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Eneboo - Documentación para desarrolladores
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Eneboo - Documentación para desarrolladores
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The QListBox widget provides a list of selectable, read-only items. Más...
#include <qlistbox.h>
The QListBox widget provides a list of selectable, read-only items.
This is typically a single-column list in which either no item or one item is selected, but it can also be used in many other ways.
QListBox will add scroll bars as necessary, but it isn't intended for really big lists. If you want more than a few thousand items, it's probably better to use a different widget mainly because the scroll bars won't provide very good navigation, but also because QListBox may become slow with huge lists. (See QListView and QTable for possible alternatives.)
There are a variety of selection modes described in the QListBox::SelectionMode documentation. The default is Single selection mode, but you can change it using setSelectionMode(). (setMultiSelection() is still provided for compatibility with Qt 1.x. We recommend using setSelectionMode() in all code.)
Because QListBox offers multiple selection it must display keyboard focus and selection state separately. Therefore there are functions both to set the selection state of an item, i.e. setSelected(), and to set which item displays keyboard focus, i.e. setCurrentItem().
The list box normally arranges its items in a single column and adds a vertical scroll bar if required. It is possible to have a different fixed number of columns (setColumnMode()), or as many columns as will fit in the list box's assigned screen space (setColumnMode(FitToWidth)), or to have a fixed number of rows (setRowMode()) or as many rows as will fit in the list box's assigned screen space (setRowMode(FitToHeight)). In all these cases QListBox will add scroll bars, as appropriate, in at least one direction.
If multiple rows are used, each row can be as high as necessary (the normal setting), or you can request that all items will have the same height by calling setVariableHeight(FALSE). The same applies to a column's width, see setVariableWidth().
The QListBox's items are QListBoxItem objects. QListBox provides methods to insert new items as strings, as pixmaps, and as QListBoxItem * (insertItem() with various arguments), and to replace an existing item with a new string, pixmap or QListBoxItem (changeItem() with various arguments). You can also remove items singly with removeItem() or clear() the entire list box. Note that if you create a QListBoxItem yourself and insert it, QListBox takes ownership of the item.
You can also create a QListBoxItem, such as QListBoxText or QListBoxPixmap, with the list box as first parameter. The item will then append itself. When you delete an item it is automatically removed from the list box.
The list of items can be arbitrarily large; QListBox will add scroll bars if necessary. QListBox can display a single-column (the common case) or multiple-columns, and offers both single and multiple selection. QListBox does not support multiple-column items (but QListView and QTable do), or tree hierarchies (but QListView does).
The list box items can be accessed both as QListBoxItem objects (recommended) and using integer indexes (the original QListBox implementation used an array of strings internally, and the API still supports this mode of operation). Everything can be done using the new objects, and most things can be done using indexes.
Each item in a QListBox contains a QListBoxItem. One of the items can be the current item. The currentChanged() signal and the highlighted() signal are emitted when a new item becomes current, e.g. because the user clicks on it or QListBox::setCurrentItem() is called. The selected() signal is emitted when the user double-clicks on an item or presses Enter on the current item.
If the user does not select anything, no signals are emitted and currentItem() returns -1.
A list box has WheelFocus as a default focusPolicy(), i.e. it can get keyboard focus by tabbing, clicking and through the use of the mouse wheel.
New items can be inserted using insertItem(), insertStrList() or insertStringList(). inSort() is obsolete because this method is quite inefficient. It's preferable to insert the items normally and call sort() afterwards, or to insert a sorted QStringList().
By default, vertical and horizontal scroll bars are added and removed as necessary. setHScrollBarMode() and setVScrollBarMode() can be used to change this policy.
If you need to insert types other than strings and pixmaps, you must define new classes which inherit QListBoxItem.
| enum QListBox::LayoutMode |
This enum type is used to specify how QListBox lays out its rows and columns.
FixedNumber There is a fixed number of rows (or columns).
FitToWidth There are as many columns as will fit on-screen.
FitToHeight There are as many rows as will fit on-screen.
Variable There are as many rows as are required by the column mode. (Or as many columns as required by the row mode.)
Example: When you call setRowMode( FitToHeight ), columnMode() automatically becomes Variable to accommodate the row mode you've set.
| enum QListBox::LayoutMode |
This enumerated type is used by QListBox to indicate how it reacts to selection by the user.
Single When the user selects an item, any already-selected item becomes unselected and the user cannot unselect the selected item. This means that the user can never clear the selection, even though the selection may be cleared by the application programmer using QListBox::clearSelection().
Multi When the user selects an item the selection status of that item is toggled and the other items are left alone. Also, multiple items can be selected by dragging the mouse while the left mouse button is kept pressed.
Extended When the user selects an item the selection is cleared and the new item selected. However, if the user presses the Ctrl key when clicking on an item, the clicked item gets toggled and all other items are left untouched. And if the user presses the Shift key while clicking on an item, all items between the current item and the clicked item get selected or unselected, depending on the state of the clicked item. Also, multiple items can be selected by dragging the mouse while the left mouse button is kept pressed.
NoSelection Items cannot be selected.
In other words, Single is a real single-selection list box, Multi is a real multi-selection list box, Extended is a list box in which users can select multiple items but usually want to select either just one or a range of contiguous items, and NoSelection is for a list box where the user can look but not touch.
Constructs a new empty list box called name and with parent parent.
