![]() Note that this may be the window to which the input was originally delivered or it may be a window to which the message was forwarded. If the calling thread does not own the window to which the pointer message has been delivered, this function fails with the last error set to ERROR_ACCESS_DENIED. ![]() If the information associated with the message is no longer available, this function fails with the last error set to ERROR_NO_DATA. Use GetPointerInfoHistory to retrieve the message history from the most recent WM_POINTERUPDATE message. If the application does not process pointer input messages as fast as they are generated, some messages may be coalesced into a WM_POINTERUPDATE message. When the next message is retrieved by the calling thread, the information associated with the previous message may no longer be available. The information returned by GetPointerInfo is associated with the most recent pointer message retrieved by the calling thread. Use GetPointerFrameInfo to retrieve frame information associated with a message for a set of pointers. GetPointerInfo retrieves information for a single pointer associated with a pointer message. To get extended error information, call GetLastError. If the function fails, the return value is zero. If the function succeeds, the return value is non-zero. Scripting on this page tracks web page traffic, but does not change the content in any way.Address of a POINTER_INFO structure that receives the pointer information. Use is subject to license terms and the documentation redistribution policy. Java is a trademark or registered trademark of Oracle and/or its affiliates in the US and other countries.Ĭopyright © 1993, 2023, Oracle and/or its affiliates, 500 Oracle Parkway, Redwood Shores, CA 94065 USA.Īll rights reserved. Toolkit.getDesktopProperty()įor further API reference and developer documentation see the Java SE Documentation, which contains more detailed, developer-targeted descriptions with conceptual overviews, definitions of terms, workarounds, and working code examples.Returns: number of buttons on the mouse Throws: HeadlessException - if GraphicsEnvironment.isHeadless() returns true Since: 1.5 See Also: Which is set by the underlying native platform. The number of buttons is obtained from the AWT Toolkitīy requesting the "" desktop property Returns the number of buttons on the mouse. Returns: location of the mouse pointer Throws: HeadlessException - if GraphicsEnvironment.isHeadless() returns true SecurityException - if a security manager exists and itsĬheckPermission method doesn't allow the operation Since: 1.5 See Also: That means you have to add the MouseListener to that JPanel to get the right coordinates. You probably paint on a JPanel that you added to the JFrame. Permission before creating and returning a PointerInfo Retrieving mouse coordinates relative to a JFrame without a mouse event I have an iterator that needs mouse coordinates periodically while it's running - since i don't have an event to get the position from, i used this instead: Point p MouseInfo.getPointerInfo ().getLocation () int x p.x int y p. That's because you get the mouse coordinates relative to the JFrame but you don't paint directly on the frame. Is called with an AWTPermission("watchMousePointer") ![]() I need either and alternate method that gives the position of the mouse within the frame without an event, or a method to give the position of the frame relative. If there is a security manager, its checkPermission method Point p MouseInfo.getPointerInfo().getLocation() int x p.x int y p.y this gives the mouse position in the whole screen, but i need it relative to the frame i'm working with. On systems without a mouse, returns null. Since: 1.5 Method Summary Methods inherited from class java.lang. See GraphicsConfigurationįor more information about the virtual screen devices. MouseInfo provides methods for getting information about the mouse, such as mouse pointer location and the number of mouse buttons. For example, to detect that the ALT key was pressed, check whether GetKeyState (VKMENU) < 0. To determine the keyboard modifier key states associated with this message, use the GetKeyState function. The coordinate system used for the mouse positionĭepends on whether or not the GraphicsDevice is part of a virtualįor virtual screen devices, the coordinates are given in the virtualĬoordinate system, otherwise they are returned in the coordinate system To retrieve further information associated with the message, use the GetPointerInfo function. The GraphicsDevice stored in this PointerInfoĬontains the mouse pointer. Returns a PointerInfo instance that represents the current
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