QAbstractItemDelegate QAbstractItemDelegate

Qabstractitemdelegate sizehint not called dating, public types

The object exposes a writable attribute 'destroyed'. Returns a value indicating whether the reference is a const reference Use of this method is deprecated. Note that the index contains information about the model being used. A return value of true indicates that the data obtained using the index had the required role.

Mouse events are sent to editorEvent even if they don't start editing of the item. If you want custom editing you will need to reimplement this function. Although models and views should respond to these hints in appropriate ways, custom components may ignore any or all of them if they are not relevant.

If you want custom editing you must reimplement this function. Returns true if the delegate can handle the event; otherwise returns false. The base implementation does nothing. The object exposes a writable attribute 'sizeHintChanged'. The options are specified by option and the model item by index.

However, it is sometimes necessary to have even more control over the appearance of items than the default delegate can provide. Use the painter and style option to render the item specified by the item index.

Qabstractitemdelegate.cpp

ItemDataRole with certain data types. Although models and views should respond to these hints in appropriate ways, custom components qabstractitemdelegate sizehint not called dating ignore any or all of them if they are not relevant.

For example, if EditNextItem is specified, the view should use a delegate to open an editor on the next item in the model. The options are specified by option and the model item by index. The closeEditor signal indicates that the user has completed editing the data, and that the editor widget can be destroyed.

QItemDelegate Class Reference

The returned editor widget yaksha demonul salbatic online dating have Qt:: Use the painter and style option to render qabstractitemdelegate sizehint not called dating item specified by the item index.

QItemDelegate can be used to provide custom display features and editor widgets for item views based on QAbstractItemView subclasses. Calling this method will make this object no longer owned by the script's memory management. Views automatically connect to this signal and relayout items as necessary.

If the item has an internal layout, the editor will be laid out accordingly. SubmitModelCache 3 If the model caches data, it should write out cached data to the underlying data store. Standard Roles and Data Types The default delegate used by the standard views supplied with Qt associates each standard role defined by Qt.

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A return value of true indicates that the data obtained using the index had the required role. Subsequent access to this object will throw an exception. If you want custom editing you will need to reimplement this function. If you reimplement this you must also reimplement paint. Returns true if the delegate can handle the event; otherwise returns false.

After calling this method on an object, the script side will be responsible for the management of the object.

The base implementation returns false indicating that it has not handled the event. Documentation contributions included herein are the copyrights of their respective owners.

Public Functions

Note that the index contains information about the model being used. The view's background will shine through unless the editor paints its own background e.

The hint provides a way for the delegate to influence how the model and view behave after editing is completed. This class provides default implementations of the functions for painting item data in a view and editing data from item models.

Class ItemDelegate

WhatsThis events that were handled successfully, the relevant popup may be shown depending on the user's system configuration. This method is the default initializer of the object paint Signature: The returned editor widget should have Qt. When displaying items from a custom model in a standard view, it is often sufficient to simply ensure that the model returns appropriate data for each of the roles that determine the appearance of items in views.

If the item has an internal layout, the editor will be laid out accordingly. Technically speaking, this method will turn the script's reference into a weak reference. Only the standard editing functions for widget-based delegates are reimplemented here: StrongFocus ; otherwise, QMouseEvent s received by the widget will propagate to the view.

Returns a value indicating whether the reference is a const reference This method returns true, if self is a const reference.

Member Type Documentation

The editor's parent widget is specified by parent, and the item options by option. If you reimplement this you must also reimplement sizeHint. Default implementations of the paint and sizeHint virtual functions, defined in QAbstractItemDelegateare provided to ensure that the delegate implements the correct basic behavior expected by views.

Qt and respective logos are trademarks of The Qt Company Ltd. It indicates to these components what action should be performed next to provide a comfortable editing experience for the user. The default behavior is a call to deleteLater on the editor. WhatsThis events that were handled successfully, the relevant popup may be shown depending on the user's system configuration.

Virtual method bool QAbstractItemDelegate:: It indicates to these components what action should be performed next to provide a comfortable editing experience for the user.

If you want custom editing you must reimplement this function. The base implementation does nothing. Views automatically connect to this signal and relayout items as necessary.

WhatsThis events that were handled successfully, the relevant popup may be shown depending on the user's system configuration. This function was introduced in Qt 4. Although models and views should respond to these hints in appropriate ways, custom components may ignore any or all of them if they are not relevant.