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QTextEdit Class ReferenceThe QTextEdit widget provides a powerful single-page rich text editor. More... #include <qtextedit.h> Inherits QScrollView. Inherited by QMultiLineEdit, QTextBrowser, and QTextView. Public Members
Public Slots
Signals
Properties
Protected Members
Detailed DescriptionThe QTextEdit widget provides a powerful single-page rich text editor.
Introduction and ConceptsQTextEdit is an advanced WYSIWYG viewer/editor supporting rich text formatting using HTML-style tags. It is optimized to handle large documents and to respond quickly to user input. QTextEdit has four modes of operation:
1.A more complete API that supports setting margins, images, etc., is planned for a later Qt release. QTextEdit can be used as a syntax highlighting editor when used in conjunction with QSyntaxHighlighter. We recommend that you always call setTextFormat() to set the mode you want to use. If you use AutoText then setText() and append() will try to determine whether the text they are given is plain text or rich text. If you use RichText then setText() and append() will assume that the text they are given is rich text. insert() simply inserts the text it is given. QTextEdit works on paragraphs and characters. A paragraph is a formatted string which is word-wrapped to fit into the width of the widget. By default when reading plain text, one newline signify a paragraph. A document consists of zero or more paragraphs, indexed from 0. Characters are indexed on a per-paragraph basis, also indexed from 0. The words in the paragraph are aligned in accordance with the paragraph's alignment(). Paragraphs are separated by hard line breaks. Each character within a paragraph has its own attributes, for example, font and color. The text edit documentation uses the following concepts:
QTextEdit can display images (using QMimeSourceFactory), lists and tables. If the text is too large to view within the text edit's viewport, scrollbars will appear. The text edit can load both plain text and HTML files (a subset of HTML 3.2 and 4). The rendering style and the set of valid tags are defined by a styleSheet(). Custom tags can be created and placed in a custom style sheet. Change the style sheet with setStyleSheet(); see QStyleSheet for details. The images identified by image tags are displayed if they can be interpreted using the text edit's QMimeSourceFactory; see setMimeSourceFactory(). If you want a text browser with more navigation use QTextBrowser. If you just need to display a small piece of rich text use QLabel or QSimpleRichText. If you create a new QTextEdit, and want to allow the user to edit rich text, call setTextFormat(Qt::RichText) to ensure that the text is treated as rich text. (Rich text uses HTML tags to set text formatting attributes. See QStyleSheet for information on the HTML tags that are supported.). If you don't call setTextFormat() explicitly the text edit will guess from the text itself whether it is rich text or plain text. This means that if the text looks like HTML or XML it will probably be interpreted as rich text, so you should call setTextFormat(Qt::PlainText) to preserve such text. Note that we do not intend to add a full-featured web browser widget to Qt (because that would easily double Qt's size and only a few applications would benefit from it). The rich text support in Qt is designed to provide a fast, portable and efficient way to add reasonable online help facilities to applications, and to provide a basis for rich text editors.
