/////////////////////////////////////////////////////////////////////////////
// Name: log.h
-// Purpose: documentation for wxLogWindow class
+// Purpose: interface of wxLogWindow
// Author: wxWidgets team
// RCS-ID: $Id$
// Licence: wxWindows license
@library{wxbase}
@category{logging}
- @seealso
- wxLogTextCtrl
+ @see wxLogTextCtrl
*/
class wxLogWindow : public wxLogInterposer
{
public:
/**
Creates the log frame window and starts collecting the messages in it.
-
+
@param parent
The parent window for the log frame, may be @NULL
@param title
Returns the associated log frame window. This may be used to position or resize
it but use Show() to show or hide it.
*/
- wxFrame* GetFrame();
+ wxFrame* GetFrame() const;
/**
Called if the user closes the window interactively, will not be
exits).
Return @true from here to allow the frame to close, @false to
prevent this from happening.
-
+
@see OnFrameDelete()
*/
virtual bool OnFrameClose(wxFrame frame);
};
+
/**
@class wxLogInterposerTemp
@wxheader{log.h}
};
+
/**
@class wxLogChain
@wxheader{log.h}
/**
Returns the pointer to the previously active log target (which may be @NULL).
*/
- wxLog* GetOldLog();
+ wxLog* GetOldLog() const;
/**
Returns @true if the messages are passed to the previously active log
target (default) or @false if PassMessages()
had been called.
*/
- bool IsPassingMessages();
+ bool IsPassingMessages() const;
/**
By default, the log messages are passed to the previously active log target.
};
+
/**
@class wxLogGui
@wxheader{log.h}
};
+
/**
@class wxLogStream
@wxheader{log.h}
@library{wxbase}
@category{logging}
- @seealso
- wxLogStderr, wxStreamToTextRedirector
+ @see wxLogStderr, wxStreamToTextRedirector
*/
class wxLogStream : public wxLog
{
};
+
/**
@class wxLogStderr
@wxheader{log.h}
@library{wxbase}
@category{logging}
- @seealso
- wxLogStream
+ @see wxLogStream
*/
class wxLogStderr : public wxLog
{
};
+
/**
@class wxLogBuffer
@wxheader{log.h}
};
+
/**
@class wxLogInterposer
@wxheader{log.h}
};
+
/**
@class wxLogTextCtrl
@wxheader{log.h}
@library{wxbase}
@category{logging}
- @seealso
- wxTextCtrl, wxStreamToTextRedirector
+ @see wxTextCtrl, wxStreamToTextRedirector
*/
class wxLogTextCtrl : public wxLog
{
};
+
/**
@class wxLog
@wxheader{log.h}
@library{wxcore}
@category{logging}
- @seealso
- wxLog::RemoveTraceMask, wxLog::GetTraceMasks
+ @see wxLog::RemoveTraceMask, wxLog::GetTraceMasks
*/
class wxLog
{
public:
/**
Add the @a mask to the list of allowed masks for
- wxLogTrace.
-
+ wxLogTrace().
+
@see RemoveTraceMask(), GetTraceMasks()
*/
static void AddTraceMask(const wxString& mask);
/**
Removes all trace masks previously set with
AddTraceMask().
-
+
@see RemoveTraceMask()
*/
static void ClearTraceMasks();
without writing a new log target class (which, aside of being a matter of
several minutes, allows you to do anything you want).
The verbose messages are the trace messages which are not disabled in the
- release mode and are generated by wxLogVerbose. They
+ release mode and are generated by wxLogVerbose(). They
are not normally shown to the user because they present little interest, but
may be activated, for example, in order to help the user find some program
problem.
the (application global) @e trace mask. There are two ways to specify it:
either by using SetTraceMask() and
GetTraceMask() and using
- wxLogTrace which takes an integer mask or by using
+ wxLogTrace() which takes an integer mask or by using
AddTraceMask() for string trace masks.
The difference between bit-wise and string trace masks is that a message using
integer trace mask will only be logged if all bits of the mask are set in the
current mask while a message using string mask will be logged simply if the
mask had been added before to the list of allowed ones.
For example,
-
+
will do something only if the current trace mask contains both
@c wxTraceRefCount and @c wxTraceOle, but
-
+
will log the message if it was preceded by
-
+
Using string masks is simpler and allows to easily add custom ones, so this is
the preferred way of working with trace messages. The integer trace mask is
kept for compatibility and for additional (but very rarely needed) flexibility
only.
