<doc>
  <legacy_id>1260</legacy_id>
  <name>mouseDownInBackdrop</name>
  <type>message</type>
  <syntax>
    <example>mouseDownInBackdrop <i>mouseButtonNumber</i></example>
  </syntax>
  <library></library>
  <objects>
    <card/>
  </objects>
  <synonyms>
  </synonyms>
  <classification>
    <category>User Interaction</category>
  </classification>
  <references>
    <message tag="mouseUpInBackdrop">mouseUpInBackdrop Message</message>
  </references>
  <history>
    <introduced version="1.1">Added.</introduced>
  </history>
  <platforms>
    <mac/>
    <windows/>
    <linux/>
  </platforms>
  <classes>
    <desktop/>
    <server/>
  </classes>
  <security>
  </security>
  <summary>Sent when the user presses the <glossary tag="mouse button">mouse button</glossary> while the <glossary tag="mouse pointer">mouse pointer</glossary> is in the backdrop..</summary>
  <examples>
    <example>on mouseDownInBackdrop <code><i>-- show a popup menu with a list of windows</i></code></p><p>  popup button "Windows"</p><p>end mouseDownInBackdrop</example>
  </examples>
  <description>
    <p>Handle the <b>mouseDownInBackdrop</b> <keyword tag="message box">message</keyword> to perform an action when the user presses the <glossary tag="mouse button">mouse button</glossary> while the <glossary tag="mouse pointer">mouse pointer</glossary> is outside any window.</p><p/><p><b>Parameters:</b></p><p>The <i>mouseButtonNumber</i> specifies which <glossary tag="mouse button">mouse button</glossary> was pressed:</p><p>        * 1 is the mouse button on Mac OS systems and the left button on Windows and Unix systems.</p><p>        * 2 is the middle button on Unix systems.</p><p>        * 3 is the right button on Windows and Unix systems and Control-click on Mac OS systems.</p><p/><p><b>Comments:</b></p><p>The <b>mouseDownInBackdrop</b> <keyword tag="message box">message</keyword> is sent to the <glossary tag="current card">current card</glossary>.</p><p/><p>If the <b>backdrop</b> <glossary tag="property">property</glossary> is set to "none", the <b>mouseDownInBackdrop</b> <keyword tag="message box">message</keyword> is not sent.</p>
  </description>
</doc>