path: root/man/XQueryPointer.man

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.\" $XFree86: xc/doc/man/X11/XQPointer.man,v 1.2 2001/01/27 18:20:02 dawes Exp $
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.ds xT X Toolkit Intrinsics \- C Language Interface
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.TH XQueryPointer __libmansuffix__ __xorgversion__ "XLIB FUNCTIONS"
.SH NAME
XQueryPointer \- get pointer coordinates
.SH SYNTAX
.HP
Bool XQueryPointer\^(\^Display *\fIdisplay\fP\^, Window \fIw\fP\^, Window
*\fIroot_return\fP\^, Window *\fIchild_return\fP\^, int
*\fIroot_x_return\fP\^, int *\fIroot_y_return\fP\^, int *\fIwin_x_return\fP\^,
int *\fIwin_y_return\fP\^, unsigned int *\fImask_return\fP\^); 
.SH ARGUMENTS
.IP \fIchild_return\fP 1i
Returns the child window that the pointer is located in, if any.
.IP \fIdisplay\fP 1i
Specifies the connection to the X server.
.IP \fImask_return\fP 1i
Returns the current state of the modifier keys and pointer buttons.
.ds Ro that the pointer is in
.IP \fIroot_return\fP 1i
Returns the root window \*(Ro.
.IP \fIroot_x_return\fP 1i
.br
.ns
.IP \fIroot_y_return\fP 1i
Return the pointer coordinates relative to the root window's origin.
.IP \fIw\fP 1i
Specifies the window.
.IP \fIwin_x_return\fP 1i
.br
.ns
.IP \fIwin_y_return\fP 1i
Return the pointer coordinates relative to the specified window.
.SH DESCRIPTION
The
.ZN XQueryPointer
function returns the root window the pointer is logically on and the pointer
coordinates relative to the root window's origin.
If
.ZN XQueryPointer
returns 
.ZN False , 
the pointer is not on the same screen as the specified window, and
.ZN XQueryPointer
returns 
.ZN None
to child_return and zero to win_x_return and win_y_return.
If 
.ZN XQueryPointer
returns 
.ZN True , 
the pointer coordinates returned to win_x_return and win_y_return
are relative to the origin of the specified window.
In this case, 
.ZN XQueryPointer
returns the child that contains the pointer, if any,
or else
.ZN None
to child_return.
.LP
.ZN XQueryPointer
returns the current logical state of the keyboard buttons 
and the modifier keys in mask_return.
It sets mask_return to the bitwise inclusive OR of one or more
of the button or modifier key bitmasks to match 
the current state of the mouse buttons and the modifier keys.
.LP
.ZN XQueryPointer
can generate a
.ZN BadWindow 
error.
.SH DIAGNOSTICS
.TP 1i
.ZN BadWindow
A value for a Window argument does not name a defined Window.
.SH "SEE ALSO"
XGetWindowAttributes(__libmansuffix__),
XQueryTree(__libmansuffix__)
.br
\fI\*(xL\fP