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    On 6/12/2024 9:58 PM, Mark Volkmann via Cuis-dev wrote:
    <blockquote
cite="mid:CAFfRWnWE26g9PcqSi-LMpAcMC-NMMfkpw60kDs06CQDjwtvVFA@mail.gmail.com"
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      <div dir="ltr">I was looking for a way to detect if Cuis Smalltalk
        is in full screen mode. I see that the `DisplayScreen` class has
        this instance method for changing it:
        <div><br>
        </div>
        <div><font face="monospace">fullScreenMode: aBoolean<br>
                "On platforms that support it, set full-screen mode to
            the value of the argument. (Note: you'll need to restore the
            Display after calling this primitive."<br>
                "Display fullScreenMode: true. Display newDepth: Display
            depth"<br>
            <br>
                <primitive: 233><br>
                self primitiveFailed</font>
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            <div>This is the first time I've encountered the
              `<primitive: someNumber>` syntax.</div>
            <div>Where can I learn about what that does?</div>
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            <span class="gmail_signature_prefix">-- </span><br>
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                          <div><font face="arial, helvetica, sans-serif">R.
                              Mark Volkmann</font></div>
                          <div><span style="font-size: 12.8px;"><font
                                face="arial, helvetica, sans-serif">Object
                                Computing, Inc.</font></span></div>
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    <br>
    The BlueBook chapter 29 is about this. I'm pretty sure many other
    Smalltalk books will describe the VM interface too. Also this
    article from the August 1981 Byte magazine:
    <a class="moz-txt-link-freetext" href="https://archive.org/details/byte-magazine-1981-08/page/n313/mode/2up">https://archive.org/details/byte-magazine-1981-08/page/n313/mode/2up</a><br>
    <br>
    HTH,<br>
    <pre class="moz-signature" cols="72">-- 
Juan Vuletich
cuis.st
github.com/jvuletich
researchgate.net/profile/Juan-Vuletich
independent.academia.edu/JuanVuletich
patents.justia.com/inventor/juan-manuel-vuletich
linkedin.com/in/juan-vuletich-75611b3
twitter.com/JuanVuletich</pre>
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