Overview of the DEC Text Processing Utility

1.2 Description of DECwindows DECTPU

The DECwindows version of DECTPU does not provide access to all of the features of DECwindows. For example, there are no DECTPU built-in procedures to handle floating-point numbers or to manipulate entities such as lines, curves, and fonts.

With DECwindows DECTPU, you can create a wide variety of widgets, designate callback routines for those widgets, fetch and set geometry and text-related resources of the widgets, and perform other functions related to creating a DECwindows application. For example, the DECwindows EVE editor is a text processing interface created with DECwindows DECTPU.

1.2.2 DECwindows DECTPU and the DECwindows User Interface Language

You can use DECTPU programs with DECwindows User Interface Language (UIL) files just as you would use programs in any other language with UIL files. For an example of a DECTPU program and a UIL file designed to work together, see the description of the CREATE_WIDGET built-in in the DEC Text Processing Utility Reference Manual. For more information about using UIL files in conjunction with programs written in other languages, see the VMS DECwindows Guide to Application Programming.

1.3 Description of EVE

The Extensible Versatile Editor (EVE) is the editor provided with DECTPU. EVE is easy to learn and to use. You can access many of EVE’s editing functions by pressing a single key on the keypad. EVE is also a powerful and efficient editor, which makes it attractive to experienced users of text editors. You can access more advanced editing functions by entering commands on the EVE command line. Many of the special features of DECTPU (such as multiple windows) are available with EVE commands. You can access other DECTPU features by entering DECTPU statements from within EVE.

EVE has both a character-cell and a DECwindows interface. To use EVE’s DECwindows interface, you must be using a bit-mapped terminal or workstation.

Although EVE is a fully functional editor, it is designed to make customization easy. You can use either DECTPU statements or EVE commands to tailor EVE to your editing style.

You can write extensions for EVE or you can write a completely separate interface for DECTPU. Figure 1–2 shows the interface choices for DECTPU.

1–4Overview of the DEC Text Processing Utility

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Compaq AA-PWCBD-TE manual Description of EVE, DECwindows Dectpu and the DECwindows User Interface Language
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