Binary compatibility vb6
Visual Basic Classic Visual Basic Classic 3. Dhaest Dhaest earned total points. Compatibility In Visual Basic When an ActiveX component is compiled, there are three possible project compatibility settings: This will cause any compiled client components to fail with error !
Use this setting to compile the initial release of a component to other developers. This will still cause any compiled client components to fail with error ! Recompilation of client components will restore them to working order again. Use this setting during the initial development and testing of a component within the IDE and before the component is released to other developers.
Binary Compatibility VB makes it possible to extend an existing class or interface by adding new methods and properties etc. It can do this, because it silently creates a new interface ID for the extended interface and adds registration code to register the original interface ID but with a new Forward key containing the value of this new interface ID. COM will then substitute calls having the old ID with the new ID and hence applications built against the old interface will continue to work assuming the inner workings of the component remain backward compatible!
Use this setting following the release of a component to other developers. Breaking Compatibility When the need to break compatibility arises, be sure to tackle it head on and make a clean break.
To do so, create a new version of the project with compatibility set to 'No Compatibility'. Next, change the project 'Name' attribute and compile to a different component name. Taking this approach ensures that existing applications can continue to work with the old component while new versions can use the new component. So when my application and ActiveX component is under development Question has a verified solution.
Sign up with Google. Sign up with LinkedIn. Sign up with Facebook. I would like to receive news, updates and offers from Experts Exchange. When trying to find the cause of a problem in VBA or VB6 it's often valuable to know what procedures were executed prior to the error. NET Framework message board but there was no response. Thank you for this perfect holiday site. Es lohnt sich bestimmt.
Holt Euch die Tipps! Computer sind sehr wichtige Instrumente in der modernen Zeit. Sie muessen erhalten und verbessert werden. I developed a VB. NET component that does some background processen. So far all is well in interopland. Now this is the problem: This is a bit bizar knowing that only the exe calls the VB. NET library and the exe itself was never changed and knowing that the changed vb6 dll can still be called from the exe! The curious thing is that if i redeploy the same components using the installer, all is well again in interop land.
Sex Girl BBS http: Here's how it works: CLSIDs and GUIDs on stucts are generated based on a hash of the fully-qualified class name plus the name, version, and public key of the assembly containing the class. IIDs are generated based on a hash of the fully-qualified interface name plus the signatures of all the interface s members that are exposed through Interop.
LIBIDs are generated based on a hash of the name, version, and public key of the assembly. The default GUID-generation behavior is not very helpful. Your types get brand new GUIDs each time you recompile. NET to create an Interop assembly. Recompile the COM component. Re-running t he managed consumer is now broken. NewGuid from managed code, etc. For example, with the GUID 55fe1ebd9a-9eced, I'd take the first digit in the third cluster 2 and multiply it by its position 12 to get the number October 20, at 6: October 20, at 3: December 19, at 8: March 21, at Musicians Friend Coupons says: April 12, at 6: May 4, at 5: June 4, at 6: June 4, at June 9, at June 15, at 8: June 15, at June 16, at 7: June 16, at June 18, at