[REBOL] Re: [bug?] engage away action
From: moliad::aei::ca at: 26-Jul-2004 23:19
this is a bug.
it seems that the mouse press event and drag event do not share the same idea as
to what is the top-most face. down effectively sees the ui without red face,
while the drag mechanism memorises the top-most face with or without feel. but
because the event handler is set to none for the red face, the event is still
being sent to the gray box... but with an event generated from the red box's
The reason this is a bug, is that if you execute the following:
view layout [
b: box "Grey" 100x100 100.100.100 with [
feel: make face/feel [
engage: func [face action event][print "" probe action
probe face/text probe event/offset]
pane: make face [size: 50x50 color: 200.0.0 none text: "Red"
] edge [color: black size: 10x10
you will notice that by pressing in the region where there is a red box and
going beyond it to its left, the mouse position is negative, although the grey
box receiving the events, and the mouse is clearly over it!
moral of the story. Don't put face/feel to none ;-)