<html><head><meta http-equiv="Content-Type" content="text/html; charset=UTF-8" /></head><body style='font-size: 10pt; font-family: Verdana,Geneva,sans-serif'> <div class="pre" style="margin: 0; padding: 0; font-family: monospace">On 2024-08-12 16:53, Mark Volkmann wrote: <blockquote type="cite" style="padding: 0 0.4em; border-left: #1010ff 2px solid; margin: 0">The only reason I chose to make my PlaceholderMorph be a subclass of PlacedMorph instead of BoxedMorph is that with PlacedMorph the canvas passed to drawOn: is a VectorCanvas and with BoxedMorph the canvas passed to drawOn: is a HybridCanvas. I want to use the polyLine: method in VectorCanvas. Is there a way I can configure my custom morph so that if it is a subclass of BoxedMorph, I can get a VectorCanvas in drawTo: ?</blockquote> If you open a World Menu > Open > Message Names and type 'canvas', you might note #requiresVectorCanvas Good writers read a lot. :) <blockquote type="cite" style="padding: 0 0.4em; border-left: #1010ff 2px solid; margin: 0">Is it a better option to modify the layoutSpec in the initialize method so it keeps a fixed size?</blockquote> LayoutMorph class has a large number of convenience methods to help out in the 'instance creation' category. E.g. note code in #keepMorphExtent Explore the options and make the code do what you want. </div> <div class="pre" style="margin: 0; padding: 0; font-family: monospace"> <h2>4. Mêng / Youthful Folly</h2> <img id="Image26" src="https://clovemedia.github.io/i_ching/images/trigram4.png" alt="Above trigram 4 Kên" width="33" height="24" align="absmiddle" border="0" /> above KÊN KEEPING STILL, MOUNTAIN <img id="Image27" src="https://clovemedia.github.io/i_ching/images/trigram3.png" alt="Below trigram 3 K'an" width="33" height="24" align="absmiddle" border="0" /> below K'AN THE ABYSMAL, WATER In this hexagram we are reminded of youth and folly in two different ways. The image of the upper trigram, Kên, is the mountain, that of the lower, K'an, is water; the spring rising at the foot of the mountain is the image of inexperienced youth. Keeping still is the attribute of the upper trigram; that of the lower is the abyss, danger. Stopping in perplexity on the brink of a dangerous abyss is a symbol of the folly of youth. However, the two trigrams also show the way of overcoming the follies of youth. Water is something that of necessity flows on. When the spring gushes forth, it does not know at first where it will go. But its steady flow fills up the deep place blocking its progress, and success is attained. THE JUDGMENT YOUTHFUL FOLLY has success. It is not I who seek the young fool; The young fool seeks me. At the first oracle I inform him. If he asks two or three times, it is importunity. If he importunes, I give him no information. Perseverance furthers. HTH, -KenD </div> </body></html>