\section{\class{wxLog}}\label{wxlog}
-wxLog class defines the interface for the {\it log targets} used by wxWindows
+wxLog class defines the interface for the {\it log targets} used by wxWidgets
logging functions as explained in the \helpref{wxLog overview}{wxlogoverview}.
The only situations when you need to directly use this class is when you want
to derive your own log target because the existing ones don't satisfy your
Otherwise, it is completely hidden behind the {\it wxLogXXX()} functions and
you may not even know about its existence.
-See \helpref{log overview}{wxlogoverview} for the descriptions of wxWindows
+See \helpref{log overview}{wxlogoverview} for the descriptions of wxWidgets
logging facilities.
\wxheading{Derived from}
\latexignore{\rtfignore{\wxheading{Function groups}}}
-\membersection{Static functions}
+\membersection{Static functions}\label{staticlogfunctions}
The functions in this section work with and manipulate the active log target.
The \helpref{OnLog()}{wxlogonlog} is called by the {\it wxLogXXX()} functions
\helpref{Suspend}{wxlogsuspend}\\
\helpref{Resume}{wxlogresume}
-\membersection{Logging functions}
+\membersection{Logging functions}\label{loggingfunctions}
There are two functions which must be implemented by any derived class to
-actually process the log messages: \helpref{DoLog}{wxlogdolog} and
+actually process the log messages: \helpref{DoLog}{wxlogdolog} and
\helpref{DoLogString}{wxlogdologstring}. The second function receives a string
which just has to be output in some way and the easiest way to write a new log
target is to override just this function in the derived class. If more control
There also functions to support message buffering. Why are they needed?
Some of wxLog implementations, most notably the standard wxLogGui class,
buffer the messages (for example, to avoid showing the user a zillion of modal
-message boxes one after another - which would be really annoying).
+message boxes one after another -- which would be really annoying).
\helpref{Flush()}{wxlogflush} shows them all and clears the buffer contents.
-Although this function doesn't do anything if the buffer is already empty,
-\helpref{HasPendingMessages()}{wxloghaspendingmessages} is also provided which
-allows to explicitly verify it.
+This function doesn't do anything if the buffer is already empty.
\helpref{Flush}{wxlogflush}\\
-\helpref{FlushActive}{wxlogflushactive}\\
-\helpref{HasPendingMessages}{wxloghaspendingmessages}
+\helpref{FlushActive}{wxlogflushactive}
\membersection{Customization}\label{wxlogcustomization}
As for the (real) trace messages, their handling depends on the settings of
the (application global) {\it trace mask}. There are two ways to specify it:
-either by using \helpref{SetTraceMask}{wxlogsettracemask} and
-\helpref{GetTraceMask}{wxloggettracemask} and using
-\helpref{wxLogTrace}{wxlogtrace} which takes an integer mask or by using
+either by using \helpref{SetTraceMask}{wxlogsettracemask} and
+\helpref{GetTraceMask}{wxloggettracemask} and using
+\helpref{wxLogTrace}{wxlogtrace} which takes an integer mask or by using
\helpref{AddTraceMask}{wxlogaddtracemask} for string trace masks.
The difference between bit-wise and string trace masks is that a message using
// wxTraceOleCalls is one of standard bit masks
wxLogTrace(wxTraceRefCount | wxTraceOleCalls, "Active object ref count: %d", nRef);
\end{verbatim}
-will do something only if the current trace mask contains both
+will do something only if the current trace mask contains both
{\tt wxTraceRefCount} and {\tt wxTraceOle}, but
\begin{verbatim}
kept for compatibility and for additional (but very rarely needed) flexibility
only.
-The standard trace masks are given in \helpref{wxLogTrace}{wxlogtrace}
+The standard trace masks are given in \helpref{wxLogTrace}{wxlogtrace}
documentation.
