Forms-Based Application Development Tools User Guide > Part 2: Vision > Modifying Vision Code > Summary of Methods to Modify Code
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Summary of Methods to Modify Code
The following table describes the methods to modify code:
Method
Marks Frame as "Custom"
Required Knowledge
Range
Advantages/
Disadvantages
Writing Escape Code
No
4GL
Affects individual frames
Easy and direct.
Modifying Template Files
No
4GL and template language
All frames that use that template file. Can be used to modify all frames of a particular type.
A good way of making global changes to an application. More difficult than writing escape code.
Including Source Code Processing Commands
No
Depends on how implemented. Often requires extensive knowledge of operating system or a 3GL
Individual or all frames
Can require considerably more work to implement than the other methods.
Edits your source code after it is generated by Vision but the result is not considered "Custom" code.
Can require alterations to work with subsequent Vision releases.
Editing Source Code
Yes
4GL
Individual frames
Very quick and easy.
Code is considered "customized" by Vision; any code changes must be reapplied.
Last modified date: 01/30/2023