Syntax
| Visual Basic (Declaration) | |
|---|---|
<SRDescriptionAttribute("Occurs when a key is first pressed.")>
<SRCategoryAttribute("Key")>
Public Event KeyDown As KeyEventHandler | |
| Visual Basic (Usage) |  Copy Code |
|---|---|
Dim instance As Medical3DControl Dim handler As KeyEventHandler AddHandler instance.KeyDown, handler | |
| C# | |
|---|---|
[SRDescriptionAttribute("Occurs when a key is first pressed.")]
[SRCategoryAttribute("Key")]
public event KeyEventHandler KeyDown | |
| C++/CLI | |
|---|---|
[SRDescriptionAttribute("Occurs when a key is first pressed.")]
[SRCategoryAttribute("Key")]
public:
event KeyEventHandler^ KeyDown | |
Event Data
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. |
Requirements
Target Platforms: Microsoft .NET Framework 2.0, Windows 2000, Windows XP, Windows Server 2003 family, Windows Server 2008 family, Windows Vista, Windows 7