KeyDown, KeyUp Events

NI Vision for Visual Basic

KeyDown, KeyUp Events

Syntax

Sub ControlName_KeyDown(KeyCode, Shift)

Sub ControlName_KeyUp(KeyCode, Shift)

Applies To

CWIMAQViewer

Purpose

KeyDown fires when you press a key while the control has the input focus.

KeyUp fires when you release a key while the control has the input focus.

Parameters

KeyCode As Integer

A code representing the pressed key. This code represents the key rather than the ASCII value of the key. For example, pressing the <A> key produces the value 65. Pressing <#> , or <Shift-3> , produces the code for "3".

Shift As Integer

The Shift argument can be any combination of the following values: 1 for <Shift> , 2 for <Ctrl> , or 4 for <Alt> . For example, if you press the <Shift> and <Ctrl> keys, the value is 3 (1 + 2).

See Also

KeyPress