Returns the number of tabs.
<p>
Tab stop spacing is specified in terms of the
space (' ') character. The width of a single
tab stop is the pixel width of the spaces.
</p>
@return the number of tab characters
@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 number of tabs. <p> Tab stop spacing is specified in terms of the space (' ') character. The width of a single tab stop is the pixel width of the spaces. </p>
@return the number of tab characters
@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>