Java java.awt Class MouseInfo（JDK8）

Method Detail

• getPointerInfo

  public static PointerInfo getPointerInfo()
                                    throws HeadlessException

  Returns a PointerInfo instance that represents the current location of the mouse pointer. The GraphicsDevice stored in this PointerInfo contains the mouse pointer. The coordinate system used for the mouse position depends on whether or not the GraphicsDevice is part of a virtual screen device. For virtual screen devices, the coordinates are given in the virtual coordinate system, otherwise they are returned in the coordinate system of the GraphicsDevice. See GraphicsConfiguration for more information about the virtual screen devices. On systems without a mouse, returns null.

  If there is a security manager, its checkPermission method is called with an AWTPermission("watchMousePointer") permission before creating and returning a PointerInfo object. This may result in a SecurityException.

  Returns:

  location of the mouse pointer

  Throws:

  HeadlessException - if GraphicsEnvironment.isHeadless() returns true

  SecurityException - if a security manager exists and its checkPermission method doesn't allow the operation

  Since:

  1.5

  See Also:

  GraphicsConfiguration, SecurityManager.checkPermission(java.security.Permission), AWTPermission

• getNumberOfButtons

  public static int getNumberOfButtons()
                                throws HeadlessException

  Returns the number of buttons on the mouse. On systems without a mouse, returns -1.

  Returns:

  number of buttons on the mouse

  Throws:

  HeadlessException - if GraphicsEnvironment.isHeadless() returns true

  Since:

  1.5