-
- window1 The top pane.
- window2 The bottom pane.
- sashPosition The initial position of the sash. If this
- value is positive, it specifies the size
- of the upper pane. If it is negative, it
- is absolute value gives the size of the
- lower pane. Finally, specify 0 (default)
- to choose the default position (half of
- the total window height).
-
- Returns True if successful, False otherwise (the window was
- already split).
-
- SplitHorizontally should be called if you wish to initially
- view two panes. It can also be called at any subsequent
- time, but the application should check that the window is
- not currently split using IsSplit.