CPlusPlus Thread

For some reason my SetPixel external CrossHair isn't working- it's based off of another source, but almost completely rewritten to make it neater (IMHO). Here is the output (no errors when building):

'[MPGH Public] External CrossHair v1.0.exe' (Win32): Loaded 'C:\Users\Levi\Documents\Visual Studio 2012\Projects\[MPGH Public] External CrossHair v1.0\Release\[MPGH Public] External CrossHair v1.0.exe'. Symbols loaded.
'[MPGH Public] External CrossHair v1.0.exe' (Win32): Loaded 'C:\Windows\SysWOW64\ntdll.dll'. Cannot find or open the PDB file.
'[MPGH Public] External CrossHair v1.0.exe' (Win32): Loaded 'C:\Windows\SysWOW64\kernel32.dll'. Cannot find or open the PDB file.
'[MPGH Public] External CrossHair v1.0.exe' (Win32): Loaded 'C:\Windows\SysWOW64\KernelBase.dll'. Cannot find or open the PDB file.
'[MPGH Public] External CrossHair v1.0.exe' (Win32): Loaded 'C:\Windows\SysWOW64\user32.dll'. Cannot find or open the PDB file.
'[MPGH Public] External CrossHair v1.0.exe' (Win32): Loaded 'C:\Windows\SysWOW64\win32u.dll'. Cannot find or open the PDB file.
'[MPGH Public] External CrossHair v1.0.exe' (Win32): Loaded 'C:\Windows\SysWOW64\gdi32.dll'. Cannot find or open the PDB file.
'[MPGH Public] External CrossHair v1.0.exe' (Win32): Loaded 'C:\Windows\SysWOW64\gdi32full.dll'. Cannot find or open the PDB file.
'[MPGH Public] External CrossHair v1.0.exe' (Win32): Loaded 'C:\Windows\SysWOW64\msvcp_win.dll'. Cannot find or open the PDB file.
'[MPGH Public] External CrossHair v1.0.exe' (Win32): Loaded 'C:\Windows\SysWOW64\ucrtbase.dll'. Cannot find or open the PDB file.
'[MPGH Public] External CrossHair v1.0.exe' (Win32): Loaded 'C:\Windows\SysWOW64\msvcp110.dll'. Cannot find or open the PDB file.
'[MPGH Public] External CrossHair v1.0.exe' (Win32): Loaded 'C:\Windows\SysWOW64\msvcr110.dll'. Cannot find or open the PDB file.
'[MPGH Public] External CrossHair v1.0.exe' (Win32): Loaded 'C:\Windows\SysWOW64\imm32.dll'. Cannot find or open the PDB file.
'[MPGH Public] External CrossHair v1.0.exe' (Win32): Loaded 'C:\Windows\SysWOW64\combase.dll'. Cannot find or open the PDB file.
'[MPGH Public] External CrossHair v1.0.exe' (Win32): Loaded 'C:\Windows\SysWOW64\rpcrt4.dll'. Cannot find or open the PDB file.
'[MPGH Public] External CrossHair v1.0.exe' (Win32): Loaded 'C:\Windows\SysWOW64\sspicli.dll'. Cannot find or open the PDB file.
'[MPGH Public] External CrossHair v1.0.exe' (Win32): Loaded 'C:\Windows\SysWOW64\cryptbase.dll'. Cannot find or open the PDB file.
'[MPGH Public] External CrossHair v1.0.exe' (Win32): Loaded 'C:\Windows\SysWOW64\bcryptprimitives.dll'. Cannot find or open the PDB file.
'[MPGH Public] External CrossHair v1.0.exe' (Win32): Loaded 'C:\Windows\SysWOW64\sechost.dll'. Cannot find or open the PDB file.
'[MPGH Public] External CrossHair v1.0.exe' (Win32): Loaded 'C:\Windows\SysWOW64\uxtheme.dll'. Cannot find or open the PDB file.
'[MPGH Public] External CrossHair v1.0.exe' (Win32): Loaded 'C:\Windows\SysWOW64\msvcrt.dll'. Cannot find or open the PDB file.
The program '[92] [MPGH Public] External CrossHair v1.0.exe' has exited with code -1073741510 (0xc000013a).

