Re: [Plib-users] Errors using PW

[Steve B. <sjb...@ai...>]

Tinoshi Kitazawa wrote:
> Hello everybody!
>  
> I have got a big problem with PW. Well, when I use PW my program crashes 
> whenever I call something like glOrtho(), or glVertex() etc... The 
> debugger says it's due to an access violation. I guess it is 'cause I 
> created my windows using pwInit() and OpenGL doesn't know what is the 
> 'current' window (i.e. says 'this' is NULL).

Weird.

I havn't seen that happen before.

Do the 'PW' demo programs work on your machine?

> What can I do? I want to use pwInit() instead of 
> glutMainLoop() etc. 'cause I need a keyboard function who can deal with 
> multiple pressed and released keys. 

You can do that in GLUT.

Check out:  glutKeyboardUpFunc/glutSpecialUpFunc.

You can use the regular glutKeyboardFunc to detect keys pressed down
and use the UpFunc to figure out when they are released - then you can
keep an array with one element per key character to handle multiple
press/releases.

However:

1) Be sure to disable key auto-repeat - which confuse the issue horribly.
2) Beware of the situation where someone presses (say) 'a' - then pushes
down the shift key - then releases the 'a'...which will now report as the
capital 'A' being released.

PW has the same kinds of problems.

---------------------------- Steve Baker -------------------------
HomeEmail: <sjb...@ai...>    WorkEmail: <sj...@li...>
HomePage : http://www.sjbaker.org
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