#include<windows.h>
#define WINDOW_TITLE "Creating a Window"
#define WINDOW_WIDTH 800
#define WINDOW_HEIGHT 600


LRESULT CALLBACK WndProc(HWND hWnd, UINT message, WPARAM wParam, LPARAM lParam)
{
	switch(message)
	{
	case WM_DESTROY:
		PostQuitMessage(0);
		return 0;
	case WM_PAINT:
		ValidateRect(hWnd, 0);
		return 0;
	}

	return DefWindowProc(hWnd, message, wParam, lParam);
}

int WINAPI WinMain(HINSTANCE hInstance, HINSTANCE hPrevInstance, LPSTR lpCmdLine, int nCmdShow)
{
	WNDCLASSEX wcex;
	wcex.cbSize = sizeof(WNDCLASSEX);
	wcex.style = CS_HREDRAW|CS_VREDRAW|CS_OWNDC;
	wcex.lpfnWndProc = WndProc;
	wcex.cbClsExtra = 0;
	wcex.cbWndExtra = 0;
	wcex.hInstance = hInstance;
	wcex.hIcon = LoadIcon(NULL, IDI_APPLICATION);
	wcex.hCursor = LoadIcon(NULL, IDC_ARROW);
	wcex.hbrBackground = (HBRUSH)(COLOR_WINDOW+1);
	wcex.lpszMenuName = NULL;
	wcex.lpszClassName = "MyWindowClass";
	wcex.hIconSm = LoadIcon(NULL, IDI_APPLICATION);

	// Register the class
	RegisterClassEx(&wcex);

	HWND hWnd = CreateWindow(WINDOW_TITLE, WINDOW_TITLE, WS_OVERLAPPEDWINDOW, CW_USEDEFAULT, CW_USEDEFAULT,
		WINDOW_WIDTH, WINDOW_HEIGHT, 0, 0, hInstance, 0);

	// adjust to acctual window size
	RECT rect = {0, 0, WINDOW_WIDTH, WINDOW_HEIGHT};

	AdjustWindowRect(&rect, GetWindowLong(hWnd, GWL_STYLE), false);
	SetWindowPos(hWnd, 0, 0, 0, rect.right - rect.left, rect.bottom - rect.top, SWP_NOZORDER|SWP_NOMOVE);

	ShowWindow(hWnd, SW_SHOW);
	UpdateWindow(hWnd);

	MSG msg;

	while(1)
	{
		if(PeekMessage(&msg, NULL, 0, 0, PM_REMOVE))
		{
			if(msg.message == WM_QUIT)
			{
				break;
			}
			TranslateMessage(&msg);
			DispatchMessage(&msg);
		}
		else
		{
			// Render here
		}
	}

	return 0;
}