In OS X, returns 400 in when the current window height is 437 and the status toolbar isn’t showing.
In OS X, the example below combines Get(WindowContentHeight) with
Get(WindowHeight) to determine the height of the title bar and horizontal scroll bar:
Get(WindowHeight) -
Get(WindowContentHeight) returns
37 when the window height is 437 and the status toolbar isn’t showing.
460 when toolbar, menu bar, and status bar are showing
548 when toolbar and menu bar are hidden but status bar is showing
252 when both toolbar and menu bar are showing
320 when both toolbar and menu bar are hidden