9.4 DUIM-Frames Module
frame-state
Generic function
Summary
Returns the visible state of the specified frame.
Signature
frame-state frame => state
Arguments
- frame
- An instance of type
<frame>.
Values
- state
- An instance of type
one-of(#"detached", #"unmapped", #"mapped", #"iconified", #"destroyed").
Library
duim-frames
Module
duim-frames
Description
Returns the visible state of the specified frame. The return value from this function indicates whether frame is currently iconified, whether it is mapped or unmapped, whether it has been destroyed, or whether it has become detached from the thread of which it was a part.
Example
The following example creates a simple frame, then displays it and tests its position. You should run this code in the interactor, pressing the RETURN key at the points indicated.
define variable *frame* = make(<simple-frame>, title: "A frame", layout: make(<button>));RETURN
start-frame(*frame*);RETURN
frame-state(*frame*);RETURN => #"mapped"