Win32 C/C++ Sample Code

main.cpp

#include <windows.h>
#include <tchar.h>
#include "MainWindow.h"

int WINAPI _tWinMain(HINSTANCE hInstance, HINSTANCE hPrevInstance, LPTSTR lpCmdLine, int nCmdShow)
{
    MSG msg;

    MainWindow *winMain = new MainWindow(hInstance);

    if (!winMain->Run(nCmdShow))
    {
        delete winMain;
        return 1;
    }

    while (GetMessage(&msg, NULL, 0, 0))
    {
        // translate virtual-key messages into character messages
        TranslateMessage(&msg);
        // Send message to WindowProcedure
        DispatchMessage(&msg);
    }

    delete winMain;

    return msg.wParam;
}

MainWindow.cpp

#include <windows.h>
#include "MainWindow.h"

const TCHAR* MainWindow::m_szClassName = _T("DrawLite");
HINSTANCE MainWindow::m_hInstance = nullptr;

MainWindow::MainWindow(HINSTANCE hInstance)
{
    m_hInstance = hInstance;

    m_wndClass.cbSize = sizeof(WNDCLASSEX);
    m_wndClass.style = CS_DBLCLKS;
    m_wndClass.lpfnWndProc = MainWndProc;
    m_wndClass.cbClsExtra = 0;
    m_wndClass.cbWndExtra = 0;
    m_wndClass.hInstance = hInstance;
    m_wndClass.hIcon = LoadIcon(NULL, IDI_APPLICATION);
    m_wndClass.hCursor = LoadCursor(NULL, IDC_ARROW);
    m_wndClass.hbrBackground = (HBRUSH)(COLOR_WINDOW);
    m_wndClass.lpszMenuName = NULL;
    m_wndClass.lpszClassName = m_szClassName;
    m_wndClass.hIconSm = LoadIcon(NULL, IDI_APPLICATION);
}

MainWindow::~MainWindow()
{

}

LRESULT CALLBACK MainWindow::MainWndProc(HWND hwnd, UINT msg, WPARAM wParam, LPARAM lParam)
{
    TCHAR str[256];
    switch (msg)
    {
    case WM_DESTROY:
        PostQuitMessage(0);
        break;
    case WM_LBUTTONDOWN:
        POINT pt;
        pt.x = LOWORD(lParam);
        pt.y = HIWORD(lParam);
        wsprintf(str, _T("Coordinates are \nX=%i and Y=%i"), pt.x, pt.y);
        MessageBox(hwnd, str, _T("Left Button Clicked"), MB_OK);
        break;
    case WM_CHAR:
        wsprintf(str, _T("Pressed %c key"), wParam);
        MessageBox(hwnd, str, _T("Key Pressed"), MB_OK);
        break;
    default:
        return DefWindowProc(hwnd, msg, wParam, lParam);
    }

    return 0;
}

bool MainWindow::Run(int nCmdShow)
{
    if (!RegisterClassEx(&m_wndClass))
        return false;

    m_hwnd = CreateWindowEx(
                 0,
                 m_szClassName,
                 _T("Draw Lite"),
                 WS_OVERLAPPEDWINDOW,
                 CW_USEDEFAULT,
                 CW_USEDEFAULT,
                 500,
                 400,
                 NULL,
                 NULL,
                 m_hInstance,
                 NULL);

    if (!m_hwnd)
        return false;

    ShowWindow(m_hwnd, nCmdShow);

    return true;
}

MainWindow.h

#ifndef MAINWINDOW_H
#define MAINWINDOW_H

#include <windows.h>
#include <tchar.h>

class MainWindow
{
public:
    MainWindow(HINSTANCE hInstance);
    ~MainWindow();
    static LRESULT CALLBACK MainWndProc(HWND hwnd, UINT msg, WPARAM wParam, LPARAM lParam);
    bool Run(int nCmdShow);

private:
    WNDCLASSEX m_wndClass;
    static HINSTANCE m_hInstance;
    HWND m_hwnd;
    static const TCHAR* m_szClassName;
    void leftMouseClick(HWND hwd, LPARAM lParam);
};

#endif // MAINWINDOW_H

Awesome!!!

if anyone else uses this remember to change it to windows in properties -> linker -> system