Detailed Description
The QComboTableItem class provides a means of using
comboboxes in QTables.
A QComboTableItem is a table item which looks and behaves like a
combobox. The advantage of using QComboTableItems rather than real
comboboxes is that a QComboTableItem uses far less resources than
real comboboxes in QTables. When the cell has the focus it
displays a real combobox which the user can interact with. When
the cell does not have the focus the cell looks like a
combobox. Only text items (i.e. no pixmaps) may be used in
QComboTableItems.
QComboTableItem items have the edit type WhenCurrent (see
EditType). The QComboTableItem's list of items is provided by
a QStringList passed to the constructor.
The list of items may be changed using setStringList(). The
current item can be set with setCurrentItem() and retrieved with
currentItem(). The text of the current item can be obtained with
currentText(), and the text of a particular item can be retrieved
with text().
If isEditable() is TRUE the QComboTableItem will permit the user
to either choose an existing list item, or create a new list item
by entering their own text; otherwise the user may only choose one
of the existing list items.
To populate a table cell with a QComboTableItem use
QTable::setItem().
QComboTableItems may be deleted with QTable::clearCell().
QComboTableItems can be distinguished from QTableItems and
QCheckTableItems using their Run Time Type Identification
number (see rtti()).
See also QCheckTableItem, QTableItem, QComboBox, and Advanced Widgets.
Member Function Documentation
QComboTableItem::QComboTableItem ( QTable * table, const QStringList & list, bool editable = FALSE )
Creates a combo table item for the table table. The combobox's
list of items is passed in the list argument. If editable is
TRUE the user may type in new list items; if editable is FALSE
the user may only select from the list of items provided.
By default QComboTableItems cannot be replaced by other table
items since isReplaceable() returns FALSE by default.
See also QTable::clearCell() and EditType.
QComboTableItem::~QComboTableItem ()
QComboTableItem destructor.
int QComboTableItem::count () const
Returns the total number of list items in the combo table item.
int QComboTableItem::currentItem () const
Returns the index of the combo table item's current list item.
See also setCurrentItem().
QString QComboTableItem::currentText () const
Returns the text of the combo table item's current list item.
See also currentItem() and text().
bool QComboTableItem::isEditable () const
Returns TRUE if the user can add their own list items to the
combobox's list of items; otherwise returns FALSE.
See also setEditable().
int QComboTableItem::rtti () const [virtual]
Returns 1.
Make your derived classes return their own values for rtti()to
distinguish between different table item subclasses. You should
use values greater than 1000, preferably a large random number, to
allow for extensions to this class.
See also QTableItem::rtti().
Reimplemented from QTableItem.
void QComboTableItem::setCurrentItem ( int i ) [virtual]
Sets the list item i to be the combo table item's current list
item.
See also currentItem().
Example: table/small-table-demo/main.cpp.
void QComboTableItem::setCurrentItem ( const QString & s ) [virtual]
This is an overloaded member function, provided for convenience. It behaves essentially like the above function.
Sets the list item whose text is s to be the combo table item's
current list item. Does nothing if no list item has the text s.
See also currentItem().
void QComboTableItem::setEditable ( bool b ) [virtual]
If b is TRUE the combo table item can be edited, i.e. the user
may enter a new text item themselves. If b is FALSE the user may
may only choose one of the existing items.
See also isEditable().
void QComboTableItem::setStringList ( const QStringList & l ) [virtual]
Sets the list items of this QComboTableItem to the strings in the
string list l.
QString QComboTableItem::text ( int i ) const
Returns the text of the combo's list item at index i.
See also currentText().
This file is part of the Qt toolkit.
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Trolltech. All Rights Reserved.
