CreateTexture loading bitmap problem

Question

I have the following function it takes 3 arguments being a texture array, filename and texture id but when I invoke the function using:

CreateTexture(g_Texture, "\\\\nsq021vs\\u2\\abcb433\\MyDocs\\Visual Studio 2008\\Projects\\CaptainEdsAdv\\CaptainEdsAdv\\Back.bmp", BACK_ID  );

it returns this:

    -    pBitmap 0xcccccccc {sizeX=??? sizeY=??? data=??? } _AUX_RGBImageRec *
 sizeX CXX0030: Error: expression cannot be evaluated 
 sizeY CXX0030: Error: expression cannot be evaluated 
 data CXX0030: Error: expression cannot be evaluated

This is the function its self:

void CreateTexture(UINT textureArray[], LPSTR strFileName, int textureID)
{
    AUX_RGBImageRec *pBitmap = NULL;
    FILE *pFile = NULL;         // The File Handle we will use to read the bitmap

    if(!strFileName)         // Return from the function if no file name was passed in
     return;

    pFile = fopen(strFileName,"r");      // Check To See If The File Exists

    if(pFile)           // If we have a valid file pointer we found the file
    {
     pBitmap = auxDIBImageLoad(strFileName);   // Load the bitmap and store the data
    }
    else            // If we can't find the file, quit!
    {             // Prompt the error message
     MessageBox(NULL, "Couldn't find a texture!", "Error!", MB_OK);
     exit(0);
    }

    // Generate a texture with the associative texture ID stored in the array
    glGenTextures(1, &textureArray[textureID]);

    // This sets the alignment requirements for the start of each pixel row in memory.
    glPixelStorei (GL_UNPACK_ALIGNMENT, 1);

    // Bind the texture to the texture arrays index and init the texture
    glBindTexture(GL_TEXTURE_2D, textureArray[textureID]);

    // Build Mipmaps (builds different versions of the picture for distances - looks better)
    gluBuild2DMipmaps(GL_TEXTURE_2D, 3, pBitmap->sizeX, pBitmap->sizeY, GL_RGB, GL_UNSIGNED_BYTE, pBitmap->data);

    // Lastly, we need to tell OpenGL the quality of our texture map.  GL_LINEAR_MIPMAP_LINEAR
    // is the smoothest.  GL_LINEAR_MIPMAP_NEAREST is faster than GL_LINEAR_MIPMAP_LINEAR, 
    // but looks blochy and pixilated.  Good for slower computers though.  

    glTexParameteri(GL_TEXTURE_2D,GL_TEXTURE_MIN_FILTER,GL_LINEAR_MIPMAP_NEAREST);
    glTexParameteri(GL_TEXTURE_2D,GL_TEXTURE_MAG_FILTER,GL_LINEAR_MIPMAP_LINEAR);

    // The default GL_TEXTURE_WRAP_S and ""_WRAP_T property is GL_REPEAT.
    // We need to turn this to GL_CLAMP_TO_EDGE, otherwise it creates ugly seems
    // in our sky box.  GL_CLAMP_TO_EDGE does not repeat when bound to an object.
    glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_S, GL_CLAMP_TO_EDGE);
    glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_T, GL_CLAMP_TO_EDGE);

    // Now we need to free the bitmap data that we loaded since openGL stored it as a texture

    if (pBitmap)          // If we loaded the bitmap
    {
     if (pBitmap->data)        // If there is texture data
     {
      free(pBitmap->data);      // Free the texture data, we don't need it anymore
     }

     free(pBitmap);         // Free the bitmap structure
    }
}

I really hope someone can help I am completely baffled I am trying to load the correct type .bmp am sure tis sommething to do with the pointer....

Answer 1

Why do you open the file? Why don't you close it? Why don't you check if pBitmap is null right after calling auxDIBImageLoad instead of first dereferencing it in th ecall to gluBuild2DMipmaps? You say it returns this but CreateTexture doesn't return anything.