Enum gtk::PolicyType[][src]

#[non_exhaustive]
pub enum PolicyType {
    Always,
    Automatic,
    Never,
    External,
    // some variants omitted
}
Expand description

Determines how the size should be computed to achieve the one of the visibility mode for the scrollbars.

Variants (Non-exhaustive)

This enum is marked as non-exhaustive
Non-exhaustive enums could have additional variants added in future. Therefore, when matching against variants of non-exhaustive enums, an extra wildcard arm must be added to account for any future variants.
Always

The scrollbar is always visible. The view size is independent of the content.

Automatic

The scrollbar will appear and disappear as necessary. For example, when all of a TreeView can not be seen.

Never

The scrollbar should never appear. In this mode the content determines the size.

External

Don’t show a scrollbar, but don’t force the size to follow the content. This can be used e.g. to make multiple scrolled windows share a scrollbar. Since: 3.16

Trait Implementations

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This method tests for !=.

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This method tests less than or equal to (for self and other) and is used by the <= operator. Read more

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This method tests greater than or equal to (for self and other) and is used by the >= operator. Read more

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Auto Trait Implementations

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🔬 This is a nightly-only experimental API. (toowned_clone_into)

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Performs the conversion.