/////////////////////////////////////////////////////////////////////////////
-// Name: log.h
+// Name: wx/log.h
// Purpose: Assorted wxLogXXX functions, and wxLog (sink for logs)
// Author: Vadim Zeitlin
// Modified by:
// Created: 29/01/98
// RCS-ID: $Id$
// Copyright: (c) 1998 Vadim Zeitlin <zeitlin@dptmaths.ens-cachan.fr>
-// Licence: wxWindows license
+// Licence: wxWindows licence
/////////////////////////////////////////////////////////////////////////////
-#ifndef __LOGH__
-#define __LOGH__
+#ifndef _WX_LOG_H_
+#define _WX_LOG_H_
-#ifdef __GNUG__
-#pragma interface "log.h"
-#endif //GNU C++
+#include "wx/defs.h"
+
+// ----------------------------------------------------------------------------
+// common constants for use in wxUSE_LOG/!wxUSE_LOG
+// ----------------------------------------------------------------------------
+
+// the trace masks have been superceded by symbolic trace constants, they're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
+
+// ----------------------------------------------------------------------------
+// types
+// ----------------------------------------------------------------------------
+
+// NB: these types are needed even if wxUSE_LOG == 0
+typedef unsigned long wxTraceMask;
+typedef unsigned long wxLogLevel;
+
+// ----------------------------------------------------------------------------
+// headers
+// ----------------------------------------------------------------------------
+
+#include "wx/string.h"
+
+#if wxUSE_LOG
+
+#include "wx/arrstr.h"
+
+#ifndef __WXWINCE__
+ #include <time.h> // for time_t
+#endif
+
+#include "wx/dynarray.h"
+
+#ifndef wxUSE_LOG_DEBUG
+# ifdef __WXDEBUG__
+# define wxUSE_LOG_DEBUG 1
+# else // !__WXDEBUG__
+# define wxUSE_LOG_DEBUG 0
+# endif
+#endif
+
+// ----------------------------------------------------------------------------
+// forward declarations
+// ----------------------------------------------------------------------------
+
+#if wxUSE_GUI
+ class WXDLLIMPEXP_CORE wxTextCtrl;
+ class WXDLLIMPEXP_CORE wxLogFrame;
+ class WXDLLIMPEXP_CORE wxFrame;
+ class WXDLLIMPEXP_CORE wxWindow;
+#endif // wxUSE_GUI
+
+// ----------------------------------------------------------------------------
+// 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_Status, // informational: might go to the status line of GUI app
+ wxLOG_Info, // informational message (a.k.a. 'Verbose')
+ 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
+ wxLOG_Max = 10000
+};
+
+// 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
+
+#include "wx/iosfwrap.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
-//
-// ## would ne nice to add a time stamp to log messages
// ----------------------------------------------------------------------------
-class WXDLLEXPORT wxLog
+
+class WXDLLIMPEXP_BASE 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
+ // 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);
+
+ // 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();
+
+ // flush the active target if any
+ static void FlushActive()
+ {
+ if ( !ms_suspendCount )
+ {
+ wxLog *log = GetActiveTarget();
+ if ( log )
+ log->Flush();
+ }
+ }
+
+ // only one sink is active at each moment
+ // 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);
+
+ // suspend the message flushing of the main target until the next call
+ // to Resume() - this is mainly for internal use (to prevent wxYield()
+ // from flashing the messages)
+ static void Suspend() { ms_suspendCount++; }
+
+ // must be called for each Suspend()!
+ static void Resume() { ms_suspendCount--; }
+
+ // 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; }
+
+ // Set log level. Log messages with level > logLevel will not be logged.
+ static void SetLogLevel(wxLogLevel logLevel) { ms_logLevel = logLevel; }
+
+ // should GetActiveTarget() try to create a new log object if the
+ // current is NULL?
