Returns the width, in points, of the screen in which the window of the current file is open.
Get(ScreenWidth)None
number
FileMaker Pro 6.0 or earlier
When the window spans more than one screen, this function uses the screen that contains the largest percentage of the window. If there are multiple windows open in the current database file, each window can have its own screen width value, but results are returned for only the foreground window.
Returns 640 when the screen resolution is set to 640 x 480.