]> git.saurik.com Git - wxWidgets.git/blobdiff - src/common/log.cpp
added missing WXDLLEXPORT
[wxWidgets.git] / src / common / log.cpp
index 0f30a9e562502016902a98b240dc1bed1d8e2ef3..ca6e355e28afbea2a590074f35e4764e6d6706d7 100644 (file)
 
     #if wxUSE_GUI
         #include "wx/window.h"
+        #include "wx/msgdlg.h"
         #ifdef __WXMSW__
             #include "wx/msw/private.h"
         #endif
-        #include "wx/msgdlg.h"
     #endif
 #endif //WX_PRECOMP
 
 #include  <stdlib.h>
 #include  <time.h>
 
-#ifdef  __WXMSW__
+#if defined(__WXMSW__)
   #include  "wx/msw/private.h"      // includes windows.h for OutputDebugString
-#else   //Unix
-  #include  <signal.h>
-#endif  //Win/Unix
+#endif
+
+#if defined(__WXMAC__)
+  #include  "wx/mac/private.h"  // includes mac headers
+#endif
 
 // ----------------------------------------------------------------------------
 // non member functions
@@ -110,93 +112,118 @@ static inline bool IsLoggingEnabled()
 // ----------------------------------------------------------------------------
 
 // generic log function
-void wxLogGeneric(wxLogLevel level, const wxChar *szFormat, ...)
+void wxVLogGeneric(wxLogLevel level, const wxChar *szFormat, va_list argptr)
 {
-<<<<<<< log.cpp
-  if ( wxLog::GetActiveTarget() != NULL ) {
-    wxCRIT_SECT_LOCKER(locker, gs_csLogBuf);
-
-    va_list argptr;
-    va_start(argptr, szFormat);
-    wxVsnprintf(s_szBuf, WXSIZEOF(s_szBuf), szFormat, argptr);
-    va_end(argptr);
-=======
     if ( IsLoggingEnabled() ) {
         wxCRIT_SECT_LOCKER(locker, gs_csLogBuf);
->>>>>>> 1.93.2.3
 
-<<<<<<< log.cpp
-    wxLog::OnLog(level, s_szBuf, time(NULL));
-  }
-=======
-        va_list argptr;
-        va_start(argptr, szFormat);
         wxVsnprintf(s_szBuf, WXSIZEOF(s_szBuf), szFormat, argptr);
-        va_end(argptr);
 
         wxLog::OnLog(level, s_szBuf, time(NULL));
     }
->>>>>>> 1.93.2.3
+}
+
+void wxLogGeneric(wxLogLevel level, const wxChar *szFormat, ...)
+{
+    va_list argptr;
+    va_start(argptr, szFormat);
+    wxVLogGeneric(level, szFormat, argptr);
+    va_end(argptr);
 }
 
 #define IMPLEMENT_LOG_FUNCTION(level)                               \
-  void wxLog##level(const wxChar *szFormat, ...)                    \
+  void wxVLog##level(const wxChar *szFormat, va_list argptr)        \
   {                                                                 \
     if ( IsLoggingEnabled() ) {                                     \
       wxCRIT_SECT_LOCKER(locker, gs_csLogBuf);                      \
                                                                     \
-      va_list argptr;                                               \
-      va_start(argptr, szFormat);                                   \
       wxVsnprintf(s_szBuf, WXSIZEOF(s_szBuf), szFormat, argptr);    \
-      va_end(argptr);                                               \
                                                                     \
       wxLog::OnLog(wxLOG_##level, s_szBuf, time(NULL));             \
     }                                                               \
+  }                                                                 \
+  void wxLog##level(const wxChar *szFormat, ...)                    \
+  {                                                                 \
+    va_list argptr;                                                 \
+    va_start(argptr, szFormat);                                     \
+    wxVLog##level(szFormat, argptr);                                \
+    va_end(argptr);                                                 \
   }
 
-IMPLEMENT_LOG_FUNCTION(FatalError)
 IMPLEMENT_LOG_FUNCTION(Error)
 IMPLEMENT_LOG_FUNCTION(Warning)
 IMPLEMENT_LOG_FUNCTION(Message)
 IMPLEMENT_LOG_FUNCTION(Info)
 IMPLEMENT_LOG_FUNCTION(Status)
 
