+%%%%%%%%%%%%%%%%%%%%%%%%%%%% wxTextAttr %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
+
+\section{\class{wxTextAttr}}\label{wxtextattr}
+
+wxTextAttr represents the attributes, or style, for a range of text in a\rtfsp
+\helpref{wxTextCtrl}{wxtextctrl}.
+
+\wxheading{Derived from}
+
+No base class
+
+\wxheading{Include files}
+
+<wx/textctrl.h>
+
+\latexignore{\rtfignore{\wxheading{Members}}}
+
+\membersection{wxTextAttr::wxTextAttr}\label{wxtextattrctor}
+
+\func{}{wxTextAttr}{\void}
+
+\func{}{wxTextAttr}{\param{const wxColour\& }{colText}, \param{const wxColour\& }{colBack = wxNullColour}, \param{const wxFont\& }{font = wxNullFont}}
+
+The constructors initialize one or more of the text foreground and background
+colours and font. The values not initialized in the constructor can be set
+later, otherwise \helpref{wxTextCtrl::SetStyle}{wxtextctrlsetstyle} will use
+the default values for them.
+
+\membersection{wxTextAttr::GetBackgroundColour}
+
+\constfunc{const wxColour\&}{GetBackgroundColour}{\void}
+
+Return the background colour specified by this attribute.
+
+\membersection{wxTextAttr::GetFont}
+
+\constfunc{const wxFont\&}{GetFont}{\void}
+
+Return the text font specified by this attribute.
+
+\membersection{wxTextAttr::GetTextColour}
+
+\constfunc{const wxColour\&}{GetTextColour}{\void}
+
+Return the text colour specified by this attribute.
+
+\membersection{wxTextAttr::HasBackgroundColour}
+
+\constfunc{bool}{HasBackgroundColour}{\void}
+
+Returns {\tt TRUE} if this style specifies the background colour to use.
+
+\membersection{wxTextAttr::HasFont}
+
+\constfunc{bool}{HasFont}{\void}
+
+Returns {\tt TRUE} if this style specifies the font to use.
+
+\membersection{wxTextAttr::HasTextColour}
+
+\constfunc{bool}{HasTextColour}{\void}
+
+Returns {\tt TRUE} if this style specifies the foreground colour to use.
+
+\membersection{wxTextAttr::IsDefault}
+
+\constfunc{bool}{IsDefault}{\void}
+
+Returns {\tt TRUE} if this style specifies any non-default attributes.
+
+%%%%%%%%%%%%%%%%%%%%%%%%%%%% wxTextCtrl %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
+
\section{\class{wxTextCtrl}}\label{wxtextctrl}
A text control allows text to be displayed and edited. It may be
\twocolitem{\windowstyle{wxTE\_RICH}}{Use rich text control under Win32, this
allows to have more than 64Kb of text in the control even under Win9x. This
style is ignored under other platforms.}
+\twocolitem{\windowstyle{wxTE\_RICH2}}{Use rich text control version 2.0 or 3.0
+under Win32, this style is ignored under other platforms}
\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+.}
+\twocolitem{\windowstyle{wxTE\_DONTWRAP}}{Same as {\tt wxHSCROLL} style.}
+\twocolitem{\windowstyle{wxTE\_LINEWRAP}}{Wrap the lines too long to be shown entirely at any position (wxUniv only currently)}
+\twocolitem{\windowstyle{wxTE\_WORDWRAP}}{Wrap the lines too long to be shown entirely at word boundaries only (wxUniv only currently)}
\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 styles}
+
+Multi-line text controls support the styles, i.e. provide a possibility to set
+colours and font for individual characters in it (note that under Windows {\tt
+wxTE\_RICH} style is required for style support). To use the styles you can
+either call \helpref{SetDefaultStyle}{wxtextctrlsetdefaultstyle} before
+inserting the text or call \helpref{SetStyle}{wxtextctrlsetstyle} later to
+change the style of the text already in the control (the first solution is
+much more efficient).
