How to find a verification routine that enables a button and a textbox

Question

I have an app (reverseme) that looks like calc.exe. It has 9 number btns, clear and enter buttons. The enter is disabled.

There is another input textbox without any enter or submit button. It takes inlut from the keyboard but when i press enter it doesnt throw any badboy or goodboy messages just a sound of a bad press.

I need to enable the enter button and find the serial.

The app compiled with borland and writteb in c++. It uses kernel32, user32, comctc32.

I have disabled the entered button by enabling it in reseditor and noping the disabling routine in the code but im shure there is another way.

Set the breakpoints described in Find a string that I entered in ollydbg to find the verification routine. — Jason Geffner, Jun 15 '15 at 13:14
The input is not submited because the enter and the textbox are disabled — Igal name, Jun 15 '15 at 14:16
So you set breakpoints on GetWindowText(), GetDlgItemText(), SendMessage(), etc. and saw none of the breakpoints hit while entering content into the textbox? — Jason Geffner, Jun 15 '15 at 14:18
A small screenshot might help. Additionally, the app may handle the WM_KEYDOWN within the message loop. You need to check that too. — 0xec, Jun 15 '15 at 15:43
Jason There is no reference of GetDigItem. I found the creation of the window when i set a bp on EnableWindow. And i found the decision making call that enables or disables the enter. I set a hw bp on write on the decision pointer but didn't found anything interesting — Igal name, Jun 16 '15 at 16:38

How to find a verification routine that enables a button and a textbox

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