation-dependent way. In order to
// be safe, I have to count backwards while deleting the subkeys.
// Find out how many subkeys there are
dwRet = RegQueryInfoKey(hkSubKey,
szClass,
&cbClass,
NULL,
&dwIndex, // The # of subkeys -- all we need
NULL,
NULL,
NULL,
NULL,
NULL,
NULL,
NULL);
if (dwRet == NO_ERROR)
{
// dwIndex is now the count of subkeys, but it needs to be
// zero-based for RegEnumKey, so I'll pre-decrement, rather
// than post-decrement.
while (RegEnumKey( hkSubKey,
--dwIndex,
szSubKeyName,
cchSubKeyName) == ERROR_SUCCESS)
{
DeleteKeyAndSubKeys(hkSubKey, szSubKeyName);
}
}
RegCloseKey(hkSubKey);
dwRet = RegDeleteKey(hkIn, pszSubKey);
}
return (dwRet == ERROR_SUCCESS);
}
//=--------------------------------------------------------------------------=
// Conversion Routines
//=--------------------------------------------------------------------------=
// the following stuff is stuff used for the various conversion routines.
//
#define HIMETRIC_PER_INCH 2540
#define MAP_PIX_TO_LOGHIM(x,ppli) ( (HIMETRIC_PER_INCH*(x) + ((ppli)>>1)) / (ppli) )
#define MAP_LOGHIM_TO_PIX(x,ppli) ( ((ppli)*(x) + HIMETRIC_PER_INCH/2) / HIMETRIC_PER_INCH )
static int s_iXppli; // Pixels per logical inch along width
static int s_iYppli; // Pixels per logical inch along height
static BYTE s_fGotScreenMetrics; // Are above valid?
//=--------------------------------------------------------------------------=
// GetScreenMetrics
//=--------------------------------------------------------------------------=
// private function we call to set up various metrics the conversion routines
// will use.
//
// Notes:
//
static void GetScreenMetrics
(
void
)
{
HDC hDCScreen;
// we have to critical section this in case two threads are converting
// things at the same time
//
EnterCriticalSection(&g_CriticalSection);
if (s_fGotScreenMetrics)
goto Done;
// we want the metrics for the screen
//
hDCScreen = GetDC(NULL);
ASSERT(hDCScreen, "couldn't get a DC for the screen.");
s_iXppli = GetDeviceCaps(hDCScreen, LOGPIXELSX);
s_iYppli = GetDeviceCaps(hDCScreen, LOGPIXELSY);
ReleaseDC(NULL, hDCScreen);
s_fGotScreenMetrics = TRUE;
// we're done with our critical seciton. clean it up
//
Done:
LeaveCriticalSection(&g_CriticalSection);
}
//=--------------------------------------------------------------------------=
// HiMetricToPixel
//=--------------------------------------------------------------------------=
// converts from himetric to Pixels.
//
// Parameters:
// const SIZEL * - [in] dudes in himetric
// SIZEL * - [out] size in pixels.
//
// Notes:
//
void HiMetricToPixel(const SIZEL * lpSizeInHiMetric, LPSIZEL lpSizeInPix)
{
GetScreenMetrics();
// We got logical HIMETRIC along the display, convert them to pixel units
//
lpSizeInPix->cx = MAP_LOGHIM_TO_PIX(lpSizeInHiMetric->cx, s_iXppli);
lpSizeInPix->cy = MAP_LOGHIM_TO_PIX(lpSizeInHiMetric->cy, s_iYppli);
}
//=--------------------------------------------------------------------------=
// PixelToHiMetric
//=--------------------------------------------------------------------------=
// converts from pixels to himetric.
