Error in gdiplus.h

[Xadoom]

I'm becoming mad....
My compiler gives many errors in gdiplus.h why???
This is the code (copied by MSDN)

#include <windows.h>
#include <stdio.h>
#include <gdiplus.h>
using namespace Gdiplus;

INT GetEncoderClsid(const WCHAR* format, CLSID* pClsid); // helper function

INT main()
{
// Initialize GDI+.
GdiplusStartupInput gdiplusStartupInput;
ULONG_PTR gdiplusToken;
GdiplusStartup(&gdiplusToken, &gdiplusStartupInput, NULL);

CLSID encoderClsid;
Status stat;
Image* image = new Image(L"prova.jpg");

// Get the CLSID of the PNG encoder.
GetEncoderClsid(L"image/bmp", &encoderClsid);

stat = image->Save(L"prova.bmp", &encoderClsid, NULL);

if(stat == Ok)
printf("Prova.bmp was saved successfully\n");
else
printf("Failure: stat = %d\n", stat);

delete image;
GdiplusShutdown(gdiplusToken);
return 0;
}



HELP!!! :sick:

[ovidiucucu]

[ Redirected thread ]

My compiler gives many errors in gdiplus.h why???
What errors?

[Xadoom]

102 errors:

Compiling...
StdAfx.cpp
d:\programmi\sdk\include\gdiplusinit.h(32) : error C2065: 'ULONG_PTR' : undeclared identifier
d:\programmi\sdk\include\gdiplusinit.h(32) : error C2065: 'token' : undeclared identifier
d:\programmi\sdk\include\gdiplusinit.h(32) : error C2165: 'left-side modifier' : cannot modify pointers to data
d:\programmi\sdk\include\gdiplusinit.h(32) : error C2071: 'NotificationHookProc' : illegal storage class
d:\programmi\sdk\include\gdiplusinit.h(33) : error C2146: syntax error : missing ')' before identifier 'token'
d:\programmi\sdk\include\gdiplusinit.h(33) : error C2165: 'left-side modifier' : cannot modify pointers to data
d:\programmi\sdk\include\gdiplusinit.h(33) : error C2071: 'NotificationUnhookProc' : illegal storage class
d:\programmi\sdk\include\gdiplusinit.h(33) : error C2059: syntax error : ')'
d:\programmi\sdk\include\gdiplusinit.h(86) : error C2059: syntax error : 'const'
....
....
...

[ovidiucucu]

As a quick fix, add

typedef unsigned __int32 ULONG_PTR;

before including <gdiplus.h>

[Xadoom]

I don't know how, but now i have compiled this code with Visual C++.
Now I Have a problem LInking:
--------------------Configuration: prova - Win32 Debug--------------------
Linking...
prova.obj : error LNK2001: unresolved external symbol "int __cdecl GetEncoderClsid(unsigned short const *,struct _GUID *)" (?GetEncoderClsid@@YAHPBGPAU_GUID@@@Z)
Debug/prova.exe : fatal error LNK1120: 1 unresolved externals
Error executing link.exe.

prova.exe - 2 error(s), 0 warning(s)

I have included gdiplus.lib, what i need to include too? Help please!

[Xadoom]

NOW IT WORKS!!
I have also included this function:

int GetEncoderClsid(const WCHAR* format, CLSID* pClsid)
{
UINT num = 0; // number of image encoders
UINT size = 0; // size of the image encoder array in bytes

ImageCodecInfo* pImageCodecInfo = NULL;

GetImageEncodersSize(&num, &size);
if(size == 0)
return -1; // Failure

pImageCodecInfo = (ImageCodecInfo*)(malloc(size));
if(pImageCodecInfo == NULL)
return -1; // Failure

GetImageEncoders(num, size, pImageCodecInfo);

for(UINT j = 0; j < num; ++j)
{
if( wcscmp(pImageCodecInfo[j].MimeType, format) == 0 )
{
*pClsid = pImageCodecInfo[j].Clsid;
free(pImageCodecInfo);
return j; // Success
}
}

free(pImageCodecInfo);
return -1; // Failure
}

[ovidiucucu]

NOW IT WORKS!!
Now you know that, no matter how much you trust in example source, need more than a simple copy/paste. ;)