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- java.lang.Object
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- java.awt.MouseInfo
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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.- Since:
- 1.5
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Method Summary
Methods Modifier and Type Method and Description static int
getNumberOfButtons()
Returns the number of buttons on the mouse.static PointerInfo
getPointerInfo()
Returns aPointerInfo
instance that represents the current location of the mouse pointer.
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Method Detail
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getPointerInfo
public static PointerInfo getPointerInfo() throws HeadlessException
Returns aPointerInfo
instance that represents the current location of the mouse pointer. TheGraphicsDevice
stored in thisPointerInfo
contains the mouse pointer. The coordinate system used for the mouse position depends on whether or not theGraphicsDevice
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 theGraphicsDevice
. SeeGraphicsConfiguration
for more information about the virtual screen devices. On systems without a mouse, returnsnull
.If there is a security manager, its
checkPermission
method is called with anAWTPermission("watchMousePointer")
permission before creating and returning aPointerInfo
object. This may result in aSecurityException
.- Returns:
- location of the mouse pointer
- Throws:
HeadlessException
- if GraphicsEnvironment.isHeadless() returns trueSecurityException
- if a security manager exists and itscheckPermission
method doesn't allow the operation- Since:
- 1.5
- See Also:
GraphicsConfiguration
,SecurityManager.checkPermission(java.security.Permission)
,AWTPermission
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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
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