Helper to check if a file exists

Get the pixel size in bytes. @return pixel size, or 0 if the format is unknown, or pixels are not aligned to bytes. */

Helper to get current path of this plugin

Get a value normalized to 0.0<->1.0, fixed within range. */

Get a fixed value within range. */

Get height of this window. Only relevant to hosts when the UI is embedded. */

Get the "native" window handle that this window should embed itself into. Returned value type depends on the platform: - HaikuOS: This is

Get the title of the window previously set with setTitle(). This is typically displayed in the title bar or in window switchers. */

Get the transient window that we should attach ourselves to. TODO what id? also NSView* on macOS, or NSWindow? */

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Get width of this window. Only relevant to hosts when the UI is embedded. */