2010-05-18 13:28:54 -06:00
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XIQUERYPOINTER(libmansuffix)
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============================
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NAME
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----
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XIQueryPointer - get device pointer coordinates.
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SYNOPSIS
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--------
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#include <X11/extensions/XInput2.h>
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Bool XIQueryPointer( Display *display,
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int deviceid,
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Window win,
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Window *root_return,
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Window *child_return,
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double *root_x_return,
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double *root_y_return,
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double *win_x_return,
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double *win_y_return,
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XIButtonState *buttons_return,
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XIModifierState *modifiers_return,
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XIGroupState *group_return);
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buttons_return
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Returns the current button state.
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child_return
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Returns the child window that the pointer is located in,
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if any.
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deviceid
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Specifies the device to query.
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display
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Specifies the connection to the X server.
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group_return
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Returns the current group state.
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modifiers_return
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Returns the current state of the modifier keys.
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root_return
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Returns the root window that the pointer is in.
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root_x_return, root_y_return
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Return the pointer coordinates relative to the root
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window's origin.
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win
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Specifies the window.
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win_x_return, win_y_return
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Return the pointer coordinates relative to the specified
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window.
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DESCRIPTION
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-----------
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The XIQueryPointer function returns the root window the
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device's pointer is logically on and the pointer coordinates
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relative to the root window's origin. If XIQueryPointer returns
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False, the pointer is not on the same screen as the specified
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window, and XIQueryPointer returns None to child_return and
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zero to win_x_return and win_y_return. If XIQueryPointer
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returns True, the pointer coordinates returned to win_x_return
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and win_y_return are relative to the origin of the specified
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window. In this case, XIQueryPointer returns the child that
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contains the pointer, if any, or else None to child_return.
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XIQueryPointer returns the current logical state of the buttons
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buttons_return. The keyboard paired with the master pointer is
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selected to obtain the data for modifiers_return and
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group_return.
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2011-07-02 15:14:36 -06:00
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The mask field in buttons_return is dynamically allocated and
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must be freed by the caller.
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2010-05-18 13:28:54 -06:00
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XIQueryPointer is identical to XQueryPointer but specifies the
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device explicitly.
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XIQueryPointer can generate a BadDevice and a BadWindow error.
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DIAGNOSTICS
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-----------
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BadDevice
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An invalid device was specified. The device does not
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exist or is not a pointer device.
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BadWindow
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A value for a Window argument does not name a defined
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window.
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SEE ALSO
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--------
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XQueryPointer(libmansuffix)
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