Struct qt_widgets::q_size_policy::Policy

#[repr(transparent)]pub struct Policy(_);

This enum describes the various per-dimension sizing types used when constructing a QSizePolicy.

C++ enum: QSizePolicy::Policy.

C++ documentation:

This enum describes the various per-dimension sizing types used when constructing a QSizePolicy.

See also PolicyFlag, setHorizontalPolicy(), and setVerticalPolicy().

Methods

impl Policy

pub fn to_int(&self) -> c_int

impl Policy

pub const Fixed: Policy

The QWidget::sizeHint() is the only acceptable alternative, so the widget can never grow or shrink (e.g. the vertical direction of a push button). (C++ enum variant: Fixed = 0)

pub const Minimum: Policy

The sizeHint() is minimal, and sufficient. The widget can be expanded, but there is no advantage to it being larger (e.g. the horizontal direction of a push button). It cannot be smaller than the size provided by sizeHint(). (C++ enum variant: Minimum = 1)

pub const Maximum: Policy

The sizeHint() is a maximum. The widget can be shrunk any amount without detriment if other widgets need the space (e.g. a separator line). It cannot be larger than the size provided by sizeHint(). (C++ enum variant: Maximum = 4)

pub const Preferred: Policy

The sizeHint() is best, but the widget can be shrunk and still be useful. The widget can be expanded, but there is no advantage to it being larger than sizeHint() (the default QWidget policy). (C++ enum variant: Preferred = 5)

pub const MinimumExpanding: Policy

The sizeHint() is minimal, and sufficient. The widget can make use of extra space, so it should get as much space as possible (e.g. the horizontal direction of a horizontal slider). (C++ enum variant: MinimumExpanding = 3)

pub const Expanding: Policy

The sizeHint() is a sensible size, but the widget can be shrunk and still be useful. The widget can make use of extra space, so it should get as much space as possible (e.g. the horizontal direction of a horizontal slider). (C++ enum variant: Expanding = 7)

pub const Ignored: Policy

The sizeHint() is ignored. The widget will get as much space as possible. (C++ enum variant: Ignored = 13)

Trait Implementations

impl Clone for Policy

fn clone(&self) -> Policy

Returns a copy of the value.

fn clone_from(&mut self, source: &Self)

Performs copy-assignment from source.

impl Copy for Policy

impl Debug for Policy

fn fmt(&self, f: &mut Formatter) -> Result

Formats the value using the given formatter.

impl Eq for Policy

impl From<Policy> for c_int

fn from(value: Policy) -> Self

Performs the conversion.

impl From<i32> for Policy

fn from(value: c_int) -> Self

Performs the conversion.

impl PartialEq<Policy> for Policy

fn eq(&self, other: &Policy) -> bool

This method tests for self and other values to be equal, and is used by ==.

fn ne(&self, other: &Policy) -> bool

This method tests for !=.

impl StructuralEq for Policy

impl StructuralPartialEq for Policy