+// fatal errors can't be suppressed nor handled by the custom log target and
+// always terminate the program
+void wxVLogFatalError(const wxChar *szFormat, va_list argptr)
+{
+    wxVsnprintf(s_szBuf, WXSIZEOF(s_szBuf), szFormat, argptr);
+
+#if wxUSE_GUI
+    wxMessageBox(s_szBuf, _("Fatal Error"), wxID_OK | wxICON_STOP);
+#else
+    fprintf(stderr, _("Fatal error: %s\n"), s_szBuf);
+#endif
+
+    abort();
+}
+
+void wxLogFatalError(const wxChar *szFormat, ...)
+{
+    va_list argptr;
+    va_start(argptr, szFormat);
+    wxVLogFatalError(szFormat, argptr);
+    va_end(argptr);
+}
+
 // same as info, but only if 'verbose' mode is on
-void wxLogVerbose(const wxChar *szFormat, ...)
+void wxVLogVerbose(const wxChar *szFormat, va_list argptr)
 {
     if ( IsLoggingEnabled() ) {
         wxLog *pLog = wxLog::GetActiveTarget();
         if ( pLog != NULL && pLog->GetVerbose() ) {
             wxCRIT_SECT_LOCKER(locker, gs_csLogBuf);
 
-            va_list argptr;
-            va_start(argptr, szFormat);
             wxVsnprintf(s_szBuf, WXSIZEOF(s_szBuf), szFormat, argptr);
-            va_end(argptr);
 
             wxLog::OnLog(wxLOG_Info, s_szBuf, time(NULL));
         }
     }
 }
 
+void wxLogVerbose(const wxChar *szFormat, ...)
+{
+    va_list argptr;
+    va_start(argptr, szFormat);
+    wxVLogVerbose(szFormat, argptr);
+    va_end(argptr);
+}
+
 // debug functions
 #ifdef __WXDEBUG__
 #define IMPLEMENT_LOG_DEBUG_FUNCTION(level)                         \
-  void wxLog##level(const wxChar *szFormat, ...)                    \
+  void wxVLog##level(const wxChar *szFormat, va_list argptr)        \
   {                                                                 \
     if ( IsLoggingEnabled() ) {                                     \
       wxCRIT_SECT_LOCKER(locker, gs_csLogBuf);                      \
                                                                     \
-      va_list argptr;                                               \
-      va_start(argptr, szFormat);                                   \
       wxVsnprintf(s_szBuf, WXSIZEOF(s_szBuf), szFormat, argptr);    \
-      va_end(argptr);                                               \
                                                                     \
       wxLog::OnLog(wxLOG_##level, s_szBuf, time(NULL));             \
     }                                                               \
+  }                                                                 \
+  void wxLog##level(const wxChar *szFormat, ...)                    \
+  {                                                                 \
+    va_list argptr;                                                 \
+    va_start(argptr, szFormat);                                     \
+    wxVLog##level(szFormat, argptr);                                \
+    va_end(argptr);                                                 \
   }
 
-  void wxLogTrace(const wxChar *mask, const wxChar *szFormat, ...)
+  void wxVLogTrace(const wxChar *mask, const wxChar *szFormat, va_list argptr)
   {
     if ( IsLoggingEnabled() && wxLog::IsAllowedTraceMask(mask) ) {
       wxCRIT_SECT_LOCKER(locker, gs_csLogBuf);
@@ -215,16 +242,21 @@ void wxLogVerbose(const wxChar *szFormat, ...)
       len -= 2;
       p += 2;
 
-      va_list argptr;
-      va_start(argptr, szFormat);
       wxVsnprintf(p, len, szFormat, argptr);
-      va_end(argptr);
-
+      
       wxLog::OnLog(wxLOG_Trace, s_szBuf, time(NULL));
     }
   }
 
-  void wxLogTrace(wxTraceMask mask, const wxChar *szFormat, ...)
+  void wxLogTrace(const wxChar *mask, const wxChar *szFormat, ...)
+  {
+    va_list argptr;
+    va_start(argptr, szFormat);
+    wxVLogTrace(mask, szFormat, argptr);
+    va_end(argptr);
+  }
+
+  void wxVLogTrace(wxTraceMask mask, const wxChar *szFormat, va_list argptr)
   {
     // we check that all of mask bits are set in the current mask, so
     // that wxLogTrace(wxTraceRefCount | wxTraceOle) will only do something
@@ -232,15 +264,20 @@ void wxLogVerbose(const wxChar *szFormat, ...)
     if ( IsLoggingEnabled() && ((wxLog::GetTraceMask() & mask) == mask) ) {
       wxCRIT_SECT_LOCKER(locker, gs_csLogBuf);
 
