192 lines
4.2 KiB
Plaintext
192 lines
4.2 KiB
Plaintext
.ds xT X Toolkit Intrinsics \- C Language Interface
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.ds xW Athena X Widgets \- C Language X Toolkit Interface
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.ds xL Xlib \- C Language X Interface
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.ds xC Inter-Client Communication Conventions Manual
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.na
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.de Ds
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.nf
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.\\$1D \\$2 \\$1
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.ft 1
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.\".ps \\n(PS
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.de FD
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.LP
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.de C{
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. \" Note End -- doug kraft 3/85
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.ny0
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.TH XQueryPointer 3X11 "Release 5" "X Version 11" "XLIB FUNCTIONS"
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.SH NAME
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XQueryPointer \- get pointer coordinates
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.SH SYNTAX
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.\" $Header: XQueryPntr.f,v 1.1 88/02/26 10:02:18 mento Exp $
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Bool XQueryPointer\^(\^\fIdisplay\fP, \fIw\fP\^, \fIroot_return\fP\^, \fIchild_return\fP\^, \fIroot_x_return\fP\^, \fIroot_y_return\fP\^,
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.br
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\fIwin_x_return\fP\^, \fIwin_y_return\fP\^, \fImask_return\fP\^)
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.br
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Display *\fIdisplay\fP\^;
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.br
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Window \fIw\fP\^;
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.br
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Window *\fIroot_return\fP\^, *\fIchild_return\fP\^;
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.br
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int *\fIroot_x_return\fP\^, *\fIroot_y_return\fP\^;
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.br
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int *\fIwin_x_return\fP\^, *\fIwin_y_return\fP\^;
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.br
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unsigned int *\fImask_return\fP\^;
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.SH ARGUMENTS
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.IP \fIchild_return\fP 1i
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Returns the child window that the pointer is located in, if any.
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.\" $Header: display.a,v 1.1 88/02/26 10:26:29 mento Exp $
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.IP \fIdisplay\fP 1i
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Specifies the connection to the X server.
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.\" $Header: mask1.a,v 1.1 88/02/26 10:28:48 mento Exp $
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.IP \fImask_return\fP 1i
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Returns the current state of the modifier keys and pointer buttons.
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.ds Ro that the pointer is in
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.\" $Header: root_gen.a,v 1.2 88/08/04 11:19:15 mento Exp $
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.IP \fIroot_return\fP 1i
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Returns the root window \*(Ro.
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.\" $Header: rootxy.a,v 1.2 88/08/17 09:03:18 mento Exp $
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.IP \fIroot_x_return\fP 1i
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.br
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.ns
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.IP \fIroot_y_return\fP 1i
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Return the pointer coordinates relative to the root window's origin.
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.\" $Header: w.a,v 1.2 88/05/07 11:35:31 mento Exp $
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.IP \fIw\fP 1i
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Specifies the window.
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.\" $Header: winxy.a,v 1.2 88/08/17 09:04:07 mento Exp $
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.IP \fIwin_x_return\fP 1i
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.br
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.ns
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.IP \fIwin_y_return\fP 1i
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Return the pointer coordinates relative to the specified window.
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.SH DESCRIPTION
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.\" $Header: XQueryPntr.d,v 1.2 88/06/11 07:52:42 mento Exp $
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The
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.ZN XQueryPointer
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function returns the root window the pointer is logically on and the pointer
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coordinates relative to the root window's origin.
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If
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.ZN XQueryPointer
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returns
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.ZN False ,
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the pointer is not on the same screen as the specified window, and
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.ZN XQueryPointer
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returns
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.ZN None
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to child_return and zero to win_x_return and win_y_return.
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If
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.ZN XQueryPointer
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returns
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.ZN True ,
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the pointer coordinates returned to win_x_return and win_y_return
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are relative to the origin of the specified window.
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In this case,
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.ZN XQueryPointer
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returns the child that contains the pointer, if any,
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or else
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.ZN None
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to child_return.
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.LP
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.ZN XQueryPointer
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returns the current logical state of the keyboard buttons
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and the modifier keys in mask_return.
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It sets mask_return to the bitwise inclusive OR of one or more
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of the button or modifier key bitmasks to match
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the current state of the mouse buttons and the modifier keys.
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.LP
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.ZN XQueryPointer
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can generate a
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.ZN BadWindow
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error.
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.SH DIAGNOSTICS
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.\" $Header: badwindow.e,v 1.1 87/09/04 08:23:20 mento Exp $
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.TP 1i
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.ZN BadWindow
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A value for a Window argument does not name a defined Window.
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.SH "SEE ALSO"
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XGetWindowAttributes(3X11),
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XQueryTree(3X11)
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.br
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\fI\*(xL\fP
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