U_CHNINF
Return information about a channel
WTSupported in traditional Synergy on Windows
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WNSupported in Synergy .NET on Windows
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USupported on UNIX
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VSupported on OpenVMS
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xcall U_CHNINF(channel, [filename], [mode][, class])
Arguments
channel
The channel about which to obtain information. (n)
filename
(optional) Returned with the name of the file open on the channel. (a)
mode
(optional) Returned with the I/O mode in which the file is open. (a)
class
(optional) Returned with the environment level that owns the channel if the channel is local or one of the following class values: (n)
0 = Channel is not in use (according to Toolkit).
–1 = Channel is global.
–2 = Channel is a Toolkit system channel.
Discussion
U_CHNINF returns information about a channel. If channel is not in use, filename and mode will be returned blank.
Examples
In the following, U_CHNINF returns the name of the file open on the channel stored in chnl, the I/O mode for which the file is open, and the class of the channel (local, global, and so forth).
xcall u_chninf(chnl, filnam, iomode, class)
This example closes all global channels.
for chnl from 1 thru 32 begin xcall u_chninf(chnl,,,class) if (class.eq.-1) xcall u_close(chnl) end