-      va_list argptr;
-      va_start(argptr, szFormat);
       wxVsnprintf(s_szBuf, WXSIZEOF(s_szBuf), szFormat, argptr);
-      va_end(argptr);
 
       wxLog::OnLog(wxLOG_Trace, s_szBuf, time(NULL));
     }
   }
 
+  void wxLogTrace(wxTraceMask mask, const wxChar *szFormat, ...)
+  {
+    va_list argptr;
+    va_start(argptr, szFormat);
+    wxVLogTrace(mask, szFormat, argptr);
+    va_end(argptr);
+  }
+
 #else // release
   #define IMPLEMENT_LOG_DEBUG_FUNCTION(level)
 #endif
@@ -262,34 +299,44 @@ void wxLogSysErrorHelper(long lErrCode)
     wxLog::OnLog(wxLOG_Error, s_szBuf, time(NULL));
 }
 
-void WXDLLEXPORT wxLogSysError(const wxChar *szFormat, ...)
+void WXDLLEXPORT wxVLogSysError(const wxChar *szFormat, va_list argptr)
 {
     if ( IsLoggingEnabled() ) {
         wxCRIT_SECT_LOCKER(locker, gs_csLogBuf);
 
-        va_list argptr;
-        va_start(argptr, szFormat);
         wxVsnprintf(s_szBuf, WXSIZEOF(s_szBuf), szFormat, argptr);
-        va_end(argptr);
 
         wxLogSysErrorHelper(wxSysErrorCode());
     }
 }
 
-void WXDLLEXPORT wxLogSysError(long lErrCode, const wxChar *szFormat, ...)
+void WXDLLEXPORT wxLogSysError(const wxChar *szFormat, ...)
+{
+    va_list argptr;
+    va_start(argptr, szFormat);
+    wxVLogSysError(szFormat, argptr);
+    va_end(argptr);
+}
+
+void WXDLLEXPORT wxVLogSysError(long lErrCode, const wxChar *szFormat, va_list argptr)
 {
     if ( IsLoggingEnabled() ) {
         wxCRIT_SECT_LOCKER(locker, gs_csLogBuf);
 
-        va_list argptr;
-        va_start(argptr, szFormat);
         wxVsnprintf(s_szBuf, WXSIZEOF(s_szBuf), szFormat, argptr);
-        va_end(argptr);
 
         wxLogSysErrorHelper(lErrCode);
     }
 }
 
+void WXDLLEXPORT wxLogSysError(long lErrCode, const wxChar *szFormat, ...)
+{
+    va_list argptr;
+    va_start(argptr, szFormat);
+    wxVLogSysError(lErrCode, szFormat, argptr);
+    va_end(argptr);
+}
+
 // ----------------------------------------------------------------------------
 // wxLog class implementation
 // ----------------------------------------------------------------------------
@@ -297,7 +344,6 @@ void WXDLLEXPORT wxLogSysError(long lErrCode, const wxChar *szFormat, ...)
 wxLog::wxLog()
 {
     m_bHasMessages = FALSE;
-    m_bVerbose = FALSE;
 }
 
 wxLog *wxLog::GetActiveTarget()
@@ -338,6 +384,16 @@ wxLog *wxLog::SetActiveTarget(wxLog *pLogger)
     return pOldLogger;
 }
 
+void wxLog::DontCreateOnDemand()
+{
+    ms_bAutoCreate = FALSE;
+
+    // this is usually called at the end of the program and we assume that it
+    // is *always* called at the end - so we free memory here to avoid false
+    // memory leak reports from wxWin  memory tracking code
+    ClearTraceMasks();
+}
+
 void wxLog::RemoveTraceMask(const wxString& str)
 {
     int index = ms_aTraceMasks.Index(str);
@@ -345,6 +401,11 @@ void wxLog::RemoveTraceMask(const wxString& str)
         ms_aTraceMasks.Remove((size_t)index);
 }
 