Using QTextEdit as a Display WidgetQTextEdit can display a large HTML subset, including tables and images. The text is set or replaced using setText() which deletes any existing text and replaces it with the text passed in the setText() call. If you call setText() with legacy HTML (with setTextFormat(RichText) in force), and then call text(), the text that is returned may have different markup, but will render the same. Text can be inserted with insert(), paste(), pasteSubType() and append(). Text that is appended does not go into the undo history; this makes append() faster and consumes less memory. Text can also be cut(). The entire text is deleted with clear() and the selected text is deleted with removeSelectedText(). Selected (marked) text can also be deleted with del() (which will delete the character to the right of the cursor if no text is selected). Loading and saving text is achieved using setText() and text(), for example:
QFile file( fileName ); // Read the text from a file
if ( file.open( IO_ReadOnly ) ) {
QTextStream stream( &file );
textEdit->setText( stream.read() );
}
QFile file( fileName ); // Write the text to a file
if ( file.open( IO_WriteOnly ) ) {
QTextStream stream( &file );
stream << textEdit->text();
textEdit->setModified( FALSE );
}
By default the text edit wraps words at whitespace to fit within the text edit widget. The setWordWrap() function is used to specify the kind of word wrap you want, or NoWrap if you don't want any wrapping. Call setWordWrap() to set a fixed pixel width FixedPixelWidth, or character column (e.g. 80 column) FixedColumnWidth with the pixels or columns specified with setWrapColumnOrWidth(). If you use word wrap to the widget's width WidgetWidth, you can specify whether to break on whitespace or anywhere with setWrapPolicy(). The background color is set differently than other widgets, using setPaper(). You specify a brush style which could be a plain color or a complex pixmap. Hypertext links are automatically underlined; this can be changed with setLinkUnderline(). The tab stop width is set with setTabStopWidth(). The zoomIn() and zoomOut() functions can be used to resize the text by increasing (decreasing for zoomOut()) the point size used. Images are not affected by the zoom functions. The lines() function returns the number of lines in the text and paragraphs() returns the number of paragraphs. The number of lines within a particular paragraph is returned by linesOfParagraph(). The length of the entire text in characters is returned by length(). You can scroll to an anchor in the text, e.g. <a name="anchor"> with scrollToAnchor(). The find() function can be used to find and select a given string within the text. A read-only QTextEdit provides the same functionality as the (obsolete) QTextView. (QTextView is still supplied for compatibility with old code.)
Read-only key bindingsWhen QTextEdit is used read-only the key-bindings are limited to navigation, and text may only be selected with the mouse:
The text edit may be able to provide some meta-information. For example, the documentTitle() function will return the text from within HTML <title> tags. The text displayed in a text edit has a context. The context is a path which the text edit's QMimeSourceFactory uses to resolve the locations of files and images. It is passed to the mimeSourceFactory() when quering data. (See QTextEdit() and context().) Setting the text format to LogText puts the widget in a special
mode which is optimized for very large texts. In this mode editing
and rich text support are disabled (the widget is explicitly set
to read-only mode). This allows the text to be stored in a
different, more memory efficient manner. However, a certain degree
of text formatting is supported through the use of formatting
tags. A tag is delimited by < and >. The characters <, > and & are escaped by using <, > and
&. A tag pair consists of a left and a right tag (or
open/close tags). Left-tags mark the starting point for
formatting, while right-tags mark the ending point. A right-tag
always start with a / before the tag keyword. For example <b> and </b> are a tag pair. Tags can be nested, but they
have to be closed in the same order as they are opened. For
example, <b><u></u></b> is valid, while <b><u></b></u> will output an error message.
By using tags it is possible to change the color, bold, italic and
underline settings for a piece of text. A color can be specified
by using the HTML font tag <font color=colorname>. The color
name can be one of the color names from the X11 color database, or
a RGB hex value (e.g #00ff00). Example of valid color tags:
<font color=red>, <font color="light blue">, <font color="#223344">. Bold, italic and underline settings can be
specified by the tags <b>, <i> and <u>. Note that a
tag does not necessarily have to be closed. A valid example:
Stylesheets can also be used in LogText mode. To create and use a
custom tag, you could do the following:
Note that you can use setMaxLogLines() to limit the number of
lines the widget can hold in LogText mode.
There are a few things that you need to be aware of when the
widget is in this mode:
All the information about using QTextEdit as a display widget also
applies here.
The current format's attributes are set with setItalic(),
setBold(), setUnderline(), setFamily() (font family),
setPointSize(), setColor() and setCurrentFont(). The current
paragraph's alignment is set with setAlignment().
