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Simple calculator

To leran myself how to prgram with VC I tried to make a simple calculator.

One Input form, with three numeric input fields, NUM1, NUM2, NUM3. And one button 'Add', with the submit form action.

I defined the value of NUM3 as '@NUM1+@NUM2'.

But nothing happens. Isn't it that simple?

Where can I find I simple tutorial to start with?

Former Member

Hi Jan,

The problem is the refresh, when the form is charged NUM3 has the value NUM1+NUM2 but is empty.

May be you should be hide the NUM3 and displayed in other form after push the button... other way would be use a "expresion box" (no "input field" ) in result field.

The best place to start with VC is



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