How can I check the open-mode of an opened file from the file refNum?

How can I check the open-mode of an opened file from the file refNum?
Especially whether a file is opened as read-only or write-only? I haven't found any VI in the panel with file VIs.
Thanks for any hints!

Check this post. Probably you can use a kernel.dll call.
http://forums.ni.com/t5/LabVIEW/file-date-created/m-p/109836

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while (res.next()) {
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Thanks!
Oops I forogt I could use the .contains, i also tried that but still no luck.
There is no compiler error but here is an example of the output:
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MAGNAME: Merlin
NAME: Brandon
MAGNAME: Gondorf
NAME: Chris
MAGNAME: Houdini
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Brandon Gondorf
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MAGNAME: Merlin
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Certified Professional Instructor
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"... after all, He's not a tame lion..."
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Hello all.
There are somthing wrong with voice gateway in our gateway.
One of the E1 channel can't make a call from local pod to remote pod.
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ISDN Se1/0/0:15, Channel [1-31]
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ISDN Se1/0/1:15, Channel [1-31]
Configured Isdn Interface (dsl) 1
Channel State (0=Idle 1=Proposed 2=Busy 3=Reserved 4=Restart 5=Maint_Pend)
Channel : 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1
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Service State (0=Inservice 1=Maint 2=Outofservice 8=MaintPend 9=OOSPend)
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I can't understand the cause code...and status
*Oct 18 18:40:59.815 KST: ISDN Se1/0/0:15 Q931: RX <- SETUP pd = 8 callref = 0x3202
Bearer Capability i = 0x8090A3
Standard = CCITT
Transfer Capability = Speech
Transfer Mode = Circuit
Transfer Rate = 64 kbit/s
Channel ID i = 0xA9839C
Exclusive, Channel 28
Progress Ind i = 0x8183 - Origination address is non-ISDN
Calling Party Number i = 0x2180, '615861200'
Plan:ISDN, Type:National
Called Party Number i = 0x81, '9680100'
Plan:ISDN, Type:Unknown
Sending Complete
*Oct 18 18:40:59.823 KST: ISDN Se1/0/0:15 Q931: TX -> CALL_PROC pd = 8 callref = 0xB202
Channel ID i = 0xA9839C
Exclusive, Channel 28
*Oct 18 18:41:00.167 KST: ISDN Se1/0/0:15 Q931: TX -> ALERTING pd = 8 callref = 0xB202
*Oct 18 18:41:02.955 KST: ISDN Se1/0/0:15 Q931: TX -> CONNECT pd = 8 callref = 0xB202
*Oct 18 18:41:02.959 KST: ISDN Se1/0/0:15 Q931: TX -> DISCONNECT pd = 8 callref = 0xB202
Cause i = 0x80AC - Requested circuit/channel not available
*Oct 18 18:41:02.979 KST: ISDN Se1/0/0:15 Q931: RX <- CONNECT_ACK pd = 8 callref = 0x3202
*Oct 18 18:41:02.979 KST: ISDN Se1/0/0:15
**ERROR**: Ux_BadMsg: Invalid Message for call state 11, call id 0xD, call ref 0xB202, event 0xF
*Oct 18 18:41:02.979 KST: ISDN Se1/0/0:15 Q931: TX -> STATUS pd = 8 callref = 0xB202
Cause i = 0x80E20F - Message not compatible with call state or not implemented
Call State i = 0x0B
*Oct 18 18:41:03.039 KST: ISDN Se1/0/0:15 Q931: RX <- RELEASE pd = 8 callref = 0x3202
*Oct 18 18:41:03.039 KST: ISDN Se1/0/0:15 Q931: TX -> RELEASE_COMP pd = 8 callref = 0xB202
Voice gateway are connected NEC PBX and Nortel Meridian.
Problems occured both PBX systems.
I'm not sure the problem caused by PABX or Gateway.
How can i check it?
Regard,
john.

Hello.
Here is the partial configuration on gateway.
controller E1 1/0/0
framing NO-CRC4
pri-group timeslots 1-31
description << NEC NEAX-1 >>
controller E1 1/0/1
framing NO-CRC4
pri-group timeslots 1-31
description << NEC NEAX-2 >>
interface Serial1/0/0:15
no ip address
isdn switch-type primary-ntt
isdn protocol-emulate network
isdn incoming-voice voice
no cdp enable
interface Serial1/0/1:15
no ip address
isdn switch-type primary-ntt
isdn protocol-emulate network
isdn incoming-voice voice
no cdp enable
voice-port 1/0/0:15
no comfort-noise
busyout action shutdown
busyout monitor GigabitEthernet0/0
voice-port 1/0/1:15
no comfort-noise
busyout action shutdown
busyout monitor GigabitEthernet0/0
dial-peer voice 1 pots
description << A -> B >>
destination-pattern .T
no digit-strip
direct-inward-dial
port 1/0/0:15
dial-peer voice 2 pots
description << C -> B >>
destination-pattern .T
no digit-strip
direct-inward-dial
port 1/0/1:15
dial-peer voice 500 voip
description << 1586 >>
destination-pattern 1586....
session target ipv4:192.168.254.2
codec g711ulaw
no vad
dial-peer voice 501 voip
description << 1586 >>
preference 10
destination-pattern 1586....
session target ipv4:192.168.254.34
codec g711ulaw
no vad
Other dial-peers are omitted
dial-peer voice 7777 voip
description << Dummy Dial-peer for Codec Negotiation >>
incoming called-number .T
codec g711ulaw
no vad
Additionally, the NEC PBX was configuted it's isdn switch type ETSI.
But our gateway's isdn switch type is primary-ntt.
Regard,
john.

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