The QDesignerFormWindowCursorInterface class allows you to query and modify a form window's widget selection, and in addition modify the properties of all the form's widgets. 更多...
| 头： | #include <QDesignerFormWindowCursorInterface> |
| qmake: | QT += designer |
| enum | MoveMode { MoveAnchor, KeepAnchor } |
| enum | MoveOperation { NoMove, Start, End, Next, Prev, …, Down } |
| virtual | ~QDesignerFormWindowCursorInterface () |
| virtual QWidget * | current () const = 0 |
| virtual QDesignerFormWindowInterface * | formWindow () const = 0 |
| virtual bool | hasSelection () const = 0 |
| bool | isWidgetSelected (QWidget * widget ) const |
| virtual bool | movePosition (QDesignerFormWindowCursorInterface::MoveOperation operation , QDesignerFormWindowCursorInterface::MoveMode mode = MoveAnchor) = 0 |
| virtual int | position () const = 0 |
| virtual void | resetWidgetProperty (QWidget * widget , const QString & name ) = 0 |
| virtual QWidget * | selectedWidget (int index ) const = 0 |
| virtual int | selectedWidgetCount () const = 0 |
| virtual void | setPosition (int position , QDesignerFormWindowCursorInterface::MoveMode mode = MoveAnchor) = 0 |
| virtual void | setProperty (const QString & name , const QVariant & value ) = 0 |
| virtual void | setWidgetProperty (QWidget * widget , const QString & name , const QVariant & value ) = 0 |
| virtual QWidget * | widget (int index ) const = 0 |
| virtual int | widgetCount () const = 0 |
QDesignerFormWindowCursorInterface is a convenience class that provides an interface to the associated form window's text cursor; it provides a collection of functions that enables you to query a given form window's selection and change the selection's focus according to defined modes ( MoveMode ) and movements ( MoveOperation ). You can also use the interface to query the form's widgets and change their properties.
The interface is not intended to be instantiated directly, but to provide access to the selections and widgets of Qt Designer 's current form windows. QDesignerFormWindowInterface always provides an associated cursor interface. The form window for a given widget can be retrieved using the static QDesignerFormWindowInterface::findFormWindow () functions. For example:
QDesignerFormWindowInterface *formWindow = 0;
formWindow = QDesignerFormWindowInterface::findFormWindow(myWidget);
formWindow->cursor()->setProperty(myWidget, myProperty, newValue);
You can retrieve any of Qt Designer 's current form windows through Qt Designer 's form window manager .
Once you have a form window's cursor interface, you can check if the form window has a selection at all using the hasSelection () function. You can query the form window for its total widgetCount () 和 selectedWidgetCount (). You can retrieve the currently selected widget (or widgets) using the current () 或 selectedWidget () 函数。
You can retrieve any of the form window's widgets using the widget () function, and check if a widget is selected using the isWidgetSelected () function. You can use the setProperty () function to set the selected widget's properties, and the setWidgetProperty () 或 resetWidgetProperty () functions to modify the properties of any given widget.
Finally, you can change the selection by changing the text cursor's position () 使用 setPosition () 和 movePosition () 函数。
另请参阅 QDesignerFormWindowInterface and QDesignerFormWindowManagerInterface .
This enum describes the different modes that are used when the text cursor moves.
| 常量 | 值 | 描述 |
|---|---|---|
QDesignerFormWindowCursorInterface::MoveAnchor
|
0
|
The anchor moves with the cursor to its new location. |
QDesignerFormWindowCursorInterface::KeepAnchor
|
1
|
The anchor remains at the cursor's old location. |
This enum describes the types of text cursor operation that can occur in a form window.