+void wxLog::ClearTraceMasks()
+{
+    ms_aTraceMasks.Clear();
+}
+
 void wxLog::TimeStamp(wxString *str)
 {
     if ( ms_timestamp )
@@ -406,7 +467,8 @@ void wxLog::DoLogString(const wxChar *WXUNUSED(szString), time_t WXUNUSED(t))
 
 void wxLog::Flush()
 {
-    // do nothing
+    // remember that we don't have any more messages to show
+    m_bHasMessages = FALSE;
 }
 
 // ----------------------------------------------------------------------------
@@ -421,86 +483,196 @@ wxLogStderr::wxLogStderr(FILE *fp)
         m_fp = fp;
 }
 
-#if defined(__WXMAC__) && !defined(__UNIX__)
-#define kDebuggerSignature             'MWDB'
+#if defined(__WXMAC__) && !defined(__DARWIN__) && (__MWERKS__ > 0x5300)
+
+#if !TARGET_API_MAC_CARBON
+// MetroNub stuff doesn't seem to work in CodeWarrior 5.3 Carbon builds...
+
+#ifndef __MetroNubUtils__
+#include "MetroNubUtils.h"
+#endif
+
+#ifdef __cplusplus
+       extern "C" {
+#endif
+
+#ifndef __GESTALT__
+#include <Gestalt.h>
+#endif
+
+#ifndef true
+#define true 1
+#endif
+
+#ifndef false
+#define false 0
+#endif
+
+#if TARGET_API_MAC_CARBON
+
+       #include <CodeFragments.h>
+
+       EXTERN_API_C( long )
+       CallUniversalProc(UniversalProcPtr theProcPtr, ProcInfoType procInfo, ...);
 
-static Boolean FindProcessBySignature(OSType signature, ProcessInfoRec* info)
-{      
-       OSErr err;
-       ProcessSerialNumber psn;
-       Boolean found = false;
-       psn.highLongOfPSN = 0;
-       psn.lowLongOfPSN = kNoProcess;
+       ProcPtr gCallUniversalProc_Proc = NULL;
        
-       if (!info) return false;
+#endif
+
+static MetroNubUserEntryBlock* gMetroNubEntry = NULL;
+
+static long fRunOnce = false;
+
+Boolean IsCompatibleVersion(short inVersion);
+
+/* ---------------------------------------------------------------------------
+               IsCompatibleVersion
+   --------------------------------------------------------------------------- */
+
+Boolean IsCompatibleVersion(short inVersion)
+{
+       Boolean result = false;
        
-       info->processInfoLength = sizeof(ProcessInfoRec);
-       info->processName = NULL;
-       info->processAppSpec = NULL;
+       if (fRunOnce)
+       {
+               MetroNubUserEntryBlock* block = (MetroNubUserEntryBlock *)result;
+               
+               result = (inVersion <= block->apiHiVersion);
+       }
        
