Treat clicks as CTRL+clicks in ListView

Question

I have a multi-column ListView control set to MultiSelect and Details view. When a user clicks on any item on the list, I want to treat it as if they CTRL+clicked on the item. So, if they click on an item that is already selected, it will deselect it. Or, if they select a second item, it will select it without deselecting other selected items. This is for a kiosk-style app, where input is done via touch screen and a keyboard may or may not be available to the user.

Answer 1

You can do that by handling MouseUp event and use HitTest to check which item has been clicked. Then set Selected property of the item:

item.Selected ^= true

You may also check out freeware component Better ListView Express from ComponentOwl. It has powerful owner drawing that allows you to display items in any state . It also allows you to customize height of items. The full version offers even more interesting features.

Answer 2

You might consider using ListBox instead, in owner drawn mode.

http://msdn.microsoft.com/en-us/library/system.windows.forms.listbox.aspx

and

http://msdn.microsoft.com/en-us/library/system.windows.forms.listbox.drawmode.aspx