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2013-12-22 07:12:46 +08:00
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2002-10-13 11:35:53 +08:00
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****************************************************************************
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2013-12-22 07:12:46 +08:00
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* @Id: curs_mouse.3x,v 1.39 2013/06/22 18:09:42 tom Exp @
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-->
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<HTML>
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<HEAD>
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<TITLE>curs_mouse 3x</TITLE>
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<link rev=made href="mailto:bug-ncurses@gnu.org">
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<meta http-equiv="Content-Type" content="text/html; charset=iso-8859-1">
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</HEAD>
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<BODY>
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2002-10-13 11:35:53 +08:00
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<H1>curs_mouse 3x</H1>
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<HR>
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<PRE>
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<!-- Manpage converted by man2html 3.0.1 -->
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2005-10-10 02:41:57 +08:00
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<STRONG><A HREF="curs_mouse.3x.html">curs_mouse(3x)</A></STRONG> <STRONG><A HREF="curs_mouse.3x.html">curs_mouse(3x)</A></STRONG>
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2004-02-09 10:15:26 +08:00
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2000-07-09 10:46:08 +08:00
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</PRE>
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<H2>NAME</H2><PRE>
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2010-01-10 09:50:23 +08:00
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<STRONG>has_mouse</STRONG>, <STRONG>getmouse</STRONG>, <STRONG>ungetmouse</STRONG>, <STRONG>mousemask</STRONG>, <STRONG>wenclose</STRONG>,
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<STRONG>mouse_trafo</STRONG>, <STRONG>wmouse_trafo</STRONG>, <STRONG>mouseinterval</STRONG> - mouse interface
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through curses
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</PRE>
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<H2>SYNOPSIS</H2><PRE>
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<STRONG>#include</STRONG> <STRONG><curses.h></STRONG>
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<STRONG>typedef</STRONG> <STRONG>unsigned</STRONG> <STRONG>long</STRONG> <STRONG>mmask_t;</STRONG>
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<STRONG>typedef</STRONG> <STRONG>struct</STRONG> <STRONG>{</STRONG>
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<STRONG>short</STRONG> <STRONG>id;</STRONG> <EM>/*</EM> <EM>ID</EM> <EM>to</EM> <EM>distinguish</EM> <EM>multiple</EM> <EM>devices</EM> <EM>*/</EM>
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<STRONG>int</STRONG> <STRONG>x,</STRONG> <STRONG>y,</STRONG> <STRONG>z;</STRONG> <EM>/*</EM> <EM>event</EM> <EM>coordinates</EM> <EM>*/</EM>
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<STRONG>mmask_t</STRONG> <STRONG>bstate;</STRONG> <EM>/*</EM> <EM>button</EM> <EM>state</EM> <EM>bits</EM> <EM>*/</EM>
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<STRONG>}</STRONG> <STRONG>MEVENT;</STRONG>
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<STRONG>bool</STRONG> <STRONG>has_mouse(void);</STRONG>
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<STRONG>int</STRONG> <STRONG>getmouse(MEVENT</STRONG> <STRONG>*event);</STRONG>
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<STRONG>int</STRONG> <STRONG>ungetmouse(MEVENT</STRONG> <STRONG>*event);</STRONG>
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<STRONG>mmask_t</STRONG> <STRONG>mousemask(mmask_t</STRONG> <STRONG>newmask,</STRONG> <STRONG>mmask_t</STRONG> <STRONG>*oldmask);</STRONG>
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<STRONG>bool</STRONG> <STRONG>wenclose(const</STRONG> <STRONG>WINDOW</STRONG> <STRONG>*win,</STRONG> <STRONG>int</STRONG> <STRONG>y,</STRONG> <STRONG>int</STRONG> <STRONG>x);</STRONG>
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<STRONG>bool</STRONG> <STRONG>mouse_trafo(int*</STRONG> <STRONG>pY,</STRONG> <STRONG>int*</STRONG> <STRONG>pX,</STRONG> <STRONG>bool</STRONG> <STRONG>to_screen);</STRONG>
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<STRONG>bool</STRONG> <STRONG>wmouse_trafo(const</STRONG> <STRONG>WINDOW*</STRONG> <STRONG>win,</STRONG> <STRONG>int*</STRONG> <STRONG>pY,</STRONG> <STRONG>int*</STRONG> <STRONG>pX,</STRONG>
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<STRONG>bool</STRONG> <STRONG>to_screen);</STRONG>
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<STRONG>int</STRONG> <STRONG>mouseinterval(int</STRONG> <STRONG>erval);</STRONG>
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</PRE>
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<H2>DESCRIPTION</H2><PRE>
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These functions provide an interface to mouse events from
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<STRONG><A HREF="ncurses.3x.html">ncurses(3x)</A></STRONG>. Mouse events are represented by <STRONG>KEY_MOUSE</STRONG>
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pseudo-key values in the <STRONG>wgetch</STRONG> input stream.
