X-Git-Url: https://git.saurik.com/wxWidgets.git/blobdiff_plain/4dba84be231243149a45a286a651d02be8487423..a0a48a3f0d4c0478177c4668ba8d4aab9ba9b426:/docs/latex/wx/text.tex

diff --git a/docs/latex/wx/text.tex b/docs/latex/wx/text.tex
index df79879a07..8d26a475c3 100644
--- a/docs/latex/wx/text.tex
+++ b/docs/latex/wx/text.tex
@@ -11,26 +11,44 @@ streambuf\\
 \helpref{wxEvtHandler}{wxevthandler}\\
 \helpref{wxObject}{wxobject}
 
+\wxheading{Include files}
+
+<wx/textctrl.h>
+
 \wxheading{Window styles}
 
 \twocolwidtha{5cm}
 \begin{twocollist}\itemsep=0pt
-\twocolitem{\windowstyle{wxTE\_PROCESS\_ENTER}}{The callback function will
-receive the message wxEVENT\_TYPE\_TEXT\_ENTER\_COMMAND. Note
-that this will break tab traversal for this panel item under
-Windows.}
+\twocolitem{\windowstyle{wxTE\_PROCESS\_ENTER}}{The control will generate
+the message wxEVENT\_TYPE\_TEXT\_ENTER\_COMMAND (otherwise pressing <Enter> is
+either processed internally by the control or used for navigation between
+dialog controls).}
+\twocolitem{\windowstyle{wxTE\_PROCESS\_TAB}}{The control will receieve
+EVT\_CHAR messages for TAB pressed - normally, TAB is used for passing to the
+next control in a dialog instead. For the control created with this style,
+you can still use Ctrl-Enter to pass to the next control from the keyboard.}
 \twocolitem{\windowstyle{wxTE\_MULTILINE}}{The text control allows multiple lines.}
 \twocolitem{\windowstyle{wxTE\_PASSWORD}}{The text will be echoed as asterisks.}
 \twocolitem{\windowstyle{wxTE\_READONLY}}{The text will not be user-editable.}
-\twocolitem{\windowstyle{wxHSCROLL}}{A horizontal scrollbar will be created.}
+\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\_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 
 \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}
@@ -43,26 +61,87 @@ This class multiply-inherits from {\bf streambuf} where compilers allow, allowin
 \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
+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);
+
+  // 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}
 
+The following commands are processed by default event handlers in wxTextCtrl: wxID\_CUT, wxID\_COPY,
+wxID\_PASTE, wxID\_UNDO, wxID\_REDO. The associated UI update events are also processed
+automatically, when the control has the focus.
+
 To process input from a text control, use these event handler macros to direct input to member
 functions that take a \helpref{wxCommandEvent}{wxcommandevent} argument.
 
 \twocolwidtha{7cm}%
 \begin{twocollist}\itemsep=0pt
 \twocolitem{{\bf EVT\_TEXT(id, func)}}{Respond to a wxEVT\_COMMAND\_TEXT\_UPDATED event,
-generated when the text changes.}
+generated when the text changes. Notice that this event will always be sent
+when the text controls contents changes - whether this is due to user input or
+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}
@@ -97,16 +176,17 @@ 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. 
-Without a horizontal scrollbar, text lines that don't fit in the control's 
+The horizontal scrollbar ({\bf wxTE\_HSCROLL} 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
-so that the \helpref{insertion point}{wxtextctrlgetinsertionpoint} is always 
+so that the \helpref{insertion point}{wxtextctrlgetinsertionpoint} is always
 visible.
 
-Under Windows, if the {\bf wxTE\_MULTILINE} style is used, the window is implemented
-as a Windows rich text control with unlimited capacity. Otherwise, normal edit control limits
-apply.
+% VZ: this is no longer true
+%Under Windows, if the {\bf wxTE\_MULTILINE} style is used, the window is implemented
+%as a Windows rich text control with unlimited capacity. Otherwise, normal edit control limits
+%apply.
 
 \wxheading{See also}
 
@@ -118,6 +198,59 @@ apply.
 
 Destructor, destroying the text control.
 
