DLLs with COM interface
Henrik
zodiachus at gmail.com
Wed Dec 5 03:15:10 PST 2007
Hello!
I was reading up on http://www.digitalmars.com/d/dll.html#com regarding
how to call DLLs with a COM interface, since this is exactly what I am
struggling with.
I'm trying to interface with proprietary DLLs that I know expose COM
interfaces. Fortunately, I have the documentation for them so I know
exactly what methods they expose.
There is, for example trtCom.dll, which exposes a trtComMgr class, which
has a method AboutBox(). I thought I'd start with calling that, since
it takes no arguments and returns nothing.
Now, it said in the article mentioned above that COM objects and D
interfaces are virtually the same thing, so I tried this:
extern(Windows)
{
interface MbtComMgr
{
void AboutBox();
}
}
But that wasn't very popular with the D compiler. It simply said:
Error: need 'this' to access member AboutBox
What would be the proper way of accessing a COM DLL?
The article said that "The sample code includes an example COM client
program and server DLL." What sample code is it talking about exactly? I
looked under C:\dmd\samples\d\mydll but found nothing that looks like an
example on this.
Cheers!
Henrik
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