NetNews Usenet Archive 1992 #18/NN_1992_18.iso/spool/comp/sys/sgi/12640

Text File | 1992-08-19 | 3.0 KB | 71 lines

Newsgroups: comp.sys.sgi
Path: sparky!uunet!charon.amdahl.com!pacbell.com!mips!odin!fido!paris.asd.sgi.com!alain
From: [e-mail] (Alain Dumesny)
Subject: Re: Inventor question
Message-ID: <[e-mail]>
Sender: [e-mail] (Usenet News Admin)
Reply-To: [e-mail]
Organization: Silicon Graphics Inc.
References:  <[e-mail]>
Date: Thu, 20 Aug 1992 02:11:46 GMT
Lines: 58

This question is rather specific, but other people on the Net who are using
Inventor might be interested, so I will post rather than mail directly.

In article <[e-mail]>, [e-mail] (Liew Beng Keat (Mr)) writes:
|>
|> I want to add a push button on the right trim of the form widget
|> (refer to pg 11-15 of the Iris Inventor Programming Guide) but my
|> attempts thus far has not succeeded to my requirements.
|>

When you say "trim of the form widget", I presume you mean the decoration
trim around the Xt Viewers (like the SoXtExaminerViewer). The viewers have
an addAppPushButton() method which will add pushbuttons to the left
decoration trim (do a man SoXtFullViewer). You can't add push buttons to
the right trim withought subclassing right now (that trim is reserved for
the viewers. The left trim is for the app).

You can of course create SoXtPushButtons and lay them out around a viewer
using motif once you build the viewer within a form.

|> I understand that there are a few ways for adding push buttons. The
|> setButtonImages() routine accepts either SGI.rgb files or rrggbb array
|> format RGB images or color index arrays.
|>

setButtonImages() is only used to specify what images will be used for up
and down state of the button. Make sure to create the button either in RGB
or color index mode (argument to the constructor) since this cannot
currently be changed at run time and that it matches what images you want
to display (else it will print an error message in DEBUG mode).

|> Could someone show me how the button up and button down images
|> are specified using rrggbb format as well as color index arrays.
|> It would be nice too if i know how to create SGI.rgb images which
|> setButtonImages can understand.
|>
|>
|> Beng Keat
|>
|>

.rgb images can be created using /usr/sbin/snapshot and /usr/sbin/scrsave
(for grabing something on the screen), or /usr/sbin/imged for
creating/editing one from scratch. imged can create either color index
(default) or rgb images.

Setting the buttons images to be .rgb files is simple for prototypes. If
want your image to be compiled in (what is used for the viewers) then you
need to convert those image files into a C text array which you include in
your code. Look under ~4Dgifts/iristools/imgtools for longimagedata()
(read rgb image and return an array of rrggbb) and sizeofimage() examples.
Then it is just a matter of using fprintf() to print those values out in a
format you can use in your C code.

Hope this helps...

-------------------------------------------------------------------------
Alain Dumesny    [e-mail]    [phone]        Silicon Graphics Inc.