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Function "IndexFromPoint"

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lupotana
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lupotana asked on 08 Aug 2008, 09:54 AM
Hi,
in normal Listbox there's a function called IndexFromPointi.
This function received the position of mouse cursor (X and Y) and return the index of listbox

This function is not present in RadListBox ?

Thanks,
Marco Bianchi

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Angel
Telerik team
answered on 11 Aug 2008, 09:27 AM
Hello Marco,

Thank you for the suggestion for such an API. Your points have been updated for that.
Until we add the API, you can use the method given below:

private int IndexFromPoint(RadListBox listBox, Point pos)  
{  
    RadItem item = listBox.ElementTree.GetElementAtPoint(pos) as RadItem;  
    if (item != null)  
        return listBox.Items.IndexOf(item);  
    return -1;  

For example, the code in the handler for MouseMove event of RadListBox will be:

private void radListBox1_MouseMove(object sender, MouseEventArgs e)  
{  
    int indexUnderMouse = IndexFromPoint((RadListBox)sender, e.Location);  

If you have further questions, do not hesitate to write us.

Greetings,
Angel
the Telerik team

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