public class MouseInfo extends Object
MouseInfo
provides methods for getting information about the mouse, such as mouse pointer location and the number of mouse buttons.Modifier and Type | Method | Description |
---|---|---|
static int |
getNumberOfButtons() |
Returns the number of buttons on the mouse. |
static PointerInfo |
getPointerInfo() |
Returns a PointerInfo instance that represents the current location of the mouse pointer. |
public static PointerInfo getPointerInfo() throws HeadlessException
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
.
HeadlessException
- if GraphicsEnvironment.isHeadless() returns trueSecurityException
- if a security manager exists and its checkPermission
method doesn't allow the operationpublic static int getNumberOfButtons() throws HeadlessException
-1
. The number of buttons is obtained from the AWT Toolkit by requesting the "awt.mouse.numButtons"
desktop property which is set by the underlying native platform.HeadlessException
- if GraphicsEnvironment.isHeadless() returns true
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https://docs.oracle.com/en/java/javase/21/docs/api/java.desktop/java/awt/MouseInfo.html