internal void UpdateGroupNative(ListViewGroupEx group, bool invalidate = true)
{
using (NativeMethods.LVGROUP nGroup = new NativeMethods.LVGROUP(group))
{
nGroup.SetState(NativeMethods.ListViewGroupState.Collapsible, collapsible);
SendMessage(NativeMethods.ListViewMessage.SetGroupInfo, group.ID, nGroup);
}
if (invalidate)
{
base.Invalidate();
}
}
private static void SetState(ListViewGroup group, NativeMethods.ListViewGroupState state, bool value)
{
int groupId = GetGroupId(group);
if (groupId >= 0)
{
NativeMethods.LVGROUP lvgroup = new NativeMethods.LVGROUP(NativeMethods.ListViewGroupMask.State);
{
lvgroup.SetState(state, value);
NativeMethods.SendMessage(group.ListView.Handle, (uint)NativeMethods.ListViewMessage.SetGroupInfo, (IntPtr)groupId, lvgroup);
}
}
}
private void SetAllGroupState(NativeMethods.ListViewGroupState state, bool on = true)
{
NativeMethods.LVGROUP group = new NativeMethods.LVGROUP(NativeMethods.ListViewGroupMask.State);
group.SetState(state, on);
//group.Subtitle = "Dog";
foreach (ListViewGroup g in this.BaseGroups)
{
SendMessage(NativeMethods.ListViewMessage.SetGroupInfo, GetGroupId(g), group);
}
using (NativeMethods.LVGROUP grp = new NativeMethods.LVGROUP(NativeMethods.ListViewGroupMask.Subtitle))
{
int res = SendMessage(NativeMethods.ListViewMessage.GetGroupInfoByIndex, 0, grp);
if (res >= 0)
{
System.Diagnostics.Debug.WriteLine(grp.Subtitle);
}
}
RecreateHandle();
}
internal void SetGroupState(ListViewGroupEx group, NativeMethods.ListViewGroupState item, bool value)
{
NativeMethods.LVGROUP mgroup = new NativeMethods.LVGROUP(NativeMethods.ListViewGroupMask.State);
mgroup.SetState(item, value);
SendMessage(NativeMethods.ListViewMessage.SetGroupInfo, GetGroupId(group), mgroup);
}