sys/windows: add various procedures

core/sys/windows/types.odin

@@ -96,6 +96,7 @@ LPPROCESS_INFORMATION :: ^PROCESS_INFORMATION
 PSECURITY_ATTRIBUTES :: ^SECURITY_ATTRIBUTES
 LPSECURITY_ATTRIBUTES :: ^SECURITY_ATTRIBUTES
 LPSTARTUPINFO :: ^STARTUPINFO
+LPTRACKMOUSEEVENT :: ^TRACKMOUSEEVENT
 VOID :: rawptr
 PVOID :: rawptr
 LPVOID :: rawptr
@@ -272,6 +273,13 @@ PAINTSTRUCT :: struct {
 	rgbReserved: [32]BYTE,
 }
 
+TRACKMOUSEEVENT :: struct {
+	cbSize: DWORD,
+	dwFlags: DWORD,
+	hwndTrack: HWND,
+	dwHoverTime: DWORD,
+}
+
 WIN32_FIND_DATAW :: struct {
 	dwFileAttributes: DWORD,
 	ftCreationTime: FILETIME,
@@ -645,6 +653,13 @@ MK_MBUTTON  :: 0x0010
 MK_XBUTTON1 :: 0x0020
 MK_XBUTTON2 :: 0x0040
 
+TME_HOVER     :: 0x00000001
+TME_LEAVE     :: 0x00000002
+TME_NONCLIENT :: 0x00000010
+TME_QUERY     :: 0x40000000
+TME_CANCEL    :: 0x80000000
+HOVER_DEFAULT :: 0xFFFFFFFF
+
 USER_TIMER_MAXIMUM :: 0x7FFFFFFF
 USER_TIMER_MINIMUM :: 0x0000000A
 

core/sys/windows/user32.odin

@@ -123,6 +123,11 @@ foreign user32 {
 	BeginPaint :: proc(hWnd: HWND, lpPaint: ^PAINTSTRUCT) -> HDC ---
 	EndPaint :: proc(hWnd: HWND, lpPaint: ^PAINTSTRUCT) -> BOOL ---
 
+	GetCapture :: proc() -> HWND ---
+	SetCapture :: proc(hWnd: HWND) -> HWND ---
+	ReleaseCapture :: proc() -> BOOL ---
+	TrackMouseEvent :: proc(lpEventTrack: LPTRACKMOUSEEVENT) -> BOOL ---
+
 	GetKeyState :: proc(nVirtKey: c_int) -> SHORT ---
 	GetAsyncKeyState :: proc(vKey: c_int) -> SHORT ---