| SpreadsheetGear.Windows.Forms Namespace > ChartExplorer Class : PreviewKeyDown Event |
'Declaration<SRCategoryAttribute("Key")> <SRDescriptionAttribute("Occurs before the KeyDown event when a key is pressed while focus is on this control.")> Public Event PreviewKeyDown As System.Windows.Forms.PreviewKeyDownEventHandler
'UsageDim instance As ChartExplorer Dim handler As System.Windows.Forms.PreviewKeyDownEventHandler AddHandler instance.PreviewKeyDown, handler
[SRCategory("Key")] [SRDescription("Occurs before the KeyDown event when a key is pressed while focus is on this control.")] public event System.Windows.Forms.PreviewKeyDownEventHandler PreviewKeyDown
public event PreviewKeyDown: System.Windows.Forms.PreviewKeyDownEventHandler;
In JScript, you can handle the events defined by another class, but you cannot define your own.
[SRCategory("Key")] [SRDescription("Occurs before the KeyDown event when a key is pressed while focus is on this control.")] public: __event System.Windows.Forms.PreviewKeyDownEventHandler* PreviewKeyDown
[SRCategory("Key")] [SRDescription("Occurs before the KeyDown event when a key is pressed while focus is on this control.")] public: event System.Windows.Forms.PreviewKeyDownEventHandler^ PreviewKeyDown
The event handler receives an argument of type System.Windows.Forms.PreviewKeyDownEventArgs containing data related to this event. The following PreviewKeyDownEventArgs 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. |
| IsInputKey | Gets or sets a value indicating whether a key is a regular input key. |
| 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. |
| Shift | Gets a value indicating whether the SHIFT key was pressed. |
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