I have recorded screencast abaut this my operations with Pharo. https://drive.google.com/open?id=0B_0p5J9SNPlBOHduQlIxdHI0bk0
But sometimes I'm moved forvard to operations: MyStructure rebuildFieldAccessors. -> DoIt -> Ok myStruct := MyStructure externalNew. -> DoIt -> Ok myStruct := id: 42. -> MessageDoesUnderstood. I'm doesn't understand in which cases i got to this moment. I'm associete that with that what i have a several copy's Pharo. And somebody affect to other. 2017-04-19 18:46 GMT+04:00 Ben Coman <b...@openinworld.com>: > Hi Yuriy, > > Hope I can help. I tried your example in build 60463 and its works fine. > So lets break it down. > > On Wed, Apr 19, 2017 at 8:46 PM, Yuriy Babah <babah.yuri...@gmail.com> > wrote: > >> Hello everyone, >> >> I'm new to Pharo and have tried do example with structure in Unified FFI >> manual. >> >> FFIExternalStructure subclass: #MyStructure >> instanceVariableNames: '' >> classVariableNames: '' >> package: 'FFIDemo' >> > > You opened a System Browser and entered and accepted the above first on > its own, > such that the new package & class were added and the new class selected. > > Then you clicked on the <Class> button, such that the "no messages" text > in the third pane changed from > normal font to bold font. Then clicked on "no messages" to display the > method template.... > messageSelectorAndArgumentNames > "comment stating purpose of message" > | temporary variable names | > statements > > And replaced that text with the text below from "fieldsDesc" onwards, > the Accepted that. > > >> MyStructure class>>#fieldsDesc >> ^ #( >> uint8 id; >> char * struct_name; >> uint name_length; >> ) >> >> > Then separately you evaluated(doIt) the following... > > >> MyStructure rebuildFieldAccessors >> > > > >> . -> DoIt -> MessageNotUnderstood >> > What's i do wrong? >> > > Does a debug window appear? What is the exact text of the title bar, > which details which message is not understood by which class. > This provides an important hint to what is wrong. > > Further help might need a live chat. I'll be in discord for a couple of > hours, but ask anyone there... > https://discord.gg/KCKQSSt > > cheers -ben > > I do it in >> Pharo5 and 6, widows and os x. >> Sorry for my english, it's not my native language. >> >> > Your english is not too bad :) > > cheers -ben >
