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- <STRONG>getmouse</STRONG>, <STRONG>ungetmouse</STRONG>, <STRONG>mousemask</STRONG> - mouse interface through
- curses
-
-
-</PRE>
-<H2>SYNOPSIS</H2><PRE>
- <STRONG>#include</STRONG> <STRONG><curses.h></STRONG>
-
- <STRONG>typedef</STRONG> <STRONG>unsigned</STRONG> <STRONG>long</STRONG> <STRONG>mmask_t;</STRONG>
-
- <STRONG>typedef</STRONG> <STRONG>struct</STRONG>
- <STRONG>{</STRONG>
- <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>
- <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>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(WINDOW</STRONG> <STRONG>*win,</STRONG> <STRONG>int</STRONG> <STRONG>y,</STRONG> <STRONG>int</STRONG> <STRONG>x)</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
- <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 <STRONG>mousemask</STRONG> function.
- This will set the mouse events to be reported. By
- default, 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
- location with the previous value of the given window's
- mouse event mask.
-
- As a side effect, setting a zero mousemask may turn off
- the mouse pointer; setting a nonzero mask may turn it on.
- Whether this happens is device-dependent.
-
- Here are the mouse event type masks:
-
- l l _ _ l l. <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_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
- 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 <STRONG>wgetch</STRONG> function on that window may
- return <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.
-
- The <STRONG>ungetmouse</STRONG> function behaves analogously to <STRONG>ungetch</STRONG>.
- It pushes a <STRONG>KEY_MOUSE</STRONG> event onto the input queue, and
- associates with that event the given state data and
- screen-relative character-cell coordinates.
-
- 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 <STRONG>mouseinterval</STRONG> 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
- cooked mode, and will cause an error beep when cooked mode
- 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>
- All routines return the integer <STRONG>ERR</STRONG> upon failure or <STRONG>OK</STRONG>
- upon successful completion.
-
- 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 <STRONG>NCURSES_MOUSE_VERSION</STRONG> is provided so the
- preprocessor can be used to test whether these features
- are present (its value is 1). NOTE: THIS INTERFACE IS
- EXPERIMENTAL AND IS SUBJECT TO CHANGE WITHOUT NOTICE! If
- the interface is changed, the value of <STRONG>NCURSES_MOUSE_VER-</STRONG>
- <STRONG>SION</STRONG> will be incremented.
-
- 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 <STRONG><A HREF="ncurses.3x.html">ncurses(3X)</A></STRONG>, 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 there is no gpm daemon running on your machine,
- mouse events will not be visible to <STRONG><A HREF="ncurses.3x.html">ncurses(3X)</A></STRONG> (and the
- <STRONG>wmousemask</STRONG> function will always return <STRONG>0</STRONG>).
-
- 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
- gloves.
-
-
-</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 <STRONG>wmousemask</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.
-
-
-</PRE>
-<H2>SEE ALSO</H2><PRE>
- <STRONG><A HREF="ncurses.3x.html">curses(3X)</A></STRONG>.
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