changed exceptions handling to work under wxGTK

[wxWidgets.git] / docs / latex / wx / function.tex

diff --git a/docs/latex/wx/function.tex b/docs/latex/wx/function.tex
index f9741e745bc41dbcc37cea8888b2a36d27f4bdb0..ac1fc9f3be2c128087a67d2c044dd0f5eb1196fb 100644 (file)
--- a/docs/latex/wx/function.tex
+++ b/docs/latex/wx/function.tex
@@ -164,6 +164,7 @@ the corresponding topic.
 \helpref{wxIsNaN}{wxisnan}\\
 \helpref{wxIsWild}{wxiswild}\\
 \helpref{wxKill}{wxkill}\\
 \helpref{wxIsNaN}{wxisnan}\\
 \helpref{wxIsWild}{wxiswild}\\
 \helpref{wxKill}{wxkill}\\

+\helpref{wxLaunchDefaultBrowser}{wxlaunchdefaultbrowser}\\

 \helpref{wxLEAVE\_CRIT\_SECT}{wxleavecritsect}\\
 \helpref{wxLoadUserResource}{wxloaduserresource}\\
 \helpref{wxLogDebug}{wxlogdebug}\\
 \helpref{wxLEAVE\_CRIT\_SECT}{wxleavecritsect}\\
 \helpref{wxLoadUserResource}{wxloaduserresource}\\
 \helpref{wxLogDebug}{wxlogdebug}\\


@@ -188,6 +189,8 @@ the corresponding topic.
 \helpref{wxNewId}{wxnewid}\\
 \helpref{wxNow}{wxnow}\\
 \helpref{wxOnAssert}{wxonassert}\\
 \helpref{wxNewId}{wxnewid}\\
 \helpref{wxNow}{wxnow}\\
 \helpref{wxOnAssert}{wxonassert}\\

+\helpref{wxON\_BLOCK\_EXIT}{wxonblockexit}\\
+\helpref{wxON\_BLOCK\_EXIT\_OBJ}{wxonblockexitobj}\\

 \helpref{wxOpenClipboard}{wxopenclipboard}\\
 \helpref{wxParseCommonDialogsFilter}{wxparsecommondialogsfilter}\\
 \helpref{wxDirExists}{functionwxdirexists}\\
 \helpref{wxOpenClipboard}{wxopenclipboard}\\
 \helpref{wxParseCommonDialogsFilter}{wxparsecommondialogsfilter}\\
 \helpref{wxDirExists}{functionwxdirexists}\\


@@ -250,6 +253,7 @@ the corresponding topic.
 \helpref{wx\_reinterpret\_cast}{wxreinterpretcastraw}\\
 \helpref{wx\_static\_cast}{wxstaticcastraw}\\
 \helpref{\_}{underscore}\\
 \helpref{wx\_reinterpret\_cast}{wxreinterpretcastraw}\\
 \helpref{wx\_static\_cast}{wxstaticcastraw}\\
 \helpref{\_}{underscore}\\

+\helpref{wxPLURAL}{wxplural}\\

 \helpref{\_T}{underscoret}
 
 
 \helpref{\_T}{underscoret}
 
 


@@ -435,7 +439,7 @@ This function is used in wxBase only and only if you don't create
 \helpref{wxApp}{wxapp} object at all. In this case you must call it from your
 {\tt main()} function before calling any other wxWidgets functions.
 
 \helpref{wxApp}{wxapp} object at all. In this case you must call it from your
 {\tt main()} function before calling any other wxWidgets functions.
 

-If the function returns {\tt false} the initialization could not be performed,
+If the function returns \false the initialization could not be performed,

 in this case the library cannot be used and
 \helpref{wxUninitialize}{wxuninitialize} shouldn't be called neither.
 
 in this case the library cannot be used and
 \helpref{wxUninitialize}{wxuninitialize} shouldn't be called neither.
 


@@ -740,7 +744,7 @@ and that this function is only implemented under Unix and Win32.
 
 \wxheading{Returns}
 
 
 \wxheading{Returns}
 

-{\tt true} on success, {\tt false} if an error occured.
+\true on success, \false if an error occurred.

