How to use .DLL with VB???

[mikef]

I have a very simple DLL that contain 5 routines.

1) What do I have to do to make this DLL available to Visual Basic??

2) What do I need to do to register this DLL with Windows, or do I???

I tried a few things, but I keep getting an Error saying "FILE NOT FOUND" and it referes to the below line in my declarations:

Private Declare Sub trInfo Lib "trackw" (rev%)

I have also tried it this way:

Private Declare Sub trInfo Lib "c:\windows\trackw.dll" (rev%)

Is this case sensitive??? I am lost?!?!?!


thanks for the help.

[seoptimizer2001]

You have to register it first. The best place to put it is in the System32 folder. Anyways then open a command prompt and type 'regsvr32 nameoffile' if you put it in system32 folder or 'regsvr32 [pathtofile]' if not. This will allow you to reference it from references in VB.

[jim mcnamara]

You register COM servers, not regular dll's

If you wrote the dll in VB it is a COM object, so you have to register it. Otherwise, Put the file in c:\Windows\System directory

A regular dll callyou declare it like this

Declare Function PrinterProperties Lib "somthin" (ByVal hWnd As Long, ByVal hPrinter As Long) As Long


"somthin" points to \windows\system\somthin.dll

[mikef]

Thanks! I was pretty sure I had to register it or something.

I tried to use the service to register though, and I got this message:

LoadLibrary("trackw.dll") failed.
GetLastError returns 0x0000001f.

This DLL was written for Win 3.1... does that matter??? What would need to be changed??

I was hoping since it was so simple that no changes would be necessary, but it looks like they might be!


Thanks for your excellent help.

[mikef]

It all started as an ASM library add-in for Qbasic and PBasic... but then we made it into a DLL, but I don't know if the DLL is in ASM or C...

I am assuming I can use it, I just am not setting it up properly???

Thanks again... your answers have been more than helpful.

[mikef]

I keep getting the same error:

Runtime error: 48

File Not Found

This is how I have it declared and the file is in the C:\windows\system directory:

Private Declare Sub trInfo Lib "trackw" (rev As Integer)


Is this right??? What am I doing wrong???