How to Edit an OCX File

OCX files are developer files that are mainly associated with ActiveX Controls, which are "small programs sometimes also called 'add-ons,' that are used on the Internet," according to Microsoft Online Safety. Moreover, OCX files contain control behaviors that are activated by program events or users.

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You can create, open and edit OCX files with development software such as Microsoft Visual Studio 2010 and Microsoft Visual Basic.

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Right click on the OCX file.

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Click on "Open With."

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Select the "Choose Default Program" option.

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Select the development software that you wish to use. (Microsoft Visual Studio 2010 or Microsoft Visual Basic.)

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Click on "Browse" only if Windows does not display the software. Search for it and then click on "Open."

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Click on "OK." Your OCX file will open.