Performance is boosted by modifying the widget flags f so that only part of the QListBoxItem children is redrawn. This may be unsuitable for custom QListBoxItem classes, in which case WStaticContents and WNoAutoErase should be cleared immediately after construction.
| QListBox::~QListBox | ( | ) |
Destroys the list box. Deletes all list box items.
| QListBox::~QListBox | ( | ) |
| bool QListBox::autoBottomScrollBar | ( | ) | const [inline] |
Returns TRUE if hScrollBarMode() is Auto; otherwise returns FALSE.
| bool QListBox::autoBottomScrollBar | ( | ) | const [inline] |
| bool QListBox::autoScroll | ( | ) | const [inline] |
| bool QListBox::autoScroll | ( | ) | const [inline] |
| bool QListBox::autoScrollBar | ( | ) | const [inline] |
Returns TRUE if vScrollBarMode() is Auto; otherwise returns FALSE.
| bool QListBox::autoScrollBar | ( | ) | const [inline] |
| bool QListBox::autoUpdate | ( | ) | const [inline] |
| bool QListBox::autoUpdate | ( | ) | const [inline] |
| bool QListBox::bottomScrollBar | ( | ) | const [inline] |
Returns FALSE if vScrollBarMode() is AlwaysOff; otherwise returns TRUE.
| bool QListBox::bottomScrollBar | ( | ) | const [inline] |
Returns the item height of item i.
| int QListBox::cellHeight | ( | ) | const [inline] |
Esta es una función miembro sobrecargada que se suministra por conveniencia. Difiere de la anterior función solamente en los argumentos que acepta.
Returns the item height of the first item, item 0.
| int QListBox::cellHeight | ( | ) | const [inline] |
| int QListBox::cellWidth | ( | ) | const [inline] |
Returns the maximum item width.
Esta es una función miembro sobrecargada que se suministra por conveniencia. Difiere de la anterior función solamente en los argumentos que acepta.
| int QListBox::cellWidth | ( | ) | const [inline] |
| void QListBox::centerCurrentItem | ( | ) | [inline] |
| void QListBox::centerCurrentItem | ( | ) | [inline] |
This function does exactly the same as ensureCurrentVisible()
Esta es una función miembro sobrecargada que se suministra por conveniencia. Difiere de la anterior función solamente en los argumentos que acepta. Replaces the item at position index with a new list box text item with text text.
The operation is ignored if index is out of range.
Esta es una función miembro sobrecargada que se suministra por conveniencia. Difiere de la anterior función solamente en los argumentos que acepta. Replaces the item at position index with a new list box pixmap item with pixmap pixmap.
The operation is ignored if index is out of range.
Esta es una función miembro sobrecargada que se suministra por conveniencia. Difiere de la anterior función solamente en los argumentos que acepta. Replaces the item at position index with a new list box pixmap item with pixmap pixmap and text text.
The operation is ignored if index is out of range.
| void QListBox::changeItem | ( | const QListBoxItem * | , |
| int | index | ||
| ) |
| void QListBox::changeItem | ( | const QListBoxItem * | lbi, |
| int | index | ||
| ) |
Replaces the item at position index with lbi. If index is negative or too large, changeItem() does nothing.
The item that has been changed will become selected.
| void QListBox::clear | ( | void | ) | [slot] |
Deletes all the items in the list.
| void QListBox::clear | ( | ) | [slot] |
| void QListBox::clearInputString | ( | ) | [protected, slot] |
| void QListBox::clearInputString | ( | ) | [protected, slot] |
| void QListBox::clearSelection | ( | ) | [virtual, slot] |
Deselects all items, if possible.
Note that a Single selection list box will automatically select an item if it has keyboard focus.
| virtual void QListBox::clearSelection | ( | ) | [virtual, slot] |
| void QListBox::clicked | ( | QListBoxItem * | item | ) | [signal] |
This signal is emitted when the user clicks any mouse button. If item is not 0, the cursor is on item. If item is 0, the mouse cursor isn't on any item.
Note that you must not delete any QListBoxItem objects in slots connected to this signal.
| void QListBox::clicked | ( | QListBoxItem * | item, |
| const QPoint & | pnt | ||
| ) | [signal] |
Esta es una función miembro sobrecargada que se suministra por conveniencia. Difiere de la anterior función solamente en los argumentos que acepta.
This signal is emitted when the user clicks any mouse button. If item is not 0, the cursor is on item. If item is 0, the mouse cursor isn't on any item.
pnt is the position of the mouse cursor in the global coordinate system (QMouseEvent::globalPos()). (If the click's press and release differs by a pixel or two, pnt is the position at release time.)
Note that you must not delete any QListBoxItem objects in slots connected to this signal.
| void QListBox::clicked | ( | QListBoxItem * | ) | [signal] |
| void QListBox::clicked | ( | QListBoxItem * | , |
| const QPoint & | |||
| ) | [signal] |
| LayoutMode QListBox::columnMode | ( | ) | const |
| LayoutMode QListBox::columnMode | ( | ) | const |
| void QListBox::contentsContextMenuEvent | ( | QContextMenuEvent * | e | ) | [protected, virtual] |
This event handler is called whenever the QScrollView receives a contextMenuEvent() in {e}: the mouse position is translated to be a point on the contents.