+ static void DontCreateOnDemand();
+
+ // log the count of repeating messages instead of logging the messages
+ // multiple times
+ static void SetRepetitionCounting(bool bRepetCounting = true)
+ { ms_bRepetCounting = bRepetCounting; }
+
+ // gets duplicate counting status
+ static bool GetRepetitionCounting() { return ms_bRepetCounting; }
+
+ // 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.push_back(str); }
+
+ // add string trace mask
+ static void RemoveTraceMask(const wxString& str);
+
+ // remove all string trace masks
+ static void ClearTraceMasks();
+
+ // get string trace masks
+ static const wxArrayString &GetTraceMasks() { return ms_aTraceMasks; }
+
+ // 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
- static bool GetVerbose() { return ms_bVerbose; }
+ static bool GetVerbose() { return ms_bVerbose; }
- // make dtor virtual for all derived classes
- virtual ~wxLog() { }
+ // get trace mask
+ static wxTraceMask GetTraceMask() { return ms_ulTraceMask; }
-protected:
- bool m_bHasMessages;
+ // is this trace mask in the list?
+ static bool IsAllowedTraceMask(const wxChar *mask);
- // static variables
- // ----------------
- static bool ms_bVerbose; // FALSE => ignore LogInfo messages
- static const char *ms_szTimeFormat; // format for strftime()
+ // return the current loglevel limit
+ static wxLogLevel GetLogLevel() { return ms_logLevel; }
+
+ // 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();
+
+
+ // this method exists for backwards compatibility only, don't use
+ bool HasPendingMessages() const { return true; }
+
+#if WXWIN_COMPATIBILITY_2_6
+ // this function doesn't do anything any more, don't call it
+ wxDEPRECATED( static wxChar *SetLogBuffer(wxChar *buf, size_t size = 0) );
+#endif
+
+protected:
+ // the logging functions that can be overriden
-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);
+ 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 char *szString);
-
- static wxLog *ms_pLogger; // currently active log sink
- static bool ms_bInitialized; // any log targets created?
+ virtual void DoLogString(const wxChar *szString, time_t t);
+
+ // log a line containing the number of times the previous message was
+ // repeated
+ // returns: the number
+ static unsigned DoLogNumberOfRepeats();
+
+private:
+ // static variables
+ // ----------------
+
+ // traditional behaviour or counting repetitions
+ static bool ms_bRepetCounting;
+ static wxString ms_prevString; // previous message that was logged
+ // how many times the previous message was logged
+ static unsigned ms_prevCounter;
+ static time_t ms_prevTimeStamp;// timestamp of the previous message
+ static wxLogLevel ms_prevLevel; // level of the previous message
+
+ 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?
+ static bool ms_bVerbose; // false => ignore LogInfo messages
+
+ static wxLogLevel ms_logLevel; // limit logging to levels <= ms_logLevel
+
+ static size_t ms_suspendCount; // if positive, logs are not flushed
+
+ // 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
};
// ----------------------------------------------------------------------------
// "trivial" derivations of wxLog
// ----------------------------------------------------------------------------
-// log everything to a "FILE *", stderr by default
-class WXDLLEXPORT wxLogStderr : public wxLog
+// log everything to a buffer
+class WXDLLIMPEXP_BASE wxLogBuffer : public wxLog
{
public:
- // redirect log output to a FILE
- wxLogStderr(FILE *fp = NULL);
+ wxLogBuffer() { }
+
+ // get the string contents with all messages logged
+ const wxString& GetBuffer() const { return m_str; }
+
+ // show the buffer contents to the user in the best possible way (this uses
+ // wxMessageOutputMessageBox) and clear it
+ virtual void Flush();
+
+protected:
+ virtual void DoLog(wxLogLevel level, const wxChar *szString, time_t t);
+ virtual void DoLogString(const wxChar *szString, time_t t);
private:
- // implement sink function
- virtual void DoLogString(const char *szString);
+ wxString m_str;
+
+ DECLARE_NO_COPY_CLASS(wxLogBuffer)
+};
+
+
+// log everything to a "FILE *", stderr by default
+class WXDLLIMPEXP_BASE wxLogStderr : public wxLog
+{
+public:
+ // redirect log output to a FILE
+ wxLogStderr(FILE *fp = (FILE *) NULL);
+
+protected:
+ // implement sink function
+ virtual void DoLogString(const wxChar *szString, time_t t);
- FILE *m_fp;
+ FILE *m_fp;
+
+ DECLARE_NO_COPY_CLASS(wxLogStderr)
};
+#if wxUSE_STD_IOSTREAM
+
// log everything to an "ostream", cerr by default
-class WXDLLEXPORT wxLogStream : public wxLog
+class WXDLLIMPEXP_BASE wxLogStream : public wxLog
{
public:
- // redirect log output to an ostream
- wxLogStream(ostream *ostr = NULL);
+ // redirect log output to an ostream
+ wxLogStream(wxSTD ostream *ostr = (wxSTD ostream *) NULL);
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
+ wxSTD ostream *m_ostr;
};
+#endif // wxUSE_STD_IOSTREAM
+
+// ----------------------------------------------------------------------------
+// /dev/null log target: suppress logging until this object goes out of scope
+// ----------------------------------------------------------------------------
+
+// example of usage:
/*
-// log everything to a text window (GUI only of course)
-class WXDLLEXPORT wxLogTextCtrl : public wxLogStream
+ 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 ...
