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Hello Antonio

I have a cash register with Windows CE.NET 4.20
The program works very well.

Now I have to link with a DLL , I need only 3 functions
1) DLL FUNCTION RCHOpen() AS LONG PASCAL FROM "RCHOpen" LIB "RCHGlobe.dll"
2) DLL FUNCTION RCHClose() AS LONG PASCAL FROM "RCHClose" LIB "RCHGlobe.dll"

This 2 functions works and return correctly 0

3) DLL FUNCTION RCHSendData(sIn AS STRING ,sOut AS STRING) AS LONG PASCAL FROM "RCHSendData" LIB "RCHGlobe.dll"

VB.NET Code is = Public Shared Function RCHSendData(ByVal a As String, ByVal b As String) As Int32 )

I call the function

sIn := AnsiToWide("=K")
sOut := AnsiToWide(space(40))
nRet := RchSendData(sIn,sOut)


But return always an error
(I try without AnsiToWide)


Antonio , are you able to give me some clue as to solve this problem ?

Regards MAurizio





















I know that this problem could be due to the cash.
Antonio , are you able to give me some clue as to solve this problem ?

Maurizio wrote:3) DLL FUNCTION RCHSendData(sIn AS STRING ,sOut AS STRING) AS LONG PASCAL FROM "RCHSendData" LIB "RCHGlobe.dll"

Try AS LPSTR instead of the two AS STRING.

EMG

Ciao Enrico

unfortunately I have already tryed .

Thank Maurizio

It may be that the DLL command is not fully implemented in FWPPC yet.

Antonio?

EMG

Enrico,

The DLL command is fully working.

Maurizio, what error code do you get ?

The Function RCHSendData return -104 , parameters non correctly.

Maurizio

Maurizio,

Have you tried to supply the parameters without calling AnsiToWide() ?

Please use LPSTR as Enrico has pointed,

Yes I tryed without AnsiToWide() and with LPSTR
but without success

Maurizio

Maurizio,

I suggest you that you try a C wrapper, without using DLL FUNCTION to see if that makes a difference.

Code: Select all  Expand view

#pragma BEGINDUMP

#include <hbapi.h>

HB_FUNC( RCHSENDDATA )
{
   hb_retnl( RCHSendData( hb_parc( 1 ), hb_parc( 2 ) ) );
}

#pragma ENDDUMP


You need to link RCHGlobe.lib.

Antonio

I Try

implib.exe RCHGlobe.lib RCHGlobe.DLL
and I have the LIB

but when I link RCHGlobe.lib i had
c:\harbour_ce\lib\RCHglobe.lib : fatal error LNK1136: invalid or corrupt file

Maurizio

Did you use MSVCE implib?

EMG

Enrico

nella cartella VCE non trovo implib.exe
ho usato quella di Borland
dove posso trovarla quella per MSVCE ?
MAurizio

Usa LINK.EXE con lo switch /IMPLIB (link /? per le varie opzioni).

EMG

Antonio
cann you help me with a problem . I am not able to transform the DLL in the LIB .
Thank to Enrico's help I use this command , but it dosnt work.

c:\vce\bin\link corelibc.lib /LIBPATH:c:\vce\lib\arm /NOLOGO /SUBSYSTEM:WINDOWSCE,4.20 /MACHINE:ARM /DLL /IMPLIB:rchglobe.dll /OUT:rchglobe.lib

Regards MAurizio