added wxSYS_COLOUR_LISTBOX

[wxWidgets.git] / include / wx / log.h

diff --git a/include/wx/log.h b/include/wx/log.h
index 7a3fd73d9e1fd71016fdc480bff4ceed29b85499..94d0beb5b6aef4d2216cd34f054900efdbe3e571 100644 (file)
--- a/include/wx/log.h
+++ b/include/wx/log.h
@@ -9,95 +9,208 @@
 // Licence:     wxWindows license
 /////////////////////////////////////////////////////////////////////////////
 
 // Licence:     wxWindows license
 /////////////////////////////////////////////////////////////////////////////
 

-#ifndef   __LOGH__
-#define   __LOGH__
+#ifndef   _WX_LOG_H_
+#define   _WX_LOG_H_

 
 

-#ifdef    __GNUG__
-#pragma interface "log.h"
-#endif  //GNU C++
+#ifdef  __GNUG__
+    #pragma interface "log.h"
+#endif
+
+#include "wx/setup.h"
+#include "wx/string.h"
+
+// ----------------------------------------------------------------------------
+// forward declarations
+// ----------------------------------------------------------------------------
+
+class WXDLLEXPORT wxTextCtrl;
+class WXDLLEXPORT wxLogFrame;
+class WXDLLEXPORT wxFrame;
+
+// ----------------------------------------------------------------------------
+// types
+// ----------------------------------------------------------------------------
+
+typedef unsigned long wxTraceMask;
+typedef unsigned long wxLogLevel;
+
+// ----------------------------------------------------------------------------
+// headers
+// ----------------------------------------------------------------------------
+
+#if wxUSE_LOG
+
+#include <time.h>   // for time_t
+
+#include "wx/dynarray.h"
+
+// ----------------------------------------------------------------------------
+// constants
+// ----------------------------------------------------------------------------
+
+// different standard log levels (you may also define your own)
+enum
+{
+    wxLOG_FatalError, // program can't continue, abort immediately
+    wxLOG_Error,      // a serious error, user must be informed about it
+    wxLOG_Warning,    // user is normally informed about it but may be ignored
+    wxLOG_Message,    // normal message (i.e. normal output of a non GUI app)
+    wxLOG_Info,       // informational message (a.k.a. 'Verbose')
+    wxLOG_Status,     // informational: might go to the status line of GUI app
+    wxLOG_Debug,      // never shown to the user, disabled in release mode
+    wxLOG_Trace,      // trace messages are also only enabled in debug mode
+    wxLOG_Progress,   // used for progress indicator (not yet)
+    wxLOG_User = 100  // user defined levels start here
+};
+
+// symbolic trace masks - wxLogTrace("foo", "some trace message...") will be
+// discarded unless the string "foo" has been added to the list of allowed
+// ones with AddTraceMask()
+
+#define wxTRACE_MemAlloc wxT("memalloc") // trace memory allocation (new/delete)
+#define wxTRACE_Messages wxT("messages") // trace window messages/X callbacks
+#define wxTRACE_ResAlloc wxT("resalloc") // trace GDI resource allocation
+#define wxTRACE_RefCount wxT("refcount") // trace various ref counting operations
+
+#ifdef  __WXMSW__
+    #define wxTRACE_OleCalls wxT("ole")  // OLE interface calls
+#endif
+
+// the trace masks have been superceded by symbolic trace constants, they're
+// for compatibility only andwill be removed soon - do NOT use them
+
+// meaning of different bits of the trace mask (which allows selectively
+// enable/disable some trace messages)
+#define wxTraceMemAlloc 0x0001  // trace memory allocation (new/delete)
+#define wxTraceMessages 0x0002  // trace window messages/X callbacks
+#define wxTraceResAlloc 0x0004  // trace GDI resource allocation
+#define wxTraceRefCount 0x0008  // trace various ref counting operations
+
+#ifdef  __WXMSW__
+    #define wxTraceOleCalls 0x0100  // OLE interface calls
+#endif
+
+#include "wx/ioswrap.h"