+
+ // ~wxLogNull called, old log sink restored
+ }
+ */
+class WXDLLIMPEXP_BASE wxLogNull
{
public:
- // we just create an ostream from wxTextCtrl and use it in base class
- wxLogTextCtrl(wxTextCtrl *pTextCtrl);
- ~wxLogTextCtrl();
+ wxLogNull() : m_flagOld(wxLog::EnableLogging(false)) { }
+ ~wxLogNull() { (void)wxLog::EnableLogging(m_flagOld); }
+
+private:
+ bool m_flagOld; // the previous value of the wxLog::ms_doLog
};
-*/
// ----------------------------------------------------------------------------
-// GUI log target, the default one for wxWindows programs
+// chaining log target: installs itself as a log target and passes all
+// messages to the real log target given to it in the ctor but also forwards
+// them to the previously active one
+//
+// note that you don't have to call SetActiveTarget() with this class, it
+// does it itself in its ctor
// ----------------------------------------------------------------------------
-class WXDLLEXPORT wxLogGui : public wxLog
+
+class WXDLLIMPEXP_BASE wxLogChain : public wxLog
{
public:
- // ctor
- wxLogGui();
+ wxLogChain(wxLog *logger);
+ virtual ~wxLogChain();
- // show all messages that were logged since the last Flush()
- virtual void Flush();
+ // change the new log target
+ void SetLog(wxLog *logger);
+
+ // this can be used to temporarily disable (and then reenable) passing
+ // messages to the old logger (by default we do pass them)
+ void PassMessages(bool bDoPass) { m_bPassMessages = bDoPass; }
+
+ // are we passing the messages to the previous log target?
+ bool IsPassingMessages() const { return m_bPassMessages; }
+
+ // return the previous log target (may be NULL)
+ wxLog *GetOldLog() const { return m_logOld; }
+
+ // override base class version to flush the old logger as well
+ virtual void Flush();
protected:
- virtual void DoLog(Level level, const char *szString);
+ // pass the chain to the old logger if needed
+ virtual void DoLog(wxLogLevel level, const wxChar *szString, time_t t);
- wxArrayString m_aMessages;
- bool m_bErrors;
-};
+private:
+ // the current log target
+ wxLog *m_logNew;
-// ----------------------------------------------------------------------------
-// /dev/null log target: suppress logging until this object goes out of scope
-// ----------------------------------------------------------------------------
+ // the previous log target
+ wxLog *m_logOld;
-// example of usage:
-/*
-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 ...
-
- // ~wxLogNull called, old log sink restored
-}
-*/
-class WXDLLEXPORT wxLogNull
+ // do we pass the messages to the old logger?
