private static bool GetState(ListViewGroup group, ComCtl32.ListViewGroupState state)
{
var groupId = GetGroupId(group);
if (groupId < 0)
{
return(false);
}
return((SendMessage(new HandleRef(group.ListView, group.ListView.Handle), (uint)ComCtl32.ListViewMessage.LVM_GETGROUPSTATE, (IntPtr)groupId, new IntPtr((int)state)).ToInt32() & (int)state) != 0);
}
private static void SetState(ListViewGroup group, ComCtl32.ListViewGroupState state, bool value)
{
var groupId = GetGroupId(group);
if (groupId >= 0)
{
var lvgroup = new ComCtl32.LVGROUP(ComCtl32.ListViewGroupMask.LVGF_STATE);
{
lvgroup.SetState(state, value);
SendMessage(new HandleRef(group.ListView, group.ListView.Handle), ComCtl32.ListViewMessage.LVM_SETGROUPINFO, groupId, lvgroup);
}
}
}
