QStyleHintReturn Class Reference

The QStyleHintReturn class provides style hints that return more than basic data types. Далее...

 #include <QStyleHintReturn>

Inherited by: QStyleHintReturnMask and QStyleHintReturnVariant.

Список всех членов, включая унаследованные

Открытые типы

enum	HintReturnType { SH_Default, SH_Mask, SH_Variant }
enum	StyleOptionType { Type }
enum	StyleOptionVersion { Version }

Открытые функции

QStyleHintReturn ( int version = QStyleOption::Version, int type = SH_Default )

Public Variables

int	type
int	version

Связанные нечлены класса

T	qstyleoption_cast ( const QStyleHintReturn * hint )
T	qstyleoption_cast ( QStyleHintReturn * hint )

Подробное описание

The QStyleHintReturn class provides style hints that return more than basic data types.

QStyleHintReturn and its subclasses are used to pass information from a style back to the querying widget. This is most useful when the return value from QStyle::styleHint() does not provide enough detail; for example, when a mask is to be returned.

Описание типов-членов

enum QStyleHintReturn::HintReturnType

Константа	Значение	Описание
`QStyleHintReturn::SH_Default`	`0xf000`	QStyleHintReturn
`QStyleHintReturn::SH_Mask`	?	QStyle::SH_RubberBand_Mask QStyle::SH_FocusFrame_Mask
`QStyleHintReturn::SH_Variant`	?	QStyle::SH_TextControl_FocusIndicatorTextCharFormat

enum QStyleHintReturn::StyleOptionType

This enum is used to hold information about the type of the style option, and is defined for each QStyleHintReturn subclass.

Константа	Значение	Описание
`QStyleHintReturn::Type`	`SH_Default`	The type of style option provided (SH_Default for this class).

The type is used internally by QStyleHintReturn, its subclasses, and qstyleoption_cast() to determine the type of style option. In general you do not need to worry about this unless you want to create your own QStyleHintReturn subclass and your own styles.

Смотрите также StyleOptionVersion.

enum QStyleHintReturn::StyleOptionVersion

This enum is used to hold information about the version of the style option, and is defined for each QStyleHintReturn subclass.

Константа	Значение	Описание
`QStyleHintReturn::Version`	`1`	1

The version is used by QStyleHintReturn subclasses to implement extensions without breaking compatibility. If you use qstyleoption_cast(), you normally do not need to check it.

Смотрите также StyleOptionType.

Описание функций-членов

QStyleHintReturn::QStyleHintReturn ( int version = QStyleOption::Version, int type = SH_Default )

Constructs a QStyleHintReturn with version version and type type.

The version has no special meaning for QStyleHintReturn; it can be used by subclasses to distinguish between different version of the same hint type.

See also QStyleOption::version and QStyleOption::type.

Описание типов

int QStyleHintReturn::type

This variable holds the type of the style hint container.

See also HintReturnType.

int QStyleHintReturn::version

This variable holds the version of the style hint return container.

This value can be used by subclasses to implement extensions without breaking compatibility. If you use qstyleoption_cast<T>(), you normally do not need to check it.

Связанные нечлены класса

T qstyleoption_cast ( const QStyleHintReturn * hint )

Returns a T or 0 depending on the type and version of hint.

Пример:

 int MyStyle::styleHint(StyleHint stylehint, const QStyleOption *opt,
                        const QWidget *widget, QStyleHintReturn* returnData) const;
 {
     if (stylehint == SH_RubberBand_Mask) {
         const QStyleHintReturnMask *maskReturn =
                 qstyleoption_cast<const QStyleHintReturnMask *>(hint);
         if (maskReturn) {
             ...
         }
     }
     ...
 }

T qstyleoption_cast ( QStyleHintReturn * hint )

Это перегруженная функция.

Returns a T or 0 depending on the type of hint.

Оглавление

QStyleHintReturn Class Reference

Открытые типы

Открытые функции

Public Variables

Связанные нечлены класса

Подробное описание

Описание типов-членов

enum QStyleHintReturn::HintReturnType

enum QStyleHintReturn::StyleOptionType

enum QStyleHintReturn::StyleOptionVersion

Описание функций-членов

QStyleHintReturn::QStyleHintReturn ( int version = QStyleOption::Version, int type = SH_Default )

Описание типов

int QStyleHintReturn::type

int QStyleHintReturn::version

Связанные нечлены класса

T qstyleoption_cast ( const QStyleHintReturn * hint )

T qstyleoption_cast ( QStyleHintReturn * hint )