+\membersection{wxTextCtrl::AppendText}\label{wxtextctrlappendtext}
+
+\func{void}{AppendText}{\param{const wxString\& }{ text}}
+
+Appends the text to the end of the text control.
+
+\wxheading{Parameters}
+
+\docparam{text}{Text to write to the text control.}
+
+\wxheading{Remarks}
+
+After the text is appended, the insertion point will be at the end of the text control. If this behaviour is not desired,
+the programmer should use \helpref{GetInsertionPoint}{wxtextctrlgetinsertionpoint} and \helpref{SetInsertionPoint}{wxtextctrlsetinsertionpoint}.
+
+\wxheading{See also}
+
+\helpref{wxTextCtrl::WriteText}{wxtextctrlwritetext}
+
+\membersection{wxTextCtrl::CanCopy}\label{wxtextctrlcancopy}
+
+\func{virtual bool}{CanCopy}{\void}
+
+Returns 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.
+
+\membersection{wxTextCtrl::CanPaste}\label{wxtextctrlcanpaste}
+
+\func{virtual bool}{CanPaste}{\void}
+
+Returns 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.
+
+\membersection{wxTextCtrl::CanRedo}\label{wxtextctrlcanredo}
+
+\func{virtual bool}{CanRedo}{\void}
+
+Returns 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
+can be undone.
+
 \membersection{wxTextCtrl::Clear}\label{wxtextctrlclear}
 
 \func{virtual void}{Clear}{\void}
@@ -159,8 +292,8 @@ Resets the internal `modified' flag as if the current edits had been saved.
 Returns the insertion point. This is defined as the zero based index of the
 character position to the right of the insertion point. For example, if
 the insertion point is at the end of the text control, it is equal to
-both \helpref{GetValue()}{wxtextctrlgetvalue}.Length() and 
-\helpref{GetLastPosition()}{wxtextctrlgetlastposition}. 
+both \helpref{GetValue()}{wxtextctrlgetvalue}.Length() and
+\helpref{GetLastPosition()}{wxtextctrlgetlastposition}.
 
 The following code snippet safely returns the character at the insertion
 point or the zero character if the point is at the end of the control.
@@ -171,7 +304,7 @@ point or the zero character if the point is at the end of the control.
     if (tc->GetInsertionPoint() == tc->GetLastPosition())
       return '\0';
     return tc->GetValue[tc->GetInsertionPoint()];
-  }	
+  }
 \end{verbatim}
 }%
 
@@ -179,14 +312,14 @@ point or the zero character if the point is at the end of the control.
 
 \constfunc{virtual long}{GetLastPosition}{\void}
 
-Returns the zero based index of the last position in the text control, 
+Returns the zero based index of the last position in the text control,
 which is equal to the number of characters in the control.
 
 \membersection{wxTextCtrl::GetLineLength}\label{wxtextctrlgetlinelength}
 
 \constfunc{int}{GetLineLength}{\param{long}{ lineNo}}
 
-Gets the length of the specified line, not including any trailing newline 
+Gets the length of the specified line, not including any trailing newline
 character(s).
 
 \wxheading{Parameters}
@@ -228,11 +361,32 @@ calculated by actually counting newline characters in the buffer. You
 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::GetSelection}\label{wxtextctrlgetselection}
+
+\func{virtual void}{GetSelection}{\param{long*}{ from}, \param{long*}{ to}}
+
+Gets the current selection span. If the returned values are equal, there was
+no selection.
+
+\wxheading{Parameters}
+
+\docparam{from}{The returned first position.}
+
+\docparam{to}{The returned last position.}
+
+\pythonnote{The wxPython version of this method returns a tuple
+consisting of the from and to values.}
+
+\perlnote{In wxPerl this method takes no parameter and returns a
+2-element list {\tt ( from, to )}.}
+
 \membersection{wxTextCtrl::GetValue}\label{wxtextctrlgetvalue}
 
 \constfunc{wxString}{GetValue}{\void}
 
-Gets the contents of the control.
+Gets the contents of the control. Notice that for a multiline text control,
+the lines will be separated by (Unix-style) $\backslash$n characters, even under
+Windows where they are separated by a $\backslash$r$\backslash$n sequence in the native control.
 
 \membersection{wxTextCtrl::IsModified}\label{wxtextctrlismodified}
 
@@ -295,7 +449,7 @@ is to load the first dropped file into the control.
 
 \wxheading{Remarks}
 
-This is not yet implemented for the GTK.
+This is not implemented on non-Windows platforms.
 
 \wxheading{See also}
 
@@ -309,7 +463,7 @@ Pastes text from the clipboard to the text item.
 
 \membersection{wxTextCtrl::PositionToXY}\label{wxtextctrlpositiontoxy}
 
-\constfunc{long}{PositionToXY}{\param{long }{pos}, \param{long *}{x}, \param{long *}{y}}
+\constfunc{bool}{PositionToXY}{\param{long }{pos}, \param{long *}{x}, \param{long *}{y}}
 
 Converts given position to a zero-based column, line number pair.
 
@@ -323,7 +477,7 @@ Converts given position to a zero-based column, line number pair.
 
 \wxheading{Return value}
 
-Non-zero on success, zero on failure (most likely due to a too large position
+TRUE on success, FALSE on failure (most likely due to a too large position
 parameter).
 
