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| From | Michael Gerbracht <nospam@cityweb.de> |
| Subject | Re: Plotting Jpegs in Toolbox Window |
| Newsgroups | comp.sys.acorn.programmer |
| Date | Sun, 03 Apr 2011 12:50:01 +0100 |
| Message-ID | <51be1e7d34nospam@cityweb.de> (permalink) |
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Mister Ron <mrronman@googlemail.com> wrote: > has anyone got a guide to plotting jpegs into a toolbox window. > I can plot to the screen ok but don't know how to get the toolbox will > redraw the jpeg when the window is covered over. In ResED you can define that a window requires help of the application to redraw it (Other Properties -> untick Auto-redraw). If you have done this RISC OS will generate a toolbox event when part of the window has been hidden and needs to be redrawn now. Basically RISC OS will give you the coordinates of a number of rectangles you need to redraw. You can also put the jpeg into a draw file and render it instead - this might be easier. You can probably find an example application in Basic which shows a draw file. I can remember that I had it somewhere but can't find it at the moment. Hopefully someone here can point you to it. Michael -- Please replace nospam by m.gerbracht when replying by e-mail
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Plotting Jpegs in Toolbox Window Mister Ron <mrronman@googlemail.com> - 2011-04-02 14:33 -0700
Re: Plotting Jpegs in Toolbox Window Michael Gerbracht <nospam@cityweb.de> - 2011-04-03 12:50 +0100
Re: Plotting Jpegs in Toolbox Window Gavin Wraith <gavin@wra1th.plus.com> - 2011-04-03 15:12 +0100
Re: Plotting Jpegs in Toolbox Window Christopher Bazley <cs99cjb@gmail.com> - 2011-04-13 14:41 -0700
Re: Plotting Jpegs in Toolbox Window Mister Ron <mrronman@googlemail.com> - 2011-04-18 12:07 -0700
Re: Plotting Jpegs in Toolbox Window Mister Ron <mrronman@googlemail.com> - 2011-04-18 13:21 -0700
Re: Plotting Jpegs in Toolbox Window Martin Wuerthner <spamtrap@mw-software.com> - 2011-05-01 11:21 +0200
Re: Plotting Jpegs in Toolbox Window Mister Ron <mrronman@googlemail.com> - 2011-05-01 05:06 -0700
Re: Plotting Jpegs in Toolbox Window Gerph <gerph@gerph.org> - 2011-05-01 15:25 -0700
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