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Index › Programming Questions & Help › Syntax Questions › external keyboard

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external keyboard (Read 588 times)

leanderlike

external keyboard
Jul 9^th, 2009, 12:31pm

i've pluged in an external keyboard to my laptop. when opening my processing sketch and typing with my laptop keyboard everythings works fine. when using my external keyboard the sketch does not work.....the numbers are not displayed correctly instead there are shown fragments....
this is the sketch i use:

Code:

PFont font;
int i;
void setup() {
 size (1000,1000);
 font = createFont ("Lucida Sans Typewriter",50);
  textFont (font);
}
  void draw(){}
  
  void keyReleased() {
    i+=50;
   text(key,i,100); 
    
  }

thats what the code looks like when using the laptop keyboard (first three numbers) and the external keyboard (the last three numbers)
http://www.pic-upload.de/view-2521743/Bild-5.png.html

does anyone has an idea what the problem might be?
when using the external keyboard inside the web browser or microsoft word it works perfectly well. just inside processing it struggles.
i also tried a different font....

blindfish

Re: external keyboard
Reply #1 - Jul 9^th, 2009, 1:21pm

No problems here and I'm using a USB keyboard connected to my laptop. If I've understood correctly each time you press a number on your external keyboard you get get "[]1[]"?

I might hazard a guess that to enter a number for some reason it's switching NumLock on and off. Try adding:

if (key == CODED) {
println(keyCode);
}

to your keyReleased code - that will give you the code of the extra characters being submitted. You might just have to add a condition to exclude them when using your keyboard.

Where is the what if the what is in why?

leanderlike Junior Member Offline Posts: 91	Re: external keyboard Reply #2 - Jul 9^th, 2009, 2:45pm it becomes even more strange...when using if (key == coded) etc. and using it with my laptop keyboard it does not print out anything. using my external number pad i only get printed out "12" no matter what i type in........

leanderlike

Re: external keyboard
Reply #3 - Jul 9^th, 2009, 9:06pm

ok i know what went wrong.
each time i press a key it sets first the keyCode 144 then e.g. 12 and then again 144.
now, when using my keyboard i have this function:

function keyTyping () {
text (key, PosY,PosY);
}

You might just have to add a condition to exclude them when using your keyboard.
so how can i exclude the 144-keyCode character without deleting the others key presses?
note: i just use a number pad, that makes it even more strange....
so when typing a "1" i get the keyCode 49. now when using my external keyboard i get "144""49"144". is there a skip function or something that can ignore the 144 and only hint for the other keyCodes???

hope you can help me, this would be great!!!

blindfish

Re: external keyboard
Reply #4 - Jul 10^th, 2009, 12:17am

Well sounds like my hunch was correct - 144 is what I get from numLock on my external keyboard too. Why it has to invoke it each time you press a number I don't know, though I'm guessing it's a German keyboard which may have to handle extra characters and this is how they've dealt with it.

As for the condition... Can't you just:

function keyTyping () {
if(keyCode !=144){
text (key, PosY,PosY);
}
}

Where is the what if the what is in why?

leanderlike

Re: external keyboard
Reply #5 - Jul 10^th, 2009, 1:06am

i thought so too.but it does not change anything.
when using this code with my external keybooard and printing out the keyCode it still prints out "144" the pressed nummber and again "144".
indeed it's a german keyboard. but it worked once and now i can't get it running again. still the same mistake....
any other idea how to get rid of this??? i thought of an external programm to deactivate the numlock key....does not work either

blindfish

Re: external keyboard
Reply #6 - Jul 10^th, 2009, 1:24am

Actually that kind of makes sense since it's a keyReleased function - presumably all three characters are passed in unison on keyReleased. In which case I guess you may have to parse it somehow; though TBH it seems to me that this is a problem with the setup of your keyboard so you would be fixing it for a very tiny minority of users. Maybe you just need to re-install the drivers for the keyboard or change a setting somewhere?

Where is the what if the what is in why?

leanderlike Junior Member Offline Posts: 91	Re: external keyboard Reply #7 - Jul 10^th, 2009, 3:24am i got it PFont font; int i; void setup() { size (1000,1000); font = createFont ("Lucida Sans Typewriter",50); textFont (font); } void draw(){} void keyReleased() { if (keyCode != 144) { i+=50; text(key,i,100); } }

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