Difference between revisions of "MC-Basic:ISOPEN"
m (Text replace - "Read-Only" to "Read only") |
m (Text replace - "''<return value>''" to "<''return value''>") |
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| Line 15: | Line 15: | ||
|TYPE= | |TYPE= | ||
''<DeviceHandle>'': Long<br> | ''<DeviceHandle>'': Long<br> | ||
| − | '' | + | <''return value''>: Long |
|RANGE= | |RANGE= | ||
''<DeviceHandle>'': 1 to 255<br> | ''<DeviceHandle>'': 1 to 255<br> | ||
| − | '' | + | <''return value''>: 0 – closed |
1- open | 1- open | ||
Revision as of 09:36, 20 March 2014
Returns the status of port , defined by (<DeviceHandle>) .
<DeviceHandle>: A handle to a specified port.
Syntax
?ISOPEN(<DeviceHandle>)
Availability
from 0.4.0.22
Type
<DeviceHandle>: Long
<return value>: Long
Range
<DeviceHandle>: 1 to 255
<return value>: 0 – closed
1- open
Scope
Configuration, Task or Terminal
Limitations
Read only
Examples
-->Open COM2 BaudRate=9600 Parity=0 DataBits=8 StopBit=1 As #2
-->?isOpen(2)
1
-->close #2
-->?isOpen(2)
0
-->Open "File1.PRG" Mode="w" as #1
-->?isOpen(1)
1