module std::os::win32 @if(env::WIN32);

alias Win32_WNDPROC = fn Win32_LRESULT(Win32_HWND, Win32_UINT, Win32_WPARAM, Win32_LPARAM);

struct Win32_WNDCLASSEXW
{
	Win32_UINT      cbSize;
	Win32_UINT      style;
	Win32_WNDPROC   lpfnWndProc;
	CInt            cbClsExtra;
	CInt            cbWndExtra;
	Win32_HINSTANCE hInstance;
	Win32_HICON     hIcon;
	Win32_HCURSOR   hCursor;
	Win32_HBRUSH    hbrBackground;
	Win32_LPCWSTR   lpszMenuName;
	Win32_LPCWSTR   lpszClassName;
	Win32_HICON     hIconSm;
}

struct Win32_MSG
{
	Win32_HWND hwnd;
	Win32_UINT message;
	Win32_WPARAM wParam;
	Win32_LPARAM lParam;
	Win32_DWORD time;
	Win32_POINT pt;
	Win32_DWORD lPrivate;
}

struct Win32_PAINTSTRUCT
{
	Win32_HDC  hdc;
	Win32_BOOL fErase;
	Win32_RECT rcPaint;
	Win32_BOOL fRestore;
	Win32_BOOL fIncUpdate;
	Win32_BYTE[32] rgbReserved;
}
alias Win32_PWNDCLASSEXW = Win32_WNDCLASSEXW*;
alias Win32_LPWNDCLASSEXW = Win32_WNDCLASSEXW*;
alias Win32_NPWNDCLASSEXW = Win32_WNDCLASSEXW*;

alias Win32_PPAINTSTRUCT = Win32_PAINTSTRUCT*;
alias Win32_LPPAINTSTRUCT = Win32_PAINTSTRUCT*;
alias Win32_NPPAINTSTRUCT = Win32_PAINTSTRUCT*;

alias Win32_PMSG = Win32_MSG*;
alias Win32_LPMSG = Win32_MSG*;
alias Win32_NPMSG = Win32_MSG*;

alias Win32_ATOM = ushort;

const Win32_DWORD WS_BORDER           = 0x00800000L;
const Win32_DWORD WS_CAPTION          = 0x00C00000L;
const Win32_DWORD WS_CHILD            = 0x40000000L;
const Win32_DWORD WS_CHILDWINDOW      = 0x40000000L;
const Win32_DWORD WS_CLIPCHILDREN     = 0x02000000L;
const Win32_DWORD WS_CLIPSIBLINGS     = 0x04000000L;
const Win32_DWORD WS_DISABLED         = 0x08000000L;
const Win32_DWORD WS_DLGFRAME         = 0x00400000L;
const Win32_DWORD WS_GROUP            = 0x00020000L;
const Win32_DWORD WS_HSCROLL          = 0x00100000L;
const Win32_DWORD WS_ICONIC           = 0x20000000L;
const Win32_DWORD WS_MAXIMIZE         = 0x01000000L;
const Win32_DWORD WS_MAXIMIZEBOX      = 0x00010000L;
const Win32_DWORD WS_MINIMIZE         = 0x20000000L;
const Win32_DWORD WS_MINIMIZEBOX      = 0x00020000L;
const Win32_DWORD WS_OVERLAPPED       = 0x00000000L;
const Win32_DWORD WS_OVERLAPPEDWINDOW = WS_OVERLAPPED | WS_CAPTION | WS_SYSMENU | WS_THICKFRAME | WS_MINIMIZEBOX | WS_MAXIMIZEBOX;
const Win32_DWORD WS_POPUP            = 0x80000000L;
const Win32_DWORD WS_POPUPWINDOW      = WS_POPUP | WS_BORDER | WS_SYSMENU;
const Win32_DWORD WS_SIZEBOX          = 0x00040000L;
const Win32_DWORD WS_SYSMENU          = 0x00080000L;
const Win32_DWORD WS_TABSTOP          = 0x00010000L;
const Win32_DWORD WS_THICKFRAME       = 0x00040000L;
const Win32_DWORD WS_TILED            = 0x00000000L;
const Win32_DWORD WS_TILEDWINDOW      = WS_OVERLAPPED | WS_CAPTION | WS_SYSMENU | WS_THICKFRAME | WS_MINIMIZEBOX | WS_MAXIMIZEBOX;
const Win32_DWORD WS_VISIBLE          = 0x10000000L;
const Win32_DWORD WS_VSCROLL          = 0x00200000L;

