Returns the maximum number of characters that the receiver's
text field is capable of holding. If this has not been changed
by <code>setTextLimit()</code>, it will be the constant
<code>Combo.LIMIT</code>.
@return the text limit
@exception SWTException <ul>
<li>ERROR_WIDGET_DISPOSED - if the receiver has been disposed</li>
<li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver</li>
</ul>
Returns the maximum number of characters that the receiver's text field is capable of holding. If this has not been changed by <code>setTextLimit()</code>, it will be the constant <code>Combo.LIMIT</code>.
@return the text limit
@exception SWTException <ul> <li>ERROR_WIDGET_DISPOSED - if the receiver has been disposed</li> <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver</li> </ul>