Edit Anything

Professional text and hex editing
with Binary Templates technology.

SweetScape Knowledgebase
KB1019: Can I modify a variable using a template?

When working with Templates there are two types of variables and it is important to understand the difference between the two. Firstly there are Template variables which are defined in a template using the regular C syntax, for example:

     int a;

However, these variables do not behave exactly like C variables. Templates variables are mapped to bytes in a binary file so that reading the value of 'a' reads data from a file and assigning to 'a' writes data to a file. Since Templates are meant to be read-only for a file these type of variables cannot be assigned in the Template but they can be assigned in a script. For example, in a script you can execute:

     a = 5;

and this will modify bytes in your binary file. (Note that there is nothing special you need to include in your script to access the variables defined in a Template, as long as you run your Script after the Template you should be able to access all the Template variables).

The second type of variables in a Template are local variables. These variables behave just like regular C variables and can be assigned like normal. Local variables are defined using the 'local' keyword:

     local int i; 
     for( i = 0; i < 4; i++ )

If you are trying to assign to a variable in a Template, make sure the variable is declared with the 'local' keyword.

Back to knowledgebase index
Back to main support page

Our Products

Latest News

- 010 Editor
is now available.

Download it now!
What's New in 8.0?

Join our newsletter to receive tips and tricks on hex editing, special offers, and news from SweetScape Software Inc.

Sign-up Now...