Цвет пикселя HBITMAP по координатам

HDC filedc= CreateCompatibleDC(NULL);
    HDC wnddc= CreateCompatibleDC(NULL);
    HBITMAP wndbitmap = (HBITMAP) LoadImage(NULL, filename1, IMAGE_BITMAP, 0, 0,LR_LOADFROMFILE| LR_DEFAULTSIZE|LR_VGACOLOR);
    HBITMAP filebitmap = (HBITMAP) LoadImage(NULL, filename , IMAGE_BITMAP, 0, 0,LR_LOADFROMFILE| LR_DEFAULTSIZE|LR_VGACOLOR);
    SelectObject(filedc,filebitmap);
    SelectObject(wnddc,wndbitmap);

COLORREF bigg = GetPixel(wnddc,x,y);
int r1= GetRValue(bigg);
            int g1 = GetGValue(bigg);
            int b1 = GetBValue(bigg);

#include "stdafx.h"
#define _AFXDLL
#include <afxwin.h>
 
#include <iostream>
#include <GdiPlus.h>
//
//#pragma comment (lib, "GDIPlus.lib")
//using namespace std;
using namespace Gdiplus;
 
  BOOL LoadBitmapFromBMPFile( LPTSTR szFileName, HBITMAP *phBitmap,
   HPALETTE *phPalette )
   {
 
   BITMAP  bm;
 
   *phBitmap = NULL;
   *phPalette = NULL;
 
   // Use LoadImage() to get the image loaded into a DIBSection
   *phBitmap = (HBITMAP)LoadImage( NULL, szFileName, IMAGE_BITMAP, 0, 0,
               LR_CREATEDIBSECTION | LR_DEFAULTSIZE | LR_LOADFROMFILE );
   if( *phBitmap == NULL )
     return FALSE;
 
   // Get the color depth of the DIBSection
   GetObject(*phBitmap, sizeof(BITMAP), &bm );
   // If the DIBSection is 256 color or less, it has a color table
   if( ( bm.bmBitsPixel * bm.bmPlanes ) <= 8 )
   {
   HDC           hMemDC;
   HBITMAP       hOldBitmap;
   RGBQUAD       rgb[256];
   LPLOGPALETTE  pLogPal;
   WORD          i;
 
   // Create a memory DC and select the DIBSection into it
   hMemDC = CreateCompatibleDC( NULL );
   hOldBitmap = (HBITMAP)SelectObject( hMemDC, *phBitmap );
   // Get the DIBSection's color table
   GetDIBColorTable( hMemDC, 0, 256, rgb );
   // Create a palette from the color tabl
   pLogPal = (LOGPALETTE *)malloc( sizeof(LOGPALETTE) + (256*sizeof(PALETTEENTRY)) );
   pLogPal->palVersion = 0x300;
   pLogPal->palNumEntries = 256;
   for(i=0;i<256;i++)
   {
     pLogPal->palPalEntry[i].peRed = rgb[i].rgbRed;
     pLogPal->palPalEntry[i].peGreen = rgb[i].rgbGreen;
     pLogPal->palPalEntry[i].peBlue = rgb[i].rgbBlue;
     pLogPal->palPalEntry[i].peFlags = 0;
   }
   *phPalette = CreatePalette( pLogPal );
   // Clean up
   free( pLogPal );
   SelectObject( hMemDC, hOldBitmap );
   DeleteDC( hMemDC );
   }
   else   // It has no color table, so use a halftone palette
   {
   HDC    hRefDC;
 
   hRefDC = GetDC( NULL );
   *phPalette = CreateHalftonePalette( hRefDC );
   ReleaseDC( NULL, hRefDC );
   }
   return TRUE;
 
   }
                
 
 
int _tmain(int argc, _TCHAR* argv[])
{
    HBITMAP bmap;
    HPALETTE pal;
    CPalette  p1;
    LoadBitmapFromBMPFile(L"integra.bmp",&bmap,&pal);
    HDC filedc= CreateCompatibleDC(NULL);
    SelectObject(filedc,bmap);
    COLORREF color = GetPixel(filedc,777,258);
    int r2= GetRValue(color);
            int g2 = GetGValue(color);
            int b2 = GetBValue(color);
            std::cout << r2<<" "<< g2<<" "<<b2;
    return 0;
}

/*
Подключаемые заголовки в stdafx.h
#include <tchar.h>
#include <windows.h>
#include <gdiplus.h>
#include <iostream>
*/
#include "stdafx.h"
 
#pragma comment(lib, "gdiplus.lib")
 
int _tmain(int argc, _TCHAR* argv[])
{
    // Инициализация GDI+.
    Gdiplus::GdiplusStartupInput input;
    Gdiplus::GdiplusStartupOutput output;
    ULONG_PTR token;
    Gdiplus::GdiplusStartup(&token, &input, &output);
 
    Gdiplus::Color color;
    Gdiplus::Bitmap* bitmap;
 
    bitmap = new Gdiplus::Bitmap(L"picture.bmp");
    bitmap->GetPixel(50, 50, &color);
    delete bitmap;
    std::cout << "BMP: " << (unsigned)color.GetRed() << " " << (unsigned)color.GetGreen() << " " << (unsigned)color.GetBlue() << std::endl;
 
    bitmap = new Gdiplus::Bitmap(L"picture.png");
    bitmap->GetPixel(50, 50, &color);
    delete bitmap;
    std::cout << "PNG: " << (unsigned)color.GetRed() << " " << (unsigned)color.GetGreen() << " " << (unsigned)color.GetBlue() << std::endl;
 
    bitmap = new Gdiplus::Bitmap(L"picture.jpg");
    bitmap->GetPixel(50, 50, &color);
    delete bitmap;
    std::cout << "JPG: " << (unsigned)color.GetRed() << " " << (unsigned)color.GetGreen() << " " << (unsigned)color.GetBlue() << std::endl;
 
    bitmap = new Gdiplus::Bitmap(L"picture.gif");
    bitmap->GetPixel(50, 50, &color);
    delete bitmap;
    std::cout << "GIF: " << (unsigned)color.GetRed() << " " << (unsigned)color.GetGreen() << " " << (unsigned)color.GetBlue() << std::endl;
 
    // Деинициализация GDI+.
    Gdiplus::GdiplusShutdown(token);
 
    _tsystem(_T("PAUSE"));
    return 0;
}