 
 \wxheading{Include files}
 
 
 \wxheading{Include files}
 


@@ -841,7 +845,7 @@ This macro is equivalent to \helpref{cs.Enter()}{wxcriticalsectionenter} if
 
 \func{bool}{wxIsMainThread}{\void}
 
 
 \func{bool}{wxIsMainThread}{\void}
 

-Returns {\tt true} if this thread is the main one. Always returns {\tt true} if
+Returns \true if this thread is the main one. Always returns \true if

 {\tt wxUSE\_THREADS} is $0$.
 
 
 {\tt wxUSE\_THREADS} is $0$.
 
 


@@ -935,6 +939,8 @@ Returns true if the file exists and is a plain file.
 
 Returns time of last modification of given file.
 
 
 Returns time of last modification of given file.
 

+The return value is $0$ if an error occured (e.g. file not found).
+

 
 \membersection{::wxFileNameFromPath}\label{wxfilenamefrompath}
 
 
 \membersection{::wxFileNameFromPath}\label{wxfilenamefrompath}
 


@@ -960,7 +966,7 @@ parent directory "..".
 
 \wxheading{Warning}
 
 
 \wxheading{Warning}
 

-As of wx 2.5.2, these functions are not thread-safe! (use static variables)
+As of wx 2.5.2, these functions are not thread-safe! (they use static variables). You probably want to use \helpref{wxDir::GetFirst}{wxdirgetfirst} or \helpref{wxDirTraverser}{wxdirtraverser} instead.

 
 {\it spec} may contain wildcards.
 
 
 {\it spec} may contain wildcards.
 


@@ -998,7 +1004,7 @@ information is not needed.
 
 \wxheading{Returns}
 
 
 \wxheading{Returns}
 

-{\tt true} on success, {\tt false} if an error occured (for example, the
+\true on success, \false if an error occurred (for example, the

 directory doesn't exist).
 
 \wxheading{Portability}
 directory doesn't exist).
 
 \wxheading{Portability}


@@ -1460,8 +1466,8 @@ is running, the entry {\bf Current} in the section {\bf User} of
 the PENWIN.INI file is used.
 
 The first variant of this function returns the user name if successful or an
 the PENWIN.INI file is used.
 
 The first variant of this function returns the user name if successful or an

-empty string otherwise. The second (deprecated) function returns {\tt true}
-if successful, {\tt false} otherwise.
+empty string otherwise. The second (deprecated) function returns \true
+if successful, \false otherwise.

 
 \wxheading{See also}
 
 
 \wxheading{See also}
 


@@ -1503,23 +1509,33 @@ as wxGetTranslation.
 
 The second form is used when retrieving translation of string that has
 different singular and plural form in English or different plural forms in some
 
 The second form is used when retrieving translation of string that has
 different singular and plural form in English or different plural forms in some

-other language. It takes two extra arguments: \arg{str}
-parameter must contain the singular form of the string to be converted.
-It is also used as the key for the search in the catalog.
-The \arg{strPlural} parameter is the plural form (in English).
-The parameter \arg{n} is used to determine the plural form.  If no
-message catalog is found \arg{str} is returned if `n == 1',
+other language. It takes two extra arguments: as above, \arg{str} 
+parameter must contain the singular form of the string to be converted and
+is used as the key for the search in the catalog. The \arg{strPlural} parameter
+is the plural form (in English). The parameter \arg{n} is used to determine the
+plural form.  If no message catalog is found \arg{str} is returned if `n == 1',

 otherwise \arg{strPlural}.
 otherwise \arg{strPlural}.

-See \urlref{GNU gettext manual}{http://www.gnu.org/manual/gettext/html\_chapter/gettext\_10.html\#SEC150} for additional information on plural forms handling.
+
+See \urlref{GNU gettext manual}{http://www.gnu.org/manual/gettext/html\_chapter/gettext\_10.html\#SEC150} 
+for additional information on plural forms handling. For a shorter alternative
+see the \helpref{wxPLURAL()}{wxplural} macro.

 
 Both versions call \helpref{wxLocale::GetString}{wxlocalegetstring}.
 
 
 Both versions call \helpref{wxLocale::GetString}{wxlocalegetstring}.
 