-       err = noErr;
-       while (!found && err == noErr)
+       return result;  
+}
+
+/* ---------------------------------------------------------------------------
+               IsMetroNubInstalled
+   --------------------------------------------------------------------------- */
+
+Boolean IsMetroNubInstalled()
+{
+       if (!fRunOnce)
        {
-               err = GetNextProcess(&psn);
-               if (err == noErr)
+               long result, value;
+               
+               fRunOnce = true;
+               gMetroNubEntry = NULL;
+               
+               if (Gestalt(gestaltSystemVersion, &value) == noErr && value < 0x1000)
                {
-                       err = GetProcessInformation(&psn, info);
-                       found = err == noErr && info->processSignature == signature;
+                       /* look for MetroNub's Gestalt selector */
+                       if (Gestalt(kMetroNubUserSignature, &result) == noErr)
+                       {
+                       
+                       #if TARGET_API_MAC_CARBON
+                               if (gCallUniversalProc_Proc == NULL)
+                               {
+                                       CFragConnectionID       connectionID;
+                                       Ptr                                     mainAddress;
+                                       Str255                          errorString;
+                                       ProcPtr                         symbolAddress;
+                                       OSErr                           err;
+                                       CFragSymbolClass        symbolClass;
+                                       
+                                       symbolAddress = NULL;
+                                       err = GetSharedLibrary("\pInterfaceLib", kPowerPCCFragArch, kFindCFrag,
+                                                                                       &connectionID, &mainAddress, errorString);
+                                       
+                                       if (err != noErr)
+                                       {
+                                               gCallUniversalProc_Proc = NULL;
+                                               goto end;
+                                       }
+
+                                       err = FindSymbol(connectionID, "\pCallUniversalProc",
+                                                                       (Ptr *) &gCallUniversalProc_Proc, &symbolClass);
+                                       
+                                       if (err != noErr)
+                                       {
+                                               gCallUniversalProc_Proc = NULL;
+                                               goto end;
+                                       }
+                               }
+                       #endif
+                       
+                               {
+                                       MetroNubUserEntryBlock* block = (MetroNubUserEntryBlock *)result;
+                                       
+                                       /* make sure the version of the API is compatible */
+                                       if (block->apiLowVersion <= kMetroNubUserAPIVersion &&
+                                               kMetroNubUserAPIVersion <= block->apiHiVersion)
+                                               gMetroNubEntry = block;         /* success! */
+                               }
+
+                       }
                }
-       }                               
-       return found;
+       }
+
+end:
+
+#if TARGET_API_MAC_CARBON
+       return (gMetroNubEntry != NULL && gCallUniversalProc_Proc != NULL);
+#else
+       return (gMetroNubEntry != NULL);
+#endif
 }
 
-pascal Boolean MWDebuggerIsRunning(void)
+/* ---------------------------------------------------------------------------
+               IsMWDebuggerRunning                                                                                     [v1 API]
+   --------------------------------------------------------------------------- */
+
+Boolean IsMWDebuggerRunning()
 {
-       ProcessInfoRec info;
-       return FindProcessBySignature(kDebuggerSignature, &info);
+       if (IsMetroNubInstalled())
+               return CallIsDebuggerRunningProc(gMetroNubEntry->isDebuggerRunning);
+       else
+               return false;
 }
 
-pascal OSErr AmIBeingMWDebugged(Boolean* result)
+/* ---------------------------------------------------------------------------
+               AmIBeingMWDebugged                                                                                      [v1 API]
+   --------------------------------------------------------------------------- */
+
+Boolean AmIBeingMWDebugged()
 {
-       OSErr err;
-       ProcessSerialNumber psn;
-       OSType sig = kDebuggerSignature;
-       AppleEvent      theAE = {typeNull, NULL};
-       AppleEvent      theReply = {typeNull, NULL};
-       AEAddressDesc addr  = {typeNull, NULL};
-       DescType actualType;
-       Size actualSize;
-       
-       if (!result) return paramErr;
-       
-       err = AECreateDesc(typeApplSignature, &sig, sizeof(sig), &addr);
-       if (err != noErr) goto exit;
-       
-       err = AECreateAppleEvent('MWDB', 'Dbg?', &addr,
-                               kAutoGenerateReturnID, kAnyTransactionID, &theAE);
-       if (err != noErr) goto exit;
-               
-       GetCurrentProcess(&psn);
-       err = AEPutParamPtr(&theAE, keyDirectObject, typeProcessSerialNumber,
-                       &psn, sizeof(psn));
-       if (err != noErr) goto exit;
-       
-       err = AESend(&theAE, &theReply, kAEWaitReply, kAENormalPriority,
-                                       kAEDefaultTimeout, NULL, NULL);
-       if (err != noErr) goto exit;
-       
-       err = AEGetParamPtr(&theReply, keyAEResult, typeBoolean, &actualType, result, 
-                               sizeof(Boolean), &actualSize);
+       if (IsMetroNubInstalled())
+               return CallAmIBeingDebuggedProc(gMetroNubEntry->amIBeingDebugged);
+       else
+               return false;
+}
+
+/* ---------------------------------------------------------------------------
+               UserSetWatchPoint                                                                                       [v2 API]
+   --------------------------------------------------------------------------- */
+
+OSErr UserSetWatchPoint (Ptr address, long length, WatchPointIDT* watchPointID)
+{
+       if (IsMetroNubInstalled() && IsCompatibleVersion(kMetroNubUserAPIVersion))
+               return CallUserSetWatchPointProc(gMetroNubEntry->userSetWatchPoint,
+                                                                                       address, length, watchPointID);
+       else
+               return errProcessIsNotClient;
+}
 
