Struct qt_qml::QQmlScriptString

#[repr(C)]pub struct QQmlScriptString { /* fields omitted */ }

QQmlScriptString is used to create QObject properties that accept a script "assignment" from QML.

C++ class: QQmlScriptString.

C++ documentation:

QQmlScriptString is used to create QObject properties that accept a script "assignment" from QML.

Normally, the following QML would result in a binding being established for the script property; i.e. script would be assigned the value obtained from running myObj.value = Math.max(myValue, 100)

MyType {
      script: myObj.value = Math.max(myValue, 100)
}

If instead the property had a type of QQmlScriptString, the script itself -- myObj.value = Math.max(myValue, 100) -- would be passed to the script property and the class could choose how to handle it. Typically, the class will evaluate the script at some later time using a QQmlExpression.

QQmlExpression expr(scriptString);
expr.evaluate();

Methods

impl QQmlScriptString

pub unsafe fn boolean_literal(&self, ok: *mut bool) -> bool

If the content of the QQmlScriptString is a boolean literal, returns the boolean value and sets ok to true. Otherwise returns false and sets ok to false.

Calls C++ function: bool QQmlScriptString::booleanLiteral(bool* ok) const.

C++ documentation:

If the content of the QQmlScriptString is a boolean literal, returns the boolean value and sets ok to true. Otherwise returns false and sets ok to false.

pub unsafe fn copy_from(
    &self,
    arg1: impl CastInto<Ref<QQmlScriptString>>
) -> Ref<QQmlScriptString>

Assigns other to this.

Calls C++ function: QQmlScriptString& QQmlScriptString::operator=(const QQmlScriptString& arg1).

C++ documentation:

Assigns other to this.

pub unsafe fn is_empty(&self) -> bool

Returns whether the QQmlScriptString is empty.

Calls C++ function: bool QQmlScriptString::isEmpty() const.

C++ documentation:

Returns whether the QQmlScriptString is empty.

pub unsafe fn is_null_literal(&self) -> bool

Returns whether the content of the QQmlScriptString is the null literal.

Calls C++ function: bool QQmlScriptString::isNullLiteral() const.

C++ documentation:

Returns whether the content of the QQmlScriptString is the null literal.

pub unsafe fn is_undefined_literal(&self) -> bool

Returns whether the content of the QQmlScriptString is the undefined literal.

Calls C++ function: bool QQmlScriptString::isUndefinedLiteral() const.

C++ documentation:

Returns whether the content of the QQmlScriptString is the undefined literal.

pub unsafe fn new() -> CppBox<QQmlScriptString>

Constructs an empty instance.

Calls C++ function: [constructor] void QQmlScriptString::QQmlScriptString().

C++ documentation:

Constructs an empty instance.

pub unsafe fn new_copy(
    arg1: impl CastInto<Ref<QQmlScriptString>>
) -> CppBox<QQmlScriptString>

Copies other.

Calls C++ function: [constructor] void QQmlScriptString::QQmlScriptString(const QQmlScriptString& arg1).

C++ documentation:

Copies other.

pub unsafe fn number_literal(&self, ok: *mut bool) -> c_double

If the content of the QQmlScriptString is a number literal, returns that number and sets ok to true. Otherwise returns 0.0 and sets ok to false.

Calls C++ function: double QQmlScriptString::numberLiteral(bool* ok) const.

C++ documentation:

If the content of the QQmlScriptString is a number literal, returns that number and sets ok to true. Otherwise returns 0.0 and sets ok to false.

pub unsafe fn string_literal(&self) -> CppBox<QString>

If the content of the QQmlScriptString is a string literal, returns that string. Otherwise returns a null QString.

Calls C++ function: QString QQmlScriptString::stringLiteral() const.

C++ documentation:

If the content of the QQmlScriptString is a string literal, returns that string. Otherwise returns a null QString.

Trait Implementations

impl CppDeletable for QQmlScriptString

unsafe fn delete(&self)

Calls C++ function: [destructor] void QQmlScriptString::~QQmlScriptString().

impl PartialEq<Ref<QQmlScriptString>> for QQmlScriptString

fn eq(&self, arg1: &Ref<QQmlScriptString>) -> bool

Returns true if this and the other QQmlScriptString objects are equal.

Calls C++ function: bool QQmlScriptString::operator==(const QQmlScriptString& arg1) const.

C++ documentation:

Returns true if this and the other QQmlScriptString objects are equal.

See also operator!=().

#[must_use]fn ne(&self, other: &Rhs) -> bool

This method tests for !=.