MWAPI - PARENT

Draft MDC Standard

PARENT identifies the window that is this window’s parent. If a window has a parent window, it (a) becomes invisible when its parent becomes invisible or is iconified; (b) if its VISIBLE attribute is TRUE, becomes visible when its parent becomes visible and is not iconified; and (c) is destroyed if its parent is destroyed.

If a window’s parent is a display, the PARENT wattribute is not defined.

If, for a window A, an application attempts to assign a value to PARENT which identifies a window B, and the DISPLAY wattribute values for windows A and B are not equal, an error condition occurs with an ecode = "M47" and $EREF containing a value that indicates the ssvn reference for which the error occurred.

The effect of assigning a value for the PARENT wattribute which causes a single window to be both an ancestor and a descendant of another window is not specified.