/// <summary>
/// When our handle is removed we give the hdr_contrl a little
/// help by telling him now is a good time to release its handle.
/// From now on, we do not have a hdr_contrl instance active
/// so we set hdr_contrl to null and don't use it until reset.
/// </summary>
/// <param name="e">Event</param>
protected override void OnHandleDestroyed( System.EventArgs e )
{
// free and then delete the ListViewFilterHeader control
if( _headerControl != null )
{
_headerControl.ReleaseHandle();
_headerControl = null;
}
// do this AFTER we tell the ListViewFilterHeader to release
base.OnHandleDestroyed( e );
}
/// <summary>
/// When the handle changes we need to recreate the Filter
/// Header instance. The previous (if any) header instance
/// was tied to a handle that is now gone.
/// </summary>
/// <param name="e">Event</param>
protected override void OnHandleCreated( System.EventArgs e )
{
base.OnHandleCreated( e );
// now that we have a handle, create the HeaderControl instance
_headerControl = new FilteredListViewHeader( this, _showFilters,
_sortColumn, _sortOrderAscending );
SendMessage( this.Handle, W32_LVM.LVM_SETSELECTEDCOLUMN, _sortColumn, 0 );
SendMessage( this.Handle, W32_LVM.LVM_UPDATE, 0, 0 );
}
private RECT col_rectng = new RECT(); // HDITEM instance
#endregion Fields
#region Constructors
/// <summary>
/// Constructor this must be given the header instance for access
/// to the Handle property so that messages can be sent to it.
/// </summary>
/// <param name="header">HeaderControl</param>
public ColumnSizeInfoCollection( FilteredListViewHeader header )
{
col_hdrctl = header;
}
private HDITEM col_hditem = new HDITEM(); // HDITEM instance
#endregion Fields
#region Constructors
/// <summary>
/// Constructor this must be given the header instance for access
/// to the Handle property so that messages can be sent to it.
/// </summary>
/// <param name="header">HeaderControl</param>
public ColumnNamesCollection( FilteredListViewHeader header )
{
col_hdrctl = header;
}
private HDITEM col_hditem = new HDITEM(); // HDITEM instance
#endregion Fields
#region Constructors
/// <summary>
/// Constructor this must be given the header instance for access
/// to the Handle property so that messages can be sent to it.
/// </summary>
/// <param name="header">HeaderControl</param>
public ColumnDataTypeCollection( FilteredListViewHeader header )
{
col_hdrctl = header;
}
private HDITEM col_hditem = new HDITEM(); // HDITEM instance
#endregion Fields
#region Constructors
/// <summary>
/// Constructor this must be given the header instance for access
/// to the Handle property so that messages can be sent to it.
/// </summary>
/// <param name="header">HeaderControl</param>
public ColumnAlignmentCollection( FilteredListViewHeader header )
{
col_hdrctl = header;
}