public void SetState(TreeViewItemStates itemState, bool on = true)
{
mask |= TreeViewItemMask.TVIF_STATE;
stateMask |= itemState;
var tempState = State;
EnumExtensions.SetFlags(ref tempState, itemState, on);
state = (uint)tempState | (state & 0xFFFFFF00);
}
public bool GetState(TreeViewItemStates itemState) => State.IsFlagSet(itemState);
/// <summary>Gets the node values.</summary>
/// <param name="node">The <see cref="TreeNode"/> instance for which to get details.</param>
/// <param name="mask">The mask of items to get.</param>
/// <param name="stateMask">The mask of states to get.</param>
/// <returns>A <see cref="TVITEMEX"/> structure with the information.</returns>
public static TVITEMEX GetItem(this TreeNode node, TreeViewItemMask mask = (TreeViewItemMask)0x13FF, TreeViewItemStates stateMask = (TreeViewItemStates)0xFFFF)
{
var tvItem = new TVITEMEX
{
hItem = node.Handle,
mask = mask.SetFlags(TreeViewItemMask.TVIF_HANDLE).SetFlags(TreeViewItemMask.TVIF_TEXT, false),
stateMask = stateMask
};
SendMessage(node.TreeView.Handle, TreeViewMessage.TVM_GETITEM, default, ref tvItem);