Finally, the {\it wxLog::DoLog()} function automatically prepends a time stamp
to all the messages. The format of the time stamp may be changed: it can be
-any string with \% specificators fully described in the documentation of the
+any string with \% specifications fully described in the documentation of the
standard {\it strftime()} function. For example, the default format is
"[\%d/\%b/\%y \%H:\%M:\%S] " which gives something like "[17/Sep/98 22:10:16] "
(without quotes) for the current date. Setting an empty string as the time
{\bf NB:} Timestamping is disabled for Visual C++ users in debug builds by
default because otherwise it would be impossible to directly go to the line
from which the log message was generated by simply clicking in the debugger
-window on the corresponding error message. If you wish to enable it, please use
+window on the corresponding error message. If you wish to enable it, please use
\helpref{SetTimestamp}{wxlogsettimestamp} explicitly.
\helpref{AddTraceMask}{wxlogaddtracemask}\\
\helpref{RemoveTraceMask}{wxlogremovetracemask}\\
\helpref{ClearTraceMasks}{wxlogcleartracemasks}\\
+\helpref{GetTraceMasks}{wxloggettracemasks}\\
\helpref{IsAllowedTraceMask}{wxlogisallowedtracemask}\\
\helpref{SetVerbose}{wxlogsetverbose}\\
\helpref{GetVerbose}{wxloggetverbose}\\
\func{static void}{AddTraceMask}{\param{const wxString\& }{mask}}
-Add the {\it mask} to the list of allowed masks for
+Add the {\it mask} to the list of allowed masks for
\helpref{wxLogTrace}{wxlogtrace}.
-See also: \helpref{RemoveTraceMask}{wxlogremovetracemask}
+\wxheading{See also}
+
+\helpref{RemoveTraceMask}{wxlogremovetracemask}
+\helpref{GetTraceMasks}{wxloggettracemasks}
\membersection{wxLog::ClearTraceMasks}\label{wxlogcleartracemasks}
\func{static void}{ClearTraceMasks}{\void}
-Removes all trace masks previously set with
+Removes all trace masks previously set with
\helpref{AddTraceMask}{wxlogaddtracemask}.
-See also: \helpref{RemoveTraceMask}{wxlogremovetracemask}
+\wxheading{See also}
+
+\helpref{RemoveTraceMask}{wxlogremovetracemask}
+
+\membersection{wxLog::GetTraceMasks}\label{wxloggettracemasks}
+
+\func{static const wxArrayString \&}{GetTraceMasks}{\void}
+
+Returns the currently allowed list of string trace masks.
+
+\wxheading{See also}
+
+\helpref{AddTraceMask}{wxlogaddtracemask}.
\membersection{wxLog::OnLog}\label{wxlogonlog}
\func{static wxLog *}{SetActiveTarget}{\param{wxLog * }{ logtarget}}
Sets the specified log target as the active one. Returns the pointer to the
-previous active log target (may be NULL).
+previous active log target (may be NULL). To suppress logging use a new
+instance of wxLogNull not NULL. If the active log target is set to NULL a
+new default log target will be created when logging occurs.
\membersection{wxLog::Suspend}\label{wxlogsuspend}
called (the standard GUI log target only shows the log dialog when it is
flushed, so Suspend() works as expected with it).
-\wxheading{See also:}
+\wxheading{See also}
\helpref{Resume}{wxlogresume},\\
\helpref{wxLogNull}{wxlogoverview}
\func{static void}{Resume}{\void}
-Resumes logging previously suspended by a call to
+Resumes logging previously suspended by a call to
\helpref{Suspend}{wxlogsuspend}. All messages logged in the meanwhile will be
flushed soon.
generated it and {\it timestamp} is the moment when the message was generated.
The base class version prepends the timestamp to the message, adds a prefix
-corresponding to the log level and then calls
+corresponding to the log level and then calls
\helpref{DoLogString}{wxlogdologstring} with the resulting string.
\membersection{wxLog::DoLogString}\label{wxlogdologstring}
Called to log the specified string. The timestamp is already included into the
string but still passed to this function.
-A simple implementation may just send the string to {\tt stdout} or, better,
+A simple implementation may just send the string to {\tt stdout} or, better,
{\tt stderr}.
\membersection{wxLog::DontCreateOnDemand}\label{wxlogdontcreateondemand}
currently. (Almost) for internal use only: it is supposed to be called by the
application shutdown code.
