The virtual-key codes identify various virtual keys. These constants can then be used to refer to the keystroke when using Delphi and Windows API calls or in an OnKeyUp or OnKeyDown event handler. Virtual keys mainly consist of actual keyboard keys, but also include virtual elements such as the three mouse buttons.he virtual-key codes identify various virtual keys. In Delphi, the OnKeyDown and OnKeyUp events provide the lowest level of keyboard response. To use OnKeyDown or OnKeyUp to test for keys the user presses, you must use Virtual key codes to get the key pressed.
What is WorldCat? WorldCat is the world's largest network of library content and services. WorldCat libraries are dedicated to providing access to their resources on the Web, where most people start their search for information. WorldCat.org lets you search the collections of libraries in your community and thousands more around the world.
In the singular form, the term world English refers to a movement to promote the use of English globally as an official lingua franca, a means of worldwide communication. There is, however, some concern about whether or not there should be a single standard form of this global language.