Взаимодействие с другими языками

The following example demonstrates procedures that provide the capibility of sending keystrokes to any window control capable of receiving keyboard input. You may use this technique to toggle the num lock, caps lock, and scroll lock keys under Windows NT. This same technique works for toggling caps lock and scroll lock keys under Windows 95, but it will not work for num lock.

 

Note that there are four procedures provided: SimulateKeyDown(), SimulateKeyUp(), SimulateKeystroke(), and SendKeys(), to allow greater control in your ability to send keystrokes.

 

The SimulateKeyDown(), SimulateKeyUp(), and SimulateKeystroke() procedures expect a virtural key code (like VK_F1). The SimulateKeystroke() procedure accepts an extra parameter that is useful when simulating the PrintScreen key. When extra is set to zero, the entire screen will be captured to the windows clipboard. When extra is set to one, only the active window will be captured.

 

Подробности

Родительская категория: Язык программирования Дельфи

Категория: Взаимодействие с другими языками