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| <TITLE>curs_mouse 3x</TITLE> |
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| <H1>curs_mouse 3x</H1> |
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| <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> |
| <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> |
| <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>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 |
| <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 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 |
| 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 which may be defined: |
| |
| |
| <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 <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. |
| |
| 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 <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>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. |
| |
| 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> |
| <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, |
| |
| <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 <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. 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 <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 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 |
| 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>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 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, <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> |
| <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><A HREF="curs_mouse.3x.html">curs_mouse(3x)</A></STRONG> |
| </PRE> |
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