Max Samukha Wrote: > On Thu, 12 Feb 2009 15:48:07 -0500, Eldar Insafutdinov > <[email protected]> wrote: > > >Bill Baxter Wrote: > > > >> On Fri, Feb 13, 2009 at 5:00 AM, Eldar Insafutdinov > >> <[email protected]> wrote: > >> > Bill Baxter Wrote: > >> > > >> >> On Fri, Feb 13, 2009 at 4:22 AM, Eldar Insafutdinov > >> >> <[email protected]> wrote: > >> >> > Can somebody help me with exporting functions from a DLL? I am > >> >> > defining functions in C++ like > >> >> > extern "C" __declspec(dllexport) void* > >> >> > __qtd_QObject_QObject_QObject(args) > >> >> > After compiling a DLL with MINGW and producing a lib file for it with > >> >> > implib I am trying to use them from D. > >> >> > In D I declare them as > >> >> > extern (C) void* __qtd_QObject_QObject_QObject(args); > >> >> > And then compile it and link it to the .lib file made by implib for > >> >> > that DLL, but optlink complains that symbol is undefined. I tried to > >> >> > use that Cfunction from C++ and it worked. What I can do? > >> >> > > >> >> > >> >> What's the implib command you're using? Often you need to use the > >> >> /system flag. > >> >> > >> >> --bb > >> > > >> > okay, second problem then - I need to be able to call extern (C) > >> > functions defined in D code from DLL. I tried to do getProcAddress(NULL, > >> > "__some_D_func"); > >> > but this doesn't work. > >> > >> I think you may have to write some code to explicitly register your D > >> functions with the DLL. > >> You could write a mini getDCodeProcAddress kind of thing in your D > >> code. Then give a pointer to that function to the C code in the DLL > >> at startup. Then C code uses getDCodeProcAddress from there. > >> > >> Maybe there's an easier way, but that's what I'd try. > >> > >> --bb > > > >This way won't really work because there are dozens of such a functions - > >that's for virtual dispatch. I have just solved it by declaring functions > >"export extern (C)" and adding "_" prefix to function name when calling > >GetProcAddress. So technically there are no issues to make qtd working on > >windows! > > You are a genius! ;)
No, you are ;)
