QUndoView Class
The QUndoView class displays the contents of a QUndoStack. More...
| Header: | #include <QUndoView> |
| qmake: | QT += widgets |
| Since: | Qt 4.2 |
| Inherits: | QListView |
This class was introduced in Qt 4.2.
Properties
- cleanIcon : QIcon
- emptyLabel : QString
Public Functions
| QIcon | cleanIcon() const |
| QString | emptyLabel() const |
| void | setCleanIcon(const QIcon &icon) |
| void | setEmptyLabel(const QString &label) |
Detailed Description
QUndoView is a QListView which displays the list of commands pushed on an undo stack. The most recently executed command is always selected. Selecting a different command results in a call to QUndoStack::setIndex(), rolling the state of the document backwards or forward to the new command.
The stack can be set explicitly with setStack(). Alternatively, a QUndoGroup object can be set with setGroup(). The view will then update itself automatically whenever the active stack of the group changes.
Property Documentation
cleanIcon : QIcon
This property holds the icon used to represent the clean state.
A stack may have a clean state set with QUndoStack::setClean(). This is usually the state of the document at the point it was saved. QUndoView can display an icon in the list of commands to show the clean state. If this property is a null icon, no icon is shown. The default value is the null icon.
Access functions:
| QIcon | cleanIcon() const |
| void | setCleanIcon(const QIcon &icon) |
emptyLabel : QString
This property holds the label used for the empty state.
The empty label is the topmost element in the list of commands, which represents the state of the document before any commands were pushed on the stack. The default is the string "<empty>".
Access functions:
| QString | emptyLabel() const |
| void | setEmptyLabel(const QString &label) |