Qt 4.3: Q3EditorFactory Class Reference

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# Q3EditorFactory Class Reference
[Qt3Support module]

The Q3EditorFactory class is used to create editor widgets for QVariant data types. More...

     #include <Q3EditorFactory>

This class is part of the Qt 3 support library. It is provided to keep old source code working. We strongly advise against using it in new code. See Porting to Qt 4 for more information.

Note to Qt Desktop Light Edition users: This class is only available in the Qt Desktop Edition.

Inherits QObject.

Inherited by Q3SqlEditorFactory.

- List of all members, including inherited members

### Public Functions

- Q3EditorFactory ( QObject * parent = 0 )
- ~Q3EditorFactory ()
- virtual QWidget * createEditor ( QWidget * parent, const QVariant & v )

- 29 public functions inherited from QObject

### Static Public Members

- Q3EditorFactory * defaultFactory ()
- void installDefaultFactory ( Q3EditorFactory * factory )

- 5 static public members inherited from QObject

### Additional Inherited Members

- 1 property inherited from QObject
- 1 public slot inherited from QObject
- 1 signal inherited from QObject
- 7 protected functions inherited from QObject

## Detailed Description

The Q3EditorFactory class is used to create editor widgets for QVariant data types.

Each editor factory provides the createEditor() function which given a QVariant will create and return a QWidget that can edit that QVariant. For example if you have a QVariant::String type, a QLineEdit would be the default editor returned, whereas a QVariant::Int's default editor would be a QSpinBox.

If you want to create different editors for fields with the same data type, subclass Q3EditorFactory and reimplement the createEditor() function.

## Member Function Documentation

### Q3EditorFactory::Q3EditorFactory ( QObject * parent = 0 )

Constructs an editor factory with parent parent.

### Q3EditorFactory::~Q3EditorFactory ()

Destroys the object and frees any allocated resources.

### QWidget * Q3EditorFactory::createEditor ( QWidget * parent, const QVariant & v ) `[virtual]`

Creates and returns the appropriate editor for the QVariant v. If the QVariant is invalid, 0 is returned. The parent is passed to the appropriate editor's constructor.

### Q3EditorFactory * Q3EditorFactory::defaultFactory () `[static]`

Returns an instance of a default editor factory.

### void Q3EditorFactory::installDefaultFactory ( Q3EditorFactory * factory ) `[static]`

Replaces the default editor factory with factory. Q3EditorFactory takes ownership of factory, and destroys it when it is no longer needed.