Implement logic in TListView

[karl Jonson 0]

Hi,
If I had these options in TListView:
None
Not Known
OptionOne
OptionTwo

 

Which is the best way to implement this logic:
'None' option cannot be selected in conjunction with another options
'Not Known' option cannot be selected in conjunction with another options

TIA

[Stefan Glienke 2019]

Use the OnChanging event to allow or disallow selecting an item depending on the existing selection

[Stano 143]

In such cases I use RadioGroup. It is easier and the user immediately sees what he can and cannot do. The principle is the same.

[PeterBelow 239]

14 minutes ago, Stano said:

In such cases I use RadioGroup. It is easier and the user immediately sees what he can and cannot do. The principle is the same.

Does only work if only one item can be selected from the group, but IO think in OPs case selecting both OptionOne and OptionTwo would be valid.

[Stano 143]

Oh, I forgot that. So I use a separate RadioButton. And he put the buttons in groups.

[Stefan Glienke 2019]

I would probably design it like this (enabling and disabling the Checkboxes depending on RadioButton3 Checked)

 

 

[Fr0sT.Brutal 900]

del

Edited November 3, 2022 by Fr0sT.Brutal
nvm