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https://forum.hyperion-entertainment.com/viewtopic.php?f=27&t=135
If it was my personal choice I would abolish those macros entirely. I know some think it makes their code more readable or whatever but I found in practice it just hides nasty bugs especially in any sizable project. The names are far too generic and easily clash. We inherited the code so I suppose we are stuck with it now but I would love to just deprecate the entire macro mess.trixie wrote:Although the Autodocs specifically mention that functions like CHECKBOX_GetClass() or GETFILE_GetClass() are deprecated as of V52, the reaction_macros.h include file still contains many object macro definitions using these obsolete functions instead of the public class ID.
The autodoc for OpenClass() says: "Use of this function can eliminate the need for getting the class interface ..." I'm slightly puzzled by this "CAN eliminate". So DOES it eliminate GetInterface() or not?ssolie wrote:I would also like to point out that you should be using IIntuition->OpenClass() and IIntuition->CloseClass() exclusively when loading/unloading BOOPSI classes.
If all you need from the interface is the #?_GetClass() function then yes it eleiminates the need for that.The autodoc for OpenClass() says: "Use of this function can eliminate the need for getting the class interface ..." I'm slightly puzzled by this "CAN eliminate". So DOES it eliminate GetInterface() or not?
I see, so whenever I want to call IListBrowser->AllocListBrowserNode() or similar functions, I do need to GetInterface() first. OK, that makes good sense.broadblues wrote:Some gadget inetrfaces have more functions than that tough, so in those cases you might need to get the inetface as well.
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struct ClassLibrary *MyClassBase; /* the class library base pointer */
struct MyClassIFace *IMyClass; /* the class interface pointer */
Class *MyClass; /* the class pointer */
Object *MyObject; /* the object pointer */
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MyClassBase = IExec->OpenClass("classname", version, &MyClass);
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IMyClass = IExec->GetInterface( (struct Library *) MyClassBase, "main", 1L, NULL);Code: Select all
MyObject = IIntuition->NewObject(MyClass, NULL, tags ...);