[Mingw-users] Successful compile of simple GDI+ program using modified headers

[Andy Sy <an...@ne...>]

Providing these steps for comment and further testing by others

1) First download the following GDIplus headers

  http://www.codeguru.com/code/legacy/gdi/GDIPlus.zip

*** These may have come from the Platform SDK.

2) Then make the following mods:

i. In GdiPlusEnums.h:

   Comment out

     enum EmfPlusRecordType;

   and change

     #define GDIP_WMF_RECORD_TO_EMFPLUS(n)   ((EmfPlusRecordType)((n) | GDIP_WMF_RECORD_BASE))

   to

     #define GDIP_WMF_RECORD_TO_EMFPLUS(n)   ((n) | GDIP_WMF_RECORD_BASE)

   *** This looks like a harmless change

ii. In GdiPlusImaging.h

   Change

     PixelFormat PixelFormat;

   to

     PixelFormat PixelFormat1;

   *** I'm almost certain this will break stuff, but at least it will let
       you compile successfully.  A better solution needs to be discovered.

iii.  In GdiPlusimageAttributes.h

   Change

     return SetStatus(DllExports::GdipSetImageAttributesColorKeys(
                    nativeImageAttr,type,FALSE,NULL,NULL));

   to

     return SetStatus(DllExports::GdipSetImageAttributesColorKeys(
                    nativeImageAttr,type,FALSE,0,0));

   *** This just eliminates your pesky pointer to int conversion
       warning, so I believe this is a benign modification

iv. In GdiPlusHeaders.h

   Change

     friend Graphics;

   to

     friend class Graphics;

   *** This also looks like a benign modification, is it?

3) Create libgdiplus.a using 'reimp' from mingw-utils

   Get the gdiplus.dll under \windows\WinSxS\... and do:

     reimp gdiplus.dll

   That's it!


The linedraw.cpp GDI plus sample program compiles successfully using:

  gcc -IincludeXXX -LlibXXX linedraw.cpp -lstdc++ -lgdiplus -mwindows

where includeXXX and libXXX points to the include directory where the
gdiplus headers and libgdiplus.a reside respectively.

More feedback on success or failure compiling more complex gdiplus
programs needed.