Using MSComm in Microsoft Access 2003

Posted on 2006-12-01
Last Modified: 2008-01-09
I have developed a POS sytem using Microsoft Access.  I am using MSComm to transmit information to a pole display, which works fine.  I have different forms that  needs to send information to the Pole Display.  I would like to work with only one form that has MSComm controls.  So,  I created a form and called it CommForm, and I called the MSComm control commpd. I created another form with a command button and I paste the attached code to it.  When I click on the command button, I get the following message: Run-time error '91' Object variable or with block variable not set.  I don't know what commands I am missing.  Can someone please help.

Private Sub Command0_Click()

If CommForm.commpd.PortOpen = False Then
    CommForm.commpd.PortOpen = True
End If

Dim s As String
s = "testing"
CommForm.commpd.Output = s

End Sub
Question by:rowenab

Expert Comment

ID: 18073797
are you sure that the form with the control is already open when the code executes?

it seems that you're triyng to use a control that doesn't exist at runtime yet...

Author Comment

ID: 18079049
yes, the form with the controls are open

Author Comment

ID: 18090394
I figured out the problem.  My form works fine using global variables.  This question can now be closed.

Expert Comment

ID: 18091467
You have to load form CommForm first, then fire it from the other form wwhich has command1 button.
MScomm control have no property nor method nor constant named "commpd".

Accepted Solution

Computer101 earned 0 total points
ID: 18231888
PAQed with points refunded (500)

EE Admin

Featured Post

Are your AD admin tools letting you down?

Managing Active Directory can get complicated.  Often, the native tools for managing AD are just not up to the task.  The largest Active Directory installations in the world have relied on one tool to manage their day-to-day administration tasks: Hyena. Start your trial today.

Question has a verified solution.

If you are experiencing a similar issue, please ask a related question

Suggested Solutions

Title # Comments Views Activity
fizzArray3  challenge 1 88
ShiftLeft challenge 21 80
data scientists and AI 17 108
what is the main difference between git clone and fetch ann pull and push commands 2 89
Windows Script Host (WSH) has been part of Windows since Windows NT4. Windows Script Host provides architecture for building dynamic scripts that consist of a core object model, scripting hosts, and scripting engines. The key components of Window…
How to remove superseded packages in windows w60 or w61 installation media (.wim) or online system to prevent unnecessary space. w60 means Windows Vista or Windows Server 2008. w61 means Windows 7 or Windows Server 2008 R2. There are various …
The goal of the video will be to teach the user the difference and consequence of passing data by value vs passing data by reference in C++. An example of passing data by value as well as an example of passing data by reference will be be given. Bot…
The viewer will learn additional member functions of the vector class. Specifically, the capacity and swap member functions will be introduced.

770 members asked questions and received personalized solutions in the past 7 days.

Join the community of 500,000 technology professionals and ask your questions.

Join & Ask a Question