SftBox/OCX 4.5

SftBox.KeyDown Event

Softel vdm, Inc.

A key is pressed.

Syntax       

VB.NET

Private Sub object_KeyDownEvent(ByVal sender As Object, ByVal e As EventArgumentType) Handles object.KeyDownEvent

VB

Private Sub object_KeyDown(KeyCode As Integer, ByVal Shift As Integer)

C#.NET

void object_KeyDownEvent(object sender, EventArgumentType e);

VC++

void OnKeyDownobject(short* KeyCode, short Shift);

C

HRESULT OnKeyDownobject(short* KeyCode, short Shift);

Delphi

procedure objectKeyDown(Sender: TObject; var KeyCode : Smallint; Shift : Smallint);

object

A SftBox object.

KeyCode

The virtual key pressed. See your development environment documentation for available key code constants.

Shift

Describes the state of the SHIFT, CONTROL and ALT keys. A bit is set if the key is down. The Shift argument is a bit field with bits corresponding to the SHIFT, CONTROL and ALT keys. It indicates the state of these keys. Some, all, or none of the bits can be set, indicating which of the keys are pressed.

Shift

Value

Description

constSftBoxShiftMask

1

The SHIFT key is down.

constSftBoxCtrlMask

2

The CONTROL key is down.

constSftBoxAltMask

4

The ALT key is down.

Comments

The KeyDown event occurs when a key is pressed.

The KeyDown event is generated when the user presses a key while the control has the input focus.

If the control is part of a parent window (form, dialog, etc.) which has a default button (OK, Cancel) and the user presses the ENTER or ESCAPE keys, this event is not generated.

The KeyDown event is never generated for the TAB key.

To interpret keyboard characters (ANSI characters) use the KeyPress event instead.

The key typed by the user can be suppressed by setting KeyCode to 0. It can be modified by assigning a new value to the KeyCode variable.


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