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Project Compatibility and Binary Compatibility
What is Compatibility? When do you use which compatibility? What are the primary differences between project compatibility and binary compatibility?


  
Total Answers and Comments: 2 Last Update: June 14, 2009     Asked by: sathish.piskala 
  
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November 18, 2008 13:13:16   #1  
Parmanand Singh Member Since: November 2008   Contribution: 3    

RE: Project Compatibility and Binary Compatibility
Used for COM component. there are 3 type of comatibility - No Compatibility Project Compatibility Binary Compatibilty. we have to set Compatibility for COM Component.

No Compatibility means when you compile your component each time near GUIDs CLASS IDs will be created.

project Compatibility means Component is class ID will not change only new Interface id will be generated.

Binary Compatibility - VB will not change any of the existing class interface or type library ID s.

we should always set Binary compatibility for Live projects.

Pls have look on below URL for Better understanding -

visibleprogress . com/vb_binary_compatibility . htm

 
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June 13, 2009 21:06:17   #2  
Paul_G Member Since: March 2009   Contribution: 1    

RE: Project Compatibility and Binary Compatibility
Its also important to realise that if you set your project to binary comaptability and ADD additionally to the interface this will not break the interface. You will break the interface if you alter the signature in any way.
 
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 Related Questions


Latest Answer : No Compatibility - New GUID created, references from other components will not work. Project Compatibility - Default for a new component Binary Compatibility - GUID does not change, references from other components will work ...

Instr – integer (Numeric position)Strcmp - integer ( if both the string are equal they result = 0) Strcmp (Str1, Str2, Comparetype) Comparing mode = 0 – Binary Comparing 1 – Textual Comparing 

Std Global with in the project. Cls Global through out the all project only thing is we want to set the type lib. Class Modules can be Instantiated.  

LOB (Large Object Data type). CLOB (Stores Character Objects). BLOB ( Store Binary Objects such as Graphic, Video Chips and Sound files). BFILE(Store file pointers to LOB It may Contain  filename 
Latest Answer : In Visual Basic 6 there are 11 different data types. These are Boolean, Byte, Currency, Date, Double, Integer, Long, Object, Single, String, and Variant. ...

This cannot have user interface. This can be used for the COM creation.  

RdOpenFowardOnly 0 (Default used only for the read only purpose) RdOpenStatic 1 RdOpenDynamic 2 RdOpenKeySet 3 (Normally used for the live project)  

Latest Answer : Hi Prasanna                Go to the project menu and fin the components menu item browse the ocx control. ...
Read Answers (1) | Asked by : pghare

Latest Answer : go to components and add a new ocx file ...
Read Answers (1) | Asked by : pghare

Latest Answer : General Definition : Different systems (e.g., {programs}, {file formats}, {protocols}, even {programming languages}) that can work together or exchange data are said to be compatible. o Visual Basic’s Version Compatibility feature is a way of enhancing ...
Read Answers (2) | Asked by : pghare


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