Actually the error does NOT occur on the FOR statement like previously mentioned. It appears after that when I try to do a

If (Something[I].Line >= TopLine) and (Something[I].Line < TopLine+LinesInWindow) then ..
.
Sorry for the missinformation in my previous email.

Shane

>> "Samuel Liddicott" 08/16 8:42 AM >>>

in Delphi 1 this only works for message handler procedures. I think in Delphi 4 it will call any inherited procedure with the same arguments.

Sam

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Can you send the correct code ? The above makes no sense with neither TList nor TStringlist; and since I use a lot of loops on Tlists and TStringlists I know that these work; so I'd like to see the correct code.

Michael.

Michael ,

can we just call external to reference a C++ lib such as in QT. I just assumed we could not because of the name mangling that occurs in compiled C++ libs.

It makes little difference, I am not doing that right now. I am just looking at my available options.

Cliff

Well I am not using any c interface at the moment to talk to qt at all and no extern calls either. The whole thing I am messing with at the moment is using unix sockets to work with the qt engine...

In this fashion I have total control over the way in which I implement the qt side without affecting the lcl in any way.

IOW I am just going to provide messaging thru a sockets implementation. This may be a very cool way to implement because it would open some big web type capabilities as well.

Cliff

You can do that, no problem. If you solve the name mangling by yourself, I see no problem in it.

The MAIN reason we don't support C++ is not the name mangling; the main reason is the multiple inheritance.

We are planning to do something like
TQTClass = cppclass (some,parent,classes)
Method1
Method

    end;

But for this the compiler needs to have a notion of multiple inheritance and the way the VMT's are constructed in C++ This will take some time before it will be implemented...

It makes little difference, I am not doing that right now. I am just looking at my available options.

I see no problem in what you are doing; in fact the C interface to the QT C++ libs does exactly that: it provides C calls that map to C++ mangled names methods; So in FPC it should work just as well...

Michael.

Soo.... in Lazarus where would I look to find out about setting Z order?

Can Z order and size and pos and enabled be set in one go, like SetWindowPos?

Is this GUI dependant?

Sam

There is name mangling, but all you do is put a cdecl at the end of it (like the gtk headers) and it'll work (should work).

Shane

>> "Baeseman, Cliff" 08/16 10:01 AM >>>

Michael ,

can we just call external to reference a C++ lib such as in QT. I just assumed we could not because of the name mangling that occurs in compiled C++ libs.

It makes little difference, I am not doing that right now. I am just looking at my available options.

Cliff