+ bool m_bPassMessages;
+
+ DECLARE_NO_COPY_CLASS(wxLogChain)
+};
+
+// a chain log target which uses itself as the new logger
+class WXDLLIMPEXP_BASE wxLogPassThrough : public wxLogChain
{
public:
- // ctor saves old log target, dtor restores it
- wxLogNull() { m_pPrevLogger = wxLog::SetActiveTarget(NULL); }
- ~wxLogNull() { (void)wxLog::SetActiveTarget(m_pPrevLogger); }
+ wxLogPassThrough();
private:
- wxLog *m_pPrevLogger; // old log target
+ DECLARE_NO_COPY_CLASS(wxLogPassThrough)
};
+#if wxUSE_GUI
+ // include GUI log targets:
+ #include "wx/generic/logg.h"
+#endif // wxUSE_GUI
+
// ============================================================================
// global functions
// ============================================================================
// for log messages for easy redirection
// ----------------------------------------------------------------------------
+// ----------------------------------------------------------------------------
+// get error code/error message from system in a portable way
+// ----------------------------------------------------------------------------
+
+// return the last system error code
+WXDLLIMPEXP_BASE unsigned long wxSysErrorCode();
+
+// return the error message for given (or last if 0) error code
+WXDLLIMPEXP_BASE const wxChar* wxSysErrorMsg(unsigned long nErrCode = 0);
+
+// ----------------------------------------------------------------------------
// define wxLog<level>
-// -------------------
+// ----------------------------------------------------------------------------
+
+#define DECLARE_LOG_FUNCTION(level) \
+extern void WXDLLIMPEXP_BASE wxVLog##level(const wxChar *szFormat, \
+ va_list argptr); \
+extern void WXDLLIMPEXP_BASE wxLog##level(const wxChar *szFormat, \
+ ...) ATTRIBUTE_PRINTF_1
+#define DECLARE_LOG_FUNCTION2_EXP(level, argclass, arg, expdecl) \
+extern void expdecl wxVLog##level(argclass arg, \
+ const wxChar *szFormat, \
+ va_list argptr); \
+extern void expdecl wxLog##level(argclass arg, \
+ const wxChar *szFormat, \
+ ...) ATTRIBUTE_PRINTF_2
+#else // !wxUSE_LOG
+
+// log functions do nothing at all
+#define DECLARE_LOG_FUNCTION(level) \
+inline void wxVLog##level(const wxChar *WXUNUSED(szFormat), \
+ va_list WXUNUSED(argptr)) { } \
+inline void wxLog##level(const wxChar *WXUNUSED(szFormat), \
+ ...) { }
+#define DECLARE_LOG_FUNCTION2_EXP(level, argclass, arg, expdecl) \
+inline void wxVLog##level(argclass WXUNUSED(arg), \
+ const wxChar *WXUNUSED(szFormat), \
+ va_list WXUNUSED(argptr)) {} \
+inline void wxLog##level(argclass WXUNUSED(arg), \
+ const wxChar *WXUNUSED(szFormat), \
+ ...) { }
+
+// Empty Class to fake wxLogNull
+class WXDLLIMPEXP_BASE wxLogNull
+{
+public:
+ wxLogNull() { }
+};
+
+// Dummy macros to replace some functions.
+#define wxSysErrorCode() (unsigned long)0
+#define wxSysErrorMsg( X ) (const wxChar*)NULL
-// 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 :-(
+// Fake symbolic trace masks... for those that are used frequently
+#define wxTRACE_OleCalls wxEmptyString // OLE interface calls
-// the most generic log function
-void WXDLLEXPORT wxLogGeneric(wxLog::Level level, wxTString strFormat, ...);
+#endif // wxUSE_LOG/!wxUSE_LOG
-#define DECLARE_LOG_FUNCTION(level) \
- extern void WXDLLEXPORT wxLog##level(wxTString strFormat, ...)
+#define DECLARE_LOG_FUNCTION2(level, argclass, arg) \
+ DECLARE_LOG_FUNCTION2_EXP(level, argclass, arg, WXDLLIMPEXP_BASE)
+
+
+// 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);
DECLARE_LOG_FUNCTION(Warning);
DECLARE_LOG_FUNCTION(Message);
DECLARE_LOG_FUNCTION(Info);
-DECLARE_LOG_FUNCTION(Status);
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);
+
+#if wxUSE_GUI
+ // this one is the same as previous except that it allows to explicitly
+ class WXDLLEXPORT wxFrame;
+ // specify the frame to which the output should go
+ DECLARE_LOG_FUNCTION2_EXP(Status, wxFrame *, pFrame, WXDLLIMPEXP_CORE);
+#endif // wxUSE_GUI
+
// 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, ...);
-
-// debug functions don't translate their arguments
-#undef DECLARE_LOG_FUNCTION
-#define DECLARE_LOG_FUNCTION(level) \
- extern void WXDLLEXPORT wxLog##level(const char *szFormat, ...)