 \wxheading{See also}
@@ -334,6 +488,16 @@ parameter).
 y values, so (x,y) = PositionToXY() is equivalent to the call described
 above.}
 
+\perlnote{In wxPerl this method only takes the {\tt pos} parameter, and
+returns a 2-element list {\tt ( x, y )}.}
+
+\membersection{wxTextCtrl::Redo}\label{wxtextctrlredo}
+
+\func{virtual void}{Redo}{\void}
+
+If there is a redo facility and the last operation can be redone, redoes the last operation. Does nothing
+if there is no redo facility.
+
 \membersection{wxTextCtrl::Remove}\label{wxtextctrlremove}
 
 \func{virtual void}{Remove}{\param{long}{ from}, \param{long}{ to}}
@@ -351,7 +515,7 @@ the character at the last position.
 
 \func{virtual void}{Replace}{\param{long}{ from}, \param{long}{ to}, \param{const wxString\& }{value}}
 
-Replaces the text starting at the first position up to (but not including) 
+Replaces the text starting at the first position up to (but not including)
 the character at the last position with the given text.
 
 \wxheading{Parameters}
@@ -380,8 +544,7 @@ TRUE if the operation was successful, FALSE otherwise.
 
 \func{virtual void}{SetEditable}{\param{const bool}{ editable}}
 
-Makes the text item editable or read-only, overriding the {\bf wxTE\_READONLY}
-flag.
+Makes the text item editable or read-only, overriding the {\bf wxTE\_READONLY} flag.
 
 \wxheading{Parameters}
 
@@ -404,6 +567,30 @@ Sets the insertion point at the given position.
 Sets the insertion point at the end of the text control. This is equivalent
 to \helpref{SetInsertionPoint}{wxtextctrlsetinsertionpoint}(\helpref{GetLastPosition}{wxtextctrlgetlastposition}()).
 
+\membersection{wxTextCtrl::SetMaxLength}\label{wxtextctrlsetmaxlength}
+
+\func{virtual void}{SetMaxLength}{\param{unsigned long }{len}}
+
+This function sets the maximum number of characters the user can enter into the
+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 
+{\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.
+
+Note that this function may only be used with single line text controls.
+
+\wxheading{Compatibility}
+
+Only implemented in wxMSW/wxGTK starting with wxWindows 2.3.2.
+
 \membersection{wxTextCtrl::SetSelection}\label{wxtextctrlsetselection}
 
 \func{virtual void}{SetSelection}{\param{long}{ from}, \param{long}{ to}}
@@ -420,7 +607,7 @@ Selects the text starting at the first position up to (but not including) the ch
 
 \func{virtual void}{SetValue}{\param{const wxString\& }{ value}}
 
-Sets the text value.
+Sets the text value and marks the control as not-modified.
 
 \wxheading{Parameters}
 
@@ -436,11 +623,18 @@ Makes the line containing the given position visible.
 
 \docparam{pos}{The position that should be visible.}
 
+\membersection{wxTextCtrl::Undo}\label{wxtextctrlundo}
+
+\func{virtual void}{Undo}{\void}
+
+If there is an undo facility and the last operation can be undone, undoes the last operation. Does nothing
+if there is no undo facility.
+
 \membersection{wxTextCtrl::WriteText}\label{wxtextctrlwritetext}
 
 \func{void}{WriteText}{\param{const wxString\& }{ text}}
 
-Writes the text into the text control at the current insertion position. 
+Writes the text into the text control at the current insertion position.
 
 \wxheading{Parameters}
 
@@ -454,25 +648,6 @@ line breaks.  See \helpref{wxTextCtrl::\cinsert}{wxtextctrlinsert} and \helpref{
 
 After the write operation, the insertion point will be at the end of the inserted text, so subsequent write operations will be appended. To append text after the user may have interacted with the control, call \helpref{wxTextCtrl::SetInsertionPointEnd}{wxtextctrlsetinsertionpointend} before writing.
 
-\membersection{wxTextCtrl::AppendText}\label{wxtextctrlappendtext}
-
-\func{void}{AppendText}{\param{const wxString\& }{ text}}
-
-Appends the text to the end of the text control.
-
-\wxheading{Parameters}
-
-\docparam{text}{Text to write to the text control.}
-
-\wxheading{Remarks}
-
-After the text is appended, the insertion point will be at the end of the text control. If this behaviour is not desired,
-the programmer should use \helpref{GetInsertionPoint}{wxtextctrlgetinsertionpoint} and \helpref{SetInsertionPoint}{wxtextctrlsetinsertionpoint}.
-
-\wxheading{See also}
-
-\helpref{wxTextCtrl::WriteText}{wxtextctrlwritetext}
-
 \membersection{wxTextCtrl::XYToPosition}\label{wxtextctrlxytoposition}
 
 \func{long}{XYToPosition}{\param{long}{ x}, \param{long}{ y}}
