X-Git-Url: https://git.saurik.com/wxWidgets.git/blobdiff_plain/0912690b65b3c58c0e12870fb971675ca5572ae6..e6d5afb5b95c2a814f2c3d101516210093dbe781:/docs/latex/wx/function.tex diff --git a/docs/latex/wx/function.tex b/docs/latex/wx/function.tex index c6808d5e65..ac1fc9f3be 100644 --- a/docs/latex/wx/function.tex +++ b/docs/latex/wx/function.tex @@ -60,7 +60,6 @@ the corresponding topic. \helpref{wxDDEInitialize}{wxddeinitialize}\\ \helpref{wxDROP\_ICON}{wxdropicon}\\ \helpref{wxDebugMsg}{wxdebugmsg}\\ -\helpref{wxDirExists}{functionwxdirexists}\\ \helpref{wxDirSelector}{wxdirselector}\\ \helpref{wxDisplayDepth}{wxdisplaydepth}\\ \helpref{wxDisplaySize}{wxdisplaysize}\\ @@ -165,6 +164,7 @@ the corresponding topic. \helpref{wxIsNaN}{wxisnan}\\ \helpref{wxIsWild}{wxiswild}\\ \helpref{wxKill}{wxkill}\\ +\helpref{wxLaunchDefaultBrowser}{wxlaunchdefaultbrowser}\\ \helpref{wxLEAVE\_CRIT\_SECT}{wxleavecritsect}\\ \helpref{wxLoadUserResource}{wxloaduserresource}\\ \helpref{wxLogDebug}{wxlogdebug}\\ @@ -189,8 +189,11 @@ the corresponding topic. \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{wxPathOnly}{wxpathonly}\\ \helpref{wxPostDelete}{wxpostdelete}\\ \helpref{wxPostEvent}{wxpostevent}\\ @@ -250,6 +253,7 @@ the corresponding topic. \helpref{wx\_reinterpret\_cast}{wxreinterpretcastraw}\\ \helpref{wx\_static\_cast}{wxstaticcastraw}\\ \helpref{\_}{underscore}\\ +\helpref{wxPLURAL}{wxplural}\\ \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. -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. @@ -740,7 +744,7 @@ and that this function is only implemented under Unix and Win32. \wxheading{Returns} -{\tt true} on success, {\tt false} if an error occured. +\true on success, \false if an error occurred. \wxheading{Include files} @@ -841,7 +845,7 @@ This macro is equivalent to \helpref{cs.Enter()}{wxcriticalsectionenter} if \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 $0$. @@ -914,13 +918,6 @@ threads. \helpref{wxFileName}{wxfilename} -\membersection{::wxDirExists}\label{functionwxdirexists} - -\func{bool}{wxDirExists}{\param{const wxString\& }{dirname}} - -Returns true if the directory exists. - - \membersection{::wxDos2UnixFilename}\label{wxdos2unixfilename} \func{void}{wxDos2UnixFilename}{\param{wxChar *}{s}} @@ -942,6 +939,8 @@ Returns true if the file exists and is a plain 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} @@ -967,7 +966,7 @@ parent directory "..". \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. @@ -1005,7 +1004,7 @@ information is not needed. \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} @@ -1055,6 +1054,13 @@ Returns true if the argument is an absolute filename, i.e. with a slash or drive name at the beginning. +\membersection{::wxDirExists}\label{functionwxdirexists} + +\func{bool}{wxDirExists}{\param{const wxString\& }{dirname}} + +Returns true if the path exists. + + \membersection{::wxPathOnly}\label{wxpathonly} \func{wxString}{wxPathOnly}{\param{const wxString\& }{path}} @@ -1388,10 +1394,13 @@ Both {\it major} and {\it minor} have to be looked at as hexadecimal numbers. So \twocolitem{Motif}{Return value is wxMOTIF\_X, {\it major} is X version, {\it minor} is X revision.} \twocolitem{OS/2}{Return value is wxOS2\_PM.} \twocolitem{Windows 3.1}{Return value is wxWINDOWS, {\it major} is 3, {\it minor} is 1.} -\twocolitem{Windows NT/2000}{Return value is wxWINDOWS\_NT, version is returned in {\it major} and {\it minor}} +\twocolitem{Windows NT/2000}{Return value is wxWINDOWS\_NT, version is returned in {\it major} and {\it minor}.} \twocolitem{Windows 98}{Return value is wxWIN95, {\it major} is 4, {\it minor} is 1 or greater.} \twocolitem{Windows 95}{Return value is wxWIN95, {\it major} is 4, {\it minor} is 0.} \twocolitem{Win32s (Windows 3.1)}{Return value is wxWIN32S, {\it major} is 3, {\it minor} is 1.} +\twocolitem{Windows PocketPC}{Return value is wxWINDOWS\_POCKETPC, version is returned in {\it major} and {\it minor}.