大神们帮小弟看下为什么游戏编程中怎么载入不了图片啊

int Load_Bitmap_File(BITMAP_FILE_PTR bitmap, char *filename)
{
// this function opens a bitmap file and loads the data into bitmap int file_handle, // the file handle
index; // looping index UCHAR *temp_buffer = NULL; // used to convert 24 bit images to 16 bit
OFSTRUCT file_data; // the file data information // open the file if it exists
if ((file_handle = OpenFile(filename,&file_data,OF_READ))==-1)
return(0); // now load the bitmap file header
_lread(file_handle, &bitmap->bitmapfileheader,sizeof(BITMAPFILEHEADER)); // test if this is a bitmap file
if (bitmap->bitmapfileheader.bfType!=BITMAP_ID)
{
// close the file
_lclose(file_handle); // return error
return(0);
} // end if // now we know this is a bitmap, so read in all the sections // first the bitmap infoheader // now load the bitmap file header
_lread(file_handle, &bitmap->bitmapinfoheader,sizeof(BITMAPINFOHEADER)); // now load the color palette if there is one
if (bitmap->bitmapinfoheader.biBitCount == 8)
{
_lread(file_handle, &bitmap->palette,MAX_COLORS_PALETTE*sizeof(PALETTEENTRY)); // now set all the flags in the palette correctly and fix the reversed
// BGR RGBQUAD data format
for (index=0; index < MAX_COLORS_PALETTE; index++)
{
// reverse the red and green fields
int temp_color = bitmap->palette[index].peRed;
bitmap->palette[index].peRed = bitmap->palette[index].peBlue;
bitmap->palette[index].peBlue = temp_color;
// always set the flags word to this
bitmap->palette[index].peFlags = PC_NOCOLLAPSE;
} // end for index } // end if // finally the image data itself
_lseek(file_handle,-(int)(bitmap->bitmapinfoheader.biSizeImage),SEEK_END); // now read in the image, if the image is 8 or 16 bit then simply read it
// but if its 24 bit then read it into a temporary area and then convert
// it to a 16 bit image if (bitmap->bitmapinfoheader.biBitCount==8 || bitmap->bitmapinfoheader.biBitCount==16 ||
bitmap->bitmapinfoheader.biBitCount==24)
{
// delete the last image if there was one
if (bitmap->buffer)
free(bitmap->buffer); // allocate the memory for the image
if (!(bitmap->buffer = (UCHAR *)malloc(bitmap->bitmapinfoheader.biSizeImage)))
{
// close the file
_lclose(file_handle); // return error
return(0);
} // end if // now read it in
_lread(file_handle,bitmap->buffer,bitmap->bitmapinfoheader.biSizeImage); } // end if
else
{
// serious problem
return(0); } // end else #if 0
// write the file info out
printf("\nfilename:%s \nsize=%d \nwidth=%d \nheight=%d \nbitsperpixel=%d \ncolors=%d \nimpcolors=%d",
filename,
bitmap->bitmapinfoheader.biSizeImage,
bitmap->bitmapinfoheader.biWidth,
bitmap->bitmapinfoheader.biHeight,
bitmap->bitmapinfoheader.biBitCount,
bitmap->bitmapinfoheader.biClrUsed,
bitmap->bitmapinfoheader.biClrImportant);
#endif // close the file
_lclose(file_handle); // flip the bitmap
Flip_Bitmap(bitmap->buffer,
bitmap->bitmapinfoheader.biWidth*(bitmap->bitmapinfoheader.biBitCount/8),
bitmap->bitmapinfoheader.biHeight); // return success
return(1); } // end Load_Bitmap_File /////////////////////////////////////////////////////////// int Unload_Bitmap_File(BITMAP_FILE_PTR bitmap)
{
// this function releases all memory associated with "bitmap"
if (bitmap->buffer)
{
// release memory
free(bitmap->buffer); // reset pointer
bitmap->buffer = NULL; } // end if // return success
return(1); } // end Unload_Bitmap_File