Sets the offset of the composition from the start of the document.
This is the start offset of the composition within the document and
in not changed by the input method editor itself during the in-line edit
session but may need to be changed by clients of the IME. For example,
if during an in-line edit operation, a text editor inserts characters
above the IME, then the IME must be informed that the composition
offset has changed.
@return the offset of the composition
@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 offset of the composition from the start of the document. This is the start offset of the composition within the document and in not changed by the input method editor itself during the in-line edit session but may need to be changed by clients of the IME. For example, if during an in-line edit operation, a text editor inserts characters above the IME, then the IME must be informed that the composition offset has changed.
@return the offset of the composition
@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>