} +\twocolitem{Windows Smartphone}{Return value is wxWINDOWS\_SMARTPHONE, version is returned in {\it major} and {\it minor}.} +\twocolitem{Windows CE (non-specific)}{Return value is wxWINDOWS\_CE, version is returned in {\it major} and {\it minor}.} \twocolitem{Watcom C++ 386 supervisor mode (Windows 3.1)}{Return value is wxWIN386, {\it major} is 3, {\it minor} is 1.} \end{twocollist} @@ -1457,8 +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 -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} @@ -1500,23 +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 -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}. -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}. +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}} -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} @@ -1548,8 +1567,8 @@ case-sensitive comparison. {\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. @@ -1684,6 +1703,14 @@ the string for the current locale during execution. 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}} @@ -2657,9 +2684,14 @@ this language feature but still take advantage of it when it is available. \func{bool}{wxGetKeyState}{\param{wxKeyCode }{key}} -Returns \true if the key parameter is currently pressed on the keyboard, or -with modifier keys, (caps lock, etc) if the key is active (the led light is -on). +For normal keys, returns \true if the specified key is currently down. + +For togglable keys (Caps Lock, Num Lock and Scroll Lock), returns +\true if the key is toggled such that its LED indicator is lit. There is +currently no way to test whether togglable keys are up or down. + +Even though there are virtual key codes defined for mouse buttons, they +cannot be used with this function currently. \wxheading{Include files} @@ -2721,6 +2753,48 @@ Generates an integer identifier unique to this run of the program. +\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} + + + +\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} + + + + \membersection{::wxRegisterId}\label{wxregisterid} \func{void}{wxRegisterId}{\param{long}{ id}} @@ -2970,6 +3044,18 @@ frame or dialog containing it, or {\tt NULL}. +\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} + + + \membersection{::wxLoadUserResource}\label{wxloaduserresource} \func{wxString}{wxLoadUserResource}{\param{const wxString\& }{resourceName}, \param{const wxString\& }{resourceType=``TEXT"}} @@ -3282,8 +3368,11 @@ dynamically. The same as DECLARE\_ABSTRACT\_CLASS. \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: @@ -3500,7 +3589,7 @@ Example: \helpref{RTTI overview}{runtimeclassoverview}\\ \helpref{wxDynamicCastThis}{wxdynamiccastthis}\\ \helpref{wxConstCast}{wxconstcast}\\ -\helpref{wxStatiicCast}{wxstaticcast} +\helpref{wxStaticCast}{wxstaticcast} \membersection{wxDynamicCastThis}\label{wxdynamiccastthis} @@ -3685,11 +3774,7 @@ the program work. \func{void}{wxVLogMessage}{\param{const char *}{formatString}, \param{va\_list }{argPtr}} For all normal, informational messages. They also appear in a message box by -default (but it can be changed). Notice that the standard behaviour is to not -show informational messages if there are any errors later - the logic being -that the later error messages make the informational messages preceding them -meaningless. - +default (but it can be changed). \membersection{::wxLogVerbose}\label{wxlogverbose} @@ -4332,7 +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. -Returns {\tt true} if the variable exists, {\tt false} otherwise. +Returns \true if the variable exists, \false otherwise. \membersection{wxSetEnv}\label{wxsetenv} @@ -4342,7 +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}. -Returns {\tt true} on success. +Returns \true on success. \membersection{wxUnsetEnv}\label{wxunsetenv} @@ -4353,5 +4438,5 @@ Removes the variable {\it var} from the environment. \helpref{wxGetEnv}{wxgetenv} will return {\tt NULL} after the call to this function. -Returns {\tt true} on success. +Returns \true on success.