/// <summary>
/// The set group state.
/// </summary>
/// <param name="lstvwgrp">
/// The lstvwgrp.
/// </param>
/// <param name="state">
/// The state.
/// </param>
private void SetGroupState(ListViewGroup lstvwgrp, ListViewGroupState state)
{
if (!SupportCollapsibleGroups)
{
return;
}
if (lstvwgrp == null)
{
return;
}
int? grpId = GetGroupID(lstvwgrp);
int grpIdParam = grpId ?? lstvwgrp.ListView.Groups.IndexOf(lstvwgrp);
LVGROUP group = new LVGROUP
{
CbSize = Marshal.SizeOf(typeof(LVGROUP)),
State = state,
Mask = ListViewGroupMask.State,
IGroupId = grpIdParam
};
SendMessage(this.Handle, (int)W32_LVM.LVM_SETGROUPINFO, grpIdParam, ref group);
}
public static extern int SendMessage(IntPtr hWnd, int Msg, int wParam, ref LVGROUP lParam);
/// <summary>
/// The set group footer.
/// </summary>
/// <param name="lstvwgrp">
/// The lstvwgrp.
/// </param>
/// <param name="footer">
/// The footer.
/// </param>
public void SetGroupFooter(ListViewGroup lstvwgrp, string footer)
{
if (!SupportCollapsibleGroups)
{
return;
}
if (lstvwgrp == null)
{
return;
}
int? grpId = GetGroupID(lstvwgrp);
int grpIdParam = grpId ?? this.Groups.IndexOf(lstvwgrp);
LVGROUP group = new LVGROUP
{
CbSize = Marshal.SizeOf(typeof(LVGROUP)),
PszFooter = footer,
Mask = ListViewGroupMask.Footer,
IGroupId = grpIdParam
};
SendMessage(lstvwgrp.ListView.Handle, (int)W32_LVM.LVM_SETGROUPINFO, grpIdParam, ref group);
}