Use setSelection() to select text. The setSelectionAttributes()
function is used to indicate how selected text should be
displayed. Use hasSelectedText() to find out if any text is
selected. The currently selected text's position is available
using getSelection() and the selected text itself is returned by
selectedText(). The selection can be copied to the clipboard with
copy(), or cut to the clipboard with cut(). It can be deleted with
removeSelectedText(). The entire text can be selected (or
unselected) using selectAll(). QTextEdit supports multiple
selections. Most of the selection functions operate on the default
selection, selection 0. If the user presses a non-selecting key,
e.g. a cursor key without also holding down Shift, all selections
are cleared.
Set and get the position of the cursor with setCursorPosition()
and getCursorPosition() respectively. When the cursor is moved,
the signals currentFontChanged(), currentColorChanged() and
currentAlignmentChanged() are emitted to reflect the font, color
and alignment at the new cursor position.
If the text changes, the textChanged() signal is emitted, and if
the user inserts a new line by pressing Return or Enter,
returnPressed() is emitted. The isModified() function will return
TRUE if the text has been modified.
QTextEdit provides command-based undo and redo. To set the depth
of the command history use setUndoDepth() which defaults to 100
steps. To undo or redo the last operation call undo() or redo().
The signals undoAvailable() and redoAvailable() indicate whether
the undo and redo operations can be executed.
The indent() function is used to reindent a paragraph. It is
useful for code editors, for example in Qt Designer's code editor Ctrl+I invokes the indent()
function.
The list of key-bindings which are implemented for editing:
To select (mark) text hold down the Shift key whilst pressing one
of the movement keystrokes, for example, Shift+Right Arrow
will select the character to the right, and Shift+Ctrl+Right Arrow will select the word to the right, etc.
By default the text edit widget operates in insert mode so all
text that the user enters is inserted into the text edit and any
text to the right of the cursor is moved out of the way. The mode
can be changed to overwrite, where new text overwrites any text to
the right of the cursor, using setOverwriteMode().
See also Basic Widgets and Text Related Classes.
This enum is used by moveCursor() to specify in which direction
the cursor should be moved:
This enum is used by doKeyboardAction() to specify which action
should be executed:
This enum is used to set the vertical alignment of the text.
This enum defines the QTextEdit's word wrap modes.
See also wordWrap and wordWrap.
This enum defines where text can be wrapped in word wrap mode.
See also wrapPolicy.
The context is a path which the text edit's QMimeSourceFactory
uses to resolve the locations of files and images. It is passed to
the mimeSourceFactory() when quering data.
For example if the text contains an image tag,
<img src="image.png">, and the context is "path/to/look/in", the
QMimeSourceFactory will try to load the image from
"path/to/look/in/image.png". If the tag was
<img src="/image.png">, the context will not be used (because
QMimeSourceFactory recognizes that we have used an absolute path)
and will try to load "/image.png". The context is applied in exactly
the same way to hrefs, for example,
<a href="target.html">Target</a>, would resolve to
"path/to/look/in/target.html".
See also setAlignment().
If there is an anchor at position pos (in contents
coordinates), its href is returned, otherwise QString::null is
returned.
Examples: network/clientserver/client/client.cpp, network/clientserver/server/server.cpp, network/httpd/httpd.cpp, and process/process.cpp.
Returns the enabled set of auto formatting features.
See the "autoFormatting" property for details.
See also setBold().
See also cut(), removeSelectedText(), and text.
This signal is emitted when the mouse is clicked on the paragraph
para at character position pos.
See also doubleClicked().
See also setColor() and paper.
See also text.
Examples: action/application.cpp, application/application.cpp, helpviewer/helpwindow.cpp, mdi/application.cpp, and qdir/qdir.cpp.
See also hasSelectedText and copyAvailable().
This signal is emitted when text is selected or de-selected in the
text edit.
When text is selected this signal will be emitted with yes set
to TRUE. If no text has been selected or if the selected text is
de-selected this signal is emitted with yes set to FALSE.
If yes is TRUE then copy() can be used to copy the selection to
the clipboard. If yes is FALSE then copy() does nothing.
See also selectionChanged().
