// To test if a list view item is offscreen, we need to
// take into account the fact that it may be obscured by
// the list view header.
internal override bool IsOffscreen()
{
IntPtr hwndHeader = WindowsListView.ListViewGetHeader(_hwnd);
if (hwndHeader != IntPtr.Zero)
{
NativeMethods.Win32Rect listViewRect = new NativeMethods.Win32Rect();
NativeMethods.Win32Rect headerRect = new NativeMethods.Win32Rect();
if (Misc.GetWindowRect(hwndHeader, ref headerRect) &&
Misc.GetClientRectInScreenCoordinates(_hwnd, ref listViewRect))
{
// Remove the listview header rect.
listViewRect.top = headerRect.bottom;
NativeMethods.Win32Rect itemRect =
new NativeMethods.Win32Rect(BoundingRectangle);
if (!listViewRect.IsEmpty &&
!Misc.IsItemVisible(ref listViewRect, ref itemRect))
{
return(true);
}
}
}
return(false);
}
IRawElementProviderSimple [] ITableItemProvider.GetColumnHeaderItems()
{
IntPtr hwndHeader = WindowsListView.ListViewGetHeader(_hwnd);
if (SafeNativeMethods.IsWindowVisible(hwndHeader))
{
WindowsSysHeader header = (WindowsSysHeader)WindowsSysHeader.Create(hwndHeader, 0);
return(new IRawElementProviderSimple [] { new WindowsSysHeader.HeaderItem(hwndHeader, header, _item) });
}
return(null);
}
//------------------------------------------------------
//
// Internal Methods
//
//------------------------------------------------------
#region Internal Methods
internal static int GetSubItemCount(IntPtr hwnd)
{
// Subitems are only available in details mode.
if (WindowsListView.IsDetailMode(hwnd))
{
IntPtr hwndHeader = WindowsListView.ListViewGetHeader(hwnd);
if (hwndHeader == IntPtr.Zero)
{
return(0);
}
return(WindowsListView.HeaderItemCount(hwndHeader));
}
return(-1);
}