public DataTipForm()
{
InitializeComponent();
rowLayout = new AutoRowHeightLayout(Tree, Tree.RowHeight);
Tree.Cursor = Cursors.Default;
Tree.ShowLines = false;
Tree.Expanded += Tree_SizeChanged;
Tree.Collapsed += Tree_SizeChanged;
DataTree.ValueChanged += Tree_SizeChanged;
}
public TreeViewAdv()
{
this.BackColor = SystemColors.Window;
SetStyle(ControlStyles.AllPaintingInWmPaint
| ControlStyles.UserPaint
| ControlStyles.OptimizedDoubleBuffer
| ControlStyles.ResizeRedraw
| ControlStyles.Selectable
, true);
_rowLayout = new AutoRowHeightLayout(this, 0);
_rowMap = new List <TreeNodeAdv>();
_selection = new List <TreeNodeAdv>();
_readonlySelection = new ReadOnlyCollection <TreeNodeAdv>(_selection);
_columns = new TreeColumnCollection(this);
_toolTip = new ToolTip {
ShowAlways = true
};
//_measureContext = new DrawContext();
//_measureContext.Font = Font; //au: will set in OnFontChanged
//_measureContext.Graphics = Graphics.FromImage(new Bitmap(1, 1));
_measureContext.Graphics = Graphics.FromHwndInternal(default); //au