\twocolitem{\windowstyle{wxTE\_AUTO\_URL}}{Highlight the URLs and generate the
wxTextUrlEvents when mouse events occur over them. This style is supported
under Win32 only and requires wxTE\_RICH.}
+\twocolitem{\windowstyle{wxTE\_NOHIDESEL}}{By default, the Windows text control
+doesn't show the selection when it doesn't have focus - use this style to force
+it to always show it. It doesn't do anything under other platforms.}
\twocolitem{\windowstyle{wxHSCROLL}}{A horizontal scrollbar will be created. No effect under GTK+.}
\end{twocollist}
-See also \helpref{window styles overview}{windowstyles} and
+See also \helpref{window styles overview}{windowstyles} and
\helpref{wxTextCtrl::wxTextCtrl}{wxtextctrlconstr}.
-\wxheading{Remarks}
+\wxheading{wxTextCtrl and C++ streams}
-This class multiply-inherits from {\bf streambuf} where compilers allow, allowing code such as
-the following:
+This class multiply-inherits from {\bf streambuf} where compilers allow,
+allowing code such as the following:
{\small%
\begin{verbatim}
\end{verbatim}
}%
-If your compiler does not support derivation from {\bf streambuf} and gives a compile error, define the symbol
-{\bf NO\_TEXT\_WINDOW\_STREAM} in the wxTextCtrl header file.
+If your compiler does not support derivation from {\bf streambuf} and gives a
+compile error, define the symbol {\bf NO\_TEXT\_WINDOW\_STREAM} in the
+wxTextCtrl header file.
+
+Note that independently of this setting you can always use wxTextCtrl itself
+in a stream-like manner:
+
+{\small%
+\begin{verbatim}
+ wxTextCtrl *control = new wxTextCtrl(...);
+
+ *control << 123.456 << " some text\n";
+\end{verbatim}
+}%
+
+always works. However the possibility to create an ostream associated with
+wxTextCtrl may be useful if you need to redirect the output of a function
+taking an ostream as parameter to a text control.
+
+Another commonly requested need is to redirect {\bf std::cout} to the text
+control. This could be done in the following way:
+
+{\small%
+\begin{verbatim}
+ #include <iostream>
+
+ wxTextCtrl *control = new wxTextCtrl(...);
+
+ std::streambuf *sbOld = std::cout.rdbuf();
+ std::cout.rdbuf(*control);
+
+ // use cout as usual, the output appears in the text control
+ ...
+
+ std::cout.rdbuf(sbOld);
+\end{verbatim}
+}%
+
+But wxWindows provides a convenient class to make it even simpler so instead
+you may just do
+
+{\small%
+\begin{verbatim}
+ #include <iostream>
+
+ wxTextCtrl *control = new wxTextCtrl(...);
+
+ wxStreamToTextRedirector redirect(control);
-% VZ: it is wrong to say that C++ iostreams are deprecated, we need a better
-% wording here - disabling this for now
-%Note that any use of C++ iostreams (including this one) is deprecated and might
-%get completely removed in the future.
+ // all output to cout goes into the text control until the exit from current
+ // scope
+\end{verbatim}
+}%
+
+See \helpref{wxStreamToTextRedirector}{wxstreamtotextredirector} for more
+details.
\wxheading{Event handling}
\twocolitem{{\bf EVT\_TEXT\_URL(id, func)}}{A mouse event occured over an URL
in the text control (Win32 only)}
\twocolitem{{\bf EVT\_TEXT\_MAXLEN(id, func)}}{User tried to enter more text
-into the control than the limit set by
+into the control than the limit set by
\helpref{SetMaxLength}{wxtextctrlsetmaxlength}.}
\end{twocollist}%
-%\wxheading{See also}
-%
-%\helpref{wxRichTextCtrl}{wxrichtextctrl}
-%
\latexignore{\rtfignore{\wxheading{Members}}}
\membersection{wxTextCtrl::wxTextCtrl}\label{wxtextctrlconstr}
Gets the current selection span. If the returned values are equal, there was
no selection.
+Please note that the indices returned may be used with the other wxTextctrl
+methods but don't necessarily represent the correct indices into the string
+returned by \helpref{GetValue()}{wxtextctrlgetvalue} for multiline controls
+under Windows (at least,) you should use
+\helpref{GetStringSelection()}{wxtextctrlgetstringselection} to get the selected
+text.
+
\wxheading{Parameters}
\docparam{from}{The returned first position.}
\perlnote{In wxPerl this method takes no parameter and returns a
2-element list {\tt ( from, to )}.}
+\membersection{wxTextCtrl::GetStringSelection}\label{wxtextctrlgetstringselection}
+
+\func{virtual wxString}{GetStringSelection}{\void}
+
+Gets the text currently selected in the control. If there is no selection, the
+returned string is empty.
+
\membersection{wxTextCtrl::GetValue}\label{wxtextctrlgetvalue}
\constfunc{wxString}{GetValue}{\void}
control. In other words, it allows to limit the text value length to {\it len}
not counting the terminating {\tt NUL} character.
+If {\it len} is $0$, the previously set max length limi, if any, is discarded
+and the user may enter as much text as the underlying native text control
+widget supports (typically at least 32Kb).
+
If the user tries to enter more characters into the text control when it
-already is filled up to the maximal length, a
+already is filled up to the maximal length, a
{\tt wxEVT\_COMMAND\_TEXT\_MAXLEN} event is sent to notify the program about it
(giving it the possibility to show an explanatory message, for example) and the
extra input is discarded.
projects / wxWidgets.git / blobdiff