- The standard trace masks are given in wxLogTrace
+ The standard trace masks are given in wxLogTrace()
documentation.
Finally, the @e wxLog::DoLog() function automatically prepends a time stamp
to all the messages. The format of the time stamp may be changed: it can be
window on the corresponding error message. If you wish to enable it, please use
SetTimestamp() explicitly.
AddTraceMask()
-
+
RemoveTraceMask()
-
+
ClearTraceMasks()
-
+
GetTraceMasks()
-
+
IsAllowedTraceMask()
-
+
SetVerbose()
-
+
GetVerbose()
-
+
SetTimestamp()
-
+
GetTimestamp()
-
+
SetTraceMask()
-
+
GetTraceMask()
-
+
SetRepetitionCounting()
-
+
GetRepetitionCounting()
*/
/**
Flushes the current log target if any, does nothing if there is none.
-
+
@see Flush()
*/
static void FlushActive();
/**
Returns the currently allowed list of string trace masks.
-
+
@see AddTraceMask().
*/
static const wxArrayString GetTraceMasks();
only useful when the application is terminating and shouldn't be used in other
situations because it may easily lead to a loss of messages.
OnLog()
-
+
GetActiveTarget()
-
+
SetActiveTarget()
-
+
DontCreateOnDemand()
-
+
Suspend()
-
+
Resume()
*/
/**
Returns @true if the @a mask is one of allowed masks for
- wxLogTrace.
+ wxLogTrace().
See also: AddTraceMask(),
RemoveTraceMask()
*/
Flush() shows them all and clears the buffer contents.
This function doesn't do anything if the buffer is already empty.
Flush()
-
+
FlushActive()
*/
/**
Remove the @a mask from the list of allowed masks for
- wxLogTrace.
+ wxLogTrace().
See also: AddTraceMask()
*/
static void RemoveTraceMask(const wxString& mask);
logging immediately without waiting for Flush() to be
called (the standard GUI log target only shows the log dialog when it is
flushed, so Suspend() works as expected with it).
-
+
@see Resume(), wxLogNull
*/
static void Suspend();
};
+
/**
@class wxLogNull
@wxheader{log.h}
};
+
// ============================================================================
// Global functions/macros
// ============================================================================
call even before the application has been initialized or if it is currently in
some other strange state (for example, about to crash). Under Windows this
function shows a message box using a native dialog instead of
- wxMessageBox (which might be unsafe to call), elsewhere
+ wxMessageBox() (which might be unsafe to call), elsewhere
it simply prints the message to the standard output using the title as prefix.
@param title
@param text
The text to show to the user
- @see wxLogFatalError
+ @see wxLogFatalError()
*/
void wxSafeShowMessage(const wxString& title,
const wxString& text);
+
+
+//@{
+/**
+ For all normal, informational messages. They also appear in a message box by
+ default (but it can be changed).
+*/
+void wxLogMessage(const char* formatString, ... );
+void wxVLogMessage(const char* formatString, va_list argPtr);
+//@}
+
+//@{
+/**
+ For verbose output. Normally, it is suppressed, but
+ might be activated if the user wishes to know more details about the program
+ progress (another, but possibly confusing name for the same function is @b
+ wxLogInfo).
+*/
+void wxLogVerbose(const char* formatString, ... );
+void wxVLogVerbose(const char* formatString, va_list argPtr);
+//@}
+
+//@{
+/**
+ For warnings - they are also normally shown to the user, but don't interrupt
+ the program work.
+*/
+void wxLogWarning(const char* formatString, ... );
+void wxVLogWarning(const char* formatString, va_list argPtr);
+//@}
+
+//@{
+/**
+ Like wxLogError(), but also
+ terminates the program with the exit code 3. Using @e abort() standard
+ function also terminates the program with this exit code.
+*/
+void wxLogFatalError(const char* formatString, ... );
+void wxVLogFatalError(const char* formatString,
+ va_list argPtr);
+//@}
+
+//@{
+/**
+ The functions to use for error messages, i.e. the messages that must be shown
+ to the user. The default processing is to pop up a message box to inform the
+ user about it.
+*/
+void wxLogError(const char* formatString, ... );
+void wxVLogError(const char* formatString, va_list argPtr);
+//@}
+
+
+//@{
+/**
+ As @b wxLogDebug, trace functions only do something in debug build and
+ expand to nothing in the release one. The reason for making
+ it a separate function from it is that usually there are a lot of trace
+ messages, so it might make sense to separate them from other debug messages.
