Multiple text lines in listbox header

General
1

Is it possible to have more than 1 text line in a listbox header column ?

instaed of ‘Date Created’
I would like to have in 1 header column displayed

  1. line: ‘Date’
  2. line: ‘Created’

since we can change listbox header height, we should be able to display multiple lines in a listbox header column …

2

Yeah, you can do this with the HeaderContentPaint-Event. You have to split the lines by yourself.

3

thanks Martin, I’ll try it

4

If you’ve got Xojo 2020r1 or better, refer to this Xojo Blog article (" Customize Your ListBox Headers"). You can find it at https://blog.xojo.com/2020/09/08/customize-your-listbox-headers/. AFAIK, any version prior to 2020r1 doesn’t offer you any easy solutions for multi-line headers.

However, I would STRONGLY recommend that you look into investing in piDog Software’s DataView. It does bunches of things that the standard Xojo listbox doesn’t … including allowing the setting of Header Height. I find it infinitely easier to accomplish what I need using DataView (which is advertised as a “direct drop-in replacement” for the Xojo listbox … although I’ve found a few minor exceptions to that). And I think you’ll find DataView priced quite affordably. I’ve gotten to the point where I can’t do without it!

5

You can set the Header Height in Xojos Listbox using 2020+.

6

I have tried this in HeaderContentPaint

If column = 0 Then
g.DrawText ( “1.Line”, 0, 0 )
End If

Return True

but this displays nothing, header is empty

7

The location is wrong. You need to change the second 0 to the height of the font or more.

8

I know, Martin … that’s why I said “If you’ve got Xojo 2020r1 or better, refer to this Xojo Blog article” … but thanks anyways!

1 Like
9

That works, text displayed but is hard to read, almost the same colour as background

10

had to set the text colour

how can I center the text ?

11

Check out DrawingColor: https://documentation.xojo.com/api/graphics/graphics.html#graphics-drawingcolor.

For centering you need to know the StringWidth:

Private Function getStringWidth(theString as String) as Integer
  dim thePicture as new Picture(500, 100, 32)
  thePicture.Graphics.FontSize = NSFontMBS.SystemFontSize
  Return thePicture.Graphics.TextWidth(theString)
End Function

Then you can calculate where to draw the text.

Drawing multiline code centered is a bit more work.

12

thank’s Beatrix,

I though it should be easy, now it turns out to be complicated, I will stay with my own listbox header object.

many thanks

1 Like