-Note that this function also calls
+Note that this function also calls
\helpref{ClearTraceMasks}{wxlogcleartracemasks}.
\membersection{wxLog::Flush}\label{wxlogflush}
Flushes the current log target if any, does nothing if there is none.
-See also:
+\wxheading{See also}
\helpref{Flush}{wxlogflush}
-\membersection{wxLog::HasPendingMessages}\label{wxloghaspendingmessages}
-
-\constfunc{bool}{HasPendingMessages}{\void}
-
-Returns true if there are any messages in the buffer (not yet shown to the
-user). (Almost) for internal use only.
-
\membersection{wxLog::SetVerbose}\label{wxlogsetverbose}
-\func{static void}{SetVerbose}{\param{bool }{ verbose = TRUE}}
+\func{static void}{SetVerbose}{\param{bool }{ verbose = true}}
-Activates or desactivates verbose mode in which the verbose messages are
+Activates or deactivates verbose mode in which the verbose messages are
logged as the normal ones instead of being silently dropped.
\membersection{wxLog::GetVerbose}\label{wxloggetverbose}
Returns whether the verbose mode is currently active.
+\membersection{wxLog::SetLogLevel}\label{wxlogsetloglevel}
+
+\func{static void}{SetLogLevel}{\param{wxLogLevel }{ logLevel}}
+
+Specifies that log messages with $level > logLevel$ should be ignored
+and not sent to the active log target.
+
+\membersection{wxLog::GetLogLevel}\label{wxloggetloglevel}
+
+\func{static wxLogLevel}{GetLogLevel}{\void}
+
+Returns the current log level limit.
+
\membersection{wxLog::SetTimestamp}\label{wxlogsettimestamp}
\func{void}{SetTimestamp}{\param{const char * }{ format}}
\func{static bool}{IsAllowedTraceMask}{\param{const wxChar *}{mask}}
-Returns TRUE if the {\it mask} is one of allowed masks for
+Returns true if the {\it mask} is one of allowed masks for
\helpref{wxLogTrace}{wxlogtrace}.
-See also: \helpref{AddTraceMask}{wxlogaddtracemask},
+See also: \helpref{AddTraceMask}{wxlogaddtracemask},
\helpref{RemoveTraceMask}{wxlogremovetracemask}
\membersection{wxLog::RemoveTraceMask}\label{wxlogremovetracemask}
\func{static void}{RemoveTraceMask}{\param{const wxString\& }{mask}}
-Remove the {\it mask} from the list of allowed masks for
+Remove the {\it mask} from the list of allowed masks for
\helpref{wxLogTrace}{wxlogtrace}.
See also: \helpref{AddTraceMask}{wxlogaddtracemask}
\section{\class{wxLogChain}}\label{wxlogchain}
This simple class allows to chain log sinks, that is to install a new sink but
-keep passing log messages to the old one instead of replacing it completely as
+keep passing log messages to the old one instead of replacing it completely as
\helpref{SetActiveTarget}{wxlogsetactivetarget} does.
It is especially useful when you want to divert the logs somewhere (for
// all the log messages are sent to stderr and also processed as usually
...
-delete logChain;
+// don't delete logChain directly as this would leave a dangling
+// pointer as active log target, use SetActiveTarget() instead
+delete wxLog::SetActiveTarget(...something else or NULL...);
\end{verbatim}
\latexignore{\rtfignore{\wxheading{Members}}}
-\membersection{wxLogChain::wxLogChain}\label{wxlogchainwxlogchain}
+\membersection{wxLogChain::wxLogChain}\label{wxlogchainctor}
\func{}{wxLogChain}{\param{wxLog *}{logger}}
Sets the specified {\tt logger} (which may be {\tt NULL}) as the default log
target but the log messages are also passed to the previous log target if any.
