René's URL Explorer Experiment

{"@context":"https://schema.org","@type":"DiscussionForumPosting","headline":"[Tasks]: Basics of coding on RISC OS, level 4","articleBody":"### Contact Details (optional)\n\n_No response_\n\n### Background\n\nLevel 1: Getting the source (from Git)\r\nLevel 2: Making system calls to flash an LED\r\nLevel 3: A command line tool to give info on Sprites/JPEGs split across several source files\r\n\r\nThis task outlines level 4 of the course, a little bit harder, building on levels 1-3. Based on feedback given at the meeting where level 3 was shown and comments on the videos this next instalment should:\r\n\r\nProgress to using the Window Manager. This could take one of several forms:\r\n\r\n- A simple call to `Wimp_Initialise` and get the icon bar icon set up, files dragged to the icon are analysed with the same ImageInfo code from the previous tutorial and the result thrown as a Wimp_ReportError box or just run in a command window\r\n- Same as for Wimp SWIs but instead using `Toolbox_Initialise`\r\n- Using the [FrontEnd](https://gitlab.riscosopen.org/RiscOS/Sources/Programmer/FrontEnd) module provided in !System to give the application an icon bar icon and simple UI based on a textual description\r\n- Regardless of the approach (or all 3!) the tutorial should explain the concept of application directories and their typical contents of !Boot !Run !Sprites and so on\r\n- This is a further opportunity to exercise makefiles, in particular the CApp shared makefile can put together common layout C or assembler applications, or BasicApp for stuff in BASIC\r\n- Suggested name !ImageInfo only because that was the command line tool name\r\n\r\nAt level 2 we presented (in order of [most number of views](https://www.youtube.com/playlist?list=PLEnraaJ9VQfXFQCVSmUgabVmdvqmLDgZZ) first)\r\n\r\n1. C (with the DDE, gcc optional)\r\n2. C++ (in CFront, g++ optional)\r\n3. Assembler (gas syntax, ObjAsm optional)\r\n4. BBC BASIC\r\n5. Python\r\n6. Lua\r\n\r\nDon't be limited by these 6 though! All languages for which there is a RISC OS variant are up for grabs if volunteers have a particular area of interest they'd like to produce.\n\n### Definition of Done\n\nPaolo has kindly offered to 'top \u0026 tail' any videos submitted.\r\n\r\nThe meeting to review this topic is 08-Jul-2023, so ideally material needs to be complete by 01-Jul-2023 to give time for editing.\r\n\r\nThis task would be complete once the new level 4 videos are edited and available on youtube for developers.\n\n### Code of Conduct\n\n- [X] I agree to follow this project's Code of Conduct","author":{"url":"https://github.com/rps102","@type":"Person","name":"rps102"},"datePublished":"2023-06-19T21:42:45.000Z","interactionStatistic":{"@type":"InteractionCounter","interactionType":"https://schema.org/CommentAction","userInteractionCount":4},"url":"https://github.com/39/CodingOnRISC-OS/issues/39"}