-exit:
-       if (addr.dataHandle)
-               AEDisposeDesc(&addr);
-       if (theAE.dataHandle)
-               AEDisposeDesc(&theAE);
-       if (theReply.dataHandle)
-               AEDisposeDesc(&theReply);
+/* ---------------------------------------------------------------------------
+               ClearWatchPoint                                                                                         [v2 API]
+   --------------------------------------------------------------------------- */
 
-       return err;
+OSErr ClearWatchPoint (WatchPointIDT watchPointID)
+{
+       if (IsMetroNubInstalled() && IsCompatibleVersion(kMetroNubUserAPIVersion))
+               return CallClearWatchPointProc(gMetroNubEntry->clearWatchPoint,
+                                                                                       watchPointID);
+       else
+               return errProcessIsNotClient;
 }
+
+#ifdef __cplusplus
+       }
 #endif
 
+#endif // !TARGET_API_MAC_CARBON
+
+#endif // defined(__WXMAC__) && !defined(__DARWIN__) && (__MWERKS__ > 0x5300)
+
 void wxLogStderr::DoLogString(const wxChar *szString, time_t WXUNUSED(t))
 {
     wxString str;
@@ -513,41 +685,35 @@ void wxLogStderr::DoLogString(const wxChar *szString, time_t WXUNUSED(t))
 
     // under Windows, programs usually don't have stderr at all, so show the
     // messages also under debugger - unless it's a console program
-#if defined(__WXMSW__) && wxUSE_GUI
+#if defined(__WXMSW__) && wxUSE_GUI && !defined(__WXMICROWIN__)
     str += wxT("\r\n") ;
     OutputDebugString(str.c_str());
 #endif // MSW
-#if defined(__WXMAC__) && !defined(__WXMAC_X__) && wxUSE_GUI
-       Str255 pstr ;
-       strcpy( (char*) pstr , str.c_str() ) ;
-       strcat( (char*) pstr , ";g" ) ;
-       c2pstr( (char*) pstr ) ;
-#if __WXDEBUG__
-       Boolean running = false ;
-       
-/*
-       if ( MWDebuggerIsRunning() )
-       {
-               AmIBeingMWDebugged( &running ) ;
-       }
-*/
-       if (running)
-       {
-       #ifdef __powerc
-               DebugStr(pstr);
-       #else
-               SysBreakStr(pstr);
-       #endif
-       }
-       else            
+#if defined(__WXMAC__) && !defined(__DARWIN__) && wxUSE_GUI
+    Str255 pstr ;
+    strcpy( (char*) pstr , str.c_str() ) ;
+    strcat( (char*) pstr , ";g" ) ;
+    c2pstr( (char*) pstr ) ;
+
+    Boolean running = false ;
+
+#if !TARGET_API_MAC_CARBON && (__MWERKS__ > 0x5300)
+
+    if ( IsMWDebuggerRunning() && AmIBeingMWDebugged() )
+    {
+        running = true ;
+    }
+
 #endif
-       {
-       #ifdef __powerc
-               DebugStr(pstr);
-       #else
-               DebugStr(pstr);
-       #endif
-       }
+
+    if (running)
+    {
+#ifdef __powerc
+        DebugStr(pstr);
+#else
+        SysBreakStr(pstr);
+#endif
+    }
 #endif // Mac
 }
 
@@ -556,10 +722,10 @@ void wxLogStderr::DoLogString(const wxChar *szString, time_t WXUNUSED(t))
 // ----------------------------------------------------------------------------
 
 #if wxUSE_STD_IOSTREAM
-wxLogStream::wxLogStream(ostream *ostr)
+wxLogStream::wxLogStream(wxSTD ostream *ostr)
 {
     if ( ostr == NULL )
-        m_ostr = &cerr;
+        m_ostr = &wxSTD cerr;
     else
         m_ostr = ostr;
 }
@@ -568,10 +734,74 @@ void wxLogStream::DoLogString(const wxChar *szString, time_t WXUNUSED(t))
 {
     wxString str;
     TimeStamp(&str);
-    (*m_ostr) << str << wxConvertWX2MB(szString) << endl;
+    (*m_ostr) << str << wxConvertWX2MB(szString) << wxSTD endl;
 }
 #endif // wxUSE_STD_IOSTREAM
 