//
// Parameters:
// const SIZEL * - [in] size in pixels
// SIZEL * - [out] size in himetric
//
// Notes:
//
void PixelToHiMetric(const SIZEL * lpSizeInPix, LPSIZEL lpSizeInHiMetric)
{
GetScreenMetrics();
// We got pixel units, convert them to logical HIMETRIC along the display
//
lpSizeInHiMetric->cx = MAP_PIX_TO_LOGHIM(lpSizeInPix->cx, s_iXppli);
lpSizeInHiMetric->cy = MAP_PIX_TO_LOGHIM(lpSizeInPix->cy, s_iYppli);
}
//=--------------------------------------------------------------------------=
// _MakePath
//=--------------------------------------------------------------------------=
// little helper routine for RegisterLocalizedTypeLibs and GetResourceHandle.
// not terrilby efficient or smart, but it's registration code, so we don't
// really care.
//
// Notes:
//
void _MakePath
(
LPSTR pszFull,
const char * pszName,
LPSTR pszOut
)
{
LPSTR psz;
LPSTR pszLast;
lstrcpy(pszOut, pszFull);
psz = pszLast = pszOut;
while (*psz) {
if (*psz == '\\')
pszLast = AnsiNext(psz);
psz = AnsiNext(psz);
}
// got the last \ character, so just go and replace the name.
//
lstrcpy(pszLast, pszName);
}
// from Globals.C
//
extern HINSTANCE g_hInstResources;
//=--------------------------------------------------------------------------=
// GetResourceHandle
//=--------------------------------------------------------------------------=
// returns the resource handle. we use the host's ambient Locale ID to
// determine, from a table in the DLL, which satellite DLL to load for
// localized resources.
//
// Output:
// HINSTANCE
//
// Notes:
//
HINSTANCE GetResourceHandle
(
void
)
{
int i;
char szExtension[5], szTmp[MAX_PATH];
char szDllName[MAX_PATH], szFinalName[MAX_PATH];
// crit sect this so that we don't mess anything up.
//
EnterCriticalSection(&g_CriticalSection);
// don't do anything if we don't have to
//
if (g_hInstResources || !g_fSatelliteLocalization)
goto CleanUp;
// we're going to call GetLocaleInfo to get the abbreviated name for the
// LCID we've got.
//
i = GetLocaleInfo(g_lcidLocale, LOCALE_SABBREVLANGNAME, szExtension, sizeof(szExtension));
if (!i) goto CleanUp;
// we've got the language extension. go and load the DLL name from the
// resources and then tack on the extension.
// please note that all inproc sers -must- have the string resource 1001
// defined to the base name of the server if they wish to support satellite
// localization.
//
i = LoadString(g_hInstance, 1001, szTmp, sizeof(szTmp));
ASSERT(i, "This server doesn't have IDS_SERVERBASENAME defined in their resources!");
if (!i) goto CleanUp;
// got the basename and the extention. go and combine them, and then add
// on the .DLL for them.
//
wsprintf(szDllName, "%s%s.DLL", szTmp, szExtension);
// try to load in the DLL
//
GetModuleFileName(g_hInstance, szTmp, MAX_PATH);
_MakePath(szTmp, szDllName, szFinalName);
g_hInstResources = LoadLibrary(szFinalName);
// if we couldn't find it with the entire LCID, try it with just the primary
// langid
//
if (!g_hInstResources) {
LPSTR psz;
LCID lcid;
lcid = MAKELCID(MAKELANGID(PRIMARYLANGID(LANGIDFROMLCID(g_lcidLocale)), SUBLANG_DEFAULT), SORT_DEFAULT);
i = GetLocaleInfo(lcid, LOCALE_SABBREVLANGNAME, szExtension, sizeof(szExtension));
if (!i) goto CleanUp;
// reconstruct the DLL name. the -7 is the length of XXX.DLL. mildly
// hacky, but it should be fine. there are no DBCS lang identifiers.
// finally, retry the load
//
psz = szFinalName + lstrlen(szFinalName);
memcpy((LPBYTE)psz - 7, szExtension, 3);
g_hInstResources = LoadLibrary(szFinalName);
}
CleanUp:
// if we couldn't load the DLL for some reason, then just return the
// current resource handle, which is good enough.
//
if (!g_hInstResources) g_hInstResources = g_hInstance;
LeaveCriticalSection(&g_CriticalSection);
return g_hInstResources;
}
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