Install the Visual Basic 6.0 SP6 run-time files. If you're on a Win7 64-bit PC then copy the DLLs, OCXs etc. To%windir% SysWoW64 and not%windir% System32 (see here for an explanation). Open an elevated/admin command prompt (search for cmd in the Start Menu search box, right-click, Run as administrator) and try to register the OCX using regsvr32. How to fix the Visual Basic 6 OCX issues MS08-070: Vulnerabilities in Visual Basic 6.0 Runtime Extended Files (ActiveX Controls) could allow remote code execution. .OCA files serve as a cache of the extended type library information for its corresponding.OCX file. If you delete an.OCA file for a control VB recognizes and uses, VB will recreate the.OCA file when you load a project requiring the control. The recreation process takes a little time but comes with no penalty otherwise. Last reviewed: April 4, 1996 Article ID: Q149429 SUMMARY For every custom control file (.OCX) that Visual Basic uses, there is an accompanying.OCA file of the same file name. For example, GRAPH16. Driver on daily basis in gurgaon sd. OCX has an accompanying.OCA file called GRAPH16.OCA. An.OCA file is a binary file that functions as both an extended type library file and a cache for the custom control file. MORE INFORMATION A type library is a file or component within another file that contains OLE Automation standard descriptions of exposed objects, properties, and methods. Visual Basic Programming For BeginnersThe actual working type library for a custom control used in Visual Basic is a combination of the type library of the control itself and the additional properties provided by the framework that wrap the control. Some of the properties of the control are provided by the framework and some by the control itself. Programmatically, the properties from the framework and the control all appear as properties of the control.
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