[Newbies] I am a total beginner with some questions
cboneg5 at gmail.com
Wed Apr 16 23:12:00 UTC 2008
I typed in the code for the key press and printed it and recieved an error.
this is a screen shot of this:
A second question. How do I make a method to continuously check for this key
press. If I have a morph class how do I create a method within it that says
"while this morph exists check for this key being pressed and do something
if it is pressed"?
> I appreciate the help. I tried it out and it works. I have one problem
> though. I created a method called "gdkDKeyDown" (gdk is my innitials so I
> put it before my methods) and when I type gdkDKeyDown in a workspace and
> print it it says nil (it's supposed to say true or false) how do I make it
> return a value?
> This is the method:
> | x |
> x := Sensor keyboardPeek asciiValue.
> x == 99
> ifTrue: [^ true].
> ^ false
> Marcus Strehlow wrote:
>> Hi there,
>> As mentioned before, your class would have to inherit the method
>> handleKeytroke:, keyStroke: and keyDown: inside which you then decide
>> should be done. However, in order to find out which key has been pressed,
>> you will have to find out the corresponding ASCII code, and then check if
>> the pressed ASCII code is the same as the one you want to monitor.
>> x := Sensor keyboardPeek asciiValue.
>> (x == 99) "99 is the ascii value for the letter c"
>> ifTrue: [Transcript show: 'letter c was pressed'; cr].
>> If this is implemented in the keyDown: method, everytime the c key is
>> pressed, the Transcript should show the text specified.
>> You can find the ASCII values for each key on www.asciitable.com . In the
>> image on the page, the ASCII value is the one in the Dec column.
>> Displaying an image is fairly easy, as long as Squeak supports the
>> Current supported formats are GIF, JPG, PNG and BMP if I remember
>> To use an image inside any morph or in the world, use this:
>> x := ImageMorph new.
>> x image: (Form fromFileNamed: 'path/to/your/image.jpg').
>> x openInWorld.
>> This will load the specified file, create the necessary form, and is then
>> opened in your current world.
>> I hope this helps a bit,
>>> Message: 1
>>> Date: Mon, 7 Apr 2008 14:44:32 -0700 (PDT)
>>> From: kennellgr <cboneg5 at gmail.com>
>>> Subject: [Newbies] I am a total beginner with some questions
>>> To: beginners at lists.squeakfoundation.org
>>> Message-ID: <16540965.post at talk.nabble.com>
>>> Content-Type: text/plain; charset=us-ascii
>>> I really like programming (I've done some in C) and I decided I wanted
>>> doing some programming on my Mac. I spent hours online trying to find
>>> something that I could learn and settled on Squeak. I have it and barely
>>> understand the basics of it.
>>> A few Questions:
>>> 1. What do I do to test whether or not a key has been pressed (in a
>>> want it to say 'if C key is pressed down do this')
>>> 2. What do I do to display a picture that I have on my computer?
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