On Fri, 10 Oct 2014, Adriaan van Os wrote:
Section 7.1 Definition in Chapter 7 Interfaces of the FreePascal Language
Reference says
"Instances of interfaces cannot be created directly: instead, an
instance of a class implementing the interface must be created."
However, I assume that FreePascal classes (inheriting from interfaces) are
(unlike C++ classes) not binary compatible (on Win32) with interfaces ? In
other words, when I need to pass an instance of an interface to Win32 COM, I
have to call CoCreateInstance ?
No, you can pass the interface pointer directly:
MyIntf : IMyInterface;
begin
MyIntf := MyClassInstance as IMyInterface;
end;
Then pass on MyIntf.
Michael.
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