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Lexikos
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PostPosted: May 10th, 2009, 5:28 am 
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Location: Australia
Mustang wrote:
What would you suggest for communication between an AHK script and a virtual com port then?

Serial ( COM ) Port Console Script


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Mustang
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PostPosted: May 10th, 2009, 5:50 am 
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I'm not sure if it's due to being a virtual port rather than physical
But running this script gives an error:
Serial ( COM ) Port Console Script wrote:
There is a problem with Serial Port communication.
Failed Dll BuildCommDCB, BCD_Result=0
The Script Will Now Exit.


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Sean
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PostPosted: May 10th, 2009, 6:12 am 
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Mustang wrote:
What would you suggest for communication between an AHK script and a virtual com port then?
I meant that no need to update it, just call them with COM_Invoke().
Code:
COM_Init()
pcomm := COM_CreateObject("MSCommLib.MSComm")

MsgBox, % nCommID := COM_Invoke(pcomm, "CommID")
; COM_Invoke(pcomm, "CommID", nCommID)
MsgBox, % nCommPort := COM_Invoke(pcomm, "CommPort")
; COM_Invoke(pcomm, "CommPort", nCommPort)

COM_Release(pcomm)
COM_Term()


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Mustang
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PostPosted: May 10th, 2009, 8:30 am 
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I was originally struggling to find a copy of CoHelper with the DispParams function

But trying out the code posted above hits me with this:
COM Error Notification wrote:
Function Name: "CommID"
ERROR: The COM Object may not be a valid Dispatch Object!
First ensure that COM Library has been initialized through COM_Init()
()

And the same message for CommPort

Infact COM_CreateObject returns a value of 0


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Joy2DWorld
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PostPosted: May 10th, 2009, 11:15 am 
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Joined: December 4th, 2006, 10:35 am
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Location: Galil, Israel
Mustang wrote:

Infact COM_CreateObject returns a value of 0



then you've not created an object so nothing for invoke to call...


likely need proper/better ID for the com object you want to use.

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Mustang
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PostPosted: May 10th, 2009, 3:37 pm 
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Location: England
Yes it would seem to be the case
As I say, I'm trying to get Sean's example to run


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Joy2DWorld
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PostPosted: May 10th, 2009, 8:55 pm 
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Location: Galil, Israel
have you researched the object or the subject generally ?

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Sean
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PostPosted: May 11th, 2009, 1:50 am 
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You don't have mscomm32.ocx, do you?


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Mustang
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PostPosted: May 11th, 2009, 6:11 am 
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I did have it, but it wasn't registered
Now it is and now COM_CreateObject returns a pointer value
:D

However
nCommID returns -1
and
nCommPort returns 1

Trying to pass nCommPort, or a manually assigned value into the final invoke returns a blank msgbox


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Sean
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PostPosted: May 11th, 2009, 11:03 am 
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Mustang wrote:
Trying to pass nCommPort, or a manually assigned value into the final invoke returns a blank msgbox
PropertyPut has no return value. Try instead:
Code:
COM_Invoke(pcomm, "CommPort", nCommPort)
MsgBox, % COM_Invoke(pcomm, "CommPort")


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Sean
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PostPosted: May 27th, 2009, 2:54 am 
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The role of "-0" is changed from Null to the strict Missing parameter. Details in the top post.


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garkin
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PostPosted: May 31st, 2009, 1:47 pm 
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Joined: May 27th, 2009, 10:44 pm
Posts: 17
A little error:
Code:
 COM_Unicode4Ansi(ByRef wString, sString, nSize = "")
    {
        If (nSize = "")
            nSize:=DllCall("kernel32\MultiByteToWideChar", "Uint", 0, "Uint", 0, "Uint", &sString, "int", -1, "Uint", 0, "int", 0)
       ; VarSetCapacity(wString, nSize * 2 + 1)    ;Wrong
        VarSetCapacity(wString, (nSize+1) * 2)     ;Right, i think
        DllCall("kernel32\MultiByteToWideChar", "Uint", 0, "Uint", 0, "Uint", &sString, "int", -1, "Uint", &wString, "int", nSize + 1)
        Return    &wString
    }

By YMP, script-coding.info.


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Lexikos
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PostPosted: May 31st, 2009, 1:57 pm 
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VarSetCapacity ensures the variable can hold at least RequestedCapacity bytes, "in addition to its internal terminator". Since the internal terminator is one byte, Sean's code is correct.


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garkin
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PostPosted: May 31st, 2009, 7:24 pm 
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Joined: May 27th, 2009, 10:44 pm
Posts: 17
Sorry :oops:


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Sean
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PostPosted: June 1st, 2009, 1:03 am 
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garkin wrote:
Sorry :oops:
Doubt about yourself first, especially when you're a newbie.


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