LongToDouble

[Peter]

Deleted

[Charles Pegge]

Yes Peter, that will work

Code: [Select]

sys a=10,b=20
double d=a/b
print d   '0,5
There was a problem with number literals and type conversion but this has now been fixed.

You can also avoid byvals everywhere by placing the type first eg:

Code: [Select]

Sub ResizeGl(long width, long height) 'byvals
Sub ResizeGl(long*width, long*height) 'byrefs

Charles

[Charles Pegge]

Yes, the problem was specific to literal number expressions containing a division operator being passed to a function expecting a floating point value.

Er sorry I'll decypher that

example:

Code: [Select]

function f(single v)
  print v
end function

f 1/2 '<-- this displayed 0 instead of 0.5

Charles

[Charles Pegge]

Hi Peter,

you still need to remove those "&" address operators

Also CreateWindowEx final param should be byref 0

but there is still a problem somewhere...

Have you considered building on one of the Opengl examples like OpenglWin1.o2bas.

It uses standard WinMain and WndProc techniques. It resizes smoothly and works correctly with Wine. You also have the full set of Opengl headers. These things take a long time to get right so give yourself a head start

Charles

[Charles Pegge]

Hi Peter,

If a parameter in your prototype specifies BYREF implicitly or explicitly  then you must not use "&". It will not work. The compiler automatically resolves the reference when it sees the prototype. This is Basic, not C.

Only for functions without a prototype  is '&' needed to pass a parameter address explicitly.

Why not start with Charles GL and turn it into Peter GL. It is much easier to start with working code than building from scratch. You can make alterations to the code in small testable steps with much easier bug detection.

Charles

[Charles Pegge]

But this is how nature does it.

We were once encoded as bacteria and gradually morphed into Humans

And MS Windows is more complex than Human DNA. You can just about squeeze the human genome onto 1 CD but not Windows Vista!

Charles

[Charles Pegge]

Peter,

Whether an intelligent agent was involved or not, copy and paste is to be found everywhere in nature. We share 60% of our genes with fruit flies, and our sexual reproduction system, which we share with plants,fungi and all other higher organisms is entirely cut and paste

What I'm really suggesting is that this is the most efficient way to create new functionality while preserving some degree of compatibility.

Charles