How do I omit certain table cols in print view?

Answer

You can do this with CSS and the TablePlugin.

%IF{ "$ cover='print'" then="<style type='text/css' media='all'> .foswikiTableCol1 { display:none; } </style>" }%

The IfStatement checks the url parameter cover. If it is set to print (this is how the print view works at least in PatternSkin), one line of css code is injected into the topic making that column disappear in the print view. Alter the number in foswikiTableCol1 to hide other columns (couter starts with 0).

This simple version applies to all tables on the topic. With some knowledge on CSS this can be easily restricted to single tables.

Example

%TABLE{id="Foo"}%
|*Head1*|*Screen-only*|*Head2*|*Head3*|
| 1 | 2 | 3 | 4 |
| 1 | 2 | 3 | 4 |
| 1 | 2 | 3 | 4 |
| 1 | 2 | 3 | 4 |

Head1	Screen-only	Head2	Head3
1	2	3	4
1	2	3	4
1	2	3	4
1	2	3	4