#pragma once

extern "C" 
{
	#define HANDLE void*
	#define DECLARE_HANDLE(name) typedef HANDLE name
	#define WINGDIAPI __declspec(dllimport)
	#define WINUSERAPI __declspec(dllimport)
	#define WINBASEAPI __declspec(dllimport)
	#define WINAPI __stdcall
	#define NULL 0
	#define APIENTRY WINAPI
	
	#define PFD_DOUBLEBUFFER            0x00000001
	#define PFD_STEREO                  0x00000002
	#define PFD_DRAW_TO_WINDOW          0x00000004
	#define PFD_DRAW_TO_BITMAP          0x00000008
	#define PFD_SUPPORT_GDI             0x00000010
	#define PFD_SUPPORT_OPENGL          0x00000020
	#define PFD_GENERIC_FORMAT          0x00000040
	#define PFD_NEED_PALETTE            0x00000080
	#define PFD_NEED_SYSTEM_PALETTE     0x00000100
	#define PFD_SWAP_EXCHANGE           0x00000200
	#define PFD_SWAP_COPY               0x00000400
	#define PFD_SWAP_LAYER_BUFFERS      0x00000800
	#define PFD_GENERIC_ACCELERATED     0x00001000
	#define PFD_SUPPORT_DIRECTDRAW      0x00002000
	#define PFD_DIRECT3D_ACCELERATED    0x00004000
	#define PFD_SUPPORT_COMPOSITION     0x00008000
	#define PFD_TYPE_RGBA        0
	#define PFD_TYPE_COLORINDEX  1

	#define WS_OVERLAPPED       0x00000000L
	#define WS_POPUP            0x80000000L
	#define WS_CHILD            0x40000000L
	#define WS_MINIMIZE         0x20000000L
	#define WS_VISIBLE          0x10000000L
	#define WS_DISABLED         0x08000000L
	#define WS_CLIPSIBLINGS     0x04000000L
	#define WS_CLIPCHILDREN     0x02000000L
	#define WS_MAXIMIZE         0x01000000L
	#define WS_CAPTION          0x00C00000L 
	#define WS_BORDER           0x00800000L
	#define WS_DLGFRAME         0x00400000L
	#define WS_VSCROLL          0x00200000L
	#define WS_HSCROLL          0x00100000L
	#define WS_SYSMENU          0x00080000L
	#define WS_THICKFRAME       0x00040000L
	#define WS_GROUP            0x00020000L
	#define WS_TABSTOP          0x00010000L
	
	#define CDS_UPDATEREGISTRY           0x00000001
	#define CDS_TEST                     0x00000002
	#define CDS_FULLSCREEN               0x00000004
	#define CDS_GLOBAL                   0x00000008
	#define CDS_SET_PRIMARY              0x00000010
	#define CDS_VIDEOPARAMETERS          0x00000020

	#define WGL_CONTEXT_DEBUG_BIT_ARB      0x00000001
	#define WGL_CONTEXT_FORWARD_COMPATIBLE_BIT_ARB 0x00000002
	#define WGL_CONTEXT_MAJOR_VERSION_ARB  0x2091
	#define WGL_CONTEXT_MINOR_VERSION_ARB  0x2092
	#define WGL_CONTEXT_LAYER_PLANE_ARB    0x2093
	#define WGL_CONTEXT_FLAGS_ARB          0x2094

	typedef int (WINAPI *PROC)();
	typedef unsigned long DWORD;
	typedef unsigned short WORD;
	typedef unsigned short USHORT;
	typedef unsigned char BYTE;
	typedef char CHAR;
	typedef unsigned int UINT;
	typedef long LONG;
	typedef const char* LPCSTR;
	typedef void VOID;
	typedef float FLOAT;
	typedef __int64 INT64;
	typedef int INT;
	typedef int INT32;
	typedef long BOOL;
	typedef void *HDC;
	typedef void *HGLRC;
	typedef void *HWND;
	typedef void *HMENU;
	typedef void *HINSTANCE;
	typedef void *LPVOID;
	