 
 // ----------------------------------------------------------------------------
 // derive from this class to redirect (or suppress, or ...) log messages
 // normally, only a single instance of this class exists but it's not enforced
 
 // ----------------------------------------------------------------------------
 // derive from this class to redirect (or suppress, or ...) log messages
 // normally, only a single instance of this class exists but it's not enforced

-//
-// ## would ne nice to add a time stamp to log messages

 // ----------------------------------------------------------------------------
 // ----------------------------------------------------------------------------

+

 class WXDLLEXPORT wxLog
 {
 public:
 class WXDLLEXPORT wxLog
 {
 public:

-  enum Level
-  {
-    FatalError, // program can't continue, abort immediately
-    Error,      // a serious error, user must be informed about it
-    Warning,    // warning: user is normally informed about but may ignore it
-    Message,    // normal message (i.e. normal output of a non GUI app)
-    Info,       // informational message (a.k.a. 'Verbose')
-    Status,     // informational: might go to the status line of GUI app
-    Debug,      // never shown to the user, disabled in release mode
-    Trace,      // trace messages are also only enabled in debug mode
-    Progress,   // used for progress indicator (not yet)
-    User1,      // user defined levels (use with wxLogGeneric(wxLog::User1,...)
-    User2,      //
-    User3,      //
-  };
-
-  // ctor
-  wxLog();
-
-  // sink function
-  static void OnLog(Level level, const char *szString)
-    { if ( ms_pLogger != 0 ) ms_pLogger->DoLog(level, szString); }
-
-  // message buffering
-    // flush shows all messages if they're not logged immediately
-    // (FILE and iostream logs don't need it, but wxGuiLog does to avoid
-    //  showing 17 modal dialogs one after another)
-  virtual void Flush();
-    // call Flush() only if this function returns true
-  bool HasPendingMessages() const { return m_bHasMessages; }
-
-  // only one sink is active at each moment
-    // get current log target
-  static wxLog *GetActiveTarget();
-    // change log target, pLogger = NULL disables logging,
-    // returns the previous log target
-  static wxLog *SetActiveTarget(wxLog *pLogger);
-
-  // functions controlling the default wxLog behaviour
-    // verbose mode is activated by standard command-line '-verbose' option
-  static void SetVerbose(bool bVerbose = TRUE) { ms_bVerbose = bVerbose; }
-    // sets the format for timestamp prepended by wxLog::DoLog(): it's
-    // passed to strftime() function, see it's documentation for details.
-    // the string is not copied!
-  static void SetTimeStampFormat(const char *szTimeFormat)
-    { ms_szTimeFormat = szTimeFormat; }
-
-  // accessors
-    // gets the verbose status
-  static bool GetVerbose() { return ms_bVerbose; }
-
-  // make dtor virtual for all derived classes
-  virtual ~wxLog() { }
+    // ctor
+    wxLog();
+
+    // these functions allow to completely disable all log messages
+        // is logging disabled now?
+    static bool IsEnabled() { return ms_doLog; }
+        // change the flag state, return the previous one
+    static bool EnableLogging(bool doIt = TRUE)
+        { bool doLogOld = ms_doLog; ms_doLog = doIt; return doLogOld; }
+
+    // static sink function - see DoLog() for function to overload in the
+    // derived classes
+    static void OnLog(wxLogLevel level, const wxChar *szString, time_t t)
+    {
+        if ( IsEnabled() ) {
+            wxLog *pLogger = GetActiveTarget();
+            if ( pLogger )
+                pLogger->DoLog(level, szString, t);
+        }
+    }
+
+    // message buffering
+        // flush shows all messages if they're not logged immediately (FILE
+        // and iostream logs don't need it, but wxGuiLog does to avoid showing
+        // 17 modal dialogs one after another)
+    virtual void Flush();
+        // call to Flush() may be optimized: call it only if this function
+        // returns true (although Flush() also returns immediately if there is
+        // no messages, this functions is more efficient because inline)
+    bool HasPendingMessages() const { return m_bHasMessages; }
+
+    // only one sink is active at each moment
+        // flush the active target if any
+    static void FlushActive()
+    {
+        wxLog *log = GetActiveTarget();
+        if ( log )
+            log->Flush();
+    }
+        // get current log target, will call wxApp::CreateLogTarget() to
+        // create one if none exists
+    static wxLog *GetActiveTarget();
+        // change log target, pLogger may be NULL
+    static wxLog *SetActiveTarget(wxLog *pLogger);
+
+    // functions controlling the default wxLog behaviour
+        // verbose mode is activated by standard command-line '-verbose'
+        // option
+    void SetVerbose(bool bVerbose = TRUE) { m_bVerbose = bVerbose; }
+        // should GetActiveTarget() try to create a new log object if the
+        // current is NULL?
+    static void DontCreateOnDemand() { ms_bAutoCreate = FALSE; }
+
+        // trace mask (see wxTraceXXX constants for details)
+    static void SetTraceMask(wxTraceMask ulMask) { ms_ulTraceMask = ulMask; }
+        // add string trace mask
+    static void AddTraceMask(const wxString& str) { ms_aTraceMasks.Add(str); }
+        // add string trace mask
+    static void RemoveTraceMask(const wxString& str);
+
+        // sets the timestamp string: this is used as strftime() format string
+        // for the log targets which add time stamps to the messages - set it
+        // to NULL to disable time stamping completely.
+    static void SetTimestamp(const wxChar *ts) { ms_timestamp = ts; }
+
+    // accessors
+        // gets the verbose status
+    bool GetVerbose() const { return m_bVerbose; }
+        // get trace mask
+    static wxTraceMask GetTraceMask() { return ms_ulTraceMask; }
+        // is this trace mask in the list?
+    static bool IsAllowedTraceMask(const wxChar *mask)
+        { return ms_aTraceMasks.Index(mask) != wxNOT_FOUND; }
+
+        // get the current timestamp format string (may be NULL)
+    static const wxChar *GetTimestamp() { return ms_timestamp; }
+
+    // helpers
+        // put the time stamp into the string if ms_timestamp != NULL (don't
+        // change it otherwise)
+    static void TimeStamp(wxString *str);
+
+    // make dtor virtual for all derived classes
+    virtual ~wxLog() { }

