alsoHi ,
I'd like to build a calculator in Excel in a Userform as an addin.
It should become a regular calculator with the normal buttons and
a textbox as display.

I already prepared the userform with the needed buttons such as :

Back CE C
MC 7 8 9 /
MR 4 5 6 *
MS 1 2 3 -
M- 0 00 . +
M+ 000 +/-

I'm stuck with the code for capturing the numeric values and the
allowed values.
I know i should only allow the numkeys and a few others , but here i'm
also stuck.
Is it possible to write this in Excel , and if so , could you help me
with the code ?