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X11R7.4 - man page for xtestdiscard (x11r4 section 3)

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XTEST(3)				     libXtst					 XTEST(3)

NAME
       XTestQueryExtension, XTestCompareCursorWithWindow, XTestCompareCurrentCursorWithWindow,
       XTestFakeKeyEvent, XTestFakeButtonEvent, XTestFakeMotionEvent,
       XTestFakeRelativeMotionEvent, XTestGrabControl, XTestSetGContextOfGC,
       XTestSetVisualIDOfVisual, XTestDiscard - XTest extension functions

SYNOPSIS
	cc [ flag ... ] file ... -lXtst  [ library ... ]

	#include <X11/extensions/XTest.h>

       Bool XTestQueryExtension(display, event_base, error_base, major_version, minor_version);

	Display *display;
	int *event_base;
	int *error_base;
	int *major_version;
	int *minor_version;

       Bool XTestCompareCursorWithWindow(display, window, cursor);

	Display *display;
	Window window;
	Cursor cursor;

       Bool XTestCompareCurrentCursorWithWindow(display, window);

	Display *display;
	Window window;

       int XTestFakeKeyEvent(display, keycode, is_press, delay);

	Display *display;
	unsigned int keycode;
	Bool is_press;
	unsigned long delay;

       int XTestFakeButtonEvent(display, button, is_press, delay);

	Display *display;
	unsigned int button;
	Bool is_press;
	unsigned long delay;

       int XTestFakeMotionEvent(display, screen_number, x, y, delay);

	Display *display;
	int screen_number;
	int x, y;
	unsigned long delay;

       int XTestFakeRelativeMotionEvent(display, screen_number, x, y, delay);

	Display *display;
	int screen_number;
	int x, y;
	unsigned long delay;

       int XTestGrabControl(display, impervious);

	Display *display;
	Bool impervious;

       void XTestSetGContextOfGC(gc, gid);

	GC gc;
	GContext gid;

       void XTestSetVisualIDOfVisual(visual, visualid);

	Visual *visual;
	VisualID visualid;

       Status XTestDiscard(display);

	Display *display;

DESCRIPTION
       This extension is a minimal set of client and server extensions required to completely
       test the X11 server with no user intervention. This extension is not intended to support
       general journaling and playback of user actions.

       The functions provided by this extension fall into two groups:

       Client Operations
	      These routines manipulate otherwise hidden client-side behavior. The actual
	      implementation will depend on the details of the actual language binding and what
	      degree of request buffering, GContext caching, and so on, is provided. In the C
	      binding, routines are provided to access the internals of two opaque data
	      structures -- GCs and Visuals -- and to discard any requests pending within the
	      output buffer of a connection. The exact details can be expected to differ for
	      other language bindings.

       Server Requests
	      The first of these requests is similar to that provided in most extensions: it
	      allows a client to specify a major and minor version number to the server and for
	      the server to respond with major and minor versions of its own. The remaining two
	      requests allow the following:

	      o  Access to an otherwise write-only server resource: the cursor associated with a
		 given window

	      o  Perhaps most importantly, limited synthesis of input device events, almost as if
		 a cooperative user had moved the pointing device or pressed a key or button.

       All XTEST extension functions and procedures, and all manifest constants and macros, will
       start with the string XTest. All operations are classified as server/client (Server) or
       client-only (Client).

       XTestQueryExtension returns True if the specified display supports the XTEST extension,
       else False. If the extension is supported, *event_base would be set to the event number
       for the first event for this extension and *error_base would be set to the error number
       for the first error for this extension. As no errors or events are defined for this
       version of the extension, the values returned here are not defined (nor useful). If the
       extension is supported, *major_version and *minor_version are set to the major and minor
       version numbers of the extension supported by the display. Otherwise, none of the
       arguments are set.

       If the extension is supported, XTestCompareCursorWithWindow performs a comparison of the
       cursor whose ID is specified by cursor (which may be None) with the cursor of the window
       specified by window returning True if they are the same and False otherwise. If the
       extension is not supported, then the request is ignored and zero is returned.

       If the extension is supported, XTestCompareCurrentCursorWithWindow performs a comparison
       of the current cursor with the cursor of the specified window returning True if they are
       the same and False otherwise. If the extension is not supported, then the request is
       ignored and zero is returned.

       If the extension is supported, XTestFakeKeyEvent requests the server to simulate either a
       KeyPress (if is_press is True) or a KeyRelease (if is_press is False) of the key with the
       specified keycode; otherwise, the request is ignored.

       If the extension is supported, the simulated event will not be processed until delay
       milliseconds after the request is received (if delay is CurrentTime, then this is
       interpreted as no delay at all). No other requests from this client will be processed
       until this delay, if any, has expired and subsequent processing of the simulated event has
       been completed.

       If the extension is supported, XTestFakeButtonEvent requests the server to simulate either
       a ButtonPress (if is_press is True) or a ButtonRelease (if is_press is False) of the
       logical button numbered by the specified button; otherwise, the request is ignored.

       If the extension is supported, the simulated event will not be processed until delay
       milliseconds after the request is received (if delay is CurrentTime, then this is
       interpreted as no delay at all). No other requests from this client will be processed
       until this delay, if any, has expired and subsequent processing of the simulated event has
       been completed.

       If the extension is supported, XTestFakeMotionEvent requests the server to simulate a
       movement of the pointer to the specified position (x, y) on the root window of
       screen_number; otherwise, the request is ignored. If screen_number is -1, the current
       screen (that the pointer is on) is used.

       If the extension is supported, the simulated event will not be processed until delay
       milliseconds after the request is received (if delay is CurrentTime, then this is
       interpreted as no delay at all). No other requests from this client will be processed
       until this delay, if any, has expired and subsequent processing of the simulated event has
       been completed.

       If the extension is supported, XTestFakeRelativeMotionEvent requests the server to
       simulate a movement of the pointer by the specified offsets (x, y) relative to the current
       pointer position on screen_number; otherwise, the request is ignored. If screen_number is
       -1, the current screen (that the pointer is on) is used.

       If the extension is supported, the simulated event will not be processed until delay
       milliseconds after the request is received (if delay is CurrentTime, then this is
       interpreted as no delay at all). No other requests from this client will be processed
       until this delay, if any, has expired and subsequent processing of the simulated event has
       been completed.

       If impervious is True, then the executing client becomes impervious to server grabs. If
       impervious is False, then the executing client returns to the normal state of being
       susceptible to server grabs.

       XTestSetGContextOfGC sets the GContext within the opaque datatype referenced by gc to be
       that specified by gid.

       XTestSetVisualIDOfVisual sets the VisualID within the opaque datatype referenced by visual
       to be that specified by visualid.

       XTestDiscard discards any requests within the output buffer for the specified display. It
       returns True if any requests were discarded; otherwise, it returns False.

RETURN VALUES
       All routines that have return type Status will return nonzero for success and zero for
       failure. Even if the XTEST extension is supported, the server may withdraw such facilities
       arbitrarily; in which case they will subsequently return zero.

AUTHOR
       Kieron Drake.

					   6 June 2007					 XTEST(3)
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