Reimplementado de QScrollView.
| void QListBox::contentsContextMenuEvent | ( | QContextMenuEvent * | e | ) | [protected, virtual] |
Reimplementado de QScrollView.
| void QListBox::contextMenuRequested | ( | QListBoxItem * | item, |
| const QPoint & | pos | ||
| ) | [signal] |
This signal is emitted when the user invokes a context menu with the right mouse button or with special system keys, with item being the item under the mouse cursor or the current item, respectively.
pos is the position for the context menu in the global coordinate system.
| void QListBox::contextMenuRequested | ( | QListBoxItem * | , |
| const QPoint & | |||
| ) | [signal] |
| uint QListBox::count | ( | ) | const |
| uint QListBox::count | ( | ) | const |
| void QListBox::currentChanged | ( | QListBoxItem * | item | ) | [signal] |
This signal is emitted when the user makes a new item the current item. item is the new current list box item.
| void QListBox::currentChanged | ( | QListBoxItem * | ) | [signal] |
| int QListBox::currentItem | ( | ) | const |
| int QListBox::currentItem | ( | ) | const |
| QString QListBox::currentText | ( | ) | const [inline] |
| QString QListBox::currentText | ( | ) | const [inline] |
| void QListBox::doLayout | ( | ) | const [protected] |
This function does the hard layout work. You should never need to call it.
| void QListBox::doLayout | ( | ) | const [protected] |
| void QListBox::doubleClicked | ( | QListBoxItem * | item | ) | [signal] |
This signal is emitted whenever an item is double-clicked. It's emitted on the second button press, not the second button release. If item is not 0, the cursor is on item. If item is 0, the mouse cursor isn't on any item.
| void QListBox::doubleClicked | ( | QListBoxItem * | ) | [signal] |
| bool QListBox::dragSelect | ( | ) | const [inline] |
| bool QListBox::dragSelect | ( | ) | const [inline] |
| void QListBox::ensureCurrentVisible | ( | ) | [virtual, slot] |
Ensures that the current item is visible.
| virtual void QListBox::ensureCurrentVisible | ( | ) | [virtual, slot] |
This event filter ensures the scroll bars are updated when a single contents widget is resized, shown, hidden or destroyed; it passes mouse events to the QScrollView. The event is in e and the object is in obj.
Reimplementado de QScrollView.
Reimplementado de QScrollView.
| QListBoxItem * QListBox::findItem | ( | const QString & | text, |
| ComparisonFlags | compare = BeginsWith |
||
| ) | const |
Finds the first list box item that has the text text and returns it, or returns 0 of no such item could be found. The search starts from the current item if the current item exists, otherwise it starts from the first list box item. If ComparisonFlags are specified in compare then these flags are used, otherwise the default is a case-insensitive, "begins
with" search.
| QListBoxItem* QListBox::findItem | ( | const QString & | text, |
| ComparisonFlags | compare = BeginsWith |
||
| ) | const |
| QListBoxItem * QListBox::firstItem | ( | ) | const |
Returns the first item in this list box. If the list box is empty, returns 0.
| QListBoxItem* QListBox::firstItem | ( | ) | const |
| void QListBox::focusInEvent | ( | QFocusEvent * | ) | [protected, virtual] |
This event handler can be reimplemented in a subclass to receive keyboard focus events (focus received) for the widget.
A widget normally must setFocusPolicy() to something other than NoFocus in order to receive focus events. (Note that the application programmer can call setFocus() on any widget, even those that do not normally accept focus.)
The default implementation updates the widget (except for toplevel widgets that do not specify a focusPolicy() ). It also calls setMicroFocusHint(), hinting any system-specific input tools about the focus of the user's attention.
Reimplementado de QWidget.
| void QListBox::focusInEvent | ( | QFocusEvent * | e | ) | [protected, virtual] |
Reimplementado de QWidget.
| void QListBox::focusOutEvent | ( | QFocusEvent * | ) | [protected, virtual] |
This event handler can be reimplemented in a subclass to receive keyboard focus events (focus lost) for the widget.
A widget normally must setFocusPolicy() to something other than NoFocus in order to receive focus events. (Note that the application programmer can call setFocus() on any widget, even those that do not normally accept focus.)
The default implementation updates the widget (except for toplevel widgets that do not specify a focusPolicy() ). It also calls setMicroFocusHint(), hinting any system-specific input tools about the focus of the user's attention.
Reimplementado de QWidget.
| void QListBox::focusOutEvent | ( | QFocusEvent * | e | ) | [protected, virtual] |
Reimplementado de QWidget.
| void QListBox::highlighted | ( | int | index | ) | [signal] |
This signal is emitted when the user makes a new item the current item. index is the index of the new current item.
| void QListBox::highlighted | ( | const QString & | t0 | ) | [signal] |
Esta es una función miembro sobrecargada que se suministra por conveniencia. Difiere de la anterior función solamente en los argumentos que acepta.
This signal is emitted when the user makes a new item the current item and the item is (or has) a string. The argument is the text of the new current item.
| void QListBox::highlighted | ( | QListBoxItem * | t0 | ) | [signal] |
Esta es una función miembro sobrecargada que se suministra por conveniencia. Difiere de la anterior función solamente en los argumentos que acepta.
This signal is emitted when the user makes a new item the current item. The argument is a pointer to the new current item.
| void QListBox::highlighted | ( | int | index | ) | [signal] |
| void QListBox::highlighted | ( | const QString & | ) | [signal] |
| void QListBox::highlighted | ( | QListBoxItem * | ) | [signal] |
| int QListBox::index | ( | const QListBoxItem * | lbi | ) | const |
Returns the index of lbi, or -1 if the item is not in this list box or lbi is 0.
| int QListBox::index | ( | const QListBoxItem * | ) | const |
| void QListBox::insertItem | ( | const QListBoxItem * | lbi, |
| const QListBoxItem * | after | ||
| ) |
Esta es una función miembro sobrecargada que se suministra por conveniencia. Difiere de la anterior función solamente en los argumentos que acepta. Inserts the item lbi into the list after the item after, or at the beginning if after is 0.
| void QListBox::insertItem | ( | const QListBoxItem * | , |
| int | index = -1 |
||
| ) |
| void QListBox::insertItem | ( | const QListBoxItem * | , |
| const QListBoxItem * | after | ||
| ) |
Esta es una función miembro sobrecargada que se suministra por conveniencia. Difiere de la anterior función solamente en los argumentos que acepta. Inserts a new list box pixmap item with the pixmap pixmap into the list at position index.