 
 protected:
 
 protected:

-  bool m_bHasMessages;
+    bool m_bHasMessages; // any messages in the queue?
+    bool m_bVerbose;     // FALSE => ignore LogInfo messages

 
 

-  // static variables
-  // ----------------
-  static bool        ms_bVerbose;     // FALSE => ignore LogInfo messages
-  static const char *ms_szTimeFormat; // format for strftime()
+    // the logging functions that can be overriden
+        // default DoLog() prepends the time stamp and a prefix corresponding
+        // to the message to szString and then passes it to DoLogString()
+    virtual void DoLog(wxLogLevel level, const wxChar *szString, time_t t);
+        // default DoLogString does nothing but is not pure virtual because if
+        // you override DoLog() you might not need it at all
+    virtual void DoLogString(const wxChar *szString, time_t t);

 
 private:
 
 private:

-  // the logging functions that can be overriden
-    // default DoLog() prepends the time stamp and a prefix corresponding
-    // to the message to szString and then passes it to DoLogString()
-  virtual void DoLog(Level level, const char *szString);
-    // default DoLogString does nothing but is not pure virtual because if
-    // you override DoLog() you might not need it at all
-  virtual void DoLogString(const char *szString);
-  
-  static wxLog *ms_pLogger;       // currently active log sink
-  static bool   ms_bInitialized;  // any log targets created?
+    // static variables
+    // ----------------
+
+    static wxLog      *ms_pLogger;      // currently active log sink
+    static bool        ms_doLog;        // FALSE => all logging disabled
+    static bool        ms_bAutoCreate;  // create new log targets on demand?
+
+    // format string for strftime(), if NULL, time stamping log messages is
+    // disabled
+    static const wxChar *ms_timestamp;
+
+    static wxTraceMask ms_ulTraceMask;   // controls wxLogTrace behaviour
+    static wxArrayString ms_aTraceMasks; // more powerful filter for wxLogTrace

 };
 
 // ----------------------------------------------------------------------------
 };
 