+// ----------------------------------------------------------------------------
+// wxLogChain
+// ----------------------------------------------------------------------------
+
+wxLogChain::wxLogChain(wxLog *logger)
+{
+    m_logNew = logger;
+    m_logOld = wxLog::SetActiveTarget(this);
+}
+
+void wxLogChain::SetLog(wxLog *logger)
+{
+    if ( m_logNew != this )
+        delete m_logNew;
+
+    wxLog::SetActiveTarget(logger);
+
+    m_logNew = logger;
+}
+
+void wxLogChain::Flush()
+{
+    if ( m_logOld )
+        m_logOld->Flush();
+
+    // be careful to avoid inifinite recursion
+    if ( m_logNew && m_logNew != this )
+        m_logNew->Flush();
+}
+
+void wxLogChain::DoLog(wxLogLevel level, const wxChar *szString, time_t t)
+{
+    // let the previous logger show it
+    if ( m_logOld && IsPassingMessages() )
+    {
+        // bogus cast just to access protected DoLog
+        ((wxLogChain *)m_logOld)->DoLog(level, szString, t);
+    }
+
+    if ( m_logNew && m_logNew != this )
+    {
+        // as above...
+        ((wxLogChain *)m_logNew)->DoLog(level, szString, t);
+    }
+}
+
+// ----------------------------------------------------------------------------
+// wxLogPassThrough
+// ----------------------------------------------------------------------------
+
+#ifdef __VISUALC__
+    // "'this' : used in base member initializer list" - so what?
+    #pragma warning(disable:4355)
+#endif // VC++
+
+wxLogPassThrough::wxLogPassThrough()
+                : wxLogChain(this)
+{
+}
+
+#ifdef __VISUALC__
+    #pragma warning(default:4355)
+#endif // VC++
+
 // ============================================================================
 // Global functions/variables
 // ============================================================================
@@ -583,6 +813,7 @@ void wxLogStream::DoLogString(const wxChar *szString, time_t WXUNUSED(t))
 wxLog          *wxLog::ms_pLogger      = (wxLog *)NULL;
 bool            wxLog::ms_doLog        = TRUE;
 bool            wxLog::ms_bAutoCreate  = TRUE;
+bool            wxLog::ms_bVerbose     = FALSE;
 
 size_t          wxLog::ms_suspendCount = 0;
 
@@ -639,7 +870,7 @@ static void wxLogWrap(FILE *f, const char *pszPrefix, const char *psz)
 // get error code from syste
 unsigned long wxSysErrorCode()
 {
-#ifdef  __WXMSW__
+#if defined(__WXMSW__) && !defined(__WXMICROWIN__)
 #ifdef  __WIN32__
     return ::GetLastError();
 #else   //WIN16
@@ -657,7 +888,7 @@ const wxChar *wxSysErrorMsg(unsigned long nErrCode)
     if ( nErrCode == 0 )
         nErrCode = wxSysErrorCode();
 
-#ifdef  __WXMSW__
+#if defined(__WXMSW__) && !defined(__WXMICROWIN__)
 #ifdef  __WIN32__
     static wxChar s_szBuf[LOG_BUFFER_SIZE / 2];
 
@@ -670,17 +901,23 @@ const wxChar *wxSysErrorMsg(unsigned long nErrCode)
             0, NULL);
 
     // copy it to our buffer and free memory
-    wxStrncpy(s_szBuf, (const wxChar *)lpMsgBuf, WXSIZEOF(s_szBuf) - 1);
-    s_szBuf[WXSIZEOF(s_szBuf) - 1] = wxT('\0');
-    LocalFree(lpMsgBuf);
-
-    // returned string is capitalized and ended with '\r\n' - bad
-    s_szBuf[0] = (wxChar)wxTolower(s_szBuf[0]);
-    size_t len = wxStrlen(s_szBuf);
-    if ( len > 0 ) {
-        // truncate string
-        if ( s_szBuf[len - 2] == wxT('\r') )
-            s_szBuf[len - 2] = wxT('\0');
+    if( lpMsgBuf != 0 ) {
+        wxStrncpy(s_szBuf, (const wxChar *)lpMsgBuf, WXSIZEOF(s_szBuf) - 1);
+        s_szBuf[WXSIZEOF(s_szBuf) - 1] = wxT('\0');
+
+        LocalFree(lpMsgBuf);
+
+        // returned string is capitalized and ended with '\r\n' - bad
+        s_szBuf[0] = (wxChar)wxTolower(s_szBuf[0]);
+        size_t len = wxStrlen(s_szBuf);
+        if ( len > 0 ) {
+            // truncate string
+            if ( s_szBuf[len - 2] == wxT('\r') )
+                s_szBuf[len - 2] = wxT('\0');
+        }
+    }
+    else {
+        s_szBuf[0] = wxT('\0');
     }
 
