Поиск пикселей в изображении

int LoadScreenBytes()
{
    if(lsb == true)
        delete[] ScreenData;
    ScreenData = new BYTE[3*ScreenX*ScreenY];
    lsb = true;
 
    HDC hdc = GetDC(NULL), hdcMem = CreateCompatibleDC (hdc);
    HBITMAP hBitmap = CreateCompatibleBitmap(hdc, ScreenX, ScreenY);
    BITMAPINFOHEADER bmi = {0};
    bmi.biSize = sizeof(BITMAPINFOHEADER);
    bmi.biPlanes = 1;
    bmi.biBitCount = 24;
    bmi.biWidth = ScreenX;
    bmi.biHeight = -ScreenY;
    bmi.biCompression = BI_RGB;
    SelectObject(hdcMem, hBitmap);
    BitBlt(hdcMem, 0, 0, ScreenX, ScreenY, hdc, 0, 0, SRCCOPY);
 
    GetDIBits(hdc, hBitmap, 0, ScreenY, ScreenData, (BITMAPINFO*)&bmi, DIB_RGB_COLORS);
    DeleteObject(hBitmap);
    DeleteDC(hdcMem);
    ReleaseDC(NULL, hdc);
    return 0;
}

int GetColor(int x, int y)
{
    if(lsb == false)
        return -1;
    int R=ScreenData[3*((y*ScreenX)+x)+2];
    int G=ScreenData[3*((y*ScreenX)+x)+1];
    int B=ScreenData[3*((y*ScreenX)+x)];
 
    cc[0]=R;
    cc[1]=G;
    cc[2]=B;
 
    return 0;
}

EC=LoadScreenBytes();
EC=GetColor(cp.x,cp.y);

ScreenX = GetDeviceCaps(GetDC(0), HORZRES);
ScreenY = GetDeviceCaps(GetDC(0), VERTRES);
int ir[5];
int cc[3];
int ScreenX = 0;
int ScreenY = 0;
BYTE* ScreenData = NULL;
bool lsb = false;