F

finalize

To clean up after a data structure; usually, this process involves calling a finalizer.

finalizer

A function that runs when cleaning up after a data structure. GType has a base finalizer that reclaims the class memory allocated by the base initializer, as well as class finalizers (which normally are not necessary). The finalizer runs when the last reference to an object disappears.

floating reference

A reference that does not (yet) have an owner pointer. A newly created widget in GTK+ has a floating reference; when packed into a container, the container takes control of the reference.

focus

(input) The target of input events. The focus decision usually happens on two levels. First, the window manager manipulates the focus on a per-window basis; in certain cases, it can automatically change the focus from one window to another. Then the application window must determine which of its widgets receives the focus. GTK+ marks the focus target with a dotted line around widgets or with an active cursor inside entry boxes and text widgets.

font description

The Pango format for describing a font; it starts with the font name , followed optionally by slant, variant, weight, width, and point size . Examples are Times Normal 36 and Charter Bold Italic Condensed 10.

framebuffer

1. A region of memory containing arrayed pixel values, where each value corresponds to a pixel on a display; in computer graphics, the frame-buffer is the last stop on the way to the monitor. 2. In a narrower sense, especially pertaining to the Linux kernel, framebuffer graphics refers to certain graphics that are rendered directly, without going through layers such as the X Window System. As of version 2.0, GTK+ can write directly to the framebuffer.