forked from livecode/livecode
-
Notifications
You must be signed in to change notification settings - Fork 0
Expand file tree
/
Copy pathdeleteImage.lcdoc
More file actions
37 lines (23 loc) · 1.14 KB
/
Copy pathdeleteImage.lcdoc
File metadata and controls
37 lines (23 loc) · 1.14 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
Name: deleteImage
Type: message
Syntax: deleteImage
Summary: Sent to an <image> just before it is removed from the <stack>.
Associations: image
Introduced: 1.0
OS: mac,windows,linux,ios,android
Platforms: desktop,server,web,mobile
Example:
on deleteImage
export the target to file "Saved"
pass deleteImage
end deleteImage
Description:
Handle the <deleteImage> message if you want to perform cleanup before an <image> is removed from the <stack>.
The actual deletion is not triggered by the <deleteImage> <message>, so <trap|trapping> the <message> and not allowing it to <pass> does not prevent the <image> from being removed.
However, the undo <command> will restore an <image> after it is deleted by the user. For example, the following <handler>, placed in a <card> or stack <script>, effectively prevents an <image> from being deleted by the user:
on deleteImage
beep
send "undo" to this card in 5 milliseconds
end deleteImage
References: card (keyword), image (keyword), script (property), delete (command), stack (object), handler (glossary), trap (glossary), message (glossary), command (glossary), pass (control_st)
Tags: objects