How to makle a error message from 3 edit boxes math.

Hi

Im looking for a code that makes an error message window pop out if, edit2 - edi1 ISNT EQUAL to edit3

So when I push the pushbutton and I've put edit1 = 1 and edit2 = 4 and then edit3 = 6 there should be a window message error that says it isnt equal.

And if I put edit1 = 2 edit2 = 6 and edit3 = 4. Then there shouldnt be a error message.

[Jan]

Please post the code as text, not as giantic screenshot. This has the advantage, that we could copy&paste your code to insert the solution - much more convenient for the ones, who want to create an answer to solve your problem.

Answer 1

[Jan]

function myCheck(value1, value2, value3)
if value2 - value1 ~= value3
  errordlg('The values do not match', 'My error dialog');
end

Now add a call to this function to the callback(s) you want to trigger the tests. A test for NaNs by isnan might be a good idea, if one field is empty of no valid number.

Do not be surprised, when the numbers 0.3, 0.2 and 0.1 do not lead to the expected results. Due to the limited precision 0.3-0.2 does not equal 0.1 perfectly.