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Hello,<br>
<br>
I presume you are not using scilab 5.5.0, change the function as
follows :<br>
<br>
function key=waitforkeypress()<br>
global _keypress<br>
set(gcf(),'event_handler','handler');<br>
set(gcf(),'event_handler_enable','on')<br>
_keypress=0;<br>
while ~_keypress<br>
sleep(1)<br>
end<br>
set(gcf(),'event_handler_enable','off')<br>
key=_keypress;<br>
endfunction<br>
<br>
Le 13/08/2014 14:12, Jens a écrit :<br>
</div>
<blockquote cite="mid:53EB561A.20306@hslmg.de" type="cite">
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<div class="moz-cite-prefix">This is small example's output:<br>
!--error 77 <br>
set: falsche Nummer von Eingangsargument(en): 2 nach 3 erwartet.<br>
at line 3 of function waitforkeypress called by : <br>
select waitforkeypress()<br>
at line 369 of exec file called by : [last line og
script]<br>
exec('G:\Daten\ScilabFun\functionCheck.sce', -1)<br>
<br>
Jens<br>
-----------------------------------------------------------------------------------------------------------<br>
<br>
<br>
Am 13.08.2014 13:41, schrieb mottelet [via Scilab / Xcos -
Mailing Lists Archives]:<br>
</div>
<blockquote style="border-left:2px solid #CCCCCC;padding:0 1em"
cite="mid:20140813133946.Horde.RQL3UGFLYN6_5rnwvgA0xw1@webmail2.utc.fr"
type="cite">
<meta http-equiv="content-type" content="text/html;
charset=ISO-8859-1">
<title></title>
<p>Would this small example fit your needs ?<br>
<br>
function handler(win,x,y,ibut)<br>
global _keypress<br>
if or(ibut==(37:40))<br>
_keypress=ibut;<br>
end<br>
endfunction<br>
<br>
function key=waitforkeypress()<br>
global _keypress<br>
set(gcf(),'event_handler','handler','event_handler_enable','on')<br>
_keypress=0;<br>
while ~_keypress<br>
sleep(1)<br>
end<br>
set(gcf(),'event_handler_enable','off')<br>
key=_keypress;<br>
endfunction<br>
<br>
while 1<br>
select waitforkeypress()<br>
case 37<br>
disp('left')<br>
case 38<br>
disp('up')<br>
case 39<br>
disp('right')<br>
case 40<br>
disp('down') <br>
break<br>
end<br>
end<br>
<br>
S.<br>
<br>
Jens <<a moz-do-not-send="true"
href="/user/SendEmail.jtp?type=node&node=4031032&i=0"
target="_top" rel="nofollow" link="external">[hidden email]</a>>
a écrit :</p>
<blockquote style="border-left:2px solid #CCCCCC;padding:0 1em"
type="cite">
<div class="moz-cite-prefix">Hello,<br>
My event_handler experiments with the Scilab help example in
"Event handler functions" (see below) led to nothing. I can
see the "event" at the bottom of the graphic window but I
cannot arrest it in a variable. I tried this:<br>
<br>
<div class="refsection">
<div class="programlisting">
<table border="0" width="100%">
<tbody>
<tr>
<td width="98%">
<pre class="scilabcode"><span class="scilabfkeyword">function</span> <span class="scilabfunctionid">my_eventhandler</span><span class="scilabopenclose">(</span><span class="scilabinputoutputargs">win</span><span class="scilabdefault">, </span><span class="scilabinputoutputargs">x</span><span class="scilabdefault">, </span><span class="scilabinputoutputargs">y</span><span class="scilabdefault">, </span><span class="scilabinputoutputargs">ibut</span><span class="scilabopenclose">)</span>
<span class="scilabskeyword">if</span> <span class="scilabinputoutputargs">ibut</span><span class="scilaboperator">==-</span><span class="scilabnumber">1000</span> <span class="scilabskeyword">then</span> <span class="scilabckeyword">return</span><span class="scilabdefault">,</span><span class="scilabskeyword">end</span>
<span class="scilabopenclose">[</span><span class="scilabinputoutputargs">x</span><span class="scilabdefault">,</span><span class="scilabinputoutputargs">y</span><span class="scilabopenclose">]</span><span class="scilaboperator">=</span><a moz-do-not-send="true" class="scilabcommand" href="xchange.html" link="external" rel="nofollow" target="_top">xchange</a><span class="scilabopenclose">(</span><span class="scilabinputoutputargs">x</span><span class="scilabdefault">,</span><span class="scilabinputoutputargs">y</span><span class="scilabdefault">,</span><span class="scilabstring">'i2f'</span><span class="scilabopenclose">)</span>