-\membersection{wxLogChain::\destruct{wxLogChain}}
+\membersection{wxLogChain::\destruct{wxLogChain}}\label{wxlogchaindtor}
\func{}{\destruct{wxLogChain}}{\void}
\constfunc{bool}{IsPassingMessages}{\void}
-Returns {\tt TRUE} if the messages are passed to the previously active log
-target (default) or {\tt FALSE} if \helpref{PassMessages}{wxlogchainpassmessages}
+Returns {\tt true} if the messages are passed to the previously active log
+target (default) or {\tt false} if \helpref{PassMessages}{wxlogchainpassmessages}
had been called.
\membersection{wxLogChain::PassMessages}\label{wxlogchainpassmessages}
\func{void}{PassMessages}{\param{bool }{passMessages}}
By default, the log messages are passed to the previously active log target.
-Calling this function with {\tt FALSE} parameter disables this behaviour
+Calling this function with {\tt false} parameter disables this behaviour
(presumably temporarily, as you shouldn't use wxLogChain at all otherwise) and
it can be reenabled by calling it again with {\it passMessages} set to {\tt
-TRUE}.
+true}.
\membersection{wxLogChain::SetLog}\label{wxlogchainsetlog}
\func{void}{SetLog}{\param{wxLog *}{logger}}
Sets another log target to use (may be {\tt NULL}). The log target specified
-in the \helpref{constructor}{wxlogchainwxlogchain} or in a previous call to
+in the \helpref{constructor}{wxlogchainctor} or in a previous call to
this function is deleted.
This doesn't change the old log target value (the one the messages are
\section{\class{wxLogGui}}\label{wxloggui}
-This is the default log target for the GUI wxWindows applications. It is passed
+This is the default log target for the GUI wxWidgets applications. It is passed
to \helpref{wxLog::SetActiveTarget}{wxlogsetactivetarget} at the program
-startup and is deleted by wxWindows during the program shut down.
+startup and is deleted by wxWidgets during the program shut down.
\wxheading{Derived from}
\latexignore{\rtfignore{\wxheading{Members}}}
-\membersection{wxLogGui::wxLogGui}
+\membersection{wxLogGui::wxLogGui}\label{wxlogguictor}
\func{}{wxLogGui}{\void}
This class allows to temporarily suspend logging. All calls to the log
functions during the life time of an object of this class are just ignored.
-In particular, it can be used to suppress the log messages given by wxWindows
+In particular, it can be used to suppress the log messages given by wxWidgets
itself but it should be noted that it is rarely the best way to cope with this
problem as {\bf all} log messages are suppressed, even if they indicate a
completely different error than the one the programmer wanted to suppress.
wxLogMessage("..."); // ok
\end{verbatim}
-}
+}%
would be better written as:
...
}
\end{verbatim}
-}
+}%
\wxheading{Derived from}
\latexignore{\rtfignore{\wxheading{Members}}}
-\membersection{wxLogNull::wxLogNull}
+\membersection{wxLogNull::wxLogNull}\label{wxlognullctor}
\func{}{wxLogNull}{\void}
Suspends logging.
-\membersection{wxLogNull::\destruct{wxLogNull}}
+\membersection{wxLogNull::\destruct{wxLogNull}}\label{wxlognulldtor}
Resumes logging.
processing them itself.
Unlike \helpref{wxLogChain}{wxlogchain} which is usually used directly as is,
-this class must be derived from to implement \helpref{DoLog}{wxlogdolog}
+this class must be derived from to implement \helpref{DoLog}{wxlogdolog}
and/or \helpref{DoLogString}{wxlogdologstring} methods.
\wxheading{Derived from}
This class can be used to redirect the log messages to a C file stream (not to
be confused with C++ streams). It is the default log target for the non-GUI
-wxWindows applications which send all the output to {\tt stderr}.
+wxWidgets applications which send all the output to {\tt stderr}.
\wxheading{Derived from}
\latexignore{\rtfignore{\wxheading{Members}}}
-\membersection{wxLogStderr::wxLogStderr}
+\membersection{wxLogStderr::wxLogStderr}\label{wxlogstderrctor}
\func{}{wxLogStderr}{\param{FILE }{*fp = NULL}}
-Constructs a log target which sends all the log messages to the given
+Constructs a log target which sends all the log messages to the given
{\tt FILE}. If it is {\tt NULL}, the messages are sent to {\tt stderr}.