 // ----------------------------------------------------------------------------


@@ -108,41 +221,52 @@ private:
 class WXDLLEXPORT wxLogStderr : public wxLog
 {
 public:
 class WXDLLEXPORT wxLogStderr : public wxLog
 {
 public:

-  // redirect log output to a FILE
-  wxLogStderr(FILE *fp = NULL);
+    // redirect log output to a FILE
+    wxLogStderr(FILE *fp = (FILE *) NULL);

 
 private:
 
 private:

-  // implement sink function
-  virtual void DoLogString(const char *szString);
+    // implement sink function
+    virtual void DoLogString(const wxChar *szString, time_t t);

 
 

-  FILE *m_fp;
+    FILE *m_fp;

 };
 
 };
 

+#if wxUSE_STD_IOSTREAM

 // log everything to an "ostream", cerr by default
 class WXDLLEXPORT wxLogStream : public wxLog
 {
 public:
 // log everything to an "ostream", cerr by default
 class WXDLLEXPORT wxLogStream : public wxLog
 {
 public:

-  // redirect log output to an ostream
-  wxLogStream(ostream *ostr = NULL);
+    // redirect log output to an ostream
+    wxLogStream(ostream *ostr = (ostream *) NULL);

 
 protected:
 
 protected:

-  // implement sink function
-  virtual void DoLogString(const char *szString);
+    // implement sink function
+    virtual void DoLogString(const wxChar *szString, time_t t);

 
 

-  // @@ using ptr here to avoid including <iostream.h> from this file
-  ostream *m_ostr;
+    // using ptr here to avoid including <iostream.h> from this file
+    ostream *m_ostr;

 };
 };

+#endif
+
+// the following log targets are only compiled in if the we're compiling the
+// GUI part (andnot just the base one) of the library, they're implemented in
+// src/generic/logg.cpp *and not src/common/log.cpp unlike all the rest)
+
+#if wxUSE_GUI

 
 

-/*

 // log everything to a text window (GUI only of course)
 // log everything to a text window (GUI only of course)

-class WXDLLEXPORT wxLogTextCtrl : public wxLogStream
+class WXDLLEXPORT wxLogTextCtrl : public wxLog

 {
 public:
 {
 public:

-  // we just create an ostream from wxTextCtrl and use it in base class
-  wxLogTextCtrl(wxTextCtrl *pTextCtrl);
- ~wxLogTextCtrl();
+    wxLogTextCtrl(wxTextCtrl *pTextCtrl);
+
+private:
+    // implement sink function
+    virtual void DoLogString(const wxChar *szString, time_t t);
+
+    // the control we use
+    wxTextCtrl *m_pTextCtrl;

 };
 };

-*/

 
 // ----------------------------------------------------------------------------
 // GUI log target, the default one for wxWindows programs
 
 // ----------------------------------------------------------------------------
 // GUI log target, the default one for wxWindows programs


@@ -150,45 +274,105 @@ public:
 class WXDLLEXPORT wxLogGui : public wxLog
 {
 public:
 class WXDLLEXPORT wxLogGui : public wxLog
 {
 public:

-  // ctor
-  wxLogGui();
+    // ctor
+    wxLogGui();

 
 

-  // show all messages that were logged since the last Flush()
-  virtual void Flush();
+    // show all messages that were logged since the last Flush()
+    virtual void Flush();

 
 protected:
 
 protected:

-  virtual void DoLog(Level level, const char *szString);
+    virtual void DoLog(wxLogLevel level, const wxChar *szString, time_t t);

 
 

-  wxArrayString m_aMessages;
-  bool          m_bErrors;
+    // empty everything
+    void Clear();
+
+    wxArrayString m_aMessages;      // the log message texts
+    wxArrayInt    m_aSeverity;      // one of wxLOG_XXX values
+    wxArrayLong   m_aTimes;         // the time of each message
+    bool          m_bErrors,        // do we have any errors?
+                  m_bWarnings;      // any warnings?