Here is the code I have written/modified:
#include <Windows.h>
#include <iostream>
#include <math.h>

#define WIN32_LEAN_AND_MEAN

namespace CrossHair_Variables {
    int Size;
    namespace Color {
        int Red;
        int Green;
        int Blue;
    };
};

int main() {
    std::cout << "Crosshair size in pixels:\n";
    std::cin >> CrossHair_Variables::Size;
    if((CrossHair_Variables::Size % 2) == 0) {
        CrossHair_Variables::Size += 1;
    };
    system("cls");
    std::cout << "Crosshair color (Red of RGB):\n";
    std::cin >> CrossHair_Variables::Color::Red;
    if (CrossHair_Variables::Color::Red > 255) {
        CrossHair_Variables::Color::Red = 255;
    }
    else if (CrossHair_Variables::Color::Red < 0) {
        CrossHair_Variables::Color::Red = 0;
    };
    system("cls");
    std::cout << "Crosshair color (Green of RGB):\n";
    std::cin >> CrossHair_Variables::Color::Green;
    if (CrossHair_Variables::Color::Green > 255) {
        CrossHair_Variables::Color::Green = 255;
    }
    else if (CrossHair_Variables::Color::Green < 0) {
        CrossHair_Variables::Color::Green = 0;
    };
    system("cls");
    std::cout << "Crosshair color (Blue of RGB):\n";
    std::cin >> CrossHair_Variables::Color::Blue;
    if (CrossHair_Variables::Color::Blue > 255) {
        CrossHair_Variables::Color::Blue = 255;
    }
    else if (CrossHair_Variables::Color::Blue < 0) {
        CrossHair_Variables::Color::Blue = 0;
    };
    system("cls");
    std::cout << "Loading CrossHair..";
    int BaseX = ((GetSystemMetrics(SM_CXSCREEN) / 2) - ((CrossHair_Variables::Size - 1) / 2));
    int BaseY = ((GetSystemMetrics(SM_CYSCREEN) / 2) - ((CrossHair_Variables::Size - 1) / 2));
    COLORREF Color = RGB(
        CrossHair_Variables::Color::Red,
        CrossHair_Variables::Color::Green,
        CrossHair_Variables::Color::Blue
    );
    while (true) {
        for(int Index = 0; (Index < CrossHair_Variables::Size); Index++) {
            SetPixel(
                (HDC)HWND_DESKTOP,
                (BaseX + Index),
                (BaseY + ((CrossHair_Variables::Size - 1) / 2)),
                Color
            );
            SetPixel(
                (HDC)HWND_DESKTOP,
                (BaseX + ((CrossHair_Variables::Size - 1) / 2)),
                (BaseY + Index),
                Color
            );
        };
        Sleep(5);
    };
};

And here is the original source (credits @SMOKe and @Hell_Demon // MPGH.NET):
#include <windows.h>
#include <iostream>
#include <math.h>
using namespace std;

bool crosshairon=false;
HDC ragedc = NULL;
int crosshairsize=0;
int cx=0;
int cy=0;

void CrossThread(void)
{
    while(1)
    {
        if(GetAsyncKeyState(VK_NUMPAD0)&1)
        {
            crosshairon=!crosshairon;
            ragedc = GetDC(HWND_DESKTOP);
            cx=GetSystemMetrics(SM_CXSCREEN)/2-((crosshairsize-1)/2);
            cy=GetSystemMetrics(SM_CYSCREEN)/2-((crosshairsize-1)/2);
        }
        Sleep(1);
    }
}

int main()
{
    cout<<"Crosshair size in pixels:\n";
    cin>>crosshairsize;
    if(crosshairsize%2==0) //check if its even
    {
        crosshairsize+=1; //if it is add 1
    }
    system("cls"); // clear the console :)
    cout<<"Press numpad0 to toggle the crosshair on and off\n";
    CreateThread(0,0,(LPTHREAD_START_ROUTINE)CrossThread,0,0,0);
    while(1)
    {
        if(crosshairon==true)
        {
            for(int i=0;i<crosshairsize;i++)
            {
                SetPixel(ragedc, cx+i, cy+((crosshairsize-1)/2), RGB(255,0,0));
                SetPixel(ragedc, cx+((crosshairsize-1)/2), cy+i, RGB(255,0,0));
            }
        }
        Sleep(1);
    }
}

For some reason their code works, mine doesn't, any ideas?