X# Runtime and VO SDK Reference
X# Runtime and SDK Reference
VO Namespace
Window Class
Window Methods
Window.Activate Method
Window.AddTrayIcon Method
Window.AnimationStart Method
Window.AnimationStop Method
Window.AppCommand Method
Window.ButtonClick Method
Window.ButtonDoubleClick Method
Window.CanvasErase Method
Window.Center Method
Window.Close Method
Window.ComboBoxExEndEdit Method
Window.ComboBoxExNotify Method
Window.ControlNotify Method
Window.DateTimeSelectionChanged Method
Window.DeActivate Method
Window.Default Method
Window.Destroy Method
Window.Disable Method
Window.Dispatch Method
Window.Draw Method
Window.DrawBackground Method
Window.Drop Method
Window.EditChange Method
Window.EditFocusChange Method
Window.EditScroll Method
Window.Enable Method
Window.EnableCloseBox Method
Window.EnableDragDropClient Method
Window.EnableDragDropServer Method
Window.EnableHelp Method
Window.EnableHelpButton Method
Window.EnableHelpCursor Method
Window.EnableThemeDialogTexture Method
Window.EnableToolTips Method
Window.Expose Method
Window.FocusChange Method
Window.GetAllChildren Method
Window.GetExStyle Method
Window.GetStyle Method
Window.Handle Method
Window.HasExStyle Method
Window.HasStyle Method
Window.HelpRequest Method
Window.Hide Method
Window.HorizontalScroll Method
Window.HorizontalSlide Method
Window.HorizontalSpin Method
Window.IsEnabled Method
Window.IsIconic Method
Window.IsVisible Method
Window.IsZoomed Method
Window.KeyDown Method
Window.KeyUp Method
Window.LineTo Method
Window.ListBoxClick Method
Window.ListBoxSelect Method
Window.ListViewColumnClick Method
Window.ListViewItemChanged Method
Window.ListViewItemChanging Method
Window.ListViewItemDelete Method
Window.ListViewItemDrag Method
Window.ListViewItemEdit Method
Window.ListViewKeyDown Method
Window.ListViewMouseButtonDoubleClick Method
Window.ListViewMouseButtonDown Method
Window.MenuCommand Method
Window.MenuInit Method
Window.MenuSelect Method
Window.MinMaxInfo Method
Window.ModifyTrayIcon Method
Window.MonthCalSelectionChanged Method
Window.MouseButtonDoubleClick Method
Window.MouseButtonDown Method
Window.MouseButtonUp Method
Window.MouseDrag Method
Window.MouseMove Method
Window.MouseTrapOff Method
Window.MouseTrapOn Method
Window.Move Method
Window.MoveTo Method
Window.PaintBackground Method
Window.PaintBoundingBox Method
Window.PostInit Method
Window.PreInit Method
Window.Print Method
Window.QueryClose Method
Window.RegisterTimer Method
Window.RePaint Method
Window.RepaintBoundingBox Method
Window.Resize Method
Window.RichEditProtected Method
Window.RichEditSelectionChange Method
Window.RichEditUndoLost Method
Window.Scroll Method
Window.SetAlignStartSize Method
Window.SetBackgroundBrush Method
Window.SetExStyle Method
Window.SetFocus Method
Window.SetHandle Method
Window.SetStyle Method
Window.Show Method
Window.ShowBalloonTrayTip Method
Window.SizeText Method
Window.StatusMessage Method
Window.SysLinkSelect Method
Window.TabKeyDown Method
Window.TabSelect Method
Window.TabSelectionChanging Method
Window.TextPrint Method
Window.Timer Method
Window.ToolBarHeightChanged Method
Window.ToTop Method
Window.TrayIconBalloonClicked Method
Window.TrayIconBalloonShown Method
Window.TrayIconBalloonTimeOut Method
Window.TrayIconClicked Method
Window.TreeViewItemDelete Method
Window.TreeViewItemDrag Method
Window.TreeViewItemEdit Method
Window.TreeViewItemExpanded Method
Window.TreeViewItemExpanding Method
Window.TreeViewKeyDown Method
Window.TreeViewMouseButtonDoubleClick Method
Window.TreeViewMouseButtonDown Method
Window.TreeViewSelectionChanged Method
Window.TreeViewSelectionChanging Method
Window.Update Method
Window.VerticalScroll Method
Window.VerticalSlide Method
Window.VerticalSpin Method
Click or drag to resize

Window.TreeViewSelectionChanging Method

X#
Provide a method that is invoked when the selection is changing from one tree view item to another in a tree view control.

Namespace:  VO
Assembly:  VOGUIClasses (in VOGUIClasses.dll) Version: 2.21
Syntax
Copy
 VIRTUAL METHOD TreeViewSelectionChanging(
	oTreeViewSelectionEvent
) AS USUAL CLIPPER
Request Example View Source

Parameters

oTreeViewSelectionEvent (Optional)
Type: Usual
The TreeViewSelectionEvent object that describes which tree view control's selected item is changing.

Return Value

Type: Usual
This method calls Window.Default() and returns the result of Window.Default()
Remarks
Tip Tip
Important! This is a callback method used by X#. Normally, it should not be called in your application code.
See Also