 };
 
 };
 

+// ----------------------------------------------------------------------------
+// (background) log window: this class forwards all log messages to the log
+// target which was active when it was instantiated, but also collects them
+// to the log window. This window has it's own menu which allows the user to
+// close it, clear the log contents or save it to the file.
+// ----------------------------------------------------------------------------
+class WXDLLEXPORT wxLogWindow : public wxLog
+{
+public:
+    wxLogWindow(wxFrame *pParent,         // the parent frame (can be NULL)
+            const wxChar *szTitle,      // the title of the frame
+            bool bShow = TRUE,        // show window immediately?
+            bool bPassToOld = TRUE);  // pass log messages to the old target?
+    ~wxLogWindow();
+
+    // window operations
+    // show/hide the log window
+    void Show(bool bShow = TRUE);
+    // retrieve the pointer to the frame
+    wxFrame *GetFrame() const;
+
+    // accessors
+    // the previous log target (may be NULL)
+    wxLog *GetOldLog() const { return m_pOldLog; }
+    // are we passing the messages to the previous log target?
+    bool IsPassingMessages() const { return m_bPassMessages; }
+
+    // we can pass the messages to the previous log target (we're in this mode by
+    // default: we collect all messages in the window, but also let the default
+    // processing take place)
+    void PassMessages(bool bDoPass) { m_bPassMessages = bDoPass; }
+
+    // base class virtuals
+    // we don't need it ourselves, but we pass it to the previous logger
+    virtual void Flush();
+
+    // overridables
+    // called immediately after the log frame creation allowing for
+    // any extra initializations
+    virtual void OnFrameCreate(wxFrame *frame);
+    // called right before the log frame is going to be deleted
+    virtual void OnFrameDelete(wxFrame *frame);
+
+protected:
+    virtual void DoLog(wxLogLevel level, const wxChar *szString, time_t t);
+    virtual void DoLogString(const wxChar *szString, time_t t);
+
+private:
+    bool        m_bPassMessages;  // pass messages to m_pOldLog?
+    wxLog      *m_pOldLog;        // previous log target
+    wxLogFrame *m_pLogFrame;      // the log frame
+};
+
+#endif // wxUSE_GUI
+

 // ----------------------------------------------------------------------------
 // /dev/null log target: suppress logging until this object goes out of scope
 // ----------------------------------------------------------------------------
 
 // example of usage:
 /*
 // ----------------------------------------------------------------------------
 // /dev/null log target: suppress logging until this object goes out of scope
 // ----------------------------------------------------------------------------
 
 // example of usage:
 /*

-void Foo() {
-  wxFile file;
+   void Foo() {
+   wxFile file;

 
 

-  // wxFile.Open() normally complains if file can't be opened, we don't want it
-  wxLogNull logNo;
-  if ( !file.Open("bar") )
-    ... process error ourselves ...
+// wxFile.Open() normally complains if file can't be opened, we don't want it
+wxLogNull logNo;
+if ( !file.Open("bar") )
+... process error ourselves ...

 
 

-  // ~wxLogNull called, old log sink restored
+// ~wxLogNull called, old log sink restored

 }
 }

-*/
+ */

 class WXDLLEXPORT wxLogNull
 {
 public:
 class WXDLLEXPORT wxLogNull
 {
 public:

-  // ctor saves old log target, dtor restores it
-  wxLogNull() { m_pPrevLogger = wxLog::SetActiveTarget(NULL); }
- ~wxLogNull() { (void)wxLog::SetActiveTarget(m_pPrevLogger);  }
+    wxLogNull() { m_flagOld = wxLog::EnableLogging(FALSE); }
+    ~wxLogNull() { (void)wxLog::EnableLogging(m_flagOld);   }

 
 private:
 
 private:

-  wxLog *m_pPrevLogger; // old log target
+    bool m_flagOld; // the previous value of the wxLog::ms_doLog

 };
 
 // ============================================================================
 };
 
 // ============================================================================


@@ -200,19 +384,41 @@ private:
 // for log messages for easy redirection
 // ----------------------------------------------------------------------------
 
 // for log messages for easy redirection
 // ----------------------------------------------------------------------------
 

