Program crashes, oleaut32.dll fault.

[pirateninja]

So heres the code. Just a simple test to load a JPG file and bitblt it to the screen, no errors, program just crashes. I am using the LoadAnImage function found here
http://www.codeguru.com/cpp/g-m/bitm...cle.php/c4935/ . I am almost certain that it is the way I am using the LoadAnImage func that is causing the problem but I don't know how else it would be done.

#include <cstdlib>
#include <iostream>
#include <olectl.h> 
#include <ole2.h> 

/*
../../Dev-Cpp/lib/libgdi32.a
../../Dev-Cpp/lib/libuser32.a
../../Dev-Cpp/lib/libolepro32.a
../../Dev-Cpp/lib/libuuid.a
../../Dev-Cpp/lib/liboleaut32.a
*/


using namespace std;

HBITMAP LoadAnImage(char* FileName)
   {
   // Use IPicture stuff to use JPG / GIF files
   IPicture* p;
   IStream* s;
   IPersistStream* ps;
   HGLOBAL hG;
   void* pp;
   FILE* fp;


   // Read file in memory
   fp = fopen(FileName,"rb");
   if (!fp)
   return NULL;

   fseek(fp,0,SEEK_END);
   int fs = ftell(fp);
   fseek(fp,0,SEEK_SET);
   hG = GlobalAlloc(GPTR,fs);
   if (!hG)
      {
      fclose(fp);
      return NULL;
      }
   pp = (void*)hG;
   fread(pp,1,fs,fp);
   fclose(fp);

   // Create an IStream so IPicture can
   // CreateStreamOnHGlobal(hG,false,&s);
   if (!s)
      {
      GlobalFree(hG);
      return NULL;
      }

   OleLoadPicture(s,0,false,IID_IPicture,(void**)&p);

   if (!p)
      {
      s->Release();
      GlobalFree(hG);
      return NULL;
      }
   s->Release();
   GlobalFree(hG);

   HBITMAP hB = 0;
   p->get_Handle((unsigned int*)&hB);

   // Copy the image. Necessary, because upon p's release,
   // the handle is destroyed.
   HBITMAP hBB = (HBITMAP)CopyImage(hB,IMAGE_BITMAP,0,0,
                                    LR_COPYRETURNORG);

   p->Release();
   return hBB;
   }


int main(int argc, char *argv[])
{
    HBITMAP newimage = LoadAnImage("omg.jpg");
    HDC dcmem;
    SelectObject(dcmem, newimage);
    BitBlt(GetDC(0),0,0,500,500,dcmem,0,0,SRCPAINT); 
    DeleteDC(dcmem);
    DeleteObject(newimage);
    system("PAUSE");
    return EXIT_SUCCESS;
}

I am using Dev-C++ if that matters.

[Zaccheus]

The LoadAnImage function uses COM.

You need to call CoInitialize at the start of your main function and CoUninitialize at the end of your main function.

[pirateninja]

Thanks. I also found out that I needed OleInitialize and CoUninitialize as well.