| SendKey(Keys, KeyBehavior) | Sends a keystroke to the active window. |
| SendKey(VirtualKeys, KeyBehavior) | Sends a keystroke to the active window. |
| SendKey(IntPtr, VirtualKeys, KeyBehavior) | Sends a keystroke to the specified window. |
| SendKey(IntPtr, Keys, KeyBehavior) | Sends a keystroke to the specified window. |