Difference between revisions of "MC-Basic:ISOPEN"
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* [[MC-Basic:CLOSE|CLOSE]] | * [[MC-Basic:CLOSE|CLOSE]] | ||
* [[MC-Basic:INPUT$|INPUT$]] | * [[MC-Basic:INPUT$|INPUT$]] | ||
| − | * [[ | + | * [[MC-Basic:OPEN|OPEN]] |
| − | * [[ | + | * [[MC-Basic:PRINT HASH|PRINT HASH]] |
}} | }} | ||
Latest revision as of 08:39, 22 May 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