gs:hide-tag

[newdep]

Hi Lutz,



There is something strange with 'gs:hide-tag,

sometimes it updates sometimes it does not..



If I use the boolean or not it does not update the screen.

show-tag works oke..



The example below does not work properly..



I need to resize the screen to get gs:hide-tag working..(an event)..



With or without the 'true is does not work refresh,

seems gs:hide-tag does it only once and then needs a refresh..



If I remove the sleep's, it doesnt help eighter..



Also, Seems that the rewrite of the tag changes my color, the red

in the screen turn 1 step darker...this also happens with gs:update..









#!/usr/bin/newlisp



;;;; initialization

(if (= ostype "Win32")

 (load (string (env "PROGRAMFILES") "/newlisp/guiserver.lsp"))

  (load "/usr/share/newlisp/guiserver.lsp"))



(gs:init)

(gs:get-screen)

(gs:frame 't  100 100 200 200 "")

(gs:set-background 't gs:black)

(gs:canvas 'canvas t)

(gs:add-to 't 'canvas)

(gs:set-visible 't true)



(for (r 0 200 6)

 (gs:fill-circle (string "L" r) (+ r 3) 9 3 gs:red))



(sleep 5000)

(gs:hide-tag "L6" true)

(sleep 5000)

(gs:show-tag "L6" true)

(sleep 5000)

(gs:hide-tag "L6" true)

[cormullion]

Yes I can't get this one to work. I have used hide-tag successfully, though. (http://www.alh.net/newlisp/phpbb/viewtopic.php?t=1805&highlight=hidetag">http://www.alh.net/newlisp/phpbb/viewto ... ht=hidetag">http://www.alh.net/newlisp/phpbb/viewtopic.php?t=1805&highlight=hidetag)



but I can't see why that works OK.

[Lutz]

The canvas needs a backgroud color in order to get repainted:



http://newlisp.org/guiserver/guiserver.lsp.html#gs_canvas">http://newlisp.org/guiserver/guiserver. ... #gs_canvas">http://newlisp.org/guiserver/guiserver.lsp.html#gs_canvas



in your program put this after your canvas definition:

Code Select Expand

(gs:set-background 'canvas gs:black)

Lutz



ps: the background color is used to erase the canvas before repainting it.

[newdep]

Pretty tricky actualy, i was under the impression that a background on

the frame was enough..., but it now works like a charm thanks!



Norman.

[cormullion]

Aah! Of course - that explains it...