* Init the widget of \a pos and \a size on the drawing \a context.
*/
void widget_init(DWidget *w, dpos_t pos, dpos_t size, dcontext_t *context)
* Init the widget of \a pos and \a size on the drawing \a context.
*/
void widget_init(DWidget *w, dpos_t pos, dpos_t size, dcontext_t *context)