forked from livecode/livecode
-
Notifications
You must be signed in to change notification settings - Fork 0
Expand file tree
/
Copy pathdeleteBackground.lcdoc
More file actions
47 lines (31 loc) · 1.17 KB
/
deleteBackground.lcdoc
File metadata and controls
47 lines (31 loc) · 1.17 KB
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
Name: deleteBackground
Type: message
Syntax: deleteBackground
Summary:
Sent to a <group> just before it is removed from the <stack>.
Associations: group
Introduced: 1.0
OS: mac, windows, linux, ios, android
Platforms: desktop, server, mobile
Example:
on deleteBackground
beep 2 -- warn user
pass deleteBackground
end deleteBackground
Description:
Handle the <deleteBackground> <message> if you want to perform cleanup
before a <group> is removed from the <stack>.
The actual deletion is not triggered by the <deleteBackground>
<message>, so <trap|trapping> the <message> and not allowing it to
<pass> does not prevent the <group> from being removed.
Deleting the last card on which a group appears does not remove the
group from the stack, so it does not cause a <deleteBackground>
<message> to be sent.
Ungrouping a group does not cause a <deleteBackground> <message> to be
sent.
A deleteGroup <message> is sent before the <deleteBackground> <message>.
(The <deleteBackground> <message> is included for compatibility with
HyperCard.)
References: delete (command), group (command), pass (control structure),
message (glossary), trap (glossary), stack (object)
Tags: objects