1. RE: define_c_var for Win32??? - Rob
Robert Craig wrote:
> Ray Smith writes:
> > Will "define_c_var" be supported in Windows one day?
>
> If someone can tell me how to get the address of a
> variable in a Windows .dll, i.e. a .dll that I've loaded
> dynamically using LoadLibrary(), I can probably add this
> feature very easily.
>
> Currently you can run define_c_var() with Euphoria
> for Windows, but it just tries to find the symbol as
> if it were an exported function - I thought there was a chance
> this would work, but I didn't know whether you were
> supposed to look up "x", "_x" or something else.
Thanks Rob,
It works perfectly.
Using the Allegro DLL I was able to grab a few exported variables
which is great news. It also means if you have the source code
of any DLL's you want to use you can use extern's in your variable
declarations to open them up for Euphoria.
Now ... should I re-write euAllegro????? hmmmm
Ray Smith
http;//www.geocities.com/ray_223
2. RE: define_c_var for Win32??? - Rob
mabrown at SENET.COM.AU wrote:
> "define_c_var"? Is there a "define_c_var" that I missed?
>
> Is your need for this to avoid all the peeking / poking, type conversion
> stuff when calling dll functions? If it is then I would also like this.
No sorry Mark,
This is used to get the address of an exported variable in a DLL.
For instance Allegro has dozens of exported variables for things like
screen / font structure address. What I did was write my own DLL
and created simple functions which returned these static variables.
I could have (if I had known) just used define_c_var!
The Euphoria doco says define_c_var ss Linux only so I never looked
further.
Ray Smith
http;//www.geocities.com/ray_223
