Taxonomy Categories:
Member Functions:
Interface Category:
API.
Inherits From:
None.
Inherited By:
None.
Purpose:
Represents the keyboard device. It handles input from the keyboard device.
Instantiation:
Allocate on the heap or the stack.
Deriving Classes:
Normally you would not derive from this class. Rather, you would create a new TKeyboardInputDevice & TKeyboardDevice combination which will share the event message format.
Concurrency:
Not multithread safe.
Resource Use:
No special requirements.
TKeyboardDevice ()
Interface Category:
API.
Purpose:
Default constructor.
Calling Context:
Call this function directly.
Parameters:
Return Value:
None.
Exceptions:
Throws no exceptions, passes all exceptions through.
Concurrency:
Not multithread safe.
Other Considerations:
This class is not streamable.
virtual ~ TKeyboardDevice ()
Interface Category:
API.
Purpose:
Destructor.
Calling Context:
Called to destroy an object.
Parameters:
Return Value:
None.
Exceptions:
Throws no exceptions, passes all exceptions through.
Concurrency:
Not multithread safe.
Other Considerations:
None.
virtual void KeyDown (TVirtualKeyCode :: EVirtualKey key)
Interface Category:
API.
Purpose:
Sends a key-down event for the specified virtual key. This function should be called when the keyboard driver detects that a key has been pressed.
Calling Context:
Called by keyboard input device handlers on key down.
Parameters:
- TVirtualKeyCode :: EVirtualKey key -The key code corresponding to the key pressed down.
Return Value:
None.
Exceptions:
Throws no exceptions, passes all exceptions through.
Concurrency:
Not multithread safe.
Other Considerations:
None.
virtual void KeyUp (TVirtualKeyCode :: EVirtualKey key)
Interface Category:
API.
Purpose:
Sends a key-up event for the specified virtual key. This function should be called when the keyboard driver detects that a key has been released.
Calling Context:
Called by keyboard input device handlers on key up.
Parameters:
- TVirtualKeyCode :: EVirtualKey key -The key code corresponding to the key up.
Return Value:
None.
Exceptions:
Throws no exceptions, passes all exceptions through.
Concurrency:
Not multithread safe.
Other Considerations:
None.
Member Function: TKeyboardDevice::ModifierKeyDown
virtual void ModifierKeyDown (TVirtualKeyCode :: EVirtualKey key)
Interface Category:
API.
Purpose:
Sends a modifier key-down event for the specified virtual key. This function should be called when the keyboard driver detects that a modifier key has been pressed.
Calling Context:
Called by keyboard input device handlers on modifier key down.
Parameters:
- TVirtualKeyCode :: EVirtualKey key -The key code corresponding to the modifier key down.
Return Value:
None.
Exceptions:
Throws no exceptions, passes all exceptions through.
Concurrency:
Not multithread safe.
Other Considerations:
None.
Member Function: TKeyboardDevice::ModifierKeyUp
virtual void ModifierKeyUp (TVirtualKeyCode :: EVirtualKey key)
Interface Category:
API.
Purpose:
Sends a modifier-key up event for the specified virtual key. This function should be called when the keyboard driver detects that a modifier key has been released.
Calling Context:
Called by keyboard input device handlers on modifier key up.
Parameters:
- TVirtualKeyCode :: EVirtualKey key -The key code corresponding to the modifier key up.
Return Value:
None.
Exceptions:
Throws no exceptions, passes all exceptions through.
Concurrency:
Not multithread safe.
Other Considerations:
None.
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