     return s_szBuf;
@@ -699,116 +936,4 @@ const wxChar *wxSysErrorMsg(unsigned long nErrCode)
 #endif  // Win/Unix
 }
 
-// ----------------------------------------------------------------------------
-// debug helper
-// ----------------------------------------------------------------------------
-
-#ifdef  __WXDEBUG__
-
-// break into the debugger
-void Trap()
-{
-#ifdef __WXMSW__
-    DebugBreak();
-#elif defined(__WXMAC__)
-#if __powerc
-    Debugger();
-#else
-    SysBreak();
-#endif
-#elif defined(__UNIX__)
-    raise(SIGTRAP);
-#else
-    // TODO
-#endif // Win/Unix
-}
-
-// this function is called when an assert fails
-void wxOnAssert(const wxChar *szFile, int nLine, const wxChar *szMsg)
-{
-    // this variable can be set to true to suppress "assert failure" messages
-    static bool s_bNoAsserts = FALSE;
-    static bool s_bInAssert = FALSE;        // FIXME MT-unsafe
-
-    if ( s_bInAssert ) {
-        // He-e-e-e-elp!! we're trapped in endless loop
-        Trap();
-
-        s_bInAssert = FALSE;
-
-        return;
-    }
-
-    s_bInAssert = TRUE;
-
-    wxChar szBuf[LOG_BUFFER_SIZE];
-
-    // make life easier for people using VC++ IDE: clicking on the message
-    // will take us immediately to the place of the failed assert
-    wxSnprintf(szBuf, WXSIZEOF(szBuf),
-#ifdef __VISUALC__
-               wxT("%s(%d): assert failed"),
-#else  // !VC++
-    // make the error message more clear for all the others
-               wxT("Assert failed in file %s at line %d"),
-#endif // VC/!VC
-               szFile, nLine);
-
-    if ( szMsg != NULL ) {
-        wxStrcat(szBuf, wxT(": "));
-        wxStrcat(szBuf, szMsg);
-    }
-    else {
-        wxStrcat(szBuf, wxT("."));
-    }
-
-    if ( !s_bNoAsserts ) {
-        // send it to the normal log destination
-        wxLogDebug(szBuf);
-
-#if wxUSE_GUI || defined(__WXMSW__)
-        // this message is intentionally not translated - it is for
-        // developpers only
-        wxStrcat(szBuf, wxT("\nDo you want to stop the program?\nYou can also choose [Cancel] to suppress further warnings."));
-
-        // use the native message box if available: this is more robust than
-        // using our own
-#ifdef __WXMSW__
-        switch ( ::MessageBox(NULL, szBuf, _T("Debug"),
-                              MB_YESNOCANCEL | MB_ICONSTOP ) ) {
-            case IDYES:
-                Trap();
-                break;
-
-            case IDCANCEL:
-                s_bNoAsserts = TRUE;
-                break;
-
-            //case IDNO: nothing to do
-        }
-#else // !MSW
-        switch ( wxMessageBox(szBuf, wxT("Debug"),
-                              wxYES_NO | wxCANCEL | wxICON_STOP ) ) {
-            case wxYES:
-                Trap();
-                break;
-
-            case wxCANCEL:
-                s_bNoAsserts = TRUE;
-                break;
-
-            //case wxNO: nothing to do
-        }
-#endif // GUI or MSW
-
-#else // !GUI
-        Trap();
-#endif // GUI/!GUI
-    }
-
-    s_bInAssert = FALSE;
-}
-
-#endif  //WXDEBUG
-
 #endif //wxUSE_LOG