-
-DECLARE_LOG_FUNCTION(Debug);
-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
-// ----------------------------------------------------------------------------
-
-// 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);
+DECLARE_LOG_FUNCTION2(SysError, long, lErrCode);
+
+// debug functions do nothing in release mode
+#if wxUSE_LOG && wxUSE_LOG_DEBUG
+ DECLARE_LOG_FUNCTION(Debug);
+
+ // there is no more unconditional LogTrace: it is not different from
+ // LogDebug and it creates overload ambiguities
+ //DECLARE_LOG_FUNCTION(Trace);
+
+ // this version only logs the message if the mask had been added to the
+ // list of masks with AddTraceMask()
+ DECLARE_LOG_FUNCTION2(Trace, const wxChar *, mask);
+
+ // and this 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 || !wxUSE_LOG
+ // these functions do nothing in release builds, but don't define them as
+ // nothing as it could result in different code structure in debug and
+ // release and this could result in trouble when these macros are used
+ // inside if/else
+ //
+ // note that making wxVLogDebug/Trace() themselves (empty inline) functions
+ // is a bad idea as some compilers are stupid enough to not inline even
+ // empty functions if their parameters are complicated enough, but by
+ // defining them as an empty inline function we ensure that even dumbest
+ // compilers optimise them away
+ inline void wxLogNop() { }
+
+ #define wxVLogDebug(fmt, valist) wxLogNop()
+ #define wxVLogTrace(mask, fmt, valist) wxLogNop()
+
+ #ifdef HAVE_VARIADIC_MACROS
+ // unlike the inline functions below, this completely removes the
+ // wxLogXXX calls from the object file:
+ #define wxLogDebug(fmt, ...) wxLogNop()
+ #define wxLogTrace(mask, fmt, ...) wxLogNop()
+ #else // !HAVE_VARIADIC_MACROS
+ // note that leaving out "fmt" in the vararg functions provokes a warning
+ // from SGI CC: "the last argument of the varargs function is unnamed"
+ inline void wxLogDebug(const wxChar *fmt, ...) { wxUnusedVar(fmt); }
+ inline void wxLogTrace(wxTraceMask, const wxChar *fmt, ...) { wxUnusedVar(fmt); }
+ inline void wxLogTrace(const wxChar *, const wxChar *fmt, ...) { wxUnusedVar(fmt); }
+ #endif // HAVE_VARIADIC_MACROS/!HAVE_VARIADIC_MACROS
+#endif // debug/!debug
+
+// wxLogFatalError helper: show the (fatal) error to the user in a safe way,
+// i.e. without using wxMessageBox() for example because it could crash
+void WXDLLIMPEXP_BASE
+wxSafeShowMessage(const wxString& title, const wxString& text);
// ----------------------------------------------------------------------------
// 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())
+#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__, api, \
+ (long)rc, wxSysErrorMsg(rc))
+#else // !VC++
+ #define wxLogApiError(api, rc) \
+ wxLogDebug(wxT("In file %s at line %d: '%s' failed with ") \
+ wxT("error 0x%08lx (%s)."), \
+ __TFILE__, __LINE__, api, \
+ (long)rc, wxSysErrorMsg(rc))
+#endif // VC++/!VC++
+
+ #define wxLogLastError(api) wxLogApiError(api, wxSysErrorCode())
+
#else //!debug
- #define wxLogApiError(api, rc)
- #define wxLogLastError(api)
+ #define wxLogApiError(api, err) wxLogNop()
+ #define wxLogLastError(api) wxLogNop()
#endif //debug/!debug
-#endif //__LOGH__
+// wxCocoa has additiional trace masks
+#if defined(__WXCOCOA__)
+#include "wx/cocoa/log.h"
+#endif
+
+#endif // _WX_LOG_H_
+
projects / wxWidgets.git / blobdiff