//------------------------------------------------------
//
// Private Methods
//
//------------------------------------------------------
#region Private Methods
// retrieve current ToggleState
private ToggleState GetToggleState()
{
ListViewItem.CheckState current = (ListViewItem.CheckState)WindowsListView.GetCheckedState(_hwnd, _listviewItem);
switch (current)
{
case ListViewItem.CheckState.NoCheckbox:
{
throw new InvalidOperationException(SR.Get(SRID.OperationCannotBePerformed));
}
case ListViewItem.CheckState.Checked:
{
return(ToggleState.On);
}
case ListViewItem.CheckState.Unchecked:
{
return(ToggleState.Off);
}
}
// developer defined custom values which cannot be interpret outside of the app's scope
return(ToggleState.Indeterminate);
}
// detect if given listviewitem has a checkbox
internal static bool IsItemWithCheckbox(IntPtr hwnd, int item)
{
if (!WindowsListView.CheckBoxes(hwnd))
{
return(false);
}
// this listview supports checkbox, detect if
// current item has it
return(CheckState.NoCheckbox != (CheckState)WindowsListView.GetCheckedState(hwnd, item));
}
