X-Git-Url: https://git.saurik.com/wxWidgets.git/blobdiff_plain/1311c7a9bbaefda6b68eee5c32c3309f163a8861..84efdbf195e14d0104a3c79040afffe29c167af0:/src/msw/registry.cpp diff --git a/src/msw/registry.cpp b/src/msw/registry.cpp index 713ca417c3..60296ca5ea 100644 --- a/src/msw/registry.cpp +++ b/src/msw/registry.cpp @@ -12,6 +12,10 @@ // - add high level functions (RegisterOleServer, ...) /////////////////////////////////////////////////////////////////////////////// +#ifdef __GNUG__ +#pragma implementation "registry.h" +#endif + // ============================================================================ // declarations // ============================================================================ @@ -32,9 +36,14 @@ #include "wx/intl.h" #include "wx/log.h" +#include "wx/config.h" // for wxExpandEnvVars + // Windows headers +/* #define STRICT #define WIN32_LEAN_AND_MEAN +*/ + #include // other std headers @@ -83,6 +92,10 @@ aStdKeys[] = // the registry name separator (perhaps one day MS will change it to '/' ;-) #define REG_SEPARATOR '\\' +// useful for Windows programmers: makes somewhat more clear all these zeroes +// being passed to Windows APIs +#define RESERVED (NULL) + // ---------------------------------------------------------------------------- // macros // ---------------------------------------------------------------------------- @@ -100,8 +113,8 @@ aStdKeys[] = // removes the trailing backslash from the string if it has one static inline void RemoveTrailingSeparator(wxString& str); -// returns true if given registry key exists -static bool KeyExists(HKEY hRootKey, const char *szKey); +// returns TRUE if given registry key exists +static bool KeyExists(WXHKEY hRootKey, const char *szKey); // combines value and key name (uses static buffer!) static const char *GetFullName(const wxRegKey *pKey, @@ -119,7 +132,7 @@ const size_t wxRegKey::nStdKeys = WXSIZEOF(aStdKeys); // @@ should take a `StdKey key', but as it's often going to be used in loops // it would require casts in user code. -const char *wxRegKey::GetStdKeyName(uint key) +const char *wxRegKey::GetStdKeyName(size_t key) { // return empty string if key is invalid wxCHECK_MSG( key < nStdKeys, "", "invalid key in wxRegKey::GetStdKeyName" ); @@ -127,7 +140,7 @@ const char *wxRegKey::GetStdKeyName(uint key) return aStdKeys[key].szName; } -const char *wxRegKey::GetStdKeyShortName(uint key) +const char *wxRegKey::GetStdKeyShortName(size_t key) { // return empty string if key is invalid wxCHECK( key < nStdKeys, "" ); @@ -140,7 +153,7 @@ wxRegKey::StdKey wxRegKey::ExtractKeyName(wxString& strKey) wxString strRoot = strKey.Left(REG_SEPARATOR); HKEY hRootKey; - uint ui; + size_t ui; for ( ui = 0; ui < nStdKeys; ui++ ) { if ( strRoot.CmpNoCase(aStdKeys[ui].szName) == 0 || strRoot.CmpNoCase(aStdKeys[ui].szShortName) == 0 ) { @@ -163,10 +176,10 @@ wxRegKey::StdKey wxRegKey::ExtractKeyName(wxString& strKey) return (wxRegKey::StdKey)(int)hRootKey; } -wxRegKey::StdKey wxRegKey::GetStdKeyFromHkey(HKEY hkey) +wxRegKey::StdKey wxRegKey::GetStdKeyFromHkey(WXHKEY hkey) { - for ( uint ui = 0; ui < nStdKeys; ui++ ) { - if ( aStdKeys[ui].hkey == hkey ) + for ( size_t ui = 0; ui < nStdKeys; ui++ ) { + if ( (int) aStdKeys[ui].hkey == (int) hkey ) return (StdKey)ui; } @@ -182,13 +195,13 @@ wxRegKey::StdKey wxRegKey::GetStdKeyFromHkey(HKEY hkey) wxRegKey::wxRegKey() { m_hKey = 0; - m_hRootKey = aStdKeys[HKCR].hkey; + m_hRootKey = (WXHKEY) aStdKeys[HKCR].hkey; m_dwLastError = 0; } wxRegKey::wxRegKey(const wxString& strKey) : m_strKey(strKey) { - m_hRootKey = aStdKeys[ExtractKeyName(m_strKey)].hkey; + m_hRootKey = (WXHKEY) aStdKeys[ExtractKeyName(m_strKey)].hkey; m_hKey = NULL; m_dwLastError = 0; } @@ -197,7 +210,7 @@ wxRegKey::wxRegKey(const wxString& strKey) : m_strKey(strKey) wxRegKey::wxRegKey(StdKey keyParent, const wxString& strKey) : m_strKey(strKey) { RemoveTrailingSeparator(m_strKey); - m_hRootKey = aStdKeys[keyParent].hkey; + m_hRootKey = (WXHKEY) aStdKeys[keyParent].hkey; m_hKey = NULL; m_dwLastError = 0; } @@ -207,8 +220,10 @@ wxRegKey::wxRegKey(const wxRegKey& keyParent, const wxString& strKey) : m_strKey(keyParent.m_strKey) { // combine our name with parent's to get the full name - if ( !strKey.IsEmpty() && strKey[0] != REG_SEPARATOR ) - m_strKey += REG_SEPARATOR; + if ( !m_strKey.IsEmpty() && + (strKey.IsEmpty() || strKey[0] != REG_SEPARATOR) ) { + m_strKey += REG_SEPARATOR; + } m_strKey += strKey; RemoveTrailingSeparator(m_strKey); @@ -234,7 +249,7 @@ void wxRegKey::SetName(const wxString& strKey) Close(); m_strKey = strKey; - m_hRootKey = aStdKeys[ExtractKeyName(m_strKey)].hkey; + m_hRootKey = (WXHKEY) aStdKeys[ExtractKeyName(m_strKey)].hkey; } // the name is relative to the parent key @@ -244,7 +259,7 @@ void wxRegKey::SetName(StdKey keyParent, const wxString& strKey) m_strKey = strKey; RemoveTrailingSeparator(m_strKey); - m_hRootKey = aStdKeys[keyParent].hkey; + m_hRootKey = (WXHKEY) aStdKeys[keyParent].hkey; } // the name is relative to the parent key @@ -253,9 +268,10 @@ void wxRegKey::SetName(const wxRegKey& keyParent, const wxString& strKey) Close(); // combine our name with parent's to get the full name - m_strKey = strKey; + m_strKey = keyParent.m_strKey; if ( !strKey.IsEmpty() && strKey[0] != REG_SEPARATOR ) m_strKey += REG_SEPARATOR; + m_strKey += strKey; RemoveTrailingSeparator(m_strKey); @@ -263,7 +279,7 @@ void wxRegKey::SetName(const wxRegKey& keyParent, const wxString& strKey) } // hKey should be opened and will be closed in wxRegKey dtor -void wxRegKey::SetHkey(HKEY hKey) +void wxRegKey::SetHkey(WXHKEY hKey) { Close(); @@ -274,17 +290,17 @@ void wxRegKey::SetHkey(HKEY hKey) // info about the key // ---------------------------------------------------------------------------- -// returns true if the key exists +// returns TRUE if the key exists bool wxRegKey::Exists() const { // opened key has to exist, try to open it if not done yet - return IsOpened() ? true : KeyExists(m_hRootKey, m_strKey); + return IsOpened() ? TRUE : KeyExists(m_hRootKey, m_strKey); } // returns the full name of the key (prefix is abbreviated if bShortPrefix) wxString wxRegKey::GetName(bool bShortPrefix) const { - StdKey key = GetStdKeyFromHkey(m_hRootKey); + StdKey key = GetStdKeyFromHkey((StdKey) m_hRootKey); wxString str = bShortPrefix ? aStdKeys[key].szShortName : aStdKeys[key].szName; if ( !m_strKey.IsEmpty() ) @@ -293,6 +309,49 @@ wxString wxRegKey::GetName(bool bShortPrefix) const return str; } +#ifdef __GNUWIN32__ +bool wxRegKey::GetKeyInfo(size_t* pnSubKeys, + size_t* pnMaxKeyLen, + size_t* pnValues, + size_t* pnMaxValueLen) const +#else +bool wxRegKey::GetKeyInfo(ulong *pnSubKeys, + ulong *pnMaxKeyLen, + ulong *pnValues, + ulong *pnMaxValueLen) const +#endif +{ +#ifdef __WIN32__ + m_dwLastError = ::RegQueryInfoKey + ( + (HKEY) m_hKey, + NULL, // class name + NULL, // (ptr to) size of class name buffer + RESERVED, + pnSubKeys, // [out] number of subkeys + pnMaxKeyLen, // [out] max length of a subkey name + NULL, // longest subkey class name + pnValues, // [out] number of values + pnMaxValueLen, // [out] max length of a value name + NULL, // longest value data + NULL, // security descriptor + NULL // time of last modification + ); + + if ( m_dwLastError != ERROR_SUCCESS ) { + wxLogSysError(m_dwLastError, _("can't get info about registry key '%s'"), + GetName().c_str()); + return FALSE; + } + else + return TRUE; +#else // Win16 + wxFAIL_MSG("GetKeyInfo() not implemented"); + + return FALSE; +#endif +} + // ---------------------------------------------------------------------------- // operations // ---------------------------------------------------------------------------- @@ -301,16 +360,20 @@ wxString wxRegKey::GetName(bool bShortPrefix) const bool wxRegKey::Open() { if ( IsOpened() ) - return true; + return TRUE; - m_dwLastError = RegOpenKey(m_hRootKey, m_strKey, &m_hKey); + HKEY tmpKey; + m_dwLastError = RegOpenKey((HKEY) m_hRootKey, m_strKey, &tmpKey); if ( m_dwLastError != ERROR_SUCCESS ) { - wxLogSysError(m_dwLastError, "can't open registry key '%s'", + wxLogSysError(m_dwLastError, _("can't open registry key '%s'"), GetName().c_str()); - return false; + return FALSE; } else - return true; + { + m_hKey = (WXHKEY) tmpKey; + return TRUE; + } } // creates key, failing if it exists and !bOkIfExists @@ -318,40 +381,44 @@ bool wxRegKey::Create(bool bOkIfExists) { // check for existence only if asked (i.e. order is important!) if ( !bOkIfExists && Exists() ) { - return false; + return FALSE; } if ( IsOpened() ) - return true; + return TRUE; - m_dwLastError = RegCreateKey(m_hRootKey, m_strKey, &m_hKey); + HKEY tmpKey; + m_dwLastError = RegCreateKey((HKEY) m_hRootKey, m_strKey, &tmpKey); if ( m_dwLastError != ERROR_SUCCESS ) { - wxLogSysError(m_dwLastError, "can't create registry key '%s'", + wxLogSysError(m_dwLastError, _("can't create registry key '%s'"), GetName().c_str()); - return false; + return FALSE; } else - return true; + { + m_hKey = (WXHKEY) tmpKey; + return TRUE; + } } // close the key, it's not an error to call it when not opened bool wxRegKey::Close() { if ( IsOpened() ) { - m_dwLastError = RegCloseKey(m_hKey); + m_dwLastError = RegCloseKey((HKEY) m_hKey); if ( m_dwLastError != ERROR_SUCCESS ) { - wxLogSysError(m_dwLastError, "can't close registry key '%s'", + wxLogSysError(m_dwLastError, _("can't close registry key '%s'"), GetName().c_str()); m_hKey = 0; - return false; + return FALSE; } else { m_hKey = 0; } } - return true; + return TRUE; } // ---------------------------------------------------------------------------- @@ -380,8 +447,8 @@ bool wxRegKey::DeleteSelf() bCont = GetNextKey(strKey, lIndex); } - uint nKeyCount = astrSubkeys.Count(); - for ( uint nKey = 0; nKey < nKeyCount; nKey++ ) { + size_t nKeyCount = astrSubkeys.Count(); + for ( size_t nKey = 0; nKey < nKeyCount; nKey++ ) { wxRegKey key(*this, astrSubkeys[nKey]); if ( !key.DeleteSelf() ) return FALSE; @@ -390,9 +457,10 @@ bool wxRegKey::DeleteSelf() // now delete this key itself Close(); - m_dwLastError = RegDeleteKey(m_hRootKey, m_strKey); + m_dwLastError = RegDeleteKey((HKEY) m_hRootKey, m_strKey); if ( m_dwLastError != ERROR_SUCCESS ) { - wxLogSysError(m_dwLastError, "can't