If index is negative, pixmap is inserted at the end of the list.
Esta es una función miembro sobrecargada que se suministra por conveniencia. Difiere de la anterior función solamente en los argumentos que acepta. Inserts a new list box pixmap item with the pixmap pixmap and the text text into the list at position index.
If index is negative, pixmap is inserted at the end of the list.
Esta es una función miembro sobrecargada que se suministra por conveniencia. Difiere de la anterior función solamente en los argumentos que acepta. Inserts a new list box text item with the text text into the list at position index.
If index is negative, text is inserted at the end of the list.
| void QListBox::insertItem | ( | const QListBoxItem * | lbi, |
| int | index = -1 |
||
| ) |
Inserts the item lbi into the list at position index.
If index is negative or larger than the number of items in the list box, lbi is inserted at the end of the list.
| void QListBox::insertStringList | ( | const QStringList & | , |
| int | index = -1 |
||
| ) |
| void QListBox::insertStringList | ( | const QStringList & | list, |
| int | index = -1 |
||
| ) |
Inserts the string list list into the list at position index.
If index is negative, list is inserted at the end of the list. If index is too large, the operation is ignored.
Inserts the string list list into the list at position index.
If index is negative, list is inserted at the end of the list. If index is too large, the operation is ignored.
Esta es una función miembro sobrecargada que se suministra por conveniencia. Difiere de la anterior función solamente en los argumentos que acepta. Inserts the string list list into the list at position index.
If index is negative, list is inserted at the end of the list. If index is too large, the operation is ignored.
Esta es una función miembro sobrecargada que se suministra por conveniencia. Difiere de la anterior función solamente en los argumentos que acepta. Inserts the numStrings strings of the array strings into the list at position index.
If index is negative, insertStrList() inserts strings at the end of the list. If index is too large, the operation is ignored.
| int QListBox::inSort | ( | const QListBoxItem * | lbi | ) |
Using this method is quite inefficient. We suggest to use insertItem() for inserting and sort() afterwards.
Inserts lbi at its sorted position in the list box and returns the position.
All items must be inserted with inSort() to maintain the sorting order. inSort() treats any pixmap (or user-defined type) as lexicographically less than any string.
Esta es una función miembro sobrecargada que se suministra por conveniencia. Difiere de la anterior función solamente en los argumentos que acepta. Using this method is quite inefficient. We suggest to use insertItem() for inserting and sort() afterwards.
Inserts a new item of text at its sorted position in the list box and returns the position.
All items must be inserted with inSort() to maintain the sorting order. inSort() treats any pixmap (or user-defined type) as lexicographically less than any string.
| int QListBox::inSort | ( | const QListBoxItem * | ) |
| void QListBox::invertSelection | ( | ) | [virtual, slot] |
Inverts the selection. Only works in Multi and Extended selection mode.
| virtual void QListBox::invertSelection | ( | ) | [virtual, slot] |
| bool QListBox::isMultiSelection | ( | ) | const |
| bool QListBox::isMultiSelection | ( | ) | const |
| bool QListBox::isRubberSelecting | ( | ) | const [protected] |
Returns TRUE if the user is selecting items using a rubber band rectangle; otherwise returns FALSE.
| bool QListBox::isRubberSelecting | ( | ) | const [protected] |
Returns TRUE if item i is selected; otherwise returns FALSE.
| bool QListBox::isSelected | ( | const QListBoxItem * | i | ) | const |
Esta es una función miembro sobrecargada que se suministra por conveniencia. Difiere de la anterior función solamente en los argumentos que acepta. Returns TRUE if item i is selected; otherwise returns FALSE.
| bool QListBox::isSelected | ( | const QListBoxItem * | ) | const |
| QListBoxItem * QListBox::item | ( | int | index | ) | const |
Returns a pointer to the item at position index, or 0 if index is out of bounds.
| QListBoxItem* QListBox::item | ( | int | index | ) | const |
| QListBoxItem * QListBox::itemAt | ( | const QPoint & | p | ) | const |
Returns the item at point p, specified in viewport coordinates, or a 0 if there is no item at p.
Use contentsToViewport() to convert between widget coordinates and viewport coordinates.
| QListBoxItem* QListBox::itemAt | ( | const QPoint & | ) | const |
Returns the height in pixels of the item with index index. index defaults to 0.
If index is too large, this function returns 0.
| QRect QListBox::itemRect | ( | QListBoxItem * | item | ) | const |
Returns the rectangle on the screen that item occupies in viewport()'s coordinates, or an invalid rectangle if item is 0 or is not currently visible.
| QRect QListBox::itemRect | ( | QListBoxItem * | item | ) | const |
Returns TRUE if the item at position index is at least partly visible; otherwise returns FALSE.
| bool QListBox::itemVisible | ( | const QListBoxItem * | item | ) |
Esta es una función miembro sobrecargada que se suministra por conveniencia. Difiere de la anterior función solamente en los argumentos que acepta. Returns TRUE if item is at least partly visible; otherwise returns FALSE.
| bool QListBox::itemVisible | ( | const QListBoxItem * | ) |
Returns the vertical pixel-coordinate in *yPos, of the list box item at position index in the list. Returns FALSE if the item is outside the visible area.
| void QListBox::keyPressEvent | ( | QKeyEvent * | e | ) | [protected, virtual] |
This event handler, for event e, can be reimplemented in a subclass to receive key press events for the widget.
