Sets the receiver's background color to the color specified
by the argument, or to the default system color for the control
if the argument is null.
<p>
Note: This operation is a hint and may be overridden by the platform.
For example, on Windows the background of a Button cannot be changed.
</p>
@param color the new color (or null)
@exception IllegalArgumentException <ul>
<li>ERROR_INVALID_ARGUMENT - if the argument has been disposed</li>
</ul>
@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 background color to the color specified by the argument, or to the default system color for the control if the argument is null. <p> Note: This operation is a hint and may be overridden by the platform. For example, on Windows the background of a Button cannot be changed. </p> @param color the new color (or null)
@exception IllegalArgumentException <ul> <li>ERROR_INVALID_ARGUMENT - if the argument has been disposed</li> </ul> @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>