delete key '%s'", GetName().c_str()); + wxLogSysError(m_dwLastError, _("can't delete key '%s'"), + GetName().c_str()); return FALSE; } @@ -402,7 +470,7 @@ bool wxRegKey::DeleteSelf() bool wxRegKey::DeleteKey(const char *szKey) { if ( !Open() ) - return false; + return FALSE; wxRegKey key(*this, szKey); return key.DeleteSelf(); @@ -411,52 +479,55 @@ bool wxRegKey::DeleteKey(const char *szKey) bool wxRegKey::DeleteValue(const char *szValue) { if ( !Open() ) - return false; + return FALSE; #ifdef __WIN32__ - m_dwLastError = RegDeleteValue(m_hKey, szValue); + m_dwLastError = RegDeleteValue((HKEY) m_hKey, szValue); if ( m_dwLastError != ERROR_SUCCESS ) { - wxLogSysError(m_dwLastError, "can't delete value '%s' from key '%s'", + wxLogSysError(m_dwLastError, _("can't delete value '%s' from key '%s'"), szValue, GetName().c_str()); - return false; + return FALSE; } #else //WIN16 // named registry values don't exist in Win16 world wxASSERT( IsEmpty(szValue) ); // just set the (default and unique) value of the key to "" - m_dwLastError = RegSetValue(m_hKey, NULL, REG_SZ, "", RESERVED); + m_dwLastError = RegSetValue((HKEY) m_hKey, NULL, REG_SZ, "", RESERVED); if ( m_dwLastError != ERROR_SUCCESS ) { - wxLogSysError(m_dwLastError, "can't delete value of key '%s'", + wxLogSysError(m_dwLastError, _("can't delete value of key '%s'"), GetName().c_str()); - return false; + return FALSE; } #endif //WIN16/32 - return true; + return TRUE; } // ---------------------------------------------------------------------------- // access to values and subkeys // ---------------------------------------------------------------------------- -// return true if value exists +// return TRUE if value exists bool wxRegKey::HasValue(const char *szValue) const { + // this function should be silent, so suppress possible messages from Open() + wxLogNull nolog; + #ifdef __WIN32__ if ( CONST_CAST Open() ) { - return RegQueryValueEx(m_hKey, szValue, RESERVED, + return RegQueryValueEx((HKEY) m_hKey, szValue, RESERVED, NULL, NULL, NULL) == ERROR_SUCCESS; } else - return false; + return FALSE; #else // WIN16 // only unnamed value exists return IsEmpty(szValue); #endif // WIN16/32 } -// returns true if this key has any subkeys +// returns TRUE if this key has any subkeys bool wxRegKey::HasSubkeys() const { // just call GetFirstKey with dummy parameters @@ -465,13 +536,13 @@ bool wxRegKey::HasSubkeys() const return CONST_CAST GetFirstKey(str, l); } -// returns true if given subkey exists +// returns TRUE if given subkey exists bool wxRegKey::HasSubKey(const char *szKey) const { if ( CONST_CAST Open() ) return KeyExists(m_hKey, szKey); else - return false; + return FALSE; } wxRegKey::ValueType wxRegKey::GetValueType(const char *szValue) @@ -481,10 +552,10 @@ wxRegKey::ValueType wxRegKey::GetValueType(const char *szValue) return Type_None; DWORD dwType; - m_dwLastError = RegQueryValueEx(m_hKey, szValue, RESERVED, + m_dwLastError = RegQueryValueEx((HKEY) m_hKey, szValue, RESERVED, &dwType, NULL, NULL); if ( m_dwLastError != ERROR_SUCCESS ) { - wxLogSysError(m_dwLastError, "can't read value of key '%s'", + wxLogSysError(m_dwLastError, _("can't read value of key '%s'"), GetName().c_str()); return Type_None; } @@ -499,15 +570,15 @@ wxRegKey::ValueType wxRegKey::GetValueType(const char *szValue) bool wxRegKey::SetValue(const char *szValue, long lValue) { if ( CONST_CAST