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Okay thanks.....I'll try it out. 
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You're welcome
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i am looking for source code to interface with hp impedance tester 4285A to perform the automated sorting system.
Can vb communicate with tester with only handler interface.(centronic connector)
can anyone help pls.
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You will not "find" source code - it is something that has to be written. If you are looking for somebody to do the work for you, this is the wrong place; here we answer questions on implementation-problems, compiler-errors and runtime-exceptions.
Bastard Programmer from Hell 
if you can't read my code, try converting it here[^]
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You're not likely to find ANY source code to do this. What you're asking is such a vertical question that you're probably only going to 5 people on this planet who have done anything close to what you're asking about.
Do yourself a favor. Your time would be better spent researching what it takes to interface with this thing and write the code yourself than it would be trying to find a ready-made solution or other people to write it for you.
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I have a PrintPreviewControl on a form that is opened modally (ShowDialog) from a Main form. (not MDI) The program seems to be trying to return back to the Main form prematurely and causing this error...
'The Undo operation encountered a context that is different from what was applied in the corresponding Set operation. The possible cause is that a context was Set on the thread and not reverted(undone).'
This only happens when I set the PrintPreviewControl.Document. This spawns the 'Generating Preview' window, then crashes the program in the Main form at the ShowDialog statement, which should be 'waiting' for the second form to close. Not sure if it matters, but this is on Win7.
*Update - After several hours of trying to debug this, I changed my default printer from a network printer to my PDF printer and the app works as expected. The network printer works flawlessly from all other programs, so why would I expect it to be the culprit?
"Go forth into the source" - Neal Morse
modified 16-Aug-12 10:37am.
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Is this realted to the default print dialog in any way?
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Hi,
I've a component which is com enabled.
It is working fine in vb6 for my machine and when i try to use the .tlb file on other machine its not able to give the output in vb6 application.
I've tried registering .tlb file using regtlibv12.exe, but couldn't find a way.
Please help me out.
Thanks,
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The .tlb file contains only the Type Library information, the actual code is contained in the .exe or .dll as the case may be. Did you include it in your app?
Karthik Reddy wrote: not able to give the output in vb6 application.
Care to explain?
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you mean to register along with .dll file ?
I tried generating a .tlb file using regasm but it also did not help.
FYI-- I'm unable to execute regsvr32.exe
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What are you trying to do ? Can you explain your problem in detail ?
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Actually I've created a component in .net.
I need to make use of it in vb6. So, for this i've made Com visible and register com interop to true in my component.
I've build my component which has generated a .dll and a .tlb file .
Now the .tlb file is visible in my machine and it works in my application fine and i could see the output of it in vb6.
But when i try to install the .tlb file on other machines, it is installing the tlb file.
But in vb6 application, I'm getting error saying "Automation Error The system cannot find the file specified
".
Its showing like this.
what might be wrong ? Its working fine on my machine but unable to get the output on other machines
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You use REGASM on the .DLL file to register it. You don't register the TLB.
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is it like Regasm myfile.dll /tlb:myfile.dll
or
regasm myfile.dll
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It's the first, but you're allowed to try both.
Bastard Programmer from Hell
if you can't read my code, try converting it here[^]
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Command is successful but still unable to get result. Giving error message as "Automation Error The system cannot find the file specified"
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Good huntin'
Bastard Programmer from Hell
if you can't read my code, try converting it here[^]
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Yes all classes have Guid's and also i've set ClassInterface(ClassInterfaceType.None).
yes, i'm on win 7 i've registered to admin account.
I've tried with /codebase option also but it didnot make any difference
I did not install the dependency dll's on admin account.
Do i need to register the .tlb files with regtlibv12.exe ?
I guess inorder to use /codebase option, my dll need to be strongly name, but my dll is not strongly name because my third party dll is not stronly named .
modified 17-Aug-12 2:11am.
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Karthik Reddy wrote: Do i need to register the .tlb files with regtlibv12.exe ?
No. AFAIK, regtlib12 isn't required.
Karthik Reddy wrote: I guess inorder to use /codebase option, my dll need to be strongly name, but my dll is not strongly name because my third party dll is not stronly named .
..there's the problem.
Bastard Programmer from Hell
if you can't read my code, try converting it here[^]
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i have the app i want users to set connection to the database at run time by supplying the data source name,user id and password of the database before the application set. This is what i have done but it seem not to get me the exit output i want.any help?
Public Sub savenewconnection(ByVal id As String, ByVal pass As String, ByVal source As String)
Try
Dim newdbcon As String
Dim oldconnection As ConnectionStringSettings = ConfigurationManager.ConnectionStrings("mydbcon")
Dim dbcon As String = oldconnection.ConnectionString
Dim builder As New OleDbConnectionStringBuilder(dbcon)
builder.Add("Data Source", source)
builder.Add("Password", pass)
builder.Add("User ID", id)
newdbcon = builder.ConnectionString
Dim config As System.Configuration.Configuration = ConfigurationManager.OpenExeConfiguration(ConfigurationUserLevel.None)
config.ConnectionStrings.ConnectionStrings("mydbcon").ConnectionString = newdbcon
config.Save(ConfigurationSaveMode.Modified)
ConfigurationManager.RefreshSection("ConnectionStrings")
Catch ex As Exception
MsgBox(ex.Message)
End Try
End Subry
End Sub
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Instead of creating a new post, edit your previous post and add your inputs there. Please delete this post.
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i have the app i want users to set connection to the database at run time by supplying the data source name,user id and password of the database before the application set. This is what i have done but it seem not to get me the exit output i want.any help?
Public Sub savenewconnection(ByVal id As String, ByVal pass As String, ByVal source As String)
Try
Dim newdbcon As String
Dim oldconnection As ConnectionStringSettings = ConfigurationManager.ConnectionStrings("mydbcon")
Dim dbcon As String = oldconnection.ConnectionString
Dim builder As New OleDbConnectionStringBuilder(dbcon)
builder.Add("Data Source", source)
builder.Add("Password", pass)
builder.Add("User ID", id)
newdbcon = builder.ConnectionString
Dim config As System.Configuration.Configuration = ConfigurationManager.OpenExeConfiguration(ConfigurationUserLevel.None)
config.ConnectionStrings.ConnectionStrings("mydbcon").ConnectionString = newdbcon
config.Save(ConfigurationSaveMode.Modified)
ConfigurationManager.RefreshSection("ConnectionStrings")
Catch ex As Exception
MsgBox(ex.Message)
End Try
End Sub
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Cross post
Why is common sense not common?
Never argue with an idiot. They will drag you down to their level where they are an expert.
Sometimes it takes a lot of work to be lazy
Please stand in front of my pistol, smile and wait for the flash - JSOP 2012
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Have a VB6 legacy program that has been running for years and never saw this before.
It opens a text file, reads the contents and closes the file, code is:
f1 = FreeFile
Open filename For Binary As #f1 'Open the file
RawData = Input$(fileLen(filename), #f1) 'read it
Close #f1 'Close it
When a user logs on with a non administrator account and tries to run this they get a "Path/File access error". If they log in using an administrator account it works fine.
Interestingly enough, it does appear to actually read the file, but the warning is bothersome (removing the warning is not an option)
I tried every combination of security on the the file permissions, enabling/disabling Modify, Read and Execute, Read, Write and so-on, the best I can do is generate a "file not found" error, not an access error.
Any ideas what else to look at?
Thanks in advance
no-e
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If the file is in a 'my documents' directory which is not the logged in user then you will get a permissions error. You could try moving the file to a directory outside of 'my documents'
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