I am trying for the first time to call a dll from Basic+. When I try to use it in a Stored Procedure I get the following message "ENG0805: TEST_DLL, line 8. Function WNETGETCONNECTIONA does not exist in dynamic link library MPR.DLL." Obviously I'm trying to use the function WnetGetConnectionA that is located in the MPR.DLL. Are there additional steps that I need to take to get this to work?

Thanks for any suggestions,

Matt

The following is my sysprocs entry.

SYSPROCS*DLL_MPR

MPR

LONG PASCAL WNetGetConnectionA(SHORT,LONG,LONG)

I saved it and then ran RUN DECLARE_FCNS "DLL_MPR"

My stored procedure looks like this:

COMPILE SUBROUTINE TEST_DLL (VOID)

DECLARE FUNCTION WNetGetConnectionA

buf_size=255

cbRemoteName=255

lpszRemoteName=str(' ',buf_size)

ret=WNetGetConnectionA("F:",lpszRemoteName,cbRemoteName)

RETURN

Matt,

The "A" in WNetGetConnectionA makes me think this function is 32-bit. Is there a 16-bit WNetGetConnection you can use?

- Oystein -

Matt,

It appears that your're trying to call a 32-bit DLL function from OI16.

If you're using OI16 then you need to call the WNetGetConnection() function that is located in USER.EXE. You should prototype it like so in the DLL_USER record in the SYSPROCS table:

USHORT PASCAL WNetGetConnection( LPCHAR, LPCHAR, LPUSHORT )

You should then be able to call the function like so after you've run declare_fcns():

declare function WNetGetConnection

lpszLocalName=SomeLocalName' : \00\

lpszRemoteName=str( \00\, 2048 )

cbRemoteName=len( lpszRemoteName )

retVal=WNetGetConnection( lpszLocalName, lpszRemoteName, cbRemoteName )

and so on….

The WNetGetConnectionA function is a 32-bit equivalent that is exported from MRP.DLL but can only really be called from 32-bit apps, so forget this unless you're working with OI32

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Thanks for the instruction, worked perfectly.

Matt

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