The degree of support for a device's keypad depends largely on two factors:

• The keys provided on the keypad...
   
  In the U.S. a typical desktop PC keyboard has 101 keys.  Some handheld device keypads may have as few as 20 keys while others may have as many as 56 or 64 keys.  It is therefore possible, and in some cases quite likely, that the device keypad could be missing one or more essential navigation or data entry keys.
• The keypad's conformance to Microsoft Windows standards...
   
  Each key on a keypad is associated with a specific code.  When a key is pressed on a keypad, the currently running application is notified.  The notification includes the code for the key that was pressed.
   
  Microsoft Windows defines a unique code for every key.  For example, the Microsoft Windows code for the F1 function key is 16777226.  Other keys have similar codes.  If the device keypad does not comply with the Microsoft Windows codes, then support for the keypad within DPS PocketFlash™ will be less than 100%.

• Standard Navigation
• Common Keypad Shortcuts
• DPS PocketFlash™ Exceptions
• Triggering Menubar Actions

1. The Tab key moves the cursor forward from one input field to another.  Shift+Tab moves the cursor backward from one input field to another.  In the context of navigation, an input field is a:
   • Text box
   • Single-line dropdown selection list
   • Multi-line standard selection list
   • Command button
   • Checkbox
   • Radio button
   • Table
   • Tree
    
   Note that only a text box actually shows a blinking cursor.  Other input fields typically show that they have control of the cursor by displaying a focus rectangle or other focus indicator.
2. When tabbing forward out of the last input field on a window, the cursor wraps or moves to the first input field.
3. When tabbing backward out of the first input field on a window, the cursor wraps or moves to the last input field.
4. When the cursor is in a text box:
   • The left and right arrow keys move the cursor from one character to another.
5. When the cursor is in a single-line dropdown selection list, the navigation varies depending on whether the list of items is hidden or showing:
   • When the list of items is hidden:  The up and down arrow keys step through the items in the list.  An item is immediately selected with each press of an arrow key and any processing associated with the selection is performed.  An alternate way of navigating the list of items is to show the list.  Alt+ArrowDown or Alt+ArrowUp shows the list of items.
   • When the list of items is showing, the up and down arrow keys move up and down the list.  The current item is shown as highlighted in the list.  No actual selection occurs until Enter, Tab, Alt+ArrowDown or Alt+ArrowUp is pressed.  Pressing Enter, Tab, Alt+ArrowDown or Alt+ArrowUp hides the list of items, selects the highlighted item and performs any processing associated with the selection.  Pressing ESC (escape) while the list is showing hides the list and effectively cancels any arrow navigation that occurred while the list was showing (i.e. the selected item remains as it was before the list was shown).
6. When the cursor is in a multi-line standard selection list:
   • The up and down arrow keys allow the user to move up and down the list.  The current item is shown as highlighted in the list.  Pressing Enter selects the highlighted item and performs any processing associated with the selection.
7. When the cursor is on a command button:
   • Pressing Enter activates (selects) the button and performs any processing associated with the selection.
8. When the cursor is on a checkbox or a radio button:
   • Pressing the spacebar toggles the checked or selected state.
9. When the cursor is in a table or a tree:
   • The up and down arrow keys allow the user to move from one row in the table to another.  The current row is shown as highlighted.  Pressing the Enter key selects the highlighted row and performs any processing associated with the selection.

• Use Ctrl+X to Cut text and place it in the clipboard.
• Use Ctrl+C to Copy text and place it in the clipboard.
• Use Ctrl+V to Paste text that has been placed in the clipboard.

• The Date Selector window.
  The calendar displayed on the window is a native Pocket PC calendar.  Microsoft designed the calendar to interact with the user via the touch screen.  The device keypad is incapable of interacting with the calendar.  Date selection must therefore be performed with the stylus.
• The Set Preferences window.
  The table of Current Settings does not support the Enter key as described above in Standard Navigation item 9.  The Enter key is not supported in the table because the Enter key is already being used as the keypad trigger for saving the window's information to the database (see next topic).

• F1 = Ctrl+1
• F2 = Ctrl+2
• F3 = Ctrl+3
• F4 = Ctrl+4
• F5 = Ctrl+5
• F6 = Ctrl+6
• F7 = Ctrl+7
• F8 = Ctrl+8
• F9 = Ctrl+9
• F10 = Ctrl+0 (zero)
• F11 = Ctrl+- (hyphen)
• F12 = Ctrl+= (equals)