const Win32_UINT MB_OK = 0x00000000;
const Win32_UINT MB_OKCANCEL = 0x00000001;
const Win32_UINT MB_ABORTRETRYIGNORE = 0x00000002;
const Win32_UINT MB_YESNOCANCEL = 0x00000003;
const Win32_UINT MB_YESNO = 0x00000004;
const Win32_UINT MB_RETRYCANCEL = 0x00000005;
const Win32_UINT MB_CANCELTRYCONTINUE = 0x00000006;
const Win32_UINT MB_ICONHAND = 0x00000010;
const Win32_UINT MB_ICONQUESTION = 0x00000020;
const Win32_UINT MB_ICONEXCLAMATION = 0x00000030;
const Win32_UINT MB_ICONASTERISK = 0x00000040;
const Win32_UINT MB_USERICON = 0x00000080;
const Win32_UINT MB_ICONWARNING = MB_ICONEXCLAMATION;
const Win32_UINT MB_ICONERROR = MB_ICONHAND;
const Win32_UINT MB_ICONINFORMATION = MB_ICONASTERISK;
const Win32_UINT MB_ICONSTOP = MB_ICONHAND;

const GWL_WNDPROC @if(env::ARCH_32_BIT) = -4;
const GWL_HINSTANCE @if(env::ARCH_32_BIT) = -6;
const GWL_HWNDPARENT @if(env::ARCH_32_BIT) = -8;
const GWL_STYLE = -16;
const GWL_EXSTYLE = -20;
const GWL_USERDATA @if(env::ARCH_32_BIT) = -21;
const GWL_ID = -12;
const GWLP_WNDPROC = -4;
const GWLP_HINSTANCE = -6;
const GWLP_HWNDPARENT = -8;
const GWLP_USERDATA = -21;
const GWLP_ID = -12;

extern fn Win32_HDC beginPaint(Win32_HWND, Win32_LPPAINTSTRUCT) @cname("BeginPaint");
extern fn Win32_LRESULT callWindowProcW(Win32_WNDPROC lpPrevWndFunc, Win32_HWND hWnd, Win32_UINT msg, Win32_WPARAM wParam, Win32_LPARAM lParam) @cname("CallWindowProcW");
extern fn Win32_HWND createWindowExW(Win32_DWORD, Win32_LPCWSTR, Win32_LPCWSTR, Win32_DWORD, CInt, CInt, CInt, CInt, Win32_HWND, Win32_HMENU, Win32_HINSTANCE, Win32_LPVOID) @cname("CreateWindowExW");
extern fn Win32_LRESULT defWindowProcW(Win32_HWND, Win32_UINT, Win32_WPARAM, Win32_LPARAM) @cname("DefWindowProcW");
extern fn Win32_BOOL dispatchMessage(Win32_MSG* lpMsg) @cname("DispatchMessageW");
extern fn Win32_BOOL endPaint(Win32_HWND, Win32_LPPAINTSTRUCT) @cname("EndPaint");
extern fn Win32_BOOL getMessageW(Win32_LPMSG, Win32_HWND, Win32_UINT, Win32_UINT) @cname("GetMessageW");
extern fn Win32_BOOL getUpdateRect(Win32_HWND hWnd, Win32_LPRECT lpRect, Win32_BOOL bErase) @cname("GetUpdateRect");
extern fn Win32_LONG_PTR getWindowLongPtrW(Win32_HWND hWnd, CInt nIndex) @cname("GetWindowLongPtrW");
extern fn Win32_LONG getWindowLongW(Win32_HWND hWnd, CInt nIndex) @cname("GetWindowLongW");
extern fn Win32_HCURSOR loadCursorW(Win32_HINSTANCE instance, Win32_LPCWSTR cursorName) @cname("LoadCursorW");
extern fn Win32_HICON loadIconW(Win32_HINSTANCE instance, Win32_LPCWSTR iconName) @cname("LoadIconW");
extern fn int messageBoxW(Win32_HWND hWnd, Win32_LPCWSTR lpText, Win32_LPCWSTR lpCaption, Win32_UINT uType) @cname("MessageBoxW");
extern fn void postQuitMessage(CInt) @cname("PostQuitMessage");
extern fn Win32_ATOM registerClassExW(Win32_WNDCLASSEXW*) @cname("RegisterClassExW");
extern fn Win32_LONG_PTR setWindowLongPtrW(Win32_HWND hWnd, CInt nIndex, Win32_LONG_PTR dwNewLong) @cname("SetWindowLongPtrW");
extern fn Win32_LONG setWindowLongW(Win32_HWND hWnd, CInt nIndex, Win32_LONG dwNewLong) @cname("SetWindowLongW");
extern fn Win32_BOOL showWindow(Win32_HWND, CInt) @cname("ShowWindow");
extern fn Win32_BOOL translateMessage(Win32_MSG* lpMsg) @cname("TranslateMessage");
extern fn Win32_BOOL updateWindow(Win32_HWND) @cname("UpdateWindow");

macro getWindowLongPtr(Win32_HWND hWnd, CInt nIndex)
{
	$if env::ARCH_64_BIT:
		return getWindowLongPtrW(hWnd, nIndex);
	$else
		return getWindowLongW(hWnd, nIndex);
	$endif
}

macro setWindowLongPtr(Win32_HWND hWnd, CInt nIndex, dwNewLong)
{
	$if env::ARCH_64_BIT:
		return setWindowLongPtrW(hWnd, nIndex, dwNewLong);
	$else
		return setWindowLongW(hWnd, nIndex, dwNewLong);
	$endif
}