This function is obsolete. It is provided to keep old source working. We strongly advise against using it in new code.
This function is called to create a right mouse button popup menu.
If you want to create a custom popup menu, reimplement this function
and return the created popup menu. Ownership of the popup menu is
transferred to the caller.
This function is only called if createPopupMenu( const QPoint & )
returns 0.
This signal is emitted if the alignment of the current paragraph
has changed.
The new alignment is a.
See also setAlignment().
This signal is emitted if the color of the current format has
changed.
The new color is c.
See also setColor().
See also setCurrentFont(), setFamily(), and setPointSize().
This signal is emitted if the font of the current format has
changed.
The new font is f.
See also setCurrentFont().
This signal is emitted if the vertical alignment of the current
format has changed.
The new vertical alignment is a.
See also setVerticalAlignment().
If there is no selected text (in selection 0) nothing happens.
See also QTextEdit::copy(), paste(), and pasteSubType().
See also removeSelectedText() and cut().
Returns the title of the document parsed from the text.
See the "documentTitle" property for details.
This signal is emitted when the mouse is double-clicked on the
paragraph para at character position pos.
See also clicked().
See also setCursorPosition().
See also setFamily(), setCurrentFont(), and setPointSize().
If para and index are both 0 the search begins from the
current cursor position. If para and index are both not 0,
the search begins from the *index character position in the
*para paragraph.
If cs is TRUE the search is case sensitive, otherwise it is
case insensitive. If wo is TRUE the search looks for whole word
matches only; otherwise it searches for any matching text. If forward is TRUE (the default) the search works forward from the
starting position to the end of the text, otherwise it works
backwards to the beginning of the text.
If expr is found the function returns TRUE. If index and para are not 0, the number of the paragraph in which the first
character of the match was found is put into *para, and the
index position of that character within the paragraph is put into
*index.
If expr is not found the function returns FALSE. If index
and para are not 0 and expr is not found, *index
and *para are undefined.
Please note that this function will make the next occurrence of
the string (if found) the current selection, and will thus
modify the cursor position.
Returns QScrollView::font()
Warning: In previous versions this function returned the font of
the current format. This lead to confusion. Please use
currentFont() instead.
Example: qwerty/qwerty.cpp.
See also setCursorPosition().
If there is no selection, *paraFrom, *indexFrom, *paraTo
and *indexTo are all set to -1.
If paraFrom, indexFrom, paraTo or indexTo is 0 this
function does nothing.
The selNum is the number of the selection (multiple selections
are supported). It defaults to 0 (the default selection).
See also setSelection() and selectedText.
Returns TRUE if some text is selected in selection 0; otherwise returns FALSE.
See the "hasSelectedText" property for details.
Reimplemented from QWidget.
The insertionFlags define how the text is inserted. If RedoIndentation is set, the paragraph is re-indented. If CheckNewLines is set, newline characters in text result in hard
line breaks (i.e. new paragraphs). If checkNewLine is not set,
the behaviour of the editor is undefined if the text contains
newlines. (It is not possible to change QTextEdit's newline handling
behavior, but you can use QString::replace() to preprocess text
before inserting it.) If RemoveSelected is set, any selected
text (in selection 0) is removed before the text is inserted.
The default flags are CheckNewLines | RemoveSelected.
If the widget is in LogText mode this function will do nothing.
See also paste() and pasteSubType().
Returns TRUE if the document has been modified by the user; otherwise returns FALSE.
See the "modified" property for details.
Returns the text edit's overwrite mode.
See the "overwriteMode" property for details.
Returns TRUE if the text edit is read-only; otherwise returns FALSE.
See the "readOnly" property for details.
Returns TRUE if undo/redo is enabled; otherwise returns FALSE.
See the "undoRedoEnabled" property for details.
See also setItalic().
Reimplemented from QWidget.
Reimplemented in QTextBrowser.
Returns the number of characters in the text.
See the "length" property for details.