+ The trace messages also usually can be separated into different categories and
+ the second and third versions of this function only log the message if the
+ @a mask which it has is currently enabled in wxLog. This
+ allows to selectively trace only some operations and not others by changing
+ the value of the trace mask (possible during the run-time).
+ For the second function (taking a string mask), the message is logged only if
+ the mask has been previously enabled by the call to
+ wxLog::AddTraceMask or by setting
+ @ref overview_envvars "@c WXTRACE environment variable".
+ The predefined string trace masks
+ used by wxWidgets are:
+ wxTRACE_MemAlloc: trace memory allocation (new/delete)
+ wxTRACE_Messages: trace window messages/X callbacks
+ wxTRACE_ResAlloc: trace GDI resource allocation
+ wxTRACE_RefCount: trace various ref counting operations
+ wxTRACE_OleCalls: trace OLE method calls (Win32 only)
+ @b Caveats: since both the mask and the format string are strings,
+ this might lead to function signature confusion in some cases:
+ if you intend to call the format string only version of wxLogTrace,
+ then add a %s format string parameter and then supply a second string parameter
+ for that %s, the string mask version of wxLogTrace will erroneously get called instead, since you are supplying two string parameters to the function.
+ In this case you'll unfortunately have to avoid having two leading
+ string parameters, e.g. by adding a bogus integer (with its %d format string).
+ The third version of the function only logs the message if all the bits
+ corresponding to the @a mask are set in the wxLog trace mask which can be
+ set by wxLog::SetTraceMask. This version is less
+ flexible than the previous one because it doesn't allow defining the user
+ trace masks easily - this is why it is deprecated in favour of using string
+ trace masks.
+ wxTraceMemAlloc: trace memory allocation (new/delete)
+ wxTraceMessages: trace window messages/X callbacks
+ wxTraceResAlloc: trace GDI resource allocation
+ wxTraceRefCount: trace various ref counting operations
+ wxTraceOleCalls: trace OLE method calls (Win32 only)
+*/
+void wxLogTrace(const char* formatString, ... );
+void wxVLogTrace(const char* formatString, va_list argPtr);
+void wxLogTrace(const char* mask, const char* formatString,
+ ... );
+void wxVLogTrace(const char* mask,
+ const char* formatString,
+ va_list argPtr);
+void wxLogTrace(wxTraceMask mask, const char* formatString,
+ ... );
+void wxVLogTrace(wxTraceMask mask, const char* formatString,
+ va_list argPtr);
+//@}
+
+
+//@{
+/**
+ The right functions for debug output. They only do something in debug
+ mode (when the preprocessor symbol __WXDEBUG__ is defined) and expand to
+ nothing in release mode (otherwise).
+*/
+void wxLogDebug(const char* formatString, ... );
+void wxVLogDebug(const char* formatString, va_list argPtr);
+//@}
+
+
+//@{
+/**
+ Messages logged by these functions will appear in the statusbar of the @a frame
+ or of the top level application window by default (i.e. when using
+ the second version of the functions).
+ If the target frame doesn't have a statusbar, the message will be lost.
+*/
+void wxLogStatus(wxFrame* frame, const char* formatString,
+ ... );
+void wxVLogStatus(wxFrame* frame, const char* formatString,
+ va_list argPtr);
+void wxLogStatus(const char* formatString, ... );
+void wxVLogStatus(const char* formatString, va_list argPtr);
+//@}
+
+
+//@{
+/**
+ Mostly used by wxWidgets itself, but might be handy for logging errors after
+ system call (API function) failure. It logs the specified message text as well
+ as the last system error code (@e errno or @e ::GetLastError() depending
+ on the platform) and the corresponding error message. The second form
+ of this function takes the error code explicitly as the first argument.
+
+ @see wxSysErrorCode(), wxSysErrorMsg()
+*/
+void wxLogSysError(const char* formatString, ... );
+void wxVLogSysError(const char* formatString,
+ va_list argPtr);
+//@}
+
+
+/**
+ Returns the error code from the last system call. This function uses
+ @c errno on Unix platforms and @c GetLastError under Win32.
+
+ @see wxSysErrorMsg(), wxLogSysError()
+*/
+unsigned long wxSysErrorCode();
+
+
+/**
+ Returns the error message corresponding to the given system error code. If
+ @a errCode is 0 (default), the last error code (as returned by
+ wxSysErrorCode()) is used.
+
+ @see wxSysErrorCode(), wxLogSysError()
+*/
+const wxChar* wxSysErrorMsg(unsigned long errCode = 0);
+
+
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