KeyPressEventIsTrailByte
- Updated2023-02-21
- 1 minute(s) read
KeyPressEventIsTrailByte
int KeyPressEventIsTrailByte (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 second byte of a two-byte character. If the callback's eventData1 parameter contains a trail byte, you can call GetKeyPressEventCharacter to get both bytes of the character.
Refer to the GetKeyPressEventCharacter function reference for an example of how to use this and other key press event functions.
Parameters
| Input | ||
| Name | Type | Description |
| eventData2 | int | The panel or control callback's eventData2 parameter. |
Return Value
| Name | Type | Description |
| isTrailByte | int | > 0 if the EVENT_KEYPRESS event is for a trail byte of a two-byte character. 0 if the EVENT_KEYPRESS event is not for a trail byte of a two-byte character. Negative values indicate that an error occurred. |
Additional Information
Library: User Interface Library
Include file: userint.h
LabWindows/CVI compatibility: LabWindows/CVI 6.0 and later