Warning: This function may be slow. Lines change all the time
during word wrapping, so this function has to iterate over all the
paragraphs and get the number of lines from each one individually.
Returns TRUE if hypertext links will be underlined; otherwise returns FALSE.
See the "linkUnderline" property for details.
See also setMimeSourceFactory().
Examples: action/application.cpp, application/application.cpp, helpviewer/helpwindow.cpp, mdi/application.cpp, and qdir/qdir.cpp.
This signal is emitted when the modification status of the
document has changed. If m is TRUE, the document was modified,
otherwise the modification state has been reset to unmodified.
See also modified.
Returns the background (paper) brush.
See the "paper" property for details.
This function ignores newlines.
If there is no text in the clipboard nothing happens.
See also pasteSubType(), cut(), and QTextEdit::copy().
If there is no text with format subtype in the clipboard
nothing happens.
See also paste(), cut(), and QTextEdit::copy().
See also setCursorPosition().
See also setFamily(), setCurrentFont(), and setPointSize().
If there is no operation to redo, i.e. there is no redo step in
the undo/redo history, nothing happens.
See also redoAvailable(), undo(), and undoDepth.
This signal is emitted when the availability of redo changes. If
yes is TRUE, then redo() will work until redoAvailable( FALSE )
is next emitted.
See also redo() and undoDepth.
See also selectedText and removeSelection().
See also removeSelectedText().
Although used extensively internally you shouldn't need to call
this yourself.
This signal is emitted if the user pressed the Return or the Enter
key.
See also selectedText.
Returns the selected text (from selection 0) or an empty string if there is no currently selected text (in selection 0).
See the "selectedText" property for details.
This signal is emitted whenever the selection changes.
See also setSelection() and copyAvailable().
Reimplemented in QMultiLineEdit.
Sets the enabled set of auto formatting features to features.
See the "autoFormatting" property for details.
See also bold().
Sets the font of the current format to f.
If the widget is in LogText mode this function will do
nothing. Use setFont() instead.
See also currentFont(), setPointSize(), and setFamily().
See also getCursorPosition().
See also family() and setCurrentFont().
See also italic().
Sets whether hypertext links will be underlined.
See the "linkUnderline" property for details.
Warning: Never use formatting tags that span more than one line
when the maximum log lines is set. When lines are removed from the
top of the buffer it could result in an unbalanced tag pair, i.e.
the left formatting tag is removed before the right one.
See also mimeSourceFactory().
Sets whether the document has been modified by the user to m.
See the "modified" property for details.
Sets the text edit's overwrite mode to b.
See the "overwriteMode" property for details.
Sets the background (paper) brush to pap.
See the "paper" property for details.
Note that if s is zero or negative, the behaviour of this
function is not defined.
See also pointSize(), setCurrentFont(), and setFamily().
Sets whether the text edit is read-only to b.
See the "readOnly" property for details.
Any existing selections which have a different id (selNum) are
left alone, but if an existing selection has the same id as selNum it is removed and replaced by this selection.
Uses the selection settings of selection selNum. If selNum
is 0, this is the default selection.
The cursor is moved to the end of the selection if selNum is 0,
otherwise the cursor position remains unchanged.
See also getSelection() and selectedText.
This only works for selNum > 0. The default selection (selNum == 0) gets its attributes from the text edit's
colorGroup().
See also styleSheet().
Sets whether TAB changes focus or is accepted as input to b.
See the "tabChangesFocus" property for details.
Sets the tab stop width in pixels to ts.
See the "tabStopWidth" property for details.
Sets the text edit's text to txt.
See the "text" property for details.
Changes the text of the text edit to the string text and the
context to context. Any previous text is removed.
text may be interpreted either as plain text or as rich text,
depending on the textFormat(). The default setting is AutoText,
i.e. the text edit auto-detects the format from text.
For rich text the rendering style and available tags are defined
by a styleSheet(); see QStyleSheet for details.