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% wxLogStream %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
This class can be used to redirect the log messages to a C++ stream.
-Please note that this class is only available if wxWindows was compiled with
+Please note that this class is only available if wxWidgets was compiled with
the standard iostream library support ({\tt wxUSE\_STD\_IOSTREAM} must be on).
\wxheading{Derived from}
\latexignore{\rtfignore{\wxheading{Members}}}
-\membersection{wxLogStream::wxLogStream}
+\membersection{wxLogStream::wxLogStream}\label{wxlogstreamctor}
\func{}{wxLogStream}{\param{std::ostream }{*ostr = NULL}}
-Constructs a log target which sends all the log messages to the given
+Constructs a log target which sends all the log messages to the given
output stream. If it is {\tt NULL}, the messages are sent to {\tt cerr}.
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% wxLogTextCtrl %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
\latexignore{\rtfignore{\wxheading{Members}}}
-\membersection{wxLogTextCtrl::wxLogTextCtrl}
+\membersection{wxLogTextCtrl::wxLogTextCtrl}\label{wxlogtextctrlctor}
\func{}{wxLogTextCtrl}{\param{wxTextCtrl }{*textctrl}}
\latexignore{\rtfignore{\wxheading{Members}}}
-\membersection{wxLogWindow::wxLogWindow}
+\membersection{wxLogWindow::wxLogWindow}\label{wxlogwindowctor}
-\func{}{wxLogWindow}{\param{wxFrame }{*parent}, \param{const wxChar }{*title}, \param{bool }{show = {\tt TRUE}}, \param{bool }{passToOld = {\tt TRUE}}}
+\func{}{wxLogWindow}{\param{wxFrame }{*parent}, \param{const wxChar }{*title}, \param{bool }{show = {\tt true}}, \param{bool }{passToOld = {\tt true}}}
Creates the log frame window and starts collecting the messages in it.
\docparam{title}{The title for the log frame}
-\docparam{show}{{\tt TRUE} to show the frame initially (default), otherwise
+\docparam{show}{{\tt true} to show the frame initially (default), otherwise
\helpref{wxLogWindow::Show}{wxlogwindowshow} must be called later.}
-\docparam{passToOld}{{\tt TRUE} to process the log messages normally in addition to
-logging them in the log frame (default), {\tt FALSE} to only log them in the
+\docparam{passToOld}{{\tt true} to process the log messages normally in addition to
+logging them in the log frame (default), {\tt false} to only log them in the
log frame.}
\membersection{wxLogWindow::Show}\label{wxlogwindowshow}
-\func{void}{Show}{\param{bool }{show = {\tt TRUE}}}
+\func{void}{Show}{\param{bool }{show = {\tt true}}}
Shows or hides the frame.
-\membersection{wxLogWindow::GetFrame}
+\membersection{wxLogWindow::GetFrame}\label{wxlogwindowgetframe}
\constfunc{wxFrame *}{GetFrame}{\void}
Returns the associated log frame window. This may be used to position or resize
it but use \helpref{wxLogWindow::Show}{wxlogwindowshow} to show or hide it.
-\membersection{wxLogWindow::OnFrameCreate}
+\membersection{wxLogWindow::OnFrameCreate}\label{wxlogwindowonframecreate}
\func{virtual void}{OnFrameCreate}{\param{wxFrame }{*frame}}
\membersection{wxLogWindow::OnFrameClose}\label{wxlogwindowonframeclose}
-\func{virtual void}{OnFrameClose}{\param{wxFrame }{*frame}}
+\func{virtual bool}{OnFrameClose}{\param{wxFrame }{*frame}}
Called if the user closes the window interactively, will not be
called if it is destroyed for another reason (such as when program
exits).
-Return {\tt TRUE} from here to allow the frame to close, {\tt FALSE} to
+Return {\tt true} from here to allow the frame to close, {\tt false} to
prevent this from happening.
\wxheading{See also}
projects / wxWidgets.git / blobdiff