I will create a small example and post when done - Thanks
Sergei Gorelkin wrote:
SteveG wrote:
error occurs with fpc 2.2.1, works ok with 2.0.4
I was thinking possible threading in relation to LCL access?
I have since found that the same code in the dll works ok if I call it
from a syncronised function in the main app.
Your code example is thread-safe by itself if it is contained within a
single function. This is because variables are located on the stack and
no global data is accessed (except the memory manager). Maybe you have
to tell the memory manager of DLL that your application is multithreaded
(by setting IsMultiThreaded := True during DLL initialization).
If your application contains threading and LCL access, please try to
provide a more complete example. Otherwise it is hard to guess what is
going wrong.
Sergei
Sergei Gorelkin wrote:
SteveG wrote:
Could anyone tell me why the following code fails within a dll?
Worked ok with Laz 9.14, but no longer with Laz 9.23 (WindowsXP)
The same code works fine out of the dll - seems to want to sync with
LCL thread I guess?
> Access Violation at the 'doc.Appendchild(N);' line
>
> var doc :TXMLDocument;
> N :TDOMNode;
>
> doc := TXMLDocument.create;
> N := TDOMNode.create(doc);
> N := doc.CreateElement('root');
> doc.Appendchild(N);
> writeXMLFile(doc, 'C:\Test.xml');
> FreeAndNil(doc);
>
It's hardly a threading issue, because XML package does not use
threading in any way.
What version of compiler do you use, 2.0.4 or 2.2.0?
Sergei
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