How can I access the raw stack data? MS callback proc prototype changes when asm starts popping the stack

[anon23294430]

I’ve replied here but Address(Procedure Overloading) - Address Parameter ambiguous - How can I specify which procedure? - #6 by anon23294430

but I’ll post here.

@anon23294430

what you have to do is create a reference to the class in the class method which is the callback and then refer to it by its new name, and not self.method or self.property.

Note I’ve changed lpParam from a long to the ClassName in the prototype to give me access to everything in the class.

ClassName.EnumResTypeCallBack Procedure(long lp01, long lp02, long lp03, ClassName lpParam, long pType, long phModule)
MyCallbackClassName  &ClassName
code
MyCallbackClassName &= lpParam
MyCallbackClassName.Property
MyCallbackClassName.Method

I had even tried using Bind in the hope it would work like the C++ Bind function, but the Clarion Bind doesnt handle classes., so for now I’m exploiting the compiler.

@jslarve

If you want your (NON-CLASS-RELATED) callback procedure to “know” which instance of your class it’s dealing with, you might need to maintain a module level queue of instances or handles (or whatever you use) that it can look up and respond to. But whatever you do with that procedure, it can’t be a class method.

Thats not necessary as the above explains.

I have to admit, I’m quite pleased I’ve cracked this problem!

There are no examples in any of the class source code files I’ve seen, partly because of the problem with the prototyping of some callbacks in the first place.

Edit. I havent tested Queues referenced in the class yet, but everything else works just fine and I can see all the data in the class and change it just fine from the callback method. No need for any special messaging handling or any other communication methods, like synching classes. It just works.