extending calculation of visible region

[wxWidgets.git] / src / msw / registry.cpp

diff --git a/src/msw/registry.cpp b/src/msw/registry.cpp
index 620ff86358aab22d42711c9ab27557e4e8b38e82..72515030b03c476f2f708a74b1183a5aa8a6c992 100644 (file)
--- a/src/msw/registry.cpp
+++ b/src/msw/registry.cpp
@@ -12,7 +12,7 @@
 //              - add high level functions (RegisterOleServer, ...)
 ///////////////////////////////////////////////////////////////////////////////
 
-#ifdef __GNUG__
+#if defined(__GNUG__) && !defined(NO_GCC_PRAGMA)
 #pragma implementation "registry.h"
 #endif
 
@@ -36,7 +36,13 @@
 #define   WIN32_LEAN_AND_MEAN
 */
 
-#include  <windows.h>
+#include  "wx/msw/wrapwin.h"
+
+#ifdef __WXWINCE__
+#include "wx/msw/private.h"
+#include <winbase.h>
+#include <winreg.h>
+#endif
 
 // other std headers
 #include  <stdlib.h>      // for _MAX_PATH
@@ -71,10 +77,12 @@ aStdKeys[] =
   { HKEY_CURRENT_USER,      wxT("HKEY_CURRENT_USER"),      wxT("HKCU") },
   { HKEY_LOCAL_MACHINE,     wxT("HKEY_LOCAL_MACHINE"),     wxT("HKLM") },
   { HKEY_USERS,             wxT("HKEY_USERS"),             wxT("HKU")  }, // short name?
+#ifndef __WXWINCE__
   { HKEY_PERFORMANCE_DATA,  wxT("HKEY_PERFORMANCE_DATA"),  wxT("HKPD") },
-#if     WINVER >= 0x0400
+#endif
+#if WINVER >= 0x0400 && !defined(__WXWINCE__)
   { HKEY_CURRENT_CONFIG,    wxT("HKEY_CURRENT_CONFIG"),    wxT("HKCC") },
-#ifndef __GNUWIN32__
+#if !defined(__GNUWIN32__) && !defined(__WXWINCE__)
   { HKEY_DYN_DATA,          wxT("HKEY_DYN_DATA"),          wxT("HKDD") }, // short name?
 #endif  //GNUWIN32
 #endif  //WINVER >= 4.0
@@ -86,7 +94,7 @@ aStdKeys[] =
 
 // useful for Windows programmers: makes somewhat more clear all these zeroes
 // being passed to Windows APIs
-#define   RESERVED        (NULL)
+#define   RESERVED        (0)
 
 // ----------------------------------------------------------------------------
 // macros
@@ -366,38 +374,56 @@ bool wxRegKey::GetKeyInfo(size_t *pnSubKeys,
 // ----------------------------------------------------------------------------
 
 // opens key (it's not an error to call Open() on an already opened key)
-bool wxRegKey::Open()
+bool wxRegKey::Open(AccessMode mode)
 {
-  if ( IsOpened() )
-    return TRUE;
+    if ( IsOpened() )
+        return TRUE;
+
+    HKEY tmpKey;
+    m_dwLastError = ::RegOpenKeyEx
+                    (
+                        (HKEY) m_hRootKey,
+                        m_strKey,
+                        RESERVED,
+                        mode == Read ? KEY_READ : KEY_ALL_ACCESS,
+                        &tmpKey
+                    );
+
+    if ( m_dwLastError != ERROR_SUCCESS )
+    {
+        wxLogSysError(m_dwLastError, _("Can't open registry key '%s'"),
+                      GetName().c_str());
+        return FALSE;
+    }
 
-  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'"),
-                  GetName().c_str());
-    return FALSE;
-  }
-  else
-  {
     m_hKey = (WXHKEY) tmpKey;
     return TRUE;
-  }
 }
 
 // creates key, failing if it exists and !bOkIfExists
 bool wxRegKey::Create(bool bOkIfExists)
 {
   // check for existence only if asked (i.e. order is important!)
-  if ( !bOkIfExists && Exists() ) {
+  if ( !bOkIfExists && Exists() )
     return FALSE;
-  }
 
   if ( IsOpened() )
     return TRUE;
 