+Note that this function is not suitable for literal strings in Unicode
+builds, since the literal strings must be enclosed into 
+\helpref{\_T()}{underscoret} or \helpref{wxT}{wxt} macro which makes them
+unrecognised by \texttt{xgettext}, and so they are not extracted to the message
+catalog. Instead, use the \helpref{\_()}{underscore} and 
+\helpref{wxPLURAL}{wxplural} macro for all literal strings.
+
+

 \membersection{::wxIsEmpty}\label{wxisempty}
 
 \func{bool}{wxIsEmpty}{\param{const char *}{ p}}
 
 \membersection{::wxIsEmpty}\label{wxisempty}
 
 \func{bool}{wxIsEmpty}{\param{const char *}{ p}}
 

-Returns {\tt true} if the pointer is either {\tt NULL} or points to an empty
-string, {\tt false} otherwise.
+Returns \true if the pointer is either {\tt NULL} or points to an empty
+string, \false otherwise.

 
 
 \membersection{::wxStrcmp}\label{wxstrcmp}
 
 
 \membersection{::wxStrcmp}\label{wxstrcmp}


@@ -1551,8 +1567,8 @@ case-sensitive comparison.
 
 {\bf NB:} This function is obsolete, use \helpref{wxString::Find}{wxstringfind} instead.
 
 
 {\bf NB:} This function is obsolete, use \helpref{wxString::Find}{wxstringfind} instead.
 

-Returns {\tt true} if the substring {\it s1} is found within {\it s2},
-ignoring case if {\it exact} is false. If {\it subString} is {\tt false},
+Returns \true if the substring {\it s1} is found within {\it s2},
+ignoring case if {\it exact} is false. If {\it subString} is \false,

 no substring matching is done.
 
 
 no substring matching is done.
 
 


@@ -1687,6 +1703,14 @@ the string for the current locale during execution.
 Don't confuse this macro with \helpref{\_T()}{underscoret}!
 
 
 Don't confuse this macro with \helpref{\_T()}{underscoret}!
 
 

+\membersection{wxPLURAL}\label{wxplural}
+
+\func{const wxChar *}{wxPLURAL}{\param{const char *}{sing}, \param{const char *}{plur}, \param{size\_t}{n}}
+
+This macro is identical to \helpref{\_()}{underscore} but for the plural variant
+of \helpref{wxGetTranslation}{wxgettranslation}.
+
+

 \membersection{\_T}\label{underscoret}
 
 \func{wxChar}{\_T}{\param{char }{ch}}
 \membersection{\_T}\label{underscoret}
 
 \func{wxChar}{\_T}{\param{char }{ch}}


@@ -2729,6 +2753,48 @@ Generates an integer identifier unique to this run of the program.
 <wx/utils.h>
 
 
 <wx/utils.h>
 
 

+\membersection{wxON\_BLOCK\_EXIT}\label{wxonblockexit}
+
+\func{}{wxON\_BLOCK\_EXIT0}{\param{}{func}}
+\func{}{wxON\_BLOCK\_EXIT1}{\param{}{func}, \param{}{p1}}
+\func{}{wxON\_BLOCK\_EXIT2}{\param{}{func}, \param{}{p1}, \param{}{p2}}
+
+This family of macros allows to ensure that the global function \arg{func}
+with 0, 1, 2 or more parameters (up to some implementaton-defined limit) is
+executed on scope exit, whether due to a normal function return or because an
+exception has been thrown. A typical example of its usage:
+\begin{verbatim}
+    void *buf = malloc(size);
+    wxON_BLOCK_EXIT1(free, buf);
+\end{verbatim}
+
+Please see the original article by Andrei Alexandrescu and Petru Marginean
+published in December 2000 issue of \emph{C/C++ Users Journal} for more
+details.
+
+\wxheading{Include files}
+
+<wx/scopeguard.h>
+
+\wxheading{See also}
+
+\helpref{wxON\_BLOCK\_EXIT\_OBJ}{wxonblockexitobj}
+
+
+\membersection{wxON\_BLOCK\_EXIT\_OBJ}\label{wxonblockexitobj}
+
+\func{}{wxON\_BLOCK\_EXIT\_OBJ0}{\param{}{obj}, \param{}{method}}
+\func{}{wxON\_BLOCK\_EXIT\_OBJ1}{\param{}{obj}, \param{}{method}, \param{}{p1}}
+\func{}{wxON\_BLOCK\_EXIT\_OBJ2}{\param{}{obj}, \param{}{method}, \param{}{p1}, \param{}{p2}}
+
+This family of macros is similar to \helpref{wxON\_BLOCK\_EXIT}{wxonblockexit} 
+but calls a method of the given object instead of a free function.
+
+\wxheading{Include files}
+
+<wx/scopeguard.h>
+
+

