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