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To make mouse events visible, use the <STRONG>mousemask</STRONG> function.
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This will set the mouse events to be reported. By de-
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fault, no mouse events are reported. The function will
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return a mask to indicate which of the specified mouse
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events can be reported; on complete failure it returns 0.
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If oldmask is non-NULL, this function fills the indicated
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location with the previous value of the given window's
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mouse event mask.
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As a side effect, setting a zero mousemask may turn off
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the mouse pointer; setting a nonzero mask may turn it on.
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Whether this happens is device-dependent.
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Here are the mouse event type masks which may be defined:
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<EM>Name</EM> <EM>Description</EM>
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---------------------------------------------------------------------
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BUTTON1_PRESSED mouse button 1 down
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BUTTON1_RELEASED mouse button 1 up
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BUTTON1_CLICKED mouse button 1 clicked
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BUTTON1_DOUBLE_CLICKED mouse button 1 double clicked
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BUTTON1_TRIPLE_CLICKED mouse button 1 triple clicked
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---------------------------------------------------------------------
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BUTTON2_PRESSED mouse button 2 down
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BUTTON2_RELEASED mouse button 2 up
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BUTTON2_CLICKED mouse button 2 clicked
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BUTTON2_DOUBLE_CLICKED mouse button 2 double clicked
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BUTTON2_TRIPLE_CLICKED mouse button 2 triple clicked
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---------------------------------------------------------------------
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BUTTON3_PRESSED mouse button 3 down
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BUTTON3_RELEASED mouse button 3 up
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BUTTON3_CLICKED mouse button 3 clicked
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BUTTON3_DOUBLE_CLICKED mouse button 3 double clicked
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BUTTON3_TRIPLE_CLICKED mouse button 3 triple clicked
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---------------------------------------------------------------------
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BUTTON4_PRESSED mouse button 4 down
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BUTTON4_RELEASED mouse button 4 up
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BUTTON4_CLICKED mouse button 4 clicked
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BUTTON4_DOUBLE_CLICKED mouse button 4 double clicked
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BUTTON4_TRIPLE_CLICKED mouse button 4 triple clicked
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---------------------------------------------------------------------
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BUTTON5_PRESSED mouse button 5 down
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BUTTON5_RELEASED mouse button 5 up
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BUTTON5_CLICKED mouse button 5 clicked
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BUTTON5_DOUBLE_CLICKED mouse button 5 double clicked
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BUTTON5_TRIPLE_CLICKED mouse button 5 triple clicked
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---------------------------------------------------------------------
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BUTTON_SHIFT shift was down during button state change
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BUTTON_CTRL control was down during button state change
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BUTTON_ALT alt was down during button state change
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ALL_MOUSE_EVENTS report all button state changes
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REPORT_MOUSE_POSITION report mouse movement
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---------------------------------------------------------------------
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Once a class of mouse events have been made visible in a
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window, calling the <STRONG>wgetch</STRONG> function on that window may re-
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turn <STRONG>KEY_MOUSE</STRONG> as an indicator that a mouse event has been
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queued. To read the event data and pop the event off the
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queue, call <STRONG>getmouse</STRONG>. This function will return <STRONG>OK</STRONG> if a
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mouse event is actually visible in the given window, <STRONG>ERR</STRONG>
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otherwise. When <STRONG>getmouse</STRONG> returns <STRONG>OK</STRONG>, the data deposited
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as y and x in the event structure coordinates will be
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screen-relative character-cell coordinates. The returned
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state mask will have exactly one bit set to indicate the
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event type. The corresponding data in the queue is marked
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invalid. A subsequent call to <STRONG>getmouse</STRONG> will retrieve the
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next older item from the queue.
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The <STRONG>ungetmouse</STRONG> function behaves analogously to <STRONG>ungetch</STRONG>.
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It pushes a <STRONG>KEY_MOUSE</STRONG> event onto the input queue, and as-
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sociates with that event the given state data and screen-
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relative character-cell coordinates.
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The <STRONG>wenclose</STRONG> function tests whether a given pair of
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screen-relative character-cell coordinates is enclosed by
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a given window, returning TRUE if it is and FALSE other-
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wise. It is useful for determining what subset of the
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screen windows enclose the location of a mouse event.