 \membersection{::wxRegisterId}\label{wxregisterid}
 
 \func{void}{wxRegisterId}{\param{long}{ id}}
 \membersection{::wxRegisterId}\label{wxregisterid}
 
 \func{void}{wxRegisterId}{\param{long}{ id}}


@@ -2978,6 +3044,18 @@ frame or dialog containing it, or {\tt NULL}.
 <wx/window.h>
 
 
 <wx/window.h>
 
 

+\membersection{::wxLaunchDefaultBrowser}\label{wxlaunchdefaultbrowser}
+
+\func{bool}{wxLaunchDefaultBrowser}{\param{const wxString\& }{sUrl}}
+
+Launches the user's default browser and tells it to open the location at {\tt sUrl}.
+
+Returns true if the application was successfully launched.
+
+\wxheading{Include files}
+
+<wx/utils.h>
+

 \membersection{::wxLoadUserResource}\label{wxloaduserresource}
 
 \func{wxString}{wxLoadUserResource}{\param{const wxString\& }{resourceName}, \param{const wxString\& }{resourceType=``TEXT"}}
 \membersection{::wxLoadUserResource}\label{wxloaduserresource}
 
 \func{wxString}{wxLoadUserResource}{\param{const wxString\& }{resourceName}, \param{const wxString\& }{resourceType=``TEXT"}}


@@ -3290,8 +3368,11 @@ dynamically. The same as DECLARE\_ABSTRACT\_CLASS.
 
 \func{}{DECLARE\_DYNAMIC\_CLASS}{className}
 
 
 \func{}{DECLARE\_DYNAMIC\_CLASS}{className}
 

-Used inside a class declaration to declare that the objects of this class should be dynamically
-creatable from run-time type information.
+Used inside a class declaration to make the class known to wxWidgets RTTI
+system and also declare that the objects of this class should be dynamically
+creatable from run-time type information. Notice that this implies that the
+class should have a default constructor, if this is not the case consider using 
+\helpref{DECLARE\_CLASS}{declareclass}.

 
 Example:
 
 
 Example:
 


@@ -4336,7 +4417,7 @@ Returns the current value of the environment variable {\it var} in {\it value}.
 {\it value} may be {\tt NULL} if you just want to know if the variable exists
 and are not interested in its value.
 
 {\it value} may be {\tt NULL} if you just want to know if the variable exists
 and are not interested in its value.
 

-Returns {\tt true} if the variable exists, {\tt false} otherwise.
+Returns \true if the variable exists, \false otherwise.

 
 
 \membersection{wxSetEnv}\label{wxsetenv}
 
 
 \membersection{wxSetEnv}\label{wxsetenv}


@@ -4346,7 +4427,7 @@ Returns {\tt true} if the variable exists, {\tt false} otherwise.
 Sets the value of the environment variable {\it var} (adding it if necessary)
 to {\it value}.
 
 Sets the value of the environment variable {\it var} (adding it if necessary)
 to {\it value}.
 

-Returns {\tt true} on success.
+Returns \true on success.

 
 
 \membersection{wxUnsetEnv}\label{wxunsetenv}
 
 
 \membersection{wxUnsetEnv}\label{wxunsetenv}


@@ -4357,5 +4438,5 @@ Removes the variable {\it var} from the environment.
 \helpref{wxGetEnv}{wxgetenv} will return {\tt NULL} after the call to this
 function.
 
 \helpref{wxGetEnv}{wxgetenv} will return {\tt NULL} after the call to this
 function.
 

-Returns {\tt true} on success.
+Returns \true on success.