A widget must call setFocusPolicy() to accept focus initially and have focus in order to receive a key press event.
If you reimplement this handler, it is very important that you explicitly ignore the event if you do not understand it, so that the widget's parent can interpret it; otherwise, the event will be implicitly accepted. Although top-level widgets are able to choose whether to accept or ignore unknown events because they have no parent widgets that could otherwise handle them, it is good practice to explicitly ignore events to make widgets as reusable as possible.
The default implementation closes popup widgets if the user presses Esc. Otherwise the event is ignored.
Reimplementado de QWidget.
| long QListBox::maxItemWidth | ( | ) | const |
| long QListBox::maxItemWidth | ( | ) | const |
Returns the width of the widest item in the list box.
| QSize QListBox::minimumSizeHint | ( | ) | const [virtual] |
Reimplementado de QScrollView.
| QSize QListBox::minimumSizeHint | ( | ) | const [virtual] |
Reimplementado de QScrollView.
| void QListBox::mouseButtonClicked | ( | int | , |
| QListBoxItem * | , | ||
| const QPoint & | |||
| ) | [signal] |
| void QListBox::mouseButtonClicked | ( | int | button, |
| QListBoxItem * | item, | ||
| const QPoint & | pos | ||
| ) | [signal] |
This signal is emitted when the user clicks mouse button button. If item is not 0, the cursor is on item. If item is 0, the mouse cursor isn't on any item.
pos is the position of the mouse cursor in the global coordinate system (QMouseEvent::globalPos()). (If the click's press and release differs by a pixel or two, pos is the position at release time.)
Note that you must not delete any QListBoxItem objects in slots connected to this signal.
| void QListBox::mouseButtonPressed | ( | int | button, |
| QListBoxItem * | item, | ||
| const QPoint & | pos | ||
| ) | [signal] |
This signal is emitted when the user presses mouse button button. If item is not 0, the cursor is on item. If item is 0, the mouse cursor isn't on any item.
pos is the position of the mouse cursor in the global coordinate system (QMouseEvent::globalPos()).
Note that you must not delete any QListBoxItem objects in slots connected to this signal.
| void QListBox::mouseButtonPressed | ( | int | , |
| QListBoxItem * | , | ||
| const QPoint & | |||
| ) | [signal] |
| void QListBox::mouseDoubleClickEvent | ( | QMouseEvent * | e | ) | [protected, virtual] |
Reimplementado de QScrollView.
| void QListBox::mouseDoubleClickEvent | ( | QMouseEvent * | e | ) | [protected, virtual] |
Reimplementado de QScrollView.
| void QListBox::mouseMoveEvent | ( | QMouseEvent * | e | ) | [protected, virtual] |
Reimplementado de QScrollView.
| void QListBox::mouseMoveEvent | ( | QMouseEvent * | e | ) | [protected, virtual] |
Reimplementado de QScrollView.
| void QListBox::mousePressEvent | ( | QMouseEvent * | e | ) | [protected, virtual] |
Reimplementado de QScrollView.
| void QListBox::mousePressEvent | ( | QMouseEvent * | e | ) | [protected, virtual] |
Reimplementado de QScrollView.
| void QListBox::mouseReleaseEvent | ( | QMouseEvent * | e | ) | [protected, virtual] |
Reimplementado de QScrollView.
| void QListBox::mouseReleaseEvent | ( | QMouseEvent * | e | ) | [protected, virtual] |
Reimplementado de QScrollView.
| int QListBox::numCols | ( | ) | const [inline] |
Returns the number of columns.
| int QListBox::numCols | ( | ) | const [inline] |
| int QListBox::numColumns | ( | ) | const |
| int QListBox::numColumns | ( | ) | const |
| int QListBox::numItemsVisible | ( | ) | const |
| int QListBox::numItemsVisible | ( | ) | const |
| int QListBox::numRows | ( | ) | const |
| int QListBox::numRows | ( | ) | const |
| void QListBox::onItem | ( | QListBoxItem * | item | ) | [signal] |
| void QListBox::onItem | ( | QListBoxItem * | i | ) | [signal] |
This signal is emitted when the user moves the mouse cursor onto an item, similar to the QWidget::enterEvent() function. i is the QListBoxItem that the mouse has moved on.
| void QListBox::onViewport | ( | ) | [signal] |
| void QListBox::onViewport | ( | ) | [signal] |
This signal is emitted when the user moves the mouse cursor from an item to an empty part of the list box.
Provided for compatibility with the old QListBox. We recommend using QListBoxItem::paint() instead.
Repaints the cell at row, col using painter p.
Returns a pointer to the pixmap at position index, or 0 if there is no pixmap there.
| void QListBox::pressed | ( | QListBoxItem * | , |
| const QPoint & | |||
| ) | [signal] |
| void QListBox::pressed | ( | QListBoxItem * | item | ) | [signal] |
This signal is emitted when the user presses any mouse button. If item is not 0, the cursor is on item. If item is 0, the mouse cursor isn't on any item.
Note that you must not delete any QListBoxItem objects in slots connected to this signal.
| void QListBox::pressed | ( | QListBoxItem * | item, |
| const QPoint & | pnt | ||
| ) | [signal] |
Esta es una función miembro sobrecargada que se suministra por conveniencia. Difiere de la anterior función solamente en los argumentos que acepta.
