#ifndef UNICODE
	#define UNICODE
#endif
#include <windows.h>

HWND mainframe;

LRESULT CALLBACK MainWndProc(HWND hwnd,UINT msg,WPARAM wParam,LPARAM lParam);
HWND CreateButton(LPCTSTR name, int x, int y, int w, int h, HWND parent);

int WINAPI WinMain(HINSTANCE hInst, HINSTANCE hPrevInstance, LPSTR lpCmdLine, int nCmdShow)
{
	MSG msg; // MSG structure to store messages
	WNDCLASSEX wcx; // WINDOW class information
	HWND button, hOKButton;

	// Initialize the struct to zero
	ZeroMemory(&wcx,sizeof(WNDCLASSEX));
	wcx.cbSize = sizeof(WNDCLASSEX); // Window size. Must always be sizeof(WNDCLASSEX)
	wcx.style = CS_HREDRAW|CS_VREDRAW |CS_DBLCLKS ; // Class styles
	wcx.lpfnWndProc = (WNDPROC)MainWndProc; // Pointer to the callback procedure
	wcx.cbClsExtra = 0; // Extra byte to allocate following the wndclassex structure
	wcx.cbWndExtra = 0; // Extra byte to allocate following an instance of the structure
	wcx.hInstance = hInst; // Instance of the application
	wcx.hIcon = NULL; // Class Icon
	wcx.hCursor = LoadCursor(NULL, IDC_ARROW); // Class Cursor
	wcx.hbrBackground = (HBRUSH)(COLOR_WINDOW); // Background brush
	wcx.lpszMenuName = NULL; // Menu resource
	wcx.lpszClassName = TEXT("Lesson2"); // Name of this class
	wcx.hIconSm = NULL; // Small icon for this class

// Register this window class with MS-Windows
	if (!RegisterClassEx(&wcx))
		return 0;

	mainframe = CreateWindowEx(0, //Extended window style
			TEXT("Lesson2"), // Window class name
			TEXT("Whatever"), // Window title
			WS_OVERLAPPEDWINDOW, // Window style
			CW_USEDEFAULT,CW_USEDEFAULT, // (x,y) pos of the window
			CW_USEDEFAULT,CW_USEDEFAULT, // Width and height of the window
			HWND_DESKTOP, // HWND of the parent window (can be null also)
			NULL, // Handle to menu
			hInst, // Handle to application instance
			NULL); // Pointer to window creation data

	if (mainframe)
	{
		printf("no");
	}
	button = CreateButton("Test", 1, 1, 500, 500, mainframe);

	ShowWindow(mainframe, nCmdShow);
	UpdateWindow(mainframe);
	while (GetMessage(&msg,NULL,0,0))
	{
		TranslateMessage(&msg);
		DispatchMessage(&msg);
	}

	return msg.wParam;
}

LRESULT CALLBACK MainWndProc(HWND hwnd, UINT msg, WPARAM wParam, LPARAM lParam)
{
	switch (msg)
	{
		case WM_DESTROY:
			PostQuitMessage(0);
			break;
		default:
			// Call the default window handler
			return DefWindowProc(hwnd,msg,wParam,lParam);
	}

	return 0;
}
HWND CreateButton(LPCTSTR name, int x, int y, int w, int h, HWND parent)
{
	return CreateWindow("BUTTON", name, WS_VISIBLE | WS_CHILD | BS_DEFPUSHBUTTON, x, y, w, h, parent, NULL, (HINSTANCE)GetWindowLong(parent, GWL_HINSTANCE), NULL);
}