The optional context is a path which the text edit's
QMimeSourceFactory uses to resolve the locations of files and
images. (See QTextEdit::QTextEdit().) It is passed to the text
edit's QMimeSourceFactory when quering data.
Note that the undo/redo history is cleared by this function.
See also text and textFormat.
Sets the text format: rich text, plain text, log text or auto text to f.
See the "textFormat" property for details.
See also underline().
Sets the depth of the undo history to d.
See the "undoDepth" property for details.
Sets whether undo/redo is enabled to b.
See the "undoRedoEnabled" property for details.
Sets the word wrap mode to mode.
See the "wordWrap" property for details.
Sets the position (in pixels or columns depending on the wrap mode) where text will be wrapped.
See the "wrapColumnOrWidth" property for details.
Sets the word wrap policy, at whitespace or anywhere to policy.
See the "wrapPolicy" property for details.
See also setStyleSheet().
Examples: action/application.cpp, application/application.cpp, helpviewer/helpwindow.cpp, and mdi/application.cpp.
In some situations you may want to force the whole text
to be formatted. For example, if after calling setText(), you wanted
to know the height of the document (using contentsHeight()), you
would call this function first.
Returns TRUE if TAB changes focus or is accepted as input; otherwise returns FALSE.
See the "tabChangesFocus" property for details.
Returns the tab stop width in pixels.
See the "tabStopWidth" property for details.
Returns the text edit's text.
See the "text" property for details.
Returns the text of paragraph para.
If textFormat() is RichText the text will contain HTML
formatting tags.
This signal is emitted whenever the text in the text edit changes.
Examples: qwerty/qwerty.cpp and rot13/rot13.cpp.
Returns the text edit's text cursor.
Warning: QTextCursor is not in the public API, but in special
circumstances you might wish to use it.
Returns the text format: rich text, plain text, log text or auto text.
See the "textFormat" property for details.
See also setUnderline().
If there is no operation to undo, i.e. there is no undo step in
the undo/redo history, nothing happens.
See also undoAvailable(), redo(), and undoDepth.
This signal is emitted when the availability of undo changes. If
yes is TRUE, then undo() will work until undoAvailable( FALSE )
is next emitted.
See also undo() and undoDepth.
Returns the depth of the undo history.
See the "undoDepth" property for details.
Returns the word wrap mode.
See the "wordWrap" property for details.
Returns the position (in pixels or columns depending on the wrap mode) where text will be wrapped.
See the "wrapColumnOrWidth" property for details.
Returns the word wrap policy, at whitespace or anywhere.
See the "wrapPolicy" property for details.
See also zoomOut().
This is an overloaded member function, provided for convenience. It behaves essentially like the above function.
Zooms in on the text by by making the base font size one point
larger and recalculating all font sizes to be the new size. This
does not change the size of any images.
See also zoomOut().
See also zoomIn().
This is an overloaded member function, provided for convenience. It behaves essentially like the above function.
Zooms out on the text by by making the base font size one point
smaller and recalculating all font sizes to be the new size. This
does not change the size of any images.
See also zoomIn().
This property holds the enabled set of auto formatting features.
The value can be any combination of the values in the AutoFormatting enum. The default is AutoAll. Choose AutoNone
to disable all automatic formatting.
Currently, the only automatic formatting feature provided is AutoBulletList; future versions of Qt may offer more.
Set this property's value with setAutoFormatting() and get this property's value with autoFormatting().
This property holds the title of the document parsed from the text.
For PlainText the title will be an empty string. For RichText the title will be the text between the <title> tags,
if present, otherwise an empty string.
Get this property's value with documentTitle().
This property holds whether some text is selected in selection 0.
Get this property's value with hasSelectedText().
This property holds the number of characters in the text.
Get this property's value with length().
This property holds whether hypertext links will be underlined.
If TRUE (the default) hypertext links will be displayed
underlined. If FALSE links will not be displayed underlined.
