Get the Windows handle of a window or of the R process.
A string (see below), or the number of a graphics device window
getWindowsHandle gets the Windows handle.
Possible choices for
||The console window handle.|
||The MDI frame window handle.|
||The process pseudo-handle.|
|A device number||The window handle of a graphics device|
These values are not normally useful to users, but may be used by developers making add-ons to R.
NULL is returned for the Frame handle if not running in MDI mode,
for the Console handle when running Rterm, for any unrecognized
which, or for a graphics device with no
Other windows (help browsers, etc.) are not accessible through this function.
An external pointer holding the Windows handle, or
This is only available on Windows.