This signal is emitted when the user presses any mouse button. If item is not 0, the cursor is on item. If item is 0, the mouse cursor isn't on any item.
pnt is the position of the mouse cursor in the global coordinate system (QMouseEvent::globalPos()).
Note that you must not delete any QListBoxItem objects in slots connected to this signal.
| void QListBox::pressed | ( | QListBoxItem * | ) | [signal] |
| void QListBox::removeItem | ( | int | index | ) |
| void QListBox::removeItem | ( | int | index | ) |
Removes and deletes the item at position index. If index is equal to currentItem(), a new item becomes current and the currentChanged() and highlighted() signals are emitted.
| void QListBox::resizeEvent | ( | QResizeEvent * | e | ) | [protected, virtual] |
Reimplementado de QScrollView.
| void QListBox::resizeEvent | ( | QResizeEvent * | event | ) | [protected, virtual] |
Reimplementado de QScrollView.
| void QListBox::returnPressed | ( | QListBoxItem * | ) | [signal] |
| void QListBox::returnPressed | ( | QListBoxItem * | t0 | ) | [signal] |
This signal is emitted when Enter or Return is pressed. The argument is currentItem().
| void QListBox::rightButtonClicked | ( | QListBoxItem * | t0, |
| const QPoint & | t1 | ||
| ) | [signal] |
This signal is emitted when the right button is clicked (i.e. when it's released at the same point where it was pressed). The arguments are the relevant QListBoxItem (may be 0) and the point in global coordinates.
| void QListBox::rightButtonClicked | ( | QListBoxItem * | , |
| const QPoint & | |||
| ) | [signal] |
| void QListBox::rightButtonPressed | ( | QListBoxItem * | , |
| const QPoint & | |||
| ) | [signal] |
| void QListBox::rightButtonPressed | ( | QListBoxItem * | t0, |
| const QPoint & | t1 | ||
| ) | [signal] |
This signal is emitted when the right button is pressed. The arguments are the relevant QListBoxItem (may be 0) and the point in global coordinates.
| LayoutMode QListBox::rowMode | ( | ) | const |
| LayoutMode QListBox::rowMode | ( | ) | const |
| bool QListBox::scrollBar | ( | ) | const [inline] |
Returns FALSE if vScrollBarMode() is AlwaysOff; otherwise returns TRUE.
| bool QListBox::scrollBar | ( | ) | const [inline] |
| void QListBox::selectAll | ( | bool | select | ) | [virtual, slot] |
In Multi and Extended modes, this function sets all items to be selected if select is TRUE, and to be unselected if select is FALSE.
In Single and NoSelection modes, this function only changes the selection status of currentItem().
| virtual void QListBox::selectAll | ( | bool | select | ) | [virtual, slot] |
| void QListBox::selected | ( | const QString & | t0 | ) | [signal] |
Esta es una función miembro sobrecargada que se suministra por conveniencia. Difiere de la anterior función solamente en los argumentos que acepta.
This signal is emitted when the user double-clicks on an item or presses Enter on the current item, and the item is (or has) a string. The argument is the text of the selected item.
| void QListBox::selected | ( | QListBoxItem * | t0 | ) | [signal] |
Esta es una función miembro sobrecargada que se suministra por conveniencia. Difiere de la anterior función solamente en los argumentos que acepta.
This signal is emitted when the user double-clicks on an item or presses Enter on the current item. The argument is a pointer to the new selected item.
| void QListBox::selected | ( | int | index | ) | [signal] |
| void QListBox::selected | ( | int | index | ) | [signal] |
This signal is emitted when the user double-clicks on an item or presses Enter on the current item. index is the index of the selected item.
| void QListBox::selected | ( | const QString & | ) | [signal] |
| void QListBox::selected | ( | QListBoxItem * | ) | [signal] |
| QListBoxItem * QListBox::selectedItem | ( | ) | const |
Returns the selected item if the list box is in single-selection mode and an item is selected.
If no items are selected or the list box is in another selection mode this function returns 0.
| QListBoxItem* QListBox::selectedItem | ( | ) | const |
| void QListBox::selectionChanged | ( | QListBoxItem * | ) | [signal] |
| void QListBox::selectionChanged | ( | ) | [signal] |
| void QListBox::selectionChanged | ( | ) | [signal] |
This signal is emitted when the selection set of a list box changes. This signal is emitted in each selection mode. If the user selects five items by drag-selecting, QListBox tries to emit just one selectionChanged() signal so the signal can be connected to computationally expensive slots.
| void QListBox::selectionChanged | ( | QListBoxItem * | item | ) | [signal] |
Esta es una función miembro sobrecargada que se suministra por conveniencia. Difiere de la anterior función solamente en los argumentos que acepta.
This signal is emitted when the selection in a Single selection list box changes. item is the newly selected list box item.
| SelectionMode QListBox::selectionMode | ( | ) | const |
| SelectionMode QListBox::selectionMode | ( | ) | const |
| void QListBox::setAutoBottomScrollBar | ( | bool | enable | ) | [inline] |
| void QListBox::setAutoBottomScrollBar | ( | bool | enable | ) | [inline] |
If enable is TRUE sets setHScrollBarMode() to AlwaysOn; otherwise sets setHScrollBarMode() to AlwaysOff.
| void QListBox::setAutoScroll | ( | bool | ) | [inline] |
| void QListBox::setAutoScroll | ( | bool | ) | [inline] |
| void QListBox::setAutoScrollBar | ( | bool | enable | ) | [inline] |
If enable is TRUE sets setVScrollBarMode() to AlwaysOn; otherwise sets setVScrollBarMode() to AlwaysOff.