Open() ) { - m_dwLastError = RegSetValueEx(m_hKey, szValue, RESERVED, REG_DWORD, + m_dwLastError = RegSetValueEx((HKEY) m_hKey, szValue, RESERVED, REG_DWORD, (RegString)&lValue, sizeof(lValue)); if ( m_dwLastError == ERROR_SUCCESS ) - return true; + return TRUE; } - wxLogSysError(m_dwLastError, "can't set value of '%s'", + wxLogSysError(m_dwLastError, _("can't set value of '%s'"), GetFullName(this, szValue)); - return false; + return FALSE; } bool wxRegKey::QueryValue(const char *szValue, long *plValue) const @@ -515,23 +586,23 @@ bool wxRegKey::QueryValue(const char *szValue, long *plValue) const if ( CONST_CAST Open() ) { DWORD dwType, dwSize = sizeof(DWORD); RegString pBuf = (RegString)plValue; - m_dwLastError = RegQueryValueEx(m_hKey, szValue, RESERVED, + m_dwLastError = RegQueryValueEx((HKEY) m_hKey, szValue, RESERVED, &dwType, pBuf, &dwSize); if ( m_dwLastError != ERROR_SUCCESS ) { - wxLogSysError(m_dwLastError, "can't read value of key '%s'", + wxLogSysError(m_dwLastError, _("can't read value of key '%s'"), GetName().c_str()); - return false; + return FALSE; } else { // check that we read the value of right type wxASSERT_MSG( dwType == REG_DWORD, "Type mismatch in wxRegKey::QueryValue()." ); - return true; + return TRUE; } } else - return false; + return FALSE; } #endif //Win32 @@ -542,57 +613,59 @@ bool wxRegKey::QueryValue(const char *szValue, wxString& strValue) const #ifdef __WIN32__ // first get the type and size of the data DWORD dwType, dwSize; - m_dwLastError = RegQueryValueEx(m_hKey, szValue, RESERVED, + m_dwLastError = RegQueryValueEx((HKEY) m_hKey, szValue, RESERVED, &dwType, NULL, &dwSize); if ( m_dwLastError == ERROR_SUCCESS ) { RegString pBuf = (RegString)strValue.GetWriteBuf(dwSize); - m_dwLastError = RegQueryValueEx(m_hKey, szValue, RESERVED, + m_dwLastError = RegQueryValueEx((HKEY) m_hKey, szValue, RESERVED, &dwType, pBuf, &dwSize); + strValue.UngetWriteBuf(); if ( m_dwLastError == ERROR_SUCCESS ) { // check that it was the right type wxASSERT_MSG( dwType == REG_SZ, "Type mismatch in wxRegKey::QueryValue()." ); - return true; + return TRUE; } } #else //WIN16 // named registry values don't exist in Win16 wxASSERT( IsEmpty(szValue) ); - m_dwLastError = RegQueryValue(m_hKey, 0, strValue.GetWriteBuf(256), &l); + m_dwLastError = RegQueryValue((HKEY) m_hKey, 0, strValue.GetWriteBuf(256), &l); + strValue.UngetWriteBuf(); if ( m_dwLastError == ERROR_SUCCESS ) - return true; + return TRUE; #endif //WIN16/32 } - wxLogSysError(m_dwLastError, "can't read value of '%s'", + wxLogSysError(m_dwLastError, _("can't read value of '%s'"), GetFullName(this, szValue)); - return false; + return FALSE; } bool wxRegKey::SetValue(const char *szValue, const wxString& strValue) { if ( CONST_CAST Open() ) { #ifdef __WIN32__ - m_dwLastError = RegSetValueEx(m_hKey, szValue, RESERVED, REG_SZ, + m_dwLastError = RegSetValueEx((HKEY) m_hKey, szValue, RESERVED, REG_SZ, (RegString)strValue.c_str(), strValue.Len() + 1); if ( m_dwLastError == ERROR_SUCCESS ) - return true; + return TRUE; #else //WIN16 // named registry values don't exist in Win16 wxASSERT( IsEmpty(szValue) ); - m_dwLastError = RegSetValue(m_hKey, NULL, REG_SZ, strValue, NULL); + m_dwLastError = RegSetValue((HKEY) m_hKey, NULL, REG_SZ, strValue, NULL); if ( m_dwLastError == ERROR_SUCCESS ) - return true; + return TRUE; #endif //WIN16/32 } - wxLogSysError(m_dwLastError, "can't set