[Gdal-dev] Reading Raster Data using GDAL

[Ayman Kamal]

Ok I managed finally using this piece of code to get
the raw data, but still there is one problem

but there is still one problem, the size of the file
should be
nXSize*nYSize*sizeof(unsigned char), but when I
checked the saved file it was greater than I expected.

of course I checked the size of the file and not size
on disk.

Any way and the bottom left of the image had a black
area.

Can u help me solve this ASAP please?
//-----------------------------------------------------
      unsigned char *pafScanlines;
      int   nXSize = poVRTBand->GetXSize();
      int   nYSize = poVRTBand->GetYSize();
      
      GDALDataType p = poVRTBand->GetRasterDataType();
      pafScanlines = (unsigned char *)
CPLMalloc(sizeof(unsigned char )*nXSize*nYSize);
      poVRTBand->RasterIO(GF_Read, 0, 0, nXSize,
nYSize, 
                           pafScanlines, nXSize,
nYSize, GDT_Byte, 
                           0, 0 );
      FILE* pStream;
      pStream = fopen("new.bmp","w");
      fwrite(pafScanlines,nXSize*nYSize,1 ,pStream);
      fclose(pStream);
      
      
//-----------------------------------------------------

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