protected virtual bool ProcessPageKey(KeyEventArgs e)
{
if (this.textBoxElement.CanPerformAutoComplete)
{
return(this.textBoxElement.ListElement.ProcessKeyboardSelection(e.KeyCode));
}
if (!this.textBoxElement.Multiline)
{
return(false);
}
Keys keyCode = e.KeyCode;
TextBoxScroller vscroller = this.textBoxElement.ViewElement.VScroller;
int num1 = vscroller.Value;
int height = (int)vscroller.ClientSize.Height;
int num2 = keyCode != Keys.Prior ? num1 + height : num1 - height;
PointF position = (PointF)this.textBoxElement.Caret.Position;
vscroller.Value = num2;
if (vscroller.Value != num2)
{
return(false);
}
ITextBoxNavigator navigator = this.textBoxElement.Navigator;
TextPosition positionFromPoint = navigator.GetPositionFromPoint(position);
navigator.CaretPosition = positionFromPoint;
return(true);
}
public virtual bool ProcessMouseWheel(MouseEventArgs e)
{
int num1 = Math.Max(1, e.Delta / SystemInformation.MouseWheelScrollDelta);
int num2 = Math.Sign(e.Delta) * num1 * SystemInformation.MouseWheelScrollLines;
TextBoxScroller vscroller = this.textBoxElement.ViewElement.VScroller;
int num3 = vscroller.Value - num2 * vscroller.SmallChange;
vscroller.Value = num3;
return(false);
}
protected override void DisposeManagedResources()
{
base.DisposeManagedResources();
if (this.hScroller != null)
{
this.hScroller.Dispose();
this.hScroller = (TextBoxScroller)null;
}
if (this.vScroller == null)
{
return;
}
this.vScroller.Dispose();
this.vScroller = (TextBoxScroller)null;
}