| void QListBox::setAutoScrollBar | ( | bool | enable | ) | [inline] |
| void QListBox::setAutoUpdate | ( | bool | ) | [inline] |
| void QListBox::setAutoUpdate | ( | bool | ) | [inline] |
| virtual void QListBox::setBottomItem | ( | int | index | ) | [virtual] |
| void QListBox::setBottomItem | ( | int | index | ) | [virtual] |
Scrolls the list box so the item at position index in the list is displayed in the bottom row of the list box.
| void QListBox::setBottomScrollBar | ( | bool | enable | ) | [inline] |
If enable is TRUE sets setHScrollBarMode() to AlwaysOn; otherwise sets setHScrollBarMode() to AlwaysOff.
| void QListBox::setBottomScrollBar | ( | bool | enable | ) | [inline] |
| virtual void QListBox::setColumnMode | ( | int | ) | [virtual] |
| virtual void QListBox::setColumnMode | ( | LayoutMode | ) | [virtual] |
| void QListBox::setColumnMode | ( | LayoutMode | mode | ) | [virtual] |
| void QListBox::setColumnMode | ( | int | columns | ) | [virtual] |
| void QListBox::setCurrentItem | ( | QListBoxItem * | i | ) | [virtual] |
Esta es una función miembro sobrecargada que se suministra por conveniencia. Difiere de la anterior función solamente en los argumentos que acepta. Sets the current item to the QListBoxItem i.
| void QListBox::setCurrentItem | ( | int | index | ) | [virtual] |
| virtual void QListBox::setCurrentItem | ( | QListBoxItem * | ) | [virtual] |
| virtual void QListBox::setCurrentItem | ( | int | index | ) | [virtual] |
| void QListBox::setDragSelect | ( | bool | ) | [inline] |
| void QListBox::setDragSelect | ( | bool | ) | [inline] |
| void QListBox::setFixedVisibleLines | ( | int | lines | ) | [inline] |
| void QListBox::setFixedVisibleLines | ( | int | lines | ) | [inline] |
| void QListBox::setMultiSelection | ( | bool | multi | ) |
| void QListBox::setMultiSelection | ( | bool | multi | ) |
| virtual void QListBox::setRowMode | ( | int | ) | [virtual] |
| void QListBox::setRowMode | ( | int | rows | ) | [virtual] |
| void QListBox::setRowMode | ( | LayoutMode | mode | ) | [virtual] |
| virtual void QListBox::setRowMode | ( | LayoutMode | ) | [virtual] |
| void QListBox::setScrollBar | ( | bool | enable | ) | [inline] |
If enable is TRUE sets setVScrollBarMode() to AlwaysOn; otherwise sets setVScrollBarMode() to AlwaysOff.
| void QListBox::setScrollBar | ( | bool | enable | ) | [inline] |
| void QListBox::setSelected | ( | QListBoxItem * | item, |
| bool | select | ||
| ) | [virtual] |
Selects item if select is TRUE or unselects it if select is FALSE, and repaints the item appropriately.
If the list box is a Single selection list box and select is TRUE, setSelected() calls setCurrentItem().
If the list box is a Single selection list box, select is FALSE, setSelected() calls clearSelection().
| virtual void QListBox::setSelected | ( | QListBoxItem * | , |
| bool | |||
| ) | [virtual] |
Esta es una función miembro sobrecargada que se suministra por conveniencia. Difiere de la anterior función solamente en los argumentos que acepta. If select is TRUE the item at position index is selected; otherwise the item is deselected.
| virtual void QListBox::setSelectionMode | ( | SelectionMode | ) | [virtual] |
| void QListBox::setSelectionMode | ( | SelectionMode | mode | ) | [virtual] |
| void QListBox::setSmoothScrolling | ( | bool | ) | [inline] |
| void QListBox::setSmoothScrolling | ( | bool | ) | [inline] |
| virtual void QListBox::setTopItem | ( | int | index | ) | [virtual] |
| void QListBox::setTopItem | ( | int | index | ) | [virtual] |
| virtual void QListBox::setVariableHeight | ( | bool | ) | [virtual] |
| void QListBox::setVariableHeight | ( | bool | enable | ) | [virtual] |
| void QListBox::setVariableWidth | ( | bool | enable | ) | [virtual] |
| virtual void QListBox::setVariableWidth | ( | bool | ) | [virtual] |
| void QListBox::showEvent | ( | QShowEvent * | ) | [protected, virtual] |
This event handler can be reimplemented in a subclass to receive widget show events.
Non-spontaneous show events are sent to widgets immediately before they are shown. The spontaneous show events of top-level widgets are delivered afterwards.
Reimplementado de QWidget.
| void QListBox::showEvent | ( | QShowEvent * | ) | [protected, virtual] |
Reimplementado de QWidget.
| QSize QListBox::sizeHint | ( | ) | const [virtual] |
Reimplementado de QScrollView.
| QSize QListBox::sizeHint | ( | ) | const [virtual] |
Reimplementado de QScrollView.
| bool QListBox::smoothScrolling | ( | ) | const [inline] |
| bool QListBox::smoothScrolling | ( | ) | const [inline] |
| void QListBox::sort | ( | bool | ascending = TRUE | ) |
If ascending is TRUE sorts the items in ascending order; otherwise sorts in descending order.
