Applies to
Format
*width*x*height*
Read-only.
If the control is a window, this refers to its current interior size: i.e., not counting titlebar, statusbar, borders, etc. If it’s maximized, this will be the true size of the window interior, as opposed to size which is the interior size once this window is no longer maximized.
If this control is a pane and can-scroll is true, this is the size of the display area not including the scrollbars.