I am looking for a simple calculator program to incorporate into my application. I only need the basic arithmetical calculations. Storing some numbers (M+, M-, etc) would be nice, but not mandatory. I need one where I would have a royalty-free license, etc.

I could use the one that Microsoft included in my Visual Basic CDs but I want to be able to paste the result into the textbox that I just left. I have set the textbox on Form1 up so that a double click of that textbox calls up the Calculator, but the Calculator will not paste the Calculator result into the textbox.

I also want to be able to enter the numbers and operators by keyboard as well as by mouse.

Thanks.