Linking PB with Vb5

[Tyrone W. Lee]

I have been having trouble linking PowerBasic DLL's with VB5. Could someone give me the brief version of creating 32bit DLL's and linking them.

Also, is it possible to link a 16bit DLL in Vb5?

T

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Explorations v3.0 RPG Development System
http://www.explore-rpg.com

[Knuth Konrad]

Tyrone,

suppose this is your PB function which should be exported:

Function pbParseCount Alias "pbParseCount" (sMain As STRING, ByVal iAny As INTEGER, _
   sPattern As STRING) Export As LONG

If IsFalse(iAny) Then
   pbParseCount = ParseCount(sMain, sPattern)
Else
   pbParseCount = ParseCount(sMain, Any sPattern)
End If

End Function

Then your Declare in VB should look like

Declare Function pbParseCount Lib "SNSFUN32.DLL" (sMain As STRING, ByVal iAny As INTEGER, sPattern As STRING) As LONG

Be warned though that if you run your App from within the VB-IDE VB sometimes doesn't find your DLL. Copy the compiled either to a directory in the PATH, or change the VB Declare to include the full pathname to the DLL, i.e.

Declare Function pbParseCount Lib "C:\PBDLL60\SNSFUN32.DLL" (sMain As STRING, ByVal iAny As INTEGER, sPattern As STRING) As LONG

Someone else might be able to answer your 16bit DLL question.

Knuth

[Lance Edmonds]

DIRECT32.DLL is included with PB/DLL for this type of purpose. It allows a 32-bit app to call a 16-bit DLL by providing the thunking mechanism. It does not work under Windows NT, and some (recent) versions of VB (ie: VB6) may cause problems with it in some circumstances.

Check out the PBDLL\SAMPLES directory for DIRECT32.DLL and some example files.


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Lance
PowerBASIC Support
mailto:[email protected][email protected]</A>

[Tyrone W. Lee]

Man you guys are good.. I need to hang around here more often.

T

-------------
Explorations v3.0 RPG Development System
http://www.explore-rpg.com

[Jason Watson]

I found that including a Type Library into the DLL as a resource really helps the whole linking issue with VB.

The number of complaints(and GPFs) I've gotten from my VB users has dropped
to almost 0.

Jason

[Dave Navarro]

Jason,

Do you have an example of a Type Library resource?

--Dave


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PowerBASIC Support
mailto:[email protected][email protected]</A>

[Jason Watson]

I do .. but, there is a link that may be helpful for examples of how
to write type libraries and links to MSDN documentation:
http://www.vbaccelerator.com/typelib.htm

I'll wrap up a more complete example for anyone who wants to be mailed
a copy.