   HKEY tmpKey;
+#ifdef __WXWINCE__
+  DWORD disposition;
+  m_dwLastError = RegCreateKeyEx((HKEY) m_hRootKey, m_strKey,
+      NULL, // reserved
+      NULL, // class string
+      0,
+      0,
+      NULL,
+      &tmpKey,
+      &disposition);
+#else
   m_dwLastError = RegCreateKey((HKEY) m_hRootKey, m_strKey, &tmpKey);
+#endif
   if ( m_dwLastError != ERROR_SUCCESS ) {
     wxLogSysError(m_dwLastError, _("Can't create registry key '%s'"),
                   GetName().c_str());
@@ -657,7 +683,9 @@ bool wxRegKey::DeleteSelf()
   Close();
 
   m_dwLastError = RegDeleteKey((HKEY) m_hRootKey, m_strKey);
-  if ( m_dwLastError != ERROR_SUCCESS ) {
+  // deleting a key which doesn't exist is not considered an error
+  if ( m_dwLastError != ERROR_SUCCESS &&
+          m_dwLastError != ERROR_FILE_NOT_FOUND ) {
     wxLogSysError(m_dwLastError, _("Can't delete key '%s'"),
                   GetName().c_str());
     return FALSE;
@@ -846,16 +874,15 @@ bool wxRegKey::QueryValue(const wxChar *szValue,
             strValue.Empty();
         }
         else {
-            RegString pBuf = (RegString)strValue.GetWriteBuf(dwSize);
             m_dwLastError = RegQueryValueEx((HKEY) m_hKey,
                                             WXSTRINGCAST szValue,
                                             RESERVED,
                                             &dwType,
-                                            pBuf,
+                                            (RegString)(wxChar*)wxStringBuffer(strValue, dwSize),
                                             &dwSize);
-            strValue.UngetWriteBuf();
 
             // expand the var expansions in the string unless disabled
+#ifndef __WXWINCE__
             if ( (dwType == REG_EXPAND_SZ) && !raw )
             {
                 DWORD dwExpSize = ::ExpandEnvironmentStrings(strValue, NULL, 0);
@@ -866,10 +893,9 @@ bool wxRegKey::QueryValue(const wxChar *szValue,
                     ok = ::ExpandEnvironmentStrings
                            (
                             strValue,
-                            strExpValue.GetWriteBuf(dwExpSize),
+                            wxStringBuffer(strExpValue, dwExpSize),
                             dwExpSize
                            ) != 0;
-                    strExpValue.UngetWriteBuf();
                     strValue = strExpValue;
                 }
 
@@ -878,6 +904,8 @@ bool wxRegKey::QueryValue(const wxChar *szValue,
                     wxLogLastError(_T("ExpandEnvironmentStrings"));
                 }
             }
+#endif
+            // __WXWINCE__
         }
 
         if ( m_dwLastError == ERROR_SUCCESS ) {
@@ -1012,7 +1040,14 @@ bool wxRegKey::GetNextKey(wxString& strKeyName, long& lIndex) const
     return FALSE;
 
   wxChar szKeyName[_MAX_PATH + 1];
+
+#ifdef __WXWINCE__
+  DWORD sizeName = WXSIZEOF(szKeyName);
+  m_dwLastError = RegEnumKeyEx((HKEY) m_hKey, lIndex++, szKeyName, & sizeName,
+      0, NULL, NULL, NULL);
+#else
   m_dwLastError = RegEnumKey((HKEY) m_hKey, lIndex++, szKeyName, WXSIZEOF(szKeyName));
+#endif
 
   if ( m_dwLastError != ERROR_SUCCESS ) {
     if ( m_dwLastError == ERROR_NO_MORE_ITEMS ) {
@@ -1052,16 +1087,25 @@ bool wxRegKey::IsNumericValue(const wxChar *szValue) const
 
 bool KeyExists(WXHKEY hRootKey, const wxChar *szKey)
 {
-  // don't close this key itself for the case of empty szKey!
-  if ( wxIsEmpty(szKey) )
-    return TRUE;
+    // don't close this key itself for the case of empty szKey!
+    if ( wxIsEmpty(szKey) )
+        return TRUE;
+
+    HKEY hkeyDummy;
+    if ( ::RegOpenKeyEx
+         (
+            (HKEY)hRootKey,
+            szKey,
+            RESERVED,
+            KEY_READ,        // we might not have enough rights for rw access
+            &hkeyDummy
+         ) == ERROR_SUCCESS )
+    {
+        ::RegCloseKey(hkeyDummy);
+
+        return TRUE;
+    }
 
-  HKEY hkeyDummy;
-  if ( RegOpenKey( (HKEY) hRootKey, szKey, &hkeyDummy) == ERROR_SUCCESS ) {
-    RegCloseKey(hkeyDummy);
-    return TRUE;
-  }
-  else
     return FALSE;
 }