<a moz-do-not-send="true" class="scilabmacro" href="xinfo.html" link="external" rel="nofollow" target="_top">xinfo</a><span class="scilabopenclose">(</span><a moz-do-not-send="true" class="scilabcommand" href="msprintf.html" link="external" rel="nofollow" target="_top">msprintf</a><span class="scilabopenclose">(</span><span class="scilabstring">'Event code %d at mouse position is (%f,%f)'</span><span class="scilabdefault">,</span><span class="scilabinputoutputargs">ibut</span><span class="scilabdefault">,</span><span class="scilabinputoutputargs">x</span><span class="scilabdefault">,</span><span class="scilabinputoutputargs">y</span><span class="scilabopenclose">))</span>
<span class="scilabfkeyword">endfunction</span>
<a moz-do-not-send="true" class="scilabcommand" href="plot2d.html" link="external" rel="nofollow" target="_top">plot2d</a><span class="scilabopenclose">()</span>
<span class="scilabid">fig</span> <span class="scilaboperator">=</span> <a moz-do-not-send="true" class="scilabmacro" href="gcf.html" link="external" rel="nofollow" target="_top">gcf</a><span class="scilabopenclose">()</span> <span class="scilabdefault">;</span>
<span class="scilabid">fig</span><span class="scilaboperator">.</span><span class="scilabfield">event_handler</span> <span class="scilaboperator">=</span> <span class="scilabstring">'my_eventhandler'</span> <span class="scilabdefault">;</span>
<span class="scilabid">fig</span><span class="scilaboperator">.</span><span class="scilabfield">event_handler_enable</span> <span class="scilaboperator">=</span> <span class="scilabstring">"on"</span> <span class="scilabdefault">;</span>
<span class="scilabcomment">//now:</span>
<span class="scilabcomment">// - move the mouse over the graphic window</span>
<span class="scilabcomment">// - press and release keys shifted or not with Ctrl pressed or not</span>
<span class="scilabcomment">// - press button, wait a little release</span>
<span class="scilabcomment">// - press and release button</span>
<span class="scilabcomment">// - double-click button</span>
<span class="scilabid">fig</span><span class="scilaboperator">.</span><span class="scilabfield">event_handler_enable</span> <span class="scilaboperator">=</span> <span class="scilabstring">"off"</span> <span class="scilabdefault">;</span> <span class="scilabcomment">//suppress the event handler</span>
</pre>
</td>
<td valign="top"><a
href="scilab://scilab.execexample/"></td>
<td valign="top"><a
href="scilab://scilab.editexample/"></td>
</tr>
</tbody>
</table>
</div>
</div>
<br>
I fear I must retire to <br>
<pre style="font-family:Courier New;font-style:normal;font-size:13.0;"><span style="color:rgb(0,0,0);">m</span><span style="color:rgb(92,92,92);">=</span><span style="color:rgb(174,92,176);text-decoration:underline;">evstr</span><span style="color:rgb(74,85,219);">(</span><span style="color:rgb(50,185,185);">x_dialog</span><span style="color:rgb(74,85,219);">(...)</span>
</pre>
Jens<br>
<br>
<br>
<br>
----------------------------------------------------------------------------<br>
<br>
Am 13.08.2014 11:12, schrieb mottelet [via Scilab / Xcos -
Mailing Lists Archives]:</div>
<blockquote style="border-left:2px solid #CCCCCC;padding:0
1em"
cite="mid:20140813111024.Horde.Hc-sr4Z-24Ie7jJkRN_21g1@webmail2.utc.fr"
type="cite">
<p>Hello,<br>
<br>
IMHO, the only way to trap a keypress and get the ascii
(?) code is to use the event_handler callback of a figure
:<br>
<br>
function handler(x,y,ibut)<br>
//<br>
endfunction<br>
<br>
f=gcf();<br>
f.event_handler='handler';<br>
f.event_handle_enable='on';<br>
<br>
On my computer, I have the following mapping <br>
<br>
left arrow pressed : ibut=37 (released=-37)<br>
up arrow : 38<br>
right arrow 39<br>
down arrow 40<br>
<br>
The problem is that you need to have a figure opened, and
that this figure must have the focus.<br>
<br>
S.</p>
<p>Jens <<a
href="/user/SendEmail.jtp?type=node&node=4031030&i=0"
link="external" moz-do-not-send="true" rel="nofollow"
target="_top">[hidden email]</a>> a écrit :</p>
<blockquote style="border-left:2px solid #CCCCCC;padding:0
1em" type="cite">
<p>Hi Samuel,<br>
ASCII representation of up, down etc. would help me if I
knew a Scilab<br>
command which puts the ascii value into a variable.
input() is definitely<br>
unable to do so.<br>
<br>
Jens<br>
<br>
<br>
<br>
<br>
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