cannot convert from 'overloaded-function'

From:

fyderniX@gmail.com

Newsgroups:

microsoft.public.vc.language

Date:

24 Apr 2007 13:40:24 -0700

Message-ID:

<1177447224.619866.94610@c18g2000prb.googlegroups.com>

Hey; I'm setting up a wrapper for a library that uses some weird
datatypes (IMO):

The ADT (In mupdf::Data):

struct fz_colorspace_s
        {
            int refs;
            char name[16];
            int n;
            void (*convpixmap)(fz_colorspace *ss, fz_pixmap *sp, fz_colorspace
*ds, fz_pixmap *dp);
   void (*convcolor)(fz_colorspace *ss, float *sv, fz_colorspace
*ds, float *dv);
            void (*toxyz)(fz_colorspace *, float *src, float *xyz);
            void (*fromxyz)(fz_colorspace *, float *xyz, float *dst);
            void (*drop)(fz_colorspace *);
        };

Int mupdf::Functions:

[DllImport("fitzlib.dll")]
        static void pdf_convcolor(Data::fz_colorspace *ss, float *sv,
Data::fz_colorspace *ds, float *dv);
        [DllImport("fitzlib.dll")]
        static void pdf_convpixmap(Data::fz_colorspace *ss, Data::fz_pixmap
*sp, Data::fz_colorspace *ds, Data::fz_pixmap *dp);
        [DllImport("fitzlib.dll")]
        static void xyztorgb(Data::fz_colorspace *fzcs, float *xyz, float
*rgb);
        [DllImport("fitzlib.dll")]
        static void rgbtoxyz(Data::fz_colorspace *fzcs, float *rgb, float
*xyz);

The declaration (In main()):

   mupdf::Functions muf;
   mupdf::Data::fz_colorspace pdf_devicergb = { -1, "DeviceRGB", 3,
muf.pdf_convpixmap, muf.pdf_convcolor, muf.rgbtoxyz,
muf.xyztorgb, nil };

The pdf_devicergb declaration is throwing fits:

..\sandbox2.cpp(38) : error C2440: 'initializing' : cannot convert from
'overloaded-function' to 'void (__cdecl *)(mupdf::Data::fz_colorspace
*,mupdf::Data::fz_pixmap *,mupdf::Data::fz_colorspace
*,mupdf::Data::fz_pixmap *)'
        None of the functions with this name in scope match the target
type
..\sandbox2.cpp(38) : error C2440: 'initializing' : cannot convert from
'overloaded-function' to 'void (__cdecl *)(mupdf::Data::fz_colorspace
*,float *,mupdf::Data::fz_colorspace *,float *)'
        None of the functions with this name in scope match the target
type
..\sandbox2.cpp(38) : error C2440: 'initializing' : cannot convert from
'overloaded-function' to 'void (__cdecl *)(mupdf::Data::fz_colorspace
*,float *,float *)'
        None of the functions with this name in scope match the target
type
..\sandbox2.cpp(38) : error C2440: 'initializing' : cannot convert from
'overloaded-function' to 'void (__cdecl *)(mupdf::Data::fz_colorspace
*,float *,float *)'
        None of the functions with this name in scope match the target
type
..\sandbox2.cpp(38) : error C2440: 'initializing' : cannot convert from
'void *' to 'void (__cdecl *)(mupdf::Data::fz_colorspace *)'
        Conversion from 'void*' to pointer to non-'void' requires an
explicit cast

Any help?
SigmaX