Re^6: [OT - MS Visual Studio] How to build a dll that Win32::API can access

its an Apparent bug in Win32::API if function returns a float or a double

Heh ... that's the post that started me thinking about this.

With floats, there may be an issue, but I don't think Win32::API should have any problems with doubles. At least, I don't think earlier versions did.

But then, when I try to build a dll using Visual Studio, I find that I can't even get the library files to behave in accordance with my expectations. Admittedly I don't use Visual Studio all that often.

I also don't use Win32::API very much (in fact I avoid it), but little issues like this keep gnawing away at me. Looks like I might have to spend a few hours on this. (My first thoughts were that it must just be a case of me doing something really stupid - which could yet prove to be the case.)

Thanks for the feedback.

Cheers,
Rob
Update: I'm getting very similar results if I change from doubles to ints - so I don't think it's just a doubles/floats issue. I'll see if anyone on the perl-win32-users list has any advice.

Comment on Re^6: [OT - MS Visual Studio] How to build a dll that Win32::API can access

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Re^7: [OT - MS Visual Studio] How to build a dll that Win32::API can access by BrowserUk (Patriarch) on May 25, 2008 at 05:22 UTC
Have you tried reverting to 0.41? I've had nothing but trouble with later versions. Right now, even having re-installed 5.8.6, manually searched for and expunged all reminents later builds, even simple tests that previously worked--like Re^3: Calling dll function(created in VC++) from Perl and several others--don't. I know that sounds like FUD, and I apologise if it turns out to be so, but right now I'm at a loss to explain it. Examine what is said, not who speaks -- Silence betokens consent -- Love the truth but pardon error. "Science is about questioning the status quo. Questioning authority". In the absence of evidence, opinion is indistinguishable from prejudice. "Too many [] have been sedated by an oppressive environment of political correctness and risk aversion."	[reply]
Re^8: [OT - MS Visual Studio] How to build a dll that Win32::API can access by syphilis (Archbishop) on May 25, 2008 at 09:01 UTC
Have you tried reverting to 0.41? No - I've gone back to 0.20 (which used to work fine for me), and I've tried both 0.53 and 0.55. They're all behaving the same. If I build with `__stdcall` they can't find the "procedure". If I build with `__declspec(dllexport)` they segfault. It's starting to really annoy me - so I'll give up. (It just becomes yet another challenge that I've failed.) Thankfully, I personally have no need for either Win32::API or Visual Studio. Cheers, Rob	[reply] [d/l] [select]
Re^9: [OT - MS Visual Studio] How to build a dll that Win32::API can access by BrowserUk (Patriarch) on May 25, 2008 at 09:04 UTC
If I build with __stdcall ... Why build with stdcall? Try __cdecl. Examine what is said, not who speaks -- Silence betokens consent -- Love the truth but pardon error. "Science is about questioning the status quo. Questioning authority". In the absence of evidence, opinion is indistinguishable from prejudice. "Too many [] have been sedated by an oppressive environment of political correctness and risk aversion."	[reply]
Re^10: [OT - MS Visual Studio] How to build a dll that Win32::API can access by syphilis (Archbishop) on May 25, 2008 at 09:21 UTC
Re^11: [OT - MS Visual Studio] How to build a dll that Win32::API can access by BrowserUk (Patriarch) on May 25, 2008 at 10:03 UTC
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