Leadtools.Annotations Namespace > IAnnAutomationControl Interface : KeyDown Event |
event KeyEventHandler KeyDown
'Declaration Event KeyDown As KeyEventHandler
'Usage Dim instance As IAnnAutomationControl Dim handler As KeyEventHandler AddHandler instance.KeyDown, handler
event KeyEventHandler KeyDown
add_KeyDown(function(sender, e)) remove_KeyDown(function(sender, e))
event KeyEventHandler^ KeyDown
The event handler receives an argument of type KeyEventArgs containing data related to this event. The following KeyEventArgs properties provide information specific to this event.
Property | Description |
---|---|
Alt | Gets a value indicating whether the ALT key was pressed. |
Control | Gets a value indicating whether the CTRL key was pressed. |
Handled | Gets or sets a value indicating whether the event was handled. |
KeyCode | Gets the keyboard code for a System.Windows.Forms.Control.KeyDown or System.Windows.Forms.Control.KeyUp event. |
KeyData | Gets the key data for a System.Windows.Forms.Control.KeyDown or System.Windows.Forms.Control.KeyUp event. |
KeyValue | Gets the keyboard value for a System.Windows.Forms.Control.KeyDown or System.Windows.Forms.Control.KeyUp event. |
Modifiers | Gets the modifier flags for a System.Windows.Forms.Control.KeyDown or System.Windows.Forms.Control.KeyUp event. The flags indicate which combination of CTRL, SHIFT, and ALT keys was pressed. |
Shift | Gets a value indicating whether the SHIFT key was pressed. |
SuppressKeyPress | Gets or sets a value indicating whether the key event should be passed on to the underlying control. |
If your control is derived from the standard System.Windows.Forms.Control, then you do not need to implement this event (since the default System.Windows.Forms.Control.KeyDown will be used).
Target Platforms: Windows 7, Windows Vista SP1 or later, Windows XP SP3, Windows Server 2008 (Server Core not supported), Windows Server 2008 R2 (Server Core supported with SP1 or later), Windows Server 2003 SP2