To compare the items, the text (QListBoxItem::text()) of the items is used.
| void QListBox::sort | ( | bool | ascending = TRUE | ) |
| void QListBox::takeItem | ( | const QListBoxItem * | item | ) |
Removes item from the list box and causes an update of the screen display. The item is not deleted. You should normally not need to call this function because QListBoxItem::~QListBoxItem() calls it. The normal way to delete an item is with delete.
| void QListBox::takeItem | ( | const QListBoxItem * | ) |
Returns the text at position index, or QString::null if there is no text at that position.
| void QListBox::toggleCurrentItem | ( | ) | [protected] |
Toggles the selection status of currentItem() and repaints if the list box is a Multi selection list box.
| void QListBox::toggleCurrentItem | ( | ) | [protected] |
| int QListBox::topItem | ( | ) | const |
| int QListBox::topItem | ( | ) | const |
| int QListBox::totalHeight | ( | ) | const [inline, protected] |
Returns contentsHeight().
| int QListBox::totalHeight | ( | ) | const [inline, protected] |
| int QListBox::totalWidth | ( | ) | const [inline, protected] |
| int QListBox::totalWidth | ( | ) | const [inline, protected] |
Returns contentsWidth().
| void QListBox::triggerUpdate | ( | bool | doLayout | ) |
| void QListBox::triggerUpdate | ( | bool | doLayout | ) |
Ensures that a single paint event will occur at the end of the current event loop iteration. If doLayout is TRUE, the layout is also redone.
| void QListBox::updateCellWidth | ( | ) | [inline, protected] |
| void QListBox::updateCellWidth | ( | ) | [inline, protected] |
| void QListBox::updateItem | ( | QListBoxItem * | i | ) | [protected] |
Esta es una función miembro sobrecargada que se suministra por conveniencia. Difiere de la anterior función solamente en los argumentos que acepta. Repaints the QListBoxItem i.
| void QListBox::updateItem | ( | QListBoxItem * | ) | [protected] |
| void QListBox::updateItem | ( | int | index | ) | [protected] |
| void QListBox::updateItem | ( | int | index | ) | [protected] |
Repaints the item at position index in the list.
| bool QListBox::variableHeight | ( | ) | const |
| bool QListBox::variableHeight | ( | ) | const |
| bool QListBox::variableWidth | ( | ) | const |
| bool QListBox::variableWidth | ( | ) | const |
| void QListBox::viewportPaintEvent | ( | QPaintEvent * | e | ) | [virtual] |
Reimplementado de QScrollView.
| void QListBox::viewportPaintEvent | ( | QPaintEvent * | pe | ) | [virtual] |
This is a low-level painting routine that draws the viewport contents. Reimplement this if drawContents() is too high-level (for example, if you don't want to open a QPainter on the viewport). The paint event is passed in pe.
Reimplementado de QScrollView.
| void QListBox::windowActivationChange | ( | bool | oldActive | ) | [protected, virtual] |
This virtual function is called for a widget when its window is activated or deactivated by the window system. oldActive is the previous state; you can get the new setting from isActiveWindow().
Reimplement this function if your widget needs to know when its window becomes activated or deactivated.
The default implementation updates the visible part of the widget if the inactive and the active colorgroup are different for colors other than the highlight and link colors.
Reimplementado de QWidget.
| void QListBox::windowActivationChange | ( | bool | oldActive | ) | [protected, virtual] |
Reimplementado de QWidget.
QListBoxItem [friend] |
QListBoxPrivate [friend] |
LayoutMode QListBox::columnMode [read, write] |
the column layout mode for this list box.
setColumnMode() sets the layout mode and adjusts the number of displayed columns. The row layout mode automatically becomes Variable, unless the column mode is Variable.
uint QListBox::count [read] |
the number of items in the list box
int QListBox::currentItem [read, write] |
the current highlighted item
When setting this property, the highlighting is moved to the item and the list box scrolled as necessary.
If no item is current, currentItem() returns -1.
QString QListBox::currentText [read] |
the text of the current item.
This is equivalent to text(currentItem()).
bool QListBox::multiSelection [read, write] |
whether or not the list box is in Multi selection mode
Consider using the QListBox::selectionMode property instead of this property.
When setting this property, Multi selection mode is used if set to TRUE and to Single selection mode if set to FALSE.
When getting this property, TRUE is returned if the list box is in Multi selection mode or Extended selection mode, and FALSE if it is in Single selection mode or NoSelection mode.
int QListBox::numColumns [read] |
the number of columns in the list box
This is normally 1, but can be different if QListBox::columnMode or QListBox::rowMode has been set.
int QListBox::numItemsVisible [read] |
the number of visible items.
Both partially and entirely visible items are counted.
int QListBox::numRows [read] |
the number of rows in the list box.
This is equal to the number of items in the default single-column layout, but can be different.
LayoutMode QListBox::rowMode [read, write] |
the row layout mode for this list box
This property is normally Variable.
setRowMode() sets the layout mode and adjusts the number of displayed rows. The column layout mode automatically becomes Variable, unless the row mode is Variable.
SelectionMode QListBox::selectionMode [read, write] |
the selection mode of the list box
Sets the list box's selection mode, which may be one of Single (the default), Extended, Multi or NoSelection.
int QListBox::topItem [read, write] |
the index of an item at the top of the screen.
When getting this property and the listbox has multiple columns, an arbitrary item is selected and returned.
When setting this property, the list box is scrolled so the item at position index in the list is displayed in the top row of the list box.
bool QListBox::variableHeight [read, write] |
whether this list box has variable-height rows
When the list box has variable-height rows (the default), each row is as high as the highest item in that row. When it has same-sized rows, all rows are as high as the highest item in the list box.
bool QListBox::variableWidth [read, write] |
whether this list box has variable-width columns
When the list box has variable-width columns, each column is as wide as the widest item in that column. When it has same-sized columns (the default), all columns are as wide as the widest item in the list box.
1.7.4