+
+In either case, if the style doesn't specify some of the attributes (for
+example you only want to set the text colour but without changing the font nor
+the text background), the values of the default style will be used for them.
+If there is no default style, the attributes of the text control itself are
+used.
+
+So the following code correctly describes what it does: the second call
+to \helpref{SetDefaultStyle}{wxtextctrlsetdefaultstyle} doesn't change the
+text foreground colour (which stays red) while the last one doesn't change the
+background colour (which stays grey):
+
+{\small%
+\begin{verbatim}
+ text->SetDefaultStyle(wxTextAttr(*wxRED));
+ text->AppendText("Red text\n");
+ text->SetDefaultStyle(wxTextAttr(wxNullColour, *wxLIGHT_GREY));
+ text->AppendText("Red on grey text\n");
+ text->SetDefaultStyle(wxTextAttr(*wxBLUE);
+ text->AppendText("Blue on grey text\n");
+\end{verbatim}
+}%
-This class multiply-inherits from {\bf streambuf} where compilers allow, allowing code such as
-the following:
+\wxheading{wxTextCtrl and C++ streams}
+
+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(...);
-% 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.
+ *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);
+
+ // 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}
comes from the program itself (for example, if SetValue() is called)}
\twocolitem{{\bf EVT\_TEXT\_ENTER(id, func)}}{Respond to a wxEVT\_COMMAND\_TEXT\_ENTER event,
generated when enter is pressed in a single-line text control.}
+\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
+\helpref{SetMaxLength}{wxtextctrlsetmaxlength}.}
\end{twocollist}%
-%\wxheading{See also}
-%
-%\helpref{wxRichTextCtrl}{wxrichtextctrl}
-%
\latexignore{\rtfignore{\wxheading{Members}}}
\membersection{wxTextCtrl::wxTextCtrl}\label{wxtextctrlconstr}
Default constructor.
\func{}{wxTextCtrl}{\param{wxWindow* }{parent}, \param{wxWindowID}{ id},\rtfsp
-\param{const wxString\& }{value = ``"}, \param{const wxPoint\& }{pos}, \param{const wxSize\& }{size = wxDefaultSize},\rtfsp
-\param{long}{ style = 0}, \param{const wxValidator\& }{validator}, \param{const wxString\& }{name = ``text"}}
+\param{const wxString\& }{value = ``"}, \param{const wxPoint\& }{pos = wxDefaultPosition}, \param{const wxSize\& }{size = wxDefaultSize},\rtfsp
+\param{long}{ style = 0}, \param{const wxValidator\& }{validator = wxDefaultValidator}, \param{const wxString\& }{name = wxTextCtrlNameStr}}
Constructor, creating and showing a text control.
\wxheading{Remarks}
-The horizontal scrollbar ({\bf wxTE\_HSCROLL} style flag) will only be created for multi-line text controls.
+The horizontal scrollbar ({\bf wxHSCROLL} style flag) will only be created
+for multi-line text controls.
Without a horizontal scrollbar, text lines that don't fit in the control's
size will be wrapped (but no newline character is inserted). Single line
controls don't have a horizontal scrollbar, the text is automatically scrolled
\func{virtual bool}{CanCopy}{\void}
-Returns TRUE if the selection can be copied to the clipboard.
+Returns {\tt TRUE} if the selection can be copied to the clipboard.
\membersection{wxTextCtrl::CanCut}\label{wxtextctrlcancut}
\func{virtual bool}{CanCut}{\void}
-Returns TRUE if the selection can be cut to the clipboard.
+Returns {\tt TRUE} if the selection can be cut to the clipboard.
\membersection{wxTextCtrl::CanPaste}\label{wxtextctrlcanpaste}
\func{virtual bool}{CanPaste}{\void}
-Returns TRUE if the contents of the clipboard can be pasted into the
+Returns {\tt TRUE} if the contents of the clipboard can be pasted into the
text control. On some platforms (Motif, GTK) this is an approximation
-and returns TRUE if the control is editable, FALSE otherwise.
