Adding some proc bindings, struct definitions, and constant values.

core/sys/windows/kernel32.odin

@@ -238,6 +238,7 @@ foreign kernel32 {
 		bInitialState: BOOL,
 		lpName: LPCWSTR,
 	) -> HANDLE ---
+	ResetEvent :: proc(hEvent: HANDLE) -> BOOL ---
 	WaitForMultipleObjects :: proc(
 		nCount: DWORD,
 		lpHandles: ^HANDLE,
@@ -266,6 +267,17 @@ foreign kernel32 {
 	HeapReAlloc :: proc(hHeap: HANDLE, dwFlags: DWORD, lpMem: LPVOID, dwBytes: SIZE_T) -> LPVOID ---
 	HeapFree :: proc(hHeap: HANDLE, dwFlags: DWORD, lpMem: LPVOID) -> BOOL ---
 
+	ReadDirectoryChangesW :: proc(
+		hDirectory: HANDLE,
+		lpBuffer: LPVOID,
+		nBufferLength: DWORD,
+		bWatchSubtree: BOOL,
+		dwNotifyFilter: DWORD,
+		lpBytesReturned: LPDWORD,
+		lpOverlapped: LPOVERLAPPED,
+		lpCompletionRoutine: LPOVERLAPPED_COMPLETION_ROUTINE,
+	) -> BOOL ---
+
 	InitializeSRWLock          :: proc(SRWLock: ^SRWLOCK) ---
 	AcquireSRWLockExclusive    :: proc(SRWLock: ^SRWLOCK) ---
 	TryAcquireSRWLockExclusive :: proc(SRWLock: ^SRWLOCK) -> BOOL ---

core/sys/windows/types.odin

@@ -164,6 +164,21 @@ FILE_GENERIC_ALL: DWORD : 0x10000000
 FILE_GENERIC_EXECUTE: DWORD : 0x20000000
 FILE_GENERIC_READ: DWORD : 0x80000000
 
+FILE_ACTION_ADDED            :: 0x00000001
+FILE_ACTION_REMOVED          :: 0x00000002
+FILE_ACTION_MODIFIED         :: 0x00000003
+FILE_ACTION_RENAMED_OLD_NAME :: 0x00000004
+FILE_ACTION_RENAMED_NEW_NAME :: 0x00000005
+
+FILE_NOTIFY_CHANGE_FILE_NAME   :: 0x00000001
+FILE_NOTIFY_CHANGE_DIR_NAME    :: 0x00000002
+FILE_NOTIFY_CHANGE_ATTRIBUTES  :: 0x00000004
+FILE_NOTIFY_CHANGE_SIZE        :: 0x00000008
+FILE_NOTIFY_CHANGE_LAST_WRITE  :: 0x00000010
+FILE_NOTIFY_CHANGE_LAST_ACCESS :: 0x00000020
+FILE_NOTIFY_CHANGE_CREATION    :: 0x00000040
+FILE_NOTIFY_CHANGE_SECURITY    :: 0x00000100
+
 CREATE_NEW: DWORD : 1
 CREATE_ALWAYS: DWORD : 2
 OPEN_ALWAYS: DWORD : 4
@@ -1365,6 +1380,13 @@ FILE_END_OF_FILE_INFO :: struct {
 	EndOfFile: LARGE_INTEGER,
 }
 
+FILE_NOTIFY_INFORMATION :: struct {
+	next_entry_offset: DWORD,
+	action:            DWORD,
+	file_name_length:  DWORD,
+	file_name:         [1]WCHAR,
+}
+
 REPARSE_DATA_BUFFER :: struct {
 	ReparseTag: c_uint,
 	ReparseDataLength: c_ushort,
@@ -1509,6 +1531,12 @@ OVERLAPPED :: struct {
 	hEvent: HANDLE,
 }
 
+LPOVERLAPPED_COMPLETION_ROUTINE :: #type proc "stdcall" (
+	dwErrorCode: DWORD,
+	dwNumberOfBytesTransfered: DWORD,
+	lpOverlapped: LPOVERLAPPED,
+)
+
 ADDRESS_MODE :: enum c_int {
 	AddrMode1616,
 	AddrMode1632,

core/sys/windows/user32.odin

@@ -105,6 +105,7 @@ foreign user32 {
 	GetWindowRect :: proc(hWnd: HWND, lpRect: LPRECT) -> BOOL ---
 	GetClientRect :: proc(hWnd: HWND, lpRect: LPRECT) -> BOOL ---
 	ClientToScreen :: proc(hWnd: HWND, lpPoint: LPPOINT) -> BOOL ---
+	ScreenToClient :: proc(hWnd: HWND, lpPoint: LPPOINT) -> BOOL ---
 	SetWindowPos :: proc(
 		hWnd: HWND,
 		hWndInsertAfter: HWND,
@@ -155,6 +156,11 @@ foreign user32 {
 	MessageBoxW :: proc(hWnd: HWND, lpText: LPCWSTR, lpCaption: LPCWSTR, uType: UINT) -> c_int ---
 	MessageBoxExA :: proc(hWnd: HWND, lpText: LPCSTR, lpCaption: LPCSTR, uType: UINT, wLanguageId: WORD) -> c_int ---
 	MessageBoxExW :: proc(hWnd: HWND, lpText: LPCWSTR, lpCaption: LPCWSTR, uType: UINT, wLanguageId: WORD) -> c_int ---
+
+	ClipCursor :: proc(lpRect: LPRECT) -> BOOL ---
+	GetCursorPos :: proc(lpPoint: LPPOINT) -> BOOL ---
+	SetCursorPos :: proc(X: c_int, Y: c_int) -> BOOL ---
+	SetCursor :: proc(hCursor: HCURSOR) -> HCURSOR ---
 }
 
 CreateWindowA :: #force_inline proc "stdcall" (