enumeration
type refers to a named enumeration value.
Each named value can be referred to as
<Type>.<value>
. For example, the
文本
type has an
AlignRight
enumeration value:
Text { horizontalAlignment: Text.AlignRight }
(For backwards compatibility, the enumeration value may also be specified as a string, e.g. "AlignRight". This form is not recommended for new code.)
When integrating with C++, note that any
enum
值
passed into QML from C++
is automatically converted into an
enumeration
value, and vice-versa.
This basic type is provided by the QML language. Some enumeration values are provided by the QtQuick 导入。
enumeration
type is a representation of a C++
enum
type. It is not possible to refer to the
enumeration
type in QML itself; instead, the
int
or
var
types can be used when referring to
enumeration
values from QML code.
例如:
import QtQuick 2.0 Item { // refer to Text.AlignRight using an int type property int enumValue: textItem.horizontalAlignment signal valueEmitted(int someValue) Text { id: textItem horizontalAlignment: Text.AlignRight } // emit valueEmitted() signal, which expects an int, with Text.AlignRight Component.onCompleted: valueEmitted(Text.AlignRight) }