Plus key & code 187?

I cannot find documentation for some KeyCodes I used in an application I wrote 2-3 years ago. There might be other useful data in such documentation.

In a KeyDown Event Subroutine, my code has the following If Statement.

VB Code:

If KeyCode = vbKeyAdd Or KeyCode = 187 Then
            ‘Code for Plus-Key
        ElseIf KeyCode = vbKeySubtract Or KeyCode = 189 Then
            ‘Code for Minus-Key
        Else
    End If

The above does just what I want, but I no longer remember how I decided to use KeyCodes 187 & 189.

187 seems to relate to the Keyboard key with + = on it.
189 seems to relate to the Key with _ - on it.

My Visual Basic 6.0 Language Reference Manual shows codes 187 189 to be >> 1/2

The code works if the above keys are used with or without a shift key.

Where is there documentation about things like the above?

The KeyDown event has the KeyCode parameter. The KeyPress event has the KeyAscii parameter. Technically, they are not the same thing, although many keycode constants have the same Ascii value (numeric keys 0-9 and capitol letters A-Z) many do not.

As you noted,

KeyAscii 187 is >>, KeyCode 187 is the += key (the ascii code for the + sign is 43).

The constant vbKeyAdd refers to the + key on the keypad. You probably used "Or KeyCode = 187" because there is no intrinsic constant for the += key. Thus your code handles both + key's that are available on a keyboard. If however, you needed to distinguish between the = and +, then you would need to check the Shift parameter of the KeyDown event.

To duplicate your code in the KeyDown event into the KeyPress event you would need to write ( again this forces the user to do a Shift +, if not using the keypad)

If Keyascii = 43 Then

ElseIf Keyascii = 45 Then
..

There are topics in msdn called KeyCode Constants and Ascii Character Codes.