# KeyPressEventIsLeadByte

int KeyPressEventIsLeadByte (int eventData2);

## Purpose

Call this function when you receive an EVENT_KEYPRESS in a panel or control callback to determine if the callback's eventData1 parameter contains the first byte of a two-byte character. If the callback's eventData1 parameter contains a lead byte, the trail byte will be in the next EVENT_KEYPRESS event for that panel or control. National Instruments recommends that you ignore EVENT_KEYPRESS events that contain the first byte of a two-byte character.

## Parameters

Input
Name | Type | Description
eventData2 | int | The panel or control callback's eventData2 parameter.

## Return Value

Name | Type | Description
isLeadByte | int | > 0 if the EVENT_KEYPRESS event is for a lead byte of a two-byte character. 0 if the EVENT_KEYPRESS event is not for a lead byte of a two-byte character. Negative values indicate that an error occurred.