+and returns {\tt TRUE} if the control is editable, {\tt FALSE} otherwise.
\membersection{wxTextCtrl::CanRedo}\label{wxtextctrlcanredo}
\func{virtual bool}{CanRedo}{\void}
-Returns TRUE if there is a redo facility available and the last operation
+Returns {\tt TRUE} if there is a redo facility available and the last operation
can be redone.
\membersection{wxTextCtrl::CanUndo}\label{wxtextctrlcanundo}
\func{virtual bool}{CanUndo}{\void}
-Returns TRUE if there is an undo facility available and the last operation
+Returns {\tt TRUE} if there is an undo facility available and the last operation
can be undone.
\membersection{wxTextCtrl::Clear}\label{wxtextctrlclear}
\membersection{wxTextCtrl::Create}\label{wxtextctrlcreate}
\func{bool}{Create}{\param{wxWindow* }{parent}, \param{wxWindowID}{ id},\rtfsp
-\param{const wxString\& }{value = ``"}, \param{const wxPoint\& }{pos}, \param{const wxSize\& }{size = wxDefaultSize},\rtfsp
-\param{long}{ style = 0}, \param{const wxValidator\& }{validator}, \param{const wxString\& }{name = ``text"}}
+\param{const wxString\& }{value = ``"}, \param{const wxPoint\& }{pos = wxDefaultPosition}, \param{const wxSize\& }{size = wxDefaultSize},\rtfsp
+\param{long}{ style = 0}, \param{const wxValidator\& }{validator = wxDefaultValidator}, \param{const wxString\& }{name = wxTextCtrlNameStr}}
Creates the text control for two-step construction. Derived classes
should call or replace this function. See \helpref{wxTextCtrl::wxTextCtrl}{wxtextctrlconstr}\rtfsp
Resets the internal `modified' flag as if the current edits had been saved.
+\membersection{wxTextCtrl::GetDefaultStyle}\label{wxtextctrlgetdefaultstyle}
+
+\constfunc{const wxTextAttr\& }{GetDefaultStyle}{\void}
+
+Returns the style currently used for the new text.
+
+\wxheading{See also}
+
+\helpref{SetDefaultStyle}{wxtextctrlsetdefaultstyle}
+
\membersection{wxTextCtrl::GetInsertionPoint}\label{wxtextctrlgetinsertionpoint}
\constfunc{virtual long}{GetInsertionPoint}{\void}
may wish to avoid using functions that work with line numbers if you are
working with controls that contain large amounts of text.
+\membersection{wxTextCtrl::GetRange}\label{wxtextctrlgetrange}
+
+\constfunc{virtual wxString}{GetRange}{\param{long}{ from}, \param{long}{ to}}
+
+Returns the string containing the text staring in the positions {\it from} and
+up to {\it to} in the control. The positions must have been returned by another
+wxTextCtrl method.
+
+Please note that the positions in a multiline wxTextCtrl do {\bf not}
+correspond to the indices in the string returned by
+\helpref{GetValue}{wxtextctrlgetvalue} because of the different new line
+representations ({\tt CR} or {\tt CR LF}) and so this method should be used to
+obtain the correct results instead of extracting parts of the entire value. It
+may also be more efficient, especially if the control contains a lot of data.
+
\membersection{wxTextCtrl::GetSelection}\label{wxtextctrlgetselection}
-\func{virtual void}{GetSelection}{\param{long*}{ from}, \param{long*}{ to}}
+\constfunc{virtual void}{GetSelection}{\param{long*}{ from}, \param{long*}{ to}}
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}
\constfunc{bool}{IsModified}{\void}
-Returns TRUE if the text has been modified.
+Returns {\tt TRUE} if the text has been modified by user. Note that calling
+\helpref{SetValue}{wxtextctrlsetvalue} doesn't make the control modified.
\membersection{wxTextCtrl::LoadFile}\label{wxtextctrlloadfile}
\wxheading{Return value}
-TRUE if successful, FALSE otherwise.
