This is a clearly shorter learning time than the over 100 hours found in the Dvorak vs Qwerty typewriter study ( Yamada, 1980). The user studies by Smith and Zhai (2001) and MacKenzie and Zhang (1999) indicate that the initial typing speed is moderate (around 10–15 words per minute), and it takes about 4 hours net training time to surpass the typing speed of the Qwerty layout. The results indicate that the alternative layouts could indeed increase text entry speed, even as much as about 50% ( Zhai et al., 2002)! It should be noted that speed is, however, not the only usability factor, and very few studies with actual users have been carried out. Therefore, their typing speed can be estimated by Fitts' law analysis ( Fitts, 1954 see also MacKenzie, 1992). The use of alternative virtual keyboards is based on straightforward pen tapping with one hand. Some proposed layouts are, for example, Fitaly ( tested by MacKenzie et al., 1999), OPTI ( MacKenzie & Zhang, 1999), Metropolis ( Zhai et al., 2000), and ATOMIK ( Zhai et al., 2002). Since the Space character is very common, many alternative layouts provide more than one Space key.

Sometimes also completely new keys are introduced. Since the virtual keys are pointed at with a stylus, the alternative layouts typically change the positions of the keys to minimize the time and effort needed for stylus movement. Therefore, it is no surprise that alternative layouts have been proposed also for this category of keyboards. Virtual keyboards are presented on the device screen and are therefore easy to change through software. Miika Silfverberg, in Text Entry Systems, 2007 Alternative Virtual Keyboards When the control gets focus, the keyboard will be shown.Historical Overview of Consumer Text Entry Technologies AssociatedControl - The control is associated with the virtual keyboard.None - The control is not associated with virtual keyboard.The AssociatedKeyboardType enumeration defines whether a control is associated to a virtual keyboard. RemoveAssociatedControl - Removes an associated control.When the associated control gains the focus the KeyboardForm will be shown. AddAssociatedControl - Adds an associated control.SetAssociatedKeyboardType - Sets the AssociatedKeyboardType to a given control.GetAssociatedKeyboardType - Gets the AssociatedKeyboardType of a given control.RadVirtualKeyboardForm offers the following methods which can be useful in different scenarios for managing the user's input: When the control gets focus, the keyboard will be shown.

Thus, the RadTextBox control is associated with the virtual keyboard.

AssociatedKeyboardType property to AssociatedControl. It is possible to associate a RadTextBox or any input control with the RadVirtualKeyboardForm by setting the AssociatedKeyboardType property of the respective input control. Me.RadVirtualKeyboardForm1.SetAssociatedKeyboardType(, AssociatedKeyboardType.AssociatedControl) Private Sub radGridView1_CellEditorInitialized(ByVal sender As Object, ByVal e As GridViewCellEventArgs)ĭim editor As RadTextBo圎ditor = Tr圜ast(e.ActiveEditor, RadTextBo圎ditor)ĭim element As RadTextBo圎ditorElement = Tr圜ast(editor.EditorElement, RadTextBo圎ditorElement) (, AssociatedKeyboardType.AssociatedControl) RadTextBo圎ditorElement element = editor.EditorElement as RadTextBo圎ditorElement RadTextBo圎ditor editor = e.ActiveEditor as RadTextBo圎ditor Private void radGridView1_CellEditorInitialized(object sender, GridViewCellEventArgs e)