• Tal (19/19) Dec 25 2011 Linking the following two files gives me a link-error:
• Andrej Mitrovic (4/4) Dec 25 2011 You can't prototype D functions like that, they belong to a module.
• Tal (2/2) Dec 25 2011 I want to save the hInstance of WinMain so I would be able to use it lat...
• Joshua Reusch (2/4) Dec 25 2011 just define a public variable in the global scope.
• Tal (2/2) Dec 25 2011 I'm quite new to this language, could you please provide a short snippet...
• Joshua Reusch (13/15) Dec 25 2011 --- a.d:
• Jakob Ovrum (3/4) Dec 25 2011 It's important to note that public is the default access level
• Re: dmd linker (OPTLINK) gives Error 42: Symbol Undefined when using extern (1/1) Dec 27 2011 Thanks, this is it!
• Joshua Reusch (3/5) Dec 25 2011 If you don't know: You can also get the HINSTANCE with

Tal <publictal gmail.com> writes:

Linking the following two files gives me a link-error:

a.d:
	import std.stdio;

	extern (D) string test ();

	void main()
	{
		writeln(test());
		readln();
	}
____________________________________
b.d:
	string test () {
		return "hello";
	}
____________________________________
the error I get is:

Error 42: Symbol Undefined _D1a4testFZAya`

---errorlevel 1

What is wrong ?

Andrej Mitrovic <andrej.mitrovich gmail.com> writes:

You can't prototype D functions like that, they belong to a module.
test is built as _D1b4testFZAya, not _D1a4testFZAya (notice the module
names, a and b after _D1).

What exactly are you trying to do? DLLs?

Tal <publictal gmail.com> writes:

I want to save the hInstance of WinMain so I would be able to use it later in
some
other module. So how do I accomplish that ?

Joshua Reusch <yoschi arkandos.de> writes:

Am 25.12.2011 22:37, schrieb Tal:
 I want to save the hInstance of WinMain so I would be able to use it later in
some
 other module. So how do I accomplish that ?

just define a public variable in the global scope.

Tal <publictal gmail.com> writes:

I'm quite new to this language, could you please provide a short snippet of code
to clarify ?

Joshua Reusch <yoschi arkandos.de> writes:

Am 25.12.2011 23:26, schrieb Tal:
 I'm quite new to this language, could you please provide a short snippet of
code
 to clarify ?

--- a.d:

import std.stdio;
import b;

void main() {
   writeln("some_var from Module b: \"", b.some_var, "\"");
}

--- b.d:

public string some_var = "Hello, world!";

//you can also use static module constructors to set your vars
static this() {
   some_var ~= " -- How are you?";
}

"Jakob Ovrum" <jakobovrum gmail.com> writes:

On Sunday, 25 December 2011 at 22:46:33 UTC, Joshua Reusch wrote:
 public string some_var = "Hello, world!";

It's important to note that public is the default access level 
here.

Re: dmd linker (OPTLINK) gives Error 42: Symbol Undefined when using extern <publictal gmail.com> writes:

Thanks, this is it!

Joshua Reusch <yoschi arkandos.de> writes:

Am 25.12.2011 22:37, schrieb Tal:
 I want to save the hInstance of WinMain so I would be able to use it later in
some
 other module. So how do I accomplish that ?

If you don't know: You can also get the HINSTANCE with 
GetModuleHandle(NULL);