+{\tt TRUE} if successful, {\tt FALSE} otherwise.
\membersection{wxTextCtrl::OnChar}\label{wxtextctrlonchar}
\wxheading{Return value}
-TRUE on success, FALSE on failure (most likely due to a too large position
+{\tt TRUE} on success, {\tt FALSE} on failure (most likely due to a too large position
parameter).
\wxheading{See also}
\wxheading{Return value}
-TRUE if the operation was successful, FALSE otherwise.
+{\tt TRUE} if the operation was successful, {\tt FALSE} otherwise.
+
+\membersection{wxTextCtrl::SetDefaultStyle}\label{wxtextctrlsetdefaultstyle}
+
+\func{bool}{SetDefaultStyle}{\param{const wxTextAttr\& }{style}}
+
+Changes the default style to use for the new text which is going to be added
+to the control using \helpref{WriteText}{wxtextctrlwritetext} or\rtfsp
+\helpref{AppendText}{wxtextctrlappendtext}.
+
+If either of the font, foreground, or background colour is not set in\rtfsp
+{\it style}, the values of the previous default style are used for them. If
+the previous default style didn't set them neither, the global font or colours
+of the text control itself are used as fall back.
+
+However if the {\it style} parameter is the default wxTextAttr, then the
+default style is just reset (instead of being combined with the new style which
+wouldn't change it at all).
+
+\wxheading{Parameters}
+
+\docparam{style}{The style for the new text.}
+
+\wxheading{Return value}
+
+{\tt TRUE} on success, {\tt FALSE} if an error occured - may also mean that
+the styles are not supported under this platform.
+
+\wxheading{See also}
+
+\helpref{GetDefaultStyle}{wxtextctrlgetdefaultstyle}
\membersection{wxTextCtrl::SetEditable}\label{wxtextctrlseteditable}
\wxheading{Parameters}
-\docparam{editable}{If TRUE, the control is editable. If FALSE, the control is read-only.}
+\docparam{editable}{If {\tt TRUE}, the control is editable. If {\tt FALSE}, the control is read-only.}
\membersection{wxTextCtrl::SetInsertionPoint}\label{wxtextctrlsetinsertionpoint}
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.
Only implemented in wxMSW/wxGTK starting with wxWindows 2.3.2.
-The {\tt wxEVT\_COMMAND\_TEXT\_MAXLEN} event is only sent by wxMSW.
-
\membersection{wxTextCtrl::SetSelection}\label{wxtextctrlsetselection}
\func{virtual void}{SetSelection}{\param{long}{ from}, \param{long}{ to}}
\docparam{to}{The last position.}
+\membersection{wxTextCtrl::SetStyle}\label{wxtextctrlsetstyle}
+
+\func{bool}{SetStyle}{\param{long }{start}, \param{long }{end}, \param{const wxTextAttr\& }{style}}
+
+Changes the style of the selection. If either of the font, foreground, or
+background colour is not set in {\it style}, the values of\rtfsp
+\helpref{GetDefaultStyle()}{wxtextctrlgetdefaultstyle} are used.
+
+\wxheading{Parameters}
+
+\docparam{start}{The start of selection to change.}
+
+\docparam{end}{The end of selection to change.}
+
+\docparam{style}{The new style for the selection.}
+
+\wxheading{Return value}
+
+{\tt TRUE} on success, {\tt FALSE} if an error occured - may also mean that
+the styles are not supported under this platform.
+
\membersection{wxTextCtrl::SetValue}\label{wxtextctrlsetvalue}
\func{virtual void}{SetValue}{\param{const wxString\& }{ value}}
-Sets the text value and marks the control as not-modified.
+Sets the text value and marks the control as not-modified (which means that
+\helpref{IsModified}{wxtextctrlismodified} would return {\tt FALSE} immediately
+after the call to SetValue).
\wxheading{Parameters}
projects / wxWidgets.git / blobdiff