Printing every other listbox item as transparent grey

General
1

This is on my mac version… I want to print the contents of the list box with every other line having a slight grey box.

[code]  if greybox=true then
    page.ForeColor= &cC3C1C1
    page.PenHeight=0
    page.Transparency=0.80
    page.FillRect(0,(gap1*20)+65,800,(gap*20)+20)
    greybox=false
  else
    greybox=true
  end if[/code]

it’s not really working that well - instead of printing a slightly transparent grey background I get a solid grey box - any ideas?

2

Maybe transparency is not supported for printing?

3

That’s an unusual way to alternate lines. Do you not have some sort of line number at this place in code? Then it’s just

if lineNumber Mod 2 = 1 then //fill line background end

As to the actual problem, what are gap1 and gap? It’s possible these are filling more than you think, particularly if ‘gap’ is increasing. With a lineNumber variable (starting at 0) it’d look like this, basically that last height parameter is constant.

g.FillRect(0, lineNumber*rowHeight+topOffset, width, rowHeight)
4

This could be shortened to:

If greybox Then page.ForeColor = &cC3C1C1 page.PenHeight = 0 page.Transparency = 0.8 page.FillRect(0, (gap1 * 20) + 65, 800, (gap * 20) + 20) End greybox = Not greybox
But personally I also use the Modulo approach Will has posted.

5

It works well enough - it’s the transparency with printing that’s the problem.
Gap is simply the amount of line spaces dependant on how many lines are in the the list item.
Grey box is a boolean which alternates.

6

Sean:

I have two very stupid questions: why using transparency ?

And… where do you print the text ?

In a project, I print a light grey background rect (one line with, one line without) and in an alternate print, I print the ListBox color background (more complex: four possible background colors).

The first problem was resolved by printing the text SECOND, while the second problem was an error of mine: for some stupid reason, I enlarged the height value used to print the color background line…

But I do not think at transparency (in printing).

7

Oh I misunderstood. I thought the alternating boxes were filling the page but I see the issue is just opaqueness. [quote]page.Transparency=0.80[/quote]
It’s not [0->1] transparent->opaque, it’s [0->100] opaque->transparent.

8

I don’t know if this applies here, but I had noticed in the past that printers sometimes need blocks of color or pictures to be sent to the printer BEFORE Text, otherwise text does not show.