This content is no longer actively maintained. It is provided as is, for anyone who may still be using these technologies, with no warranties or claims of accuracy with regard to the most recent product version or service release.
The ability to receive user input through mouse or keyboard actions or the SetFocus method. In Microsoft Windows, only one item at a time can have the focus. For example, when you type a string, the string appears in a text box only if the text box has the focus.