Re: [udk-dev] COM bridge from ooBasic to C++ dll with typelibrary

[Joachim Lingner]

[EMAIL PROTECTED] schrieb:
Thank you for your help.
Is it possible to port the example using the OLE/COM Uno bridge and still 
having the call in ooBasic of the function unchanged like 

Outval = fplus( inval) 

This would at least limit the changes to do the vba code during the port 
to OpenOffice.

Is there another way than using the VBA statement Declare Function Lib to 
declare C++ functions in ooBasic. I will have to port over 200.

I have no idea what the limits are regarding calling functions directly 
from OOo Basic.  However, this would probably only work with argument 
types which are similar to UNO types. In other words, if a function 
takes VARIANTs then this will not work. There is the possibility of 
calling automation objects from OOo Basic. That is, you could put all 
your functions in one IDispatch object and use it then from Basic.

I think there was still a problem with multidimensional arrays. Apart 
from that this could work.

Joachim





Regards

Jürgen

Joachim Lingner <[EMAIL PROTECTED]> wrote on 10/15/2007 04:49:53 PM:

Importing a type library is not supported.

Joachim

[EMAIL PROTECTED] wrote:
Hello,

I am porting a C++ COM application that is called from Excel via VBA 
to 
application that is called from Calc via ooBasic.

I am new to the OpenOffice environment and have some basic questions 
to 
learn the way ooBasic uses the OLE/COM Uno bridge.

Here is my C++ example:

MYSHAREDLIB_API double __stdcall fplus (double invalue)
{
        return invalue + 1.0;
}

And here the type library file .odl:

import "oaidl.idl";
import "ocidl.idl";
      [
         uuid(7D4B1C8E-69AF-4082-90CF-E07FD904A4DA),
         helpstring("MySharedLib"),
         lcid(0x0409),
         version(1.5)
      ]
      library MySharedLib
      {
      [
         helpstring("Functions exported by MySharedLib.dll"),
         version(1.5),
         dllname("MySharedLib.dll")
      ]
      module MSL
              {
                 [      helpstring("fplus"),    entry("fplus") ] 
double 
fplus(  [in]  double invalue  );
}
}

I can call this .dll in Calc using the VBA equivalent of  Declare 
Function
Declare Function fplus Lib ?MySharedLib.dll? (ByVal  invalue as 
Double) as 
Double

With a call example like this in the ooBasic code 

Outval = fplus( inval)

How can I import the information about fplus using the type library 
.tlb ? 
In Excel I can use the Tools -> References? Menu to add the 
typelibrary 
information to my Excel vba code as a reference.




Regards 

JJ
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