\membersection{Logging functions}
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
{\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}\\
\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}.
\wxheading{See also}
\func{static void}{ClearTraceMasks}{\void}
-Removes all trace masks previously set with
+Removes all trace masks previously set with
\helpref{AddTraceMask}{wxlogaddtracemask}.
\wxheading{See also}
\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}
\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 deactivates verbose mode in which the verbose messages are
logged as the normal ones instead of being silently dropped.
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}
\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}
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}
\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 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
\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 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
\membersection{wxLogWindow::wxLogWindow}
-\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.
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