WORD
do_dialog( OBJECT *tree, WORD first_edit )
{
	GRECT g;
	WORD ret;

	/* Reserve screen/mouse button */
	wind_update( BEG_UPDATE );
	wind_update( BEG_MCTRL );

	/* Center dialog on screen and put clipping rectangle in g */
	form_center( tree, &g.g_x, &g.g_y, &g.g_w, &g.g_h );

	/* Reserve screen space and draw growing box */
	form_dial( FMD_START, 0, 0, 0, 0, g.g_x, g.g_y, g.g_w, g.g_h );
	form_dial( FMD_GROW, g.g_x + g.g_w/2, g.g_y + g.g_h/2, 0, 0, g.g_x, g.g_y, 	
		g.g_w, g.g_h );

	/* Draw the dialog box */
	objc_draw( tree, ROOT, MAX_DEPTH, g.g_x, g.g_y, g.g_w, g.g_h );

	/* Handle dialog */
	ret = form_do( tree, first_edit );	

	/* Deselect EXIT button */
	tree[ret].ob_state &= ~SELECTED;	

	/* Draw shrinking box and release screen area */
	form_dial( FMD_SHRINK, g.g_x + g.g_w/2, g.g_y + g.g_h/2, 0, 0, g.g_x, g.g_y, 
			g.g_w, g.g_h );
	form_dial( FMD_FINISH, 0, 0, 0, 0, g.g_x, g.g_y, g.g_w, g.g_h );

	/* Release screen/mouse control. */
	wind_update( END_MCTRL );
	wind_update( END_UPDATE );

	/* Return the object selected */
	return ret;
}