Set this property's value with setLinkUnderline() and get this property's value with linkUnderline().
This property holds whether the document has been modified by the user.
Set this property's value with setModified() and get this property's value with isModified().
This property holds the text edit's overwrite mode.
If FALSE (the default) characters entered by the user are inserted
with any characters to the right being moved out of the way. If
TRUE, the editor is in overwrite mode, i.e. characters entered by
the user overwrite any characters to the right of the cursor
position.
Set this property's value with setOverwriteMode() and get this property's value with isOverwriteMode().
This property holds the background (paper) brush.
The brush that is currently used to draw the background of the
text edit. The initial setting is an empty brush.
Set this property's value with setPaper() and get this property's value with paper().
This property holds whether the text edit is read-only.
In a read-only text edit the user can only navigate through the
text and select text; modifying the text is not possible.
This property's default is FALSE.
Set this property's value with setReadOnly() and get this property's value with isReadOnly().
This property holds the selected text (from selection 0) or an empty string if there is no currently selected text (in selection 0).
The text is always returned as PlainText if the textFormat() is
PlainText or AutoText, otherwise it is returned as HTML.
See also hasSelectedText.
Get this property's value with selectedText().
This property holds whether TAB changes focus or is accepted as input.
In some occasions text edits should not allow the user to input
tabulators or change indentation using the TAB key, as this breaks
the focus chain. The default is FALSE.
Set this property's value with setTabChangesFocus() and get this property's value with tabChangesFocus().
This property holds the tab stop width in pixels.
Set this property's value with setTabStopWidth() and get this property's value with tabStopWidth().
This property holds the text edit's text.
There is no default text.
On setting, any previous text is deleted.
The text may be interpreted either as plain text or as rich text,
depending on the textFormat(). The default setting is AutoText,
i.e. the text edit auto-detects the format of the text.
For richtext, calling text() on an editable QTextEdit will cause
the text to be regenerated from the textedit. This may mean that
the QString returned may not be exactly the same as the one that
was set.
See also textFormat.
Set this property's value with setText() and get this property's value with text().
This property holds the text format: rich text, plain text, log text or auto text.
The text format is one of the following:
Set this property's value with setTextFormat() and get this property's value with textFormat().
This property holds the depth of the undo history.
The maximum number of steps in the undo/redo history. The default
is 100.
Set this property's value with setUndoDepth() and get this property's value with undoDepth().
This property holds whether undo/redo is enabled.
When changing this property, the undo/redo history is cleared.
The default is TRUE.
Set this property's value with setUndoRedoEnabled() and get this property's value with isUndoRedoEnabled().
This property holds the word wrap mode.
The default mode is WidgetWidth which causes words to be
wrapped at the right edge of the text edit. Wrapping occurs at
whitespace, keeping whole words intact. If you want wrapping to
occur within words use setWrapPolicy(). If you set a wrap mode of
FixedPixelWidth or FixedColumnWidth you should also call
setWrapColumnOrWidth() with the width you want.
See also WordWrap, wrapColumnOrWidth, and wrapPolicy.
Set this property's value with setWordWrap() and get this property's value with wordWrap().
This property holds the position (in pixels or columns depending on the wrap mode) where text will be wrapped.
If the wrap mode is FixedPixelWidth, the value is the number of
pixels from the left edge of the text edit at which text should be
wrapped. If the wrap mode is FixedColumnWidth, the value is the
column number (in character columns) from the left edge of the
text edit at which text should be wrapped.
See also wordWrap.
Set this property's value with setWrapColumnOrWidth() and get this property's value with wrapColumnOrWidth().
This property holds the word wrap policy, at whitespace or anywhere.
Defines where text can be wrapped when word wrap mode is not NoWrap. The choices are AtWordBoundary (the default), Anywhere and AtWordOrDocumentBoundary
See also wordWrap.
Set this property's value with setWrapPolicy() and get this property's value with wrapPolicy().
This file is part of the Qt toolkit.
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