When you have entered the text box, it is the same as pressing the OK key! Use method collection for carriage returns

When you have finished typing in the text box, knocking in the carriage is the same as pressing the OK key. -------------Delphi Two methods: 1, in the onkeypress event to determine the return key; 2, respond to the OnValidate event in the text box. Where to find the key. It's the OK button on the interface. One method is to set the default property of the OK button to true so that pressing ENTER on the interface, except for the other buttons, executes the event that determines the button. Another method is to write in the onkeypress event of the text box: if key= #13 then Btn_okclick (Sender); BTN_OK is the OK button. The KeyPreview of the form is set to true; Edit1 onkeypress write: If key= #13 then begin key:= #0; Edit2. SetFocus end; ----------Java-------------the ability to log in by enter in the Password input box//------------C #---------------C # 's carriage return notation is similar to Javescript if (E.keychar ==13) {MessageBox ("carriage return corresponding Success ~ ~");}