Re: imports in functions

[Andrej Mitrovic]

Walter, it looks like this addition inadvertently fixes the issue of
DLLs not linkable due to Phobos imports.

I've had this DLL (alongside with dllmodule.d which had initialization
calls inside DLLMain):
module EdrLib;

import std.utf;

pragma(lib, "gdi32.lib");
pragma(lib, "comdlg32.lib");
import win32.windef;
import win32.wingdi;

export extern(Windows) BOOL EdrCenterText(HDC hdc, PRECT prc, string pString)
{
     SIZE size ;
     GetTextExtentPoint32(hdc, pString.toUTF16z, pString.length, &size) ;
     return TextOut(hdc, (prc.right - prc.left - size.cx) / 2,
                         (prc.bottom - prc.top - size.cy) / 2,
pString.toUTF16z, pString.length);
}

The header file produced from this would cause any client code which
imports the header to look for ModuleInitZ, which wouldn't exist in
the generated import library since it's an import library and not a
static library.

But, if I move the phobos import inside the EdrCenterText function:

export extern(Windows) BOOL EdrCenterText(HDC hdc, PRECT prc, string pString)
{
     import std.utf;

     SIZE size ;
     GetTextExtentPoint32(hdc, pString.toUTF16z, pString.length, &size) ;
     return TextOut(hdc, (prc.right - prc.left - size.cx) / 2,
                         (prc.bottom - prc.top - size.cy) / 2,
pString.toUTF16z, pString.length);
}

Then it works. My related bug report about this (and its complicated
to read due to various misunderstanding on my part) is
http://d.puremagic.com/issues/show_bug.cgi?id=6019.

But it's great that there's an actual workaround now!