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The <STRONG>wmouse_trafo</STRONG> function transforms a given pair of coor-
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2007-03-04 08:18:45 +08:00
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dinates from stdscr-relative coordinates to coordinates
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relative to the given window or vice versa. Please remem-
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ber, that stdscr-relative coordinates are not always iden-
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tical to window-relative coordinates due to the mechanism
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to reserve lines on top or bottom of the screen for other
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purposes (see the <STRONG>ripoffline()</STRONG> and <STRONG>slk_init</STRONG> calls, for ex-
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ample). If the parameter <STRONG>to_screen</STRONG> is <STRONG>TRUE</STRONG>, the pointers
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<STRONG>pY,</STRONG> <STRONG>pX</STRONG> must reference the coordinates of a location inside
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the window <STRONG>win</STRONG>. They are converted to window-relative co-
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ordinates and returned through the pointers. If the con-
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version was successful, the function returns <STRONG>TRUE</STRONG>. If one
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of the parameters was NULL or the location is not inside
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the window, <STRONG>FALSE</STRONG> is returned. If <STRONG>to_screen</STRONG> is <STRONG>FALSE</STRONG>, the
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pointers <STRONG>pY,</STRONG> <STRONG>pX</STRONG> must reference window-relative coordi-
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nates. They are converted to stdscr-relative coordinates
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if the window <STRONG>win</STRONG> encloses this point. In this case the
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function returns <STRONG>TRUE</STRONG>. If one of the parameters is NULL
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or the point is not inside the window, <STRONG>FALSE</STRONG> is returned.
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Please notice, that the referenced coordinates are only
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replaced by the converted coordinates if the transforma-
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tion was successful.
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The <STRONG>mouse_trafo</STRONG> function performs the same translation as
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<STRONG>wmouse_trafo</STRONG>, using stdscr for <STRONG>win</STRONG>.
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The <STRONG>mouseinterval</STRONG> function sets the maximum time (in thou-
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sands of a second) that can elapse between press and re-
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lease events for them to be recognized as a click. Use
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<STRONG>mouseinterval(0)</STRONG> to disable click resolution. This func-
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tion returns the previous interval value. Use <STRONG>mouseinter-</STRONG>
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<STRONG>val(-1)</STRONG> to obtain the interval without altering it. The
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default is one sixth of a second.
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The <STRONG>has_mouse</STRONG> function returns TRUE if the mouse driver
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has been successfully initialized.
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Note that mouse events will be ignored when input is in
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cooked mode, and will cause an error beep when cooked mode
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is being simulated in a window by a function such as <STRONG>get-</STRONG>
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<STRONG>str</STRONG> that expects a linefeed for input-loop termination.
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</PRE>
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<H2>RETURN VALUE</H2><PRE>
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<STRONG>getmouse</STRONG> and <STRONG>ungetmouse</STRONG> return the integer <STRONG>ERR</STRONG> upon fail-
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ure or <STRONG>OK</STRONG> upon successful completion.
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<STRONG>getmouse</STRONG>
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returns an error. If no mouse driver was ini-
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tialized, or if the mask parameter is zero, it
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also returns an error if no more events remain
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in the queue.
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<STRONG>ungetmouse</STRONG>
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returns an error if the FIFO is full.
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<STRONG>mousemask</STRONG> returns the mask of reportable events.
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<STRONG>mouseinterval</STRONG> returns the previous interval value, unless
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the terminal was not initialized. In that case, it re-
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turns the maximum interval value (166).
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<STRONG>wenclose</STRONG> and <STRONG>wmouse_trafo</STRONG> are boolean functions returning
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<STRONG>TRUE</STRONG> or <STRONG>FALSE</STRONG> depending on their test result.
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</PRE>
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<H2>PORTABILITY</H2><PRE>
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2010-01-10 09:50:23 +08:00
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These calls were designed for <STRONG><A HREF="ncurses.3x.html">ncurses(3x)</A></STRONG>, and are not
|
2000-07-09 10:46:08 +08:00
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found in SVr4 curses, 4.4BSD curses, or any other previous
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version of curses.
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2002-10-13 11:35:53 +08:00
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The feature macro <STRONG>NCURSES_MOUSE_VERSION</STRONG> is provided so the
|
2010-01-10 09:50:23 +08:00
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preprocessor can be used to test whether these features
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are present. If the interface is changed, the value of
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<STRONG>NCURSES_MOUSE_VERSION</STRONG> will be incremented. These values
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for <STRONG>NCURSES_MOUSE_VERSION</STRONG> may be specified when configur-
|
2005-10-10 02:41:57 +08:00
|
|
|
ing ncurses:
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2010-01-10 09:50:23 +08:00
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1 has definitions for reserved events. The mask
|
2005-10-10 02:41:57 +08:00
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uses 28 bits.