| 常量 | 值 | 描述 |
|---|---|---|
QDesignerFormWindowCursorInterface::NoMove
|
0
|
The cursor does not move. |
QDesignerFormWindowCursorInterface::Start
|
1
|
Moves the cursor to the start of the focus chain. |
QDesignerFormWindowCursorInterface::End
|
2
|
Moves the cursor to the end of the focus chain. |
QDesignerFormWindowCursorInterface::Next
|
3
|
Moves the cursor to the next widget in the focus chain. |
QDesignerFormWindowCursorInterface::Prev
|
4
|
Moves the cursor to the previous widget in the focus chain. |
QDesignerFormWindowCursorInterface::Left
|
5
|
The cursor moves to the left. |
QDesignerFormWindowCursorInterface::Right
|
6
|
The cursor moves to the right. |
QDesignerFormWindowCursorInterface::Up
|
7
|
The cursor moves upwards. |
QDesignerFormWindowCursorInterface::Down
|
8
|
The cursor moves downwards. |
[虚拟]
QDesignerFormWindowCursorInterface::
~QDesignerFormWindowCursorInterface
()
Destroys the cursor interface.
[pure virtual]
QWidget
*QDesignerFormWindowCursorInterface::
current
() const
Returns the currently selected widget in the form window.
另请参阅 selectedWidget ().
[pure virtual]
QDesignerFormWindowInterface
*QDesignerFormWindowCursorInterface::
formWindow
() const
Returns the form window interface associated with this cursor interface.
[pure virtual]
bool
QDesignerFormWindowCursorInterface::
hasSelection
() const
Returns true if the form window contains a selection; otherwise returns false.
返回 true 若指定 widget is selected; otherwise returns false.
[pure virtual]
bool
QDesignerFormWindowCursorInterface::
movePosition
(
QDesignerFormWindowCursorInterface::MoveOperation
operation
,
QDesignerFormWindowCursorInterface::MoveMode
mode
= MoveAnchor)
Performs the given operation on the cursor using the specified mode , and returns true if it completed successfully; otherwise returns false.
另请参阅 position () 和 setPosition ().
[pure virtual]
int
QDesignerFormWindowCursorInterface::
position
() const
返回光标位置。
另请参阅 setPosition () 和 movePosition ().
[pure virtual]
void
QDesignerFormWindowCursorInterface::
resetWidgetProperty
(
QWidget
*
widget
, const
QString
&
name
)
Resets the property with the given name 为指定 widget to its default value.
另请参阅 setProperty () 和 setWidgetProperty ().
[pure virtual]
QWidget
*QDesignerFormWindowCursorInterface::
selectedWidget
(
int
index
) const
Returns the widget with the given index in the list of selected widgets.
[pure virtual]
int
QDesignerFormWindowCursorInterface::
selectedWidgetCount
() const
Returns the number of selected widgets in the form window.
另请参阅 widgetCount ().
[pure virtual]
void
QDesignerFormWindowCursorInterface::
setPosition
(
int
position
,
QDesignerFormWindowCursorInterface::MoveMode
mode
= MoveAnchor)
Sets the position of the cursor to the given position 使用 mode to specify how it is moved there.
另请参阅 position () 和 movePosition ().
[pure virtual]
void
QDesignerFormWindowCursorInterface::
setProperty
(const
QString
&
name
, const
QVariant
&
value
)
Sets the property with the given name for the currently selected widget to the specified value .
另请参阅 setWidgetProperty () 和 resetWidgetProperty ().
[pure virtual]
void
QDesignerFormWindowCursorInterface::
setWidgetProperty
(
QWidget
*
widget
, const
QString
&
name
, const
QVariant
&
value
)
Sets the property with the given name 为给定 widget 到指定 value .
另请参阅 resetWidgetProperty () 和 setProperty ().
[pure virtual]
QWidget
*QDesignerFormWindowCursorInterface::
widget
(
int
index
) const
Returns the widget with the given index in the list of widgets in the form window.
另请参阅 selectedWidget ().
[pure virtual]
int
QDesignerFormWindowCursorInterface::
widgetCount
() const
Returns the number of widgets in the form window.
另请参阅 selectedWidgetCount ().