value of '%s'", + wxLogSysError(m_dwLastError, _("can't set value of '%s'"), GetFullName(this, szValue)); - return false; + return FALSE; } wxRegKey::operator wxString() const @@ -611,7 +684,7 @@ wxRegKey::operator wxString() const bool wxRegKey::GetFirstValue(wxString& strValueName, long& lIndex) { if ( !Open() ) - return false; + return FALSE; lIndex = 0; return GetNextValue(strValueName, lIndex); @@ -623,14 +696,14 @@ bool wxRegKey::GetNextValue(wxString& strValueName, long& lIndex) const // are we already at the end of enumeration? if ( lIndex == -1 ) - return false; + return FALSE; #ifdef __WIN32__ char szValueName[1024]; // @@ use RegQueryInfoKey... DWORD dwValueLen = WXSIZEOF(szValueName); lIndex++; - m_dwLastError = RegEnumValue(m_hKey, lIndex, + m_dwLastError = RegEnumValue((HKEY) m_hKey, lIndex, szValueName, &dwValueLen, RESERVED, NULL, // [out] type @@ -643,11 +716,11 @@ bool wxRegKey::GetNextValue(wxString& strValueName, long& lIndex) const lIndex = -1; } else { - wxLogSysError(m_dwLastError, "can't enumerate values of key '%s'", + wxLogSysError(m_dwLastError, _("can't enumerate values of key '%s'"), GetName().c_str()); } - return false; + return FALSE; } strValueName = szValueName; @@ -659,13 +732,13 @@ bool wxRegKey::GetNextValue(wxString& strValueName, long& lIndex) const strValueName.Empty(); #endif - return true; + return TRUE; } bool wxRegKey::GetFirstKey(wxString& strKeyName, long& lIndex) { if ( !Open() ) - return false; + return FALSE; lIndex = 0; return GetNextKey(strKeyName, lIndex); @@ -677,10 +750,10 @@ bool wxRegKey::GetNextKey(wxString& strKeyName, long& lIndex) const // are we already at the end of enumeration? if ( lIndex == -1 ) - return false; + return FALSE; char szKeyName[_MAX_PATH + 1]; - m_dwLastError = RegEnumKey(m_hKey, lIndex++, szKeyName, WXSIZEOF(szKeyName)); + m_dwLastError = RegEnumKey((HKEY) m_hKey, lIndex++, szKeyName, WXSIZEOF(szKeyName)); if ( m_dwLastError != ERROR_SUCCESS ) { if ( m_dwLastError == ERROR_NO_MORE_ITEMS ) { @@ -688,29 +761,29 @@ bool wxRegKey::GetNextKey(wxString& strKeyName, long& lIndex) const lIndex = -1; } else { - wxLogSysError(m_dwLastError, "can't enumerate subkeys of key '%s'", + wxLogSysError(m_dwLastError, _("can't enumerate subkeys of key '%s'"), GetName().c_str()); } - return false; + return FALSE; } strKeyName = szKeyName; - return true; + return TRUE; } // ============================================================================ -// implementation of global functions +// implementation of global private functions // ============================================================================ -bool KeyExists(HKEY hRootKey, const char *szKey) +bool KeyExists(WXHKEY hRootKey, const char *szKey) { HKEY hkeyDummy; - if ( RegOpenKey(hRootKey, szKey, &hkeyDummy) == ERROR_SUCCESS ) { + if ( RegOpenKey( (HKEY) hRootKey, szKey, &hkeyDummy) == ERROR_SUCCESS ) { RegCloseKey(hkeyDummy); - return true; + return TRUE; } else - return false; + return FALSE; } const char *GetFullName(const wxRegKey *pKey, const char *szValue) @@ -728,3 +801,142 @@ void RemoveTrailingSeparator(wxString& str) if ( !str.IsEmpty() && str.Last() == REG_SEPARATOR ) str.Truncate(str.Len() - 1); } + +// ============================================================================ +// global public functions +// ============================================================================ + +bool