Some programs are not developed for users, but to work within the system. However, the overwhelming majority of programs are designed to "communicate" with the user and must respond to user actions - including button presses.
Instructions
Step 1
To recognize when a button is pressed, the program must have an event handler associated with the mouse and keyboard. If you need to process button clicks in the interface of the program itself, you need to catch the events of the form elements themselves. The JavaScript programming language uses the body element of the onkeydown page to handle event data. In order to determine which button has triggered the event, you need to request the keyCode button code from the event element.
Step 2
In the Delphi programming language, to handle keyboard events, you need to use objects of the TButton type and its properties and methods, such as TButton. Tag, TButton. OnClick, TButton. Parent and others. To find out which key triggered the event, use the TButton. Name string parameter. If you are more accustomed to using PHP in html pages, then process the response to a button click using the code $ submit = $ _ POST ['submit'], having previously mentioned the existence of an element with an input parameter in the page tags.
Step 3
How the application responds to a button press by the user depends on the programming language. Study the related section titled “Handling Keyboard Events” and experiment with practical examples. As practice shows, there is no special software for recognizing button presses on a personal computer. Such operations can only be implemented in programming, and even then, in some functions. If you have problems with pressing buttons from the keyboard while working on your computer, run diagnostics or even buy a new keyboard.
