Sets the receiver's text, which is the string that the
window manager will typically display as the receiver's
<em>title</em>, to the argument, which must not be null.
@param string the new text
@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>
Sets the receiver's text, which is the string that the window manager will typically display as the receiver's <em>title</em>, to the argument, which must not be null.
@param string the new text
@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>