<doc>

<legacy_id>2465</legacy_id>

<name>deleteBackground</name>

<type>message</type>

<syntax>

<example>deleteBackground</example>

</syntax>

<library></library>

<objects>

<group/>

</objects>

<synonyms>

</synonyms>

<classification>

<category>Objects &amp; Messages</category>

</classification>

<references>

<command tag="delete">delete Command</command>

</references>

<history>

<introduced version="1.0">Added.</introduced>

</history>

<platforms>

<mac/>

<windows/>

<linux/>

<ios/>

<android/>

</platforms>

<classes>

<desktop/>

<server/>

<web/>

<mobile/>

</classes>

<security>

</security>

<summary>Sent to a <command tag="group">group</command> just before it is removed from the <object tag="stack">stack</object>.</summary>

<examples>

<example>on deleteBackground</p><p> beep 2 <code><i>-- warn user</i></code></p><p> pass deleteBackground</p><p>end deleteBackground</example>

</examples>

<description>

<p>Handle the <b>deleteBackground</b> <keyword tag="message box">message</keyword> if you want to perform cleanup before a <command tag="group">group</command> is removed from the <object tag="stack">stack</object>.</p><p/><p><b>Comments:</b></p><p>The actual deletion is not triggered by the <b>deleteBackground</b> <keyword tag="message box">message</keyword>, so <glossary tag="trap">trapping</glossary> the <keyword tag="message box">message</keyword> and not allowing it to <control_st tag="pass">pass</control_st> does not prevent the <command tag="group">group</command> from being removed.</p><p/><p>Deleting the last card on which a group appears does not remove the group from the stack, so it does not cause a <b>deleteBackground</b> <keyword tag="message box">message</keyword> to be sent.</p><p/><p>Ungrouping a group does not cause a <b>deleteBackground</b> <keyword tag="message box">message</keyword> to be sent.</p><p/><p>A <b>deleteGroup</b> <keyword tag="message box">message</keyword> is sent before the <b>deleteBackground</b> <keyword tag="message box">message</keyword>. (The <b>deleteBackground</b> <keyword tag="message box">message</keyword> is included for compatibility with HyperCard.)</p>

</description>

</doc>