<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.0 Transitional//EN">
<html xmlns="http://www.w3.org/1999/xhtml" xml:lang="en" lang="en" dir="ltr">
<head>
<meta http-equiv="Content-Type" content="text/html; charset=UTF-8">
<link rel="stylesheet" href="../../style.css">
<title>
Gambas Documentation - invalid
</title>
</head>
<table class="none" width="100%" cellpadding="0" cellspacing="0" border="0">
<tr><td align="left">
<font size="-1">
<a href="../../help+en"><img class="flag" alt="Home" border="0" src="../../img/lang/en.png" align="center"></a>&nbsp;
<a href="../def+en">Up</a>&nbsp;
<a href="identifier+en">Previous</a>&nbsp;
<a href="iso8859+en">Next</a>&nbsp;
</td></tr></table>
<div class="notab">
<h1>
invalid
</h1>
<a href="gambas+en">Gambas</a> objects can become invalid: they are not destroyed, but you cannot use them anymore.
<p>
Usually, an object becomes invalid because its operation depends on another <a href="gambas+en">Gambas</a> object,
or on another non-Gambas internal element, that was destroyed.
<p>
For example, if the user destroys a window by closing it, the corresponding <a href="../comp/gb.qt/form+en">Form</a> or <a href="../comp/gb.qt/window+en">Window</a> <a href="gambas+en">Gambas</a> object
is not destroyed, but becomes invalid.
<p>
<hr><b>See also</b><br>
Object.<a href="../comp/gb/object/isvalid+en">IsValid</a>&nbsp;

</div>
</body>
</html>