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2 adds definitions for button 5, removes the defi-
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2010-01-10 09:50:23 +08:00
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nitions for reserved events. The mask uses 29
|
2005-10-10 02:41:57 +08:00
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bits.
|
2000-07-09 10:46:08 +08:00
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|
2010-01-10 09:50:23 +08:00
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The order of the <STRONG>MEVENT</STRONG> structure members is not guaran-
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teed. Additional fields may be added to the structure in
|
2000-07-09 10:46:08 +08:00
|
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the future.
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|
2010-01-10 09:50:23 +08:00
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Under <STRONG><A HREF="ncurses.3x.html">ncurses(3x)</A></STRONG>, these calls are implemented using ei-
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ther xterm's built-in mouse-tracking API or platform-spe-
|
2005-10-10 02:41:57 +08:00
|
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cific drivers including
|
2010-01-10 09:50:23 +08:00
|
|
|
Alessandro Rubini's gpm server
|
2004-02-09 10:15:26 +08:00
|
|
|
FreeBSD sysmouse
|
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|
OS/2 EMX
|
2010-01-10 09:50:23 +08:00
|
|
|
If you are using an unsupported configuration, mouse
|
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|
events will not be visible to <STRONG><A HREF="ncurses.3x.html">ncurses(3x)</A></STRONG> (and the <STRONG>mouse-</STRONG>
|
2004-02-09 10:15:26 +08:00
|
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<STRONG>mask</STRONG> function will always return <STRONG>0</STRONG>).
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|
2010-01-10 09:50:23 +08:00
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If the terminfo entry contains a <STRONG>XM</STRONG> string, this is used
|
|
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|
|
in the xterm mouse driver to control the way the terminal
|
2004-02-09 10:15:26 +08:00
|
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|
is initialized for mouse operation. The default, if <STRONG>XM</STRONG> is
|
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|
not found, corresponds to private mode 1000 of xterm:
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|
|
\E[?1000%?%p1%{1}%=%th%el%;
|
2000-07-09 10:46:08 +08:00
|
|
|
The z member in the event structure is not presently used.
|
2010-01-10 09:50:23 +08:00
|
|
|
It is intended for use with touch screens (which may be
|
2000-07-09 10:46:08 +08:00
|
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|
pressure-sensitive) or with 3D-mice/trackballs/power
|
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|
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gloves.
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</PRE>
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|
<H2>BUGS</H2><PRE>
|
2010-01-10 09:50:23 +08:00
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|
Mouse events under xterm will not in fact be ignored dur-
|
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|
ing cooked mode, if they have been enabled by <STRONG>mousemask</STRONG>.
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|
Instead, the xterm mouse report sequence will appear in
|
2000-07-09 10:46:08 +08:00
|
|
|
the string read.
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|
Mouse events under xterm will not be detected correctly in
|
2010-01-10 09:50:23 +08:00
|
|
|
a window with its keypad bit off, since they are inter-
|
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|
preted as a variety of function key. Your terminfo de-
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|
scription should have <STRONG>kmous</STRONG> set to "\E[M" (the beginning
|
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|
|
of the response from xterm for mouse clicks). Other val-
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|
ues for <STRONG>kmous</STRONG> are permitted, but under the same assump-
|
2007-03-04 08:18:45 +08:00
|
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|
tion, i.e., it is the beginning of the response.
|
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|
|
2010-01-10 09:50:23 +08:00
|
|
|
Because there are no standard terminal responses that
|
|
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|
|
would serve to identify terminals which support the xterm
|
|
|
|
|
mouse protocol, <STRONG>ncurses</STRONG> assumes that if your $TERM envi-
|
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|
|
ronment variable contains "xterm", or <STRONG>kmous</STRONG> is defined in
|
2002-10-13 11:35:53 +08:00
|
|
|
the terminal description, then the terminal may send mouse
|
2000-07-09 10:46:08 +08:00
|
|
|
events.
|
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|
|
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|
</PRE>
|
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|
|
<H2>SEE ALSO</H2><PRE>
|
2010-10-03 08:50:21 +08:00
|
|
|
<STRONG><A HREF="ncurses.3x.html">curses(3x)</A></STRONG>, <STRONG><A HREF="curs_kernel.3x.html">curs_kernel(3x)</A></STRONG>, <STRONG><A HREF="curs_slk.3x.html">curs_slk(3x)</A></STRONG>, <STRONG>curs_vari-</STRONG>
|
|
|
|
|
<STRONG><A HREF="curs_variables.3x.html">ables(3x)</A></STRONG>.
|
2000-07-09 10:46:08 +08:00
|
|
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|
|
|
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|
|
|
|
2005-10-10 02:41:57 +08:00
|
|
|
<STRONG><A HREF="curs_mouse.3x.html">curs_mouse(3x)</A></STRONG>
|
2000-07-09 10:46:08 +08:00
|
|
|
</PRE>
|
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<ADDRESS>
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Man(1) output converted with
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