+// are we in 'verbose' mode?
+// (note that it's often handy to change this var manually from the
+//  debugger, thus enabling/disabling verbose reporting for some
+//  parts of the program only)
+WXDLLEXPORT_DATA(extern bool) g_bVerbose;
+
+// ----------------------------------------------------------------------------
+// get error code/error message from system in a portable way
+// ----------------------------------------------------------------------------
+
+// return the last system error code
+WXDLLEXPORT unsigned long wxSysErrorCode();
+// return the error message for given (or last if 0) error code
+WXDLLEXPORT const wxChar* wxSysErrorMsg(unsigned long nErrCode = 0);
+

 // define wxLog<level>
 // -------------------
 
 // define wxLog<level>
 // -------------------
 

-// NB: all these functions take `wxTString' and not
-//     `const wxTString&' because according to C++ standard
-//     the first argument to a vararg function can not be
-//     an array, function or reference :-(
+#define DECLARE_LOG_FUNCTION(level)                                 \
+extern void WXDLLEXPORT wxLog##level(const wxChar *szFormat, ...)
+#define DECLARE_LOG_FUNCTION2(level, arg1)                          \
+extern void WXDLLEXPORT wxLog##level(arg1, const wxChar *szFormat, ...)

 
 

-// the most generic log function
-void WXDLLEXPORT wxLogGeneric(wxLog::Level level, wxTString strFormat, ...);
+#else // !wxUSE_LOG

 
 

+// log functions do nothing at all

 #define DECLARE_LOG_FUNCTION(level)                                 \
 #define DECLARE_LOG_FUNCTION(level)                                 \

-        extern void WXDLLEXPORT wxLog##level(wxTString strFormat, ...)
+inline void WXDLLEXPORT wxLog##level(const wxChar *szFormat, ...) {}
+#define DECLARE_LOG_FUNCTION2(level, arg1)                          \
+inline void WXDLLEXPORT wxLog##level(arg1, const wxChar *szFormat, ...) {}
+
+#endif // wxUSE_LOG/!wxUSE_LOG
+
+// a generic function for all levels (level is passes as parameter)
+DECLARE_LOG_FUNCTION2(Generic, wxLogLevel level);

 
 // one function per each level
 DECLARE_LOG_FUNCTION(FatalError);
 
 // one function per each level
 DECLARE_LOG_FUNCTION(FatalError);


@@ -220,56 +426,77 @@ DECLARE_LOG_FUNCTION(Error);
 DECLARE_LOG_FUNCTION(Warning);
 DECLARE_LOG_FUNCTION(Message);
 DECLARE_LOG_FUNCTION(Info);
 DECLARE_LOG_FUNCTION(Warning);
 DECLARE_LOG_FUNCTION(Message);
 DECLARE_LOG_FUNCTION(Info);

-DECLARE_LOG_FUNCTION(Status);

 DECLARE_LOG_FUNCTION(Verbose);
 
 DECLARE_LOG_FUNCTION(Verbose);
 

+// this function sends the log message to the status line of the top level
+// application frame, if any
+DECLARE_LOG_FUNCTION(Status);
+
+// this one is the same as previous except that it allows to explicitly
+// specify the frame to which the output should go
+DECLARE_LOG_FUNCTION2(Status, wxFrame *pFrame);
+

 // additional one: as wxLogError, but also logs last system call error code
 // and the corresponding error message if available
 DECLARE_LOG_FUNCTION(SysError);
 
 // and another one which also takes the error code (for those broken APIs
 // that don't set the errno (like registry APIs in Win32))
 // additional one: as wxLogError, but also logs last system call error code
 // and the corresponding error message if available
 DECLARE_LOG_FUNCTION(SysError);
 
 // and another one which also takes the error code (for those broken APIs
 // that don't set the errno (like registry APIs in Win32))

-void WXDLLEXPORT wxLogSysError(long lErrCode, wxTString strFormat, ...);
+DECLARE_LOG_FUNCTION2(SysError, long lErrCode);

 
 

-// debug functions don't translate their arguments
-#undef  DECLARE_LOG_FUNCTION
-#define DECLARE_LOG_FUNCTION(level)                                 \
-        extern void WXDLLEXPORT wxLog##level(const char *szFormat, ...)
+// debug functions do nothing in release mode
+#ifdef  __WXDEBUG__
+    DECLARE_LOG_FUNCTION(Debug);