	typedef struct tagRECT
	{
		LONG    left;
		LONG    top;
		LONG    right;
		LONG    bottom;
	} RECT;

	typedef struct _POINTL
	{
		long x;
		long y;
	} POINTL, *PPOINTL;

	typedef struct _devicemodeA {
		BYTE dmDeviceName[32];
		WORD dmSpecVersion;
		WORD dmDriverVersion;
		WORD dmSize;
		WORD dmDriverExtra;
		DWORD dmFields;
		union {
		  struct {
			short dmOrientation;
			short dmPaperSize;
			short dmPaperLength;
			short dmPaperWidth;
			short dmScale;
			short dmCopies;
			short dmDefaultSource;
			short dmPrintQuality;
		  } a;
		  struct {
			POINTL dmPosition;
			DWORD  dmDisplayOrientation;
			DWORD  dmDisplayFixedOutput;
		  } b;
		} c;
		short dmColor;
		short dmDuplex;
		short dmYResolution;
		short dmTTOption;
		short dmCollate;
		BYTE   dmFormName[32];
		WORD   dmLogPixels;
		DWORD  dmBitsPerPel;
		DWORD  dmPelsWidth;
		DWORD  dmPelsHeight;
		union {
			DWORD  dmDisplayFlags;
			DWORD  dmNup;
		};
		DWORD  dmDisplayFrequency;
	} DEVMODE;

	typedef struct tagPIXELFORMATDESCRIPTOR
	{
		WORD  nSize;
		WORD  nVersion;
		DWORD dwFlags;
		BYTE  iPixelType;
		BYTE  cColorBits;
		BYTE  cRedBits;
		BYTE  cRedShift;
		BYTE  cGreenBits;
		BYTE  cGreenShift;
		BYTE  cBlueBits;
		BYTE  cBlueShift;
		BYTE  cAlphaBits;
		BYTE  cAlphaShift;
		BYTE  cAccumBits;
		BYTE  cAccumRedBits;
		BYTE  cAccumGreenBits;
		BYTE  cAccumBlueBits;
		BYTE  cAccumAlphaBits;
		BYTE  cDepthBits;
		BYTE  cStencilBits;
		BYTE  cAuxBuffers;
		BYTE  iLayerType;
		BYTE  bReserved;
		DWORD dwLayerMask;
		DWORD dwVisibleMask;
		DWORD dwDamageMask;
	} PIXELFORMATDESCRIPTOR;

	__declspec(dllimport) int WINAPI wglGetProcAddress(LPCSTR);
	__declspec(dllimport) HGLRC WINAPI wglCreateContext(HDC);
	__declspec(dllimport) long WINAPI wglMakeCurrent(HDC, HGLRC);
	__declspec(dllimport) HDC WINAPI GetDC(HWND hWnd);
	__declspec(dllimport) HWND WINAPI CreateWindowExA(DWORD dwExStyle, LPCSTR lpClassName, LPCSTR lpWindowName, DWORD dwStyle, int X, int Y, int nWidth, int nHeight, HWND hWndParent, HMENU hMenu, HINSTANCE hInstance, LPVOID lpParam);
	__declspec(dllimport) long WINAPI SetPixelFormat(HDC hdc, int format, const PIXELFORMATDESCRIPTOR * ppfd);
	__declspec(dllimport) int WINAPI ChoosePixelFormat(HDC hdc, const PIXELFORMATDESCRIPTOR *ppfd);
	__declspec(dllimport) int WINAPI ShowCursor(long bShow);
	__declspec(dllimport) long WINAPI SwapBuffers(HDC);
	__declspec(dllimport) short WINAPI GetAsyncKeyState(int vKey);
	__declspec(dllimport) __declspec(noreturn) void WINAPI ExitProcess(unsigned int uExitCode);
	__declspec(dllimport) long WINAPI ChangeDisplaySettingsA(DEVMODE* lpDevMode, DWORD dwFlags);
	__declspec(dllimport) void WINAPI OutputDebugStringA(LPCSTR lpOutputString);
	__declspec(dllimport) void WINAPI DebugBreak(VOID);

}