private IntPtr SetItemState(TreeNode node, int state, int stateMask)
{
Native.TV_ITEM lti = new Native.TV_ITEM();
lti.hItem = node != null ? node.Handle : IntPtr.Zero;
lti.mask = Native.TVIF_STATE | Native.TVIF_HANDLE;
lti.stateMask = stateMask;
lti.state = state;
return(Native.SendMessage(this.Handle, Native.TVM_SETITEM, 0, ref lti));
}
private int GetItemState(TreeNode node, int stateMask)
{
Native.TV_ITEM lti = new Native.TV_ITEM();
lti.hItem = node.Handle;
lti.mask = Native.TVIF_STATE | Native.TVIF_HANDLE;
lti.stateMask = stateMask;
lti.state = 0;
Native.SendMessage(this.Handle, Native.TVM_GETITEM, 0, ref lti);
return(lti.state);
}