- Qt 5.15
- Qt Widgets
- C++ Classes
- QComboBox
- Qt 5.15.19 Reference Documentation

# Obsolete Members for QComboBox

The following members of class QComboBox are obsolete. They are provided to keep old source code working. We strongly advise against using them in new code.

## Properties

- `(obsolete)` autoCompletion : bool
- `(obsolete)` autoCompletionCaseSensitivity : Qt::CaseSensitivity

## Public Functions

`(obsolete)` bool | autoCompletion() const
`(obsolete)` Qt::CaseSensitivity | autoCompletionCaseSensitivity() const
`(obsolete)` void | setAutoCompletion(bool enable)
`(obsolete)` void | setAutoCompletionCaseSensitivity(Qt::CaseSensitivity sensitivity)

## Signals

`(obsolete)` void | activated(const QString &text)
`(obsolete)` void | currentIndexChanged(const QString &text)
`(obsolete)` void | highlighted(const QString &text)

## Property Documentation

### autoCompletion : bool

This property is obsolete. It is provided to keep old source code working. We strongly advise against using it in new code.

This property holds whether the combobox provides auto-completion for editable items

Use setCompleter() instead.

By default, this property is `true`.

This property was introduced in Qt 4.1.

Access functions:

bool | autoCompletion() const
void | setAutoCompletion(bool enable)

See also editable.

### autoCompletionCaseSensitivity : Qt::CaseSensitivity

This property is obsolete. It is provided to keep old source code working. We strongly advise against using it in new code.

This property holds whether string comparisons are case-sensitive or case-insensitive for auto-completion

By default, this property is Qt::CaseInsensitive.

Use setCompleter() instead. Case sensitivity of the auto completion can be changed using QCompleter::setCaseSensitivity().

Access functions:

Qt::CaseSensitivity | autoCompletionCaseSensitivity() const
void | setAutoCompletionCaseSensitivity(Qt::CaseSensitivity sensitivity)

See also autoCompletion.

## Member Function Documentation

### `[signal]` void QComboBox::activated(const QString &text)

This function is obsolete. It is provided to keep old source code working. We strongly advise against using it in new code.

This signal is sent when the user chooses an item in the combobox. The item's text is passed. Note that this signal is sent even when the choice is not changed. If you need to know when the choice actually changes, use signal currentIndexChanged() or currentTextChanged().

Use QComboBox::textActivated() instead

Note: Signal activated is overloaded in this class. To connect to this signal by using the function pointer syntax, Qt provides a convenient helper for obtaining the function pointer as shown in this example:

     connect(comboBox, QOverload<const QString &>::of(&QComboBox::activated),
         [=](const QString &text){ /* ... */ });

### `[signal]` void QComboBox::currentIndexChanged(const QString &text)

This function is obsolete. It is provided to keep old source code working. We strongly advise against using it in new code.

This signal is sent whenever the currentIndex in the combobox changes either through user interaction or programmatically. The item's text is passed.

Use currentIndexChanged(int) and get the text from the itemText(int) method.

Note: Signal currentIndexChanged is overloaded in this class. To connect to this signal by using the function pointer syntax, Qt provides a convenient helper for obtaining the function pointer as shown in this example:

     connect(comboBox, QOverload<const QString &>::of(&QComboBox::currentIndexChanged),
         [=](const QString &text){ /* ... */ });

This function was introduced in Qt 4.1.

### `[signal]` void QComboBox::highlighted(const QString &text)

This function is obsolete. It is provided to keep old source code working. We strongly advise against using it in new code.

This signal is sent when an item in the combobox popup list is highlighted by the user. The item's text is passed.

Use textHighlighted() instead

Note: Signal highlighted is overloaded in this class. To connect to this signal by using the function pointer syntax, Qt provides a convenient helper for obtaining the function pointer as shown in this example:

     connect(comboBox, QOverload<const QString &>::of(&QComboBox::highlighted),
         [=](const QString &text){ /* ... */ });

### bool QComboBox::autoCompletion() const

This function is obsolete. It is provided to keep old source code working. We strongly advise against using it in new code.

Use completer() instead.

Note: Getter function for property autoCompletion.

See also setAutoCompletion().

### Qt::CaseSensitivity QComboBox::autoCompletionCaseSensitivity() const

This function is obsolete. It is provided to keep old source code working. We strongly advise against using it in new code.

Use setCompleter() and QCompleter::setCaseSensitivity() instead.

Note: Getter function for property autoCompletionCaseSensitivity.

See also setAutoCompletionCaseSensitivity().

### void QComboBox::setAutoCompletion(bool enable)

This function is obsolete. It is provided to keep old source code working. We strongly advise against using it in new code.

Use setCompleter() instead.

Note: Setter function for property autoCompletion.

See also autoCompletion().

### void QComboBox::setAutoCompletionCaseSensitivity(Qt::CaseSensitivity sensitivity)

This function is obsolete. It is provided to keep old source code working. We strongly advise against using it in new code.

Use setCompleter() and QCompleter::setCaseSensitivity() instead.

Note: Setter function for property autoCompletionCaseSensitivity.

See also autoCompletionCaseSensitivity().