Visual Basic Concepts
The KeyPress event can process a double-byte character code as one event. The higher byte of the keyascii argument represents the lead byte of a double-byte character, and the lower byte represents the trail byte.
In the following example, you can pass a KeyPress event to a text box, whether the character you input is single-byte or double-byte.
Sub Text1_KeyPress (KeyAscii As Integer)
Mychar = Chr(KeyAscii)
' Perform an operation using Mychar.
End Sub
For More Information See "KeyPress Event" in the Language Reference.