looking for workaround re bug in listbox

[Nifrabar]

Hi!
The listbox is having a bug.
Disabled items cannot be selected with mouse.
Using keyboard you can!

Is there a known workaround?

I tried in interactivechange method:
if this.enabled = .F.
keyboard "{MOUSE}"
endif
but without result
my philosophy was :
if item is disabled than simulate a mouseclick ( keyboard "{MOUSE}") as with a real mouseclick it is not possible to select a disables item.

any suggestions?
-Bart

 

[Olaf Doschke]

first this.enabled is only determining the enabled status of the whole listbox. As in any method of a control, THIS is the control, not this item.

On the other side you're right, this bug exists and there is a workaround by using AddItem, see here:

http://support.microsoft.com/kb/156737/en-us

Bye, Olaf.

 

[Nifrabar]

Olaf,

Thanks for pointing me to the workaround.
Going to see how I can adapt this solution.

-Bart

 

[Nifrabar]

Olaf,
I used the workaround and it does as expected (with one column in use)
Now I added a 2nd column. The only way I could achieve this was with AddListItem()

select "view4"
GO top

FOR i = 1 TO lnRows
	thisform.bvs_lst3.AddItem[(view4.kenmerk),i,1]
	thisform.bvs_lst3.AddlistItem[TRANSFORM(view4.nkenm_ID),i,2]
	SKIP
ENDFOR

That made available the 2nd column.
Than I wanted to give the disabled items a different color.
For test I did :
thisform.bvs_lst3.disableditemBackColor=rgb(255,0,0)
With only one column did works. With the 2nd column added it fails.
Should this be another bug? Or do I oversee some?

-Bart

 

[Olaf Doschke]

In the first place, the workaround is not only to use AddItem(), but also precede the items with "\]" to mark them as disabled. Did you read through the link I pointed you to? Did you add the prefix into the kenmerk field?

In regard to seconadary columns I think you better go over to a grid instead, if that's what you need, listbox features like disabled items and itemtip only work with a single column.

In a grid you have much better control. Add a column with a selection checkbox and disable that for disabled items. Coloring is possible per column etc.

Use a grid for more complex lists.

Bye, Olaf.

 

[Mike Lewis]

I seem to remember a similar problem some years ago. If memory serves, I solved it by adding "\]" to the values in both the columns. I think there was a discussion of it here on Tek Tips, and I also wrote it up as a tip for FoxPro Advisor. (But it was a very long time ago.)

Mike


__________________________________
Mike Lewis (Edinburgh, Scotland)

Visual FoxPro articles, tips, training, consultancy

 

[Mike Lewis]

I just found the thread I referred to: thread184-1284343

As I thought, the solution is to add the backslash to the item in every column, not just the first.

Mike

__________________________________
Mike Lewis (Edinburgh, Scotland)

Visual FoxPro articles, tips, training, consultancy

 

[Olaf Doschke]

Mike,

I referenced

http://support.microsoft.com/kb/156737/en-us

And it tells to
1. use Additem() (instead of a alias rowsource or soomthing else)
2. preceed each item with "\]", not only "\" to also disable selection by keyboard (!)

I still say Bart should think about using a grid instead to gain more control on enabling/disabling and coloring.

Bye, Olaf.

 

[Nifrabar]

Olaf,

I'm with you that grid gives in many situations more flexbility.
Nevertheless I now have the listbox in a newly created mover-class which does what must be done.
If I could do a multiselect I probably should go to grid.

Mike,
Good brains ..;-) thread of 5 years ago!
Anyway it solved my problem.

Thanks again to both of you for taking the time to help!!

-Bart

 

[Mike Lewis]

Bart,

Good brains .... thread of 5 years ago!
Anyway it solved my problem.

Very unusual for me. Usually, I can't remember things I did last month.

Glad to hear the problem's solved.

Mike

__________________________________
Mike Lewis (Edinburgh, Scotland)

Visual FoxPro articles, tips, training, consultancy