Get(WindowWidth)
Purpose 
Returns the width, in points, of the window on which the script is acting (not necessarily the foreground window).
Format 
Get(WindowWidth)
Parameters 
None
Data type returned 
number
Originated in 
FileMaker Pro 7.0
Description 
The width of the window is calculated from the left-most to right-most outer edge of the window. This position doesn’t include shadows or other effects applied to windows.
Note  For information on how functions evaluate differently on the host versus the client, search the FileMaker Knowledge Base available at //help.filemaker.com.
Examples 
Returns 300 when the current window is 300 points wide.
Related topics 
Functions reference (category list)
Functions reference (alphabetical list)
About formulas
About functions
Defining calculation fields
Using operators in formulas