GetExtensionFromMimeType(wxString *pExt, const wxString& strMimeType) +{ + // @@@ VZ: I don't know of any official documentation which mentions this + // location, but as a matter of fact IE uses it, so why not we? + static const char *szMimeDbase = "MIME\\Database\\Content Type\\"; + + wxString strKey = szMimeDbase; + strKey << strMimeType; + + // suppress possible error messages + wxLogNull nolog; + wxRegKey key(wxRegKey::HKCR, strKey); + if ( key.Open() ) { + if ( key.QueryValue("Extension", *pExt) ) + return TRUE; + } + + // no such MIME type or no extension for it + return FALSE; +} + +bool GetMimeTypeFromExtension(wxString *pMimeType, const wxString& strExt) +{ + wxCHECK( !strExt.IsEmpty(), FALSE ); + + // add the leading point if necessary + wxString str; + if ( strExt[0] != '.' ) { + str = '.'; + } + str << strExt; + + // suppress possible error messages + wxLogNull nolog; + wxRegKey key(wxRegKey::HKCR, str); + if ( key.Open() ) { + if ( key.QueryValue("Content Type", *pMimeType) ) + return TRUE; + } + + // no such extension or no content-type + return FALSE; +} + +bool GetFileTypeFromExtension(wxString *pFileType, const wxString& strExt) +{ + wxCHECK( !strExt.IsEmpty(), FALSE ); + + // add the leading point if necessary + wxString str; + if ( strExt[0] != '.' ) { + str = '.'; + } + str << strExt; + + // suppress possible error messages + wxLogNull nolog; + wxRegKey key(wxRegKey::HKCR, str); + if ( key.Open() ) { + if ( key.QueryValue("", *pFileType) ) // it's the default value of the key + return TRUE; + } + + // no such extension or no value + return FALSE; +} + +bool GetFileTypeIcon(wxIcon *pIcon, const wxString& strFileType) +{ + wxCHECK( !strFileType.IsEmpty(), FALSE ); + + wxString strIconKey; + strIconKey << strFileType << REG_SEPARATOR << "DefaultIcon"; + + // suppress possible error messages + wxLogNull nolog; + wxRegKey key(wxRegKey::HKCR, strIconKey); + + if ( key.Open() ) { + wxString strIcon; + if ( key.QueryValue("", strIcon) ) { // it's the default value of the key + // the format is the following: , + // NB: icon index may be negative as well as positive and the full path + // may contain the environment variables inside '%' + wxString strFullPath = strIcon.Before(','), + strIndex = strIcon.Right(','); + + // index may be omitted, in which case Before(',') is empty and + // Right(',') is the whole string + if ( strFullPath.IsEmpty() ) { + strFullPath = strIndex; + strIndex = "0"; + } + + wxString strExpPath = wxExpandEnvVars(strFullPath); + int nIndex = atoi(strIndex); + + HICON hIcon = ExtractIcon(GetModuleHandle(NULL), strExpPath, nIndex); + switch ( (int)hIcon ) { + case 0: // means no icons were found + case 1: // means no such file or it wasn't a DLL/EXE/OCX/ICO/... + wxLogDebug("incorrect registry entry '%s': no such icon.", + GetFullName(&key)); + break; + + default: + pIcon->SetHICON((WXHICON)hIcon); + return TRUE; + } + } + } + + // no such file type or no value or incorrect icon entry + return FALSE; +} + +bool GetFileTypeDescription(wxString *pDesc, const wxString& strFileType) +{ + wxCHECK( !strFileType.IsEmpty(), FALSE ); + + // suppress possible error messages + wxLogNull nolog; + wxRegKey key(wxRegKey::HKCR, strFileType); + + if ( key.Open() ) { + if ( key.QueryValue("", *pDesc) ) // it's the default value of the key + return TRUE; + } + + // no such file type or no value + return FALSE; +} + +