 
 

-DECLARE_LOG_FUNCTION(Debug);
-DECLARE_LOG_FUNCTION(Trace);
+    // first king of LogTrace is uncoditional: it doesn't check the level,
+    DECLARE_LOG_FUNCTION(Trace);

 
 

-// are we in 'verbose' mode?
-// (note that it's often handy to change this var manually from the
-//  debugger, thus enabling/disabling verbose reporting for some
-//  parts of the program only)
-WXDLLEXPORT_DATA(extern bool) g_bVerbose;
-
-// fwd decl to avoid including iostream.h here
-class ostream;
-
-// ----------------------------------------------------------------------------
-// get error code/error message from system in a portable way
-// ----------------------------------------------------------------------------
+    // this second version will only log the message if the mask had been
+    // added to the list of masks with AddTraceMask()
+    DECLARE_LOG_FUNCTION2(Trace, const char *mask);

 
 

-// return the last system error code
-unsigned long WXDLLEXPORT wxSysErrorCode();
-// return the error message for given (or last if 0) error code
-const char* WXDLLEXPORT wxSysErrorMsg(unsigned long nErrCode = 0);
+    // the last one does nothing if all of level bits are not set
+    // in wxLog::GetActive()->GetTraceMask() - it's deprecated in favour of
+    // string identifiers
+    DECLARE_LOG_FUNCTION2(Trace, wxTraceMask mask);
+#else   //!debug
+    // these functions do nothing in release builds
+    inline void wxLogDebug(const wxChar *, ...) { }
+    inline void wxLogTrace(const wxChar *, ...) { }
+    inline void wxLogTrace(wxTraceMask, const wxChar *, ...) { }
+    inline void wxLogTrace(const wxChar *, const wxChar *, ...) { }
+#endif // debug/!debug

 
 // ----------------------------------------------------------------------------
 // debug only logging functions: use them with API name and error code
 // ----------------------------------------------------------------------------
 
 
 // ----------------------------------------------------------------------------
 // debug only logging functions: use them with API name and error code
 // ----------------------------------------------------------------------------
 

-#ifdef  __DEBUG__
-  #define wxLogApiError(api, rc)                                              \
-                    wxLogDebug("At %s(%d) '%s' failed with error %lx (%s).",  \
-                               __FILE__, __LINE__, api,                       \
-                               rc, wxSysErrorMsg(rc))
-  #define wxLogLastError(api) wxLogApiError(api, ::GetLastError())
+#ifndef __TFILE__
+    #define __XFILE__(x) Tx)
+    #define __TFILE__ __XFILE__(__FILE__)
+#endif
+
+#ifdef __WXDEBUG__
+    // make life easier for people using VC++ IDE: clicking on the message
+    // will take us immediately to the place of the failed API
+#ifdef __VISUALC__
+    #define wxLogApiError(api, rc)                                            \
+        wxLogDebug(wxT("%s(%d): '%s' failed with error 0x%08lx (%s)."),       \
+                   __TFILE__, __LINE__, _T(api),                              \
+                   rc, wxSysErrorMsg(rc))
+#else // !VC++
+    #define wxLogApiError(api, rc)                                            \
+        wxLogDebug(wxT("In file %s at line %d: '%s' failed with "             \
+                      "error 0x%08lx (%s)."),                                 \
+                   __TFILE__, __LINE__, _T(api),                              \
+                   rc, wxSysErrorMsg(rc))
+#endif // VC++/!VC++
+
+    #define wxLogLastError(api) wxLogApiError(api, wxSysErrorCode())
+

 #else   //!debug
 #else   //!debug

-  #define wxLogApiError(api, rc)
-  #define wxLogLastError(api)
+    inline void wxLogApiError(const wxChar *, long) { }
+    inline void wxLogLastError(const wxChar *) { }

 #endif  //debug/!debug
 
 #endif  //debug/!debug
 

-#endif  //__LOGH__
+#endif  // _WX_LOG_H_