sys/windows: add several procedures and macros

core/sys/windows/types.odin

@@ -707,6 +707,23 @@ MK_MBUTTON  :: 0x0010
 MK_XBUTTON1 :: 0x0020
 MK_XBUTTON2 :: 0x0040
 
+// Value for rolling one detent
+WHEEL_DELTA :: 120
+
+// Setting to scroll one page for SPI_GET/SETWHEELSCROLLLINES
+WHEEL_PAGESCROLL :: max(UINT)
+
+// XButton values are WORD flags
+XBUTTON1 :: 0x0001
+XBUTTON2 :: 0x0002
+// Were there to be an XBUTTON3, its value would be 0x0004
+
+MAPVK_VK_TO_VSC    :: 0
+MAPVK_VSC_TO_VK    :: 1
+MAPVK_VK_TO_CHAR   :: 2
+MAPVK_VSC_TO_VK_EX :: 3
+MAPVK_VK_TO_VSC_EX :: 4
+
 TME_HOVER     :: 0x00000001
 TME_LEAVE     :: 0x00000002
 TME_NONCLIENT :: 0x00000010

core/sys/windows/user32.odin

@@ -131,6 +131,9 @@ foreign user32 {
 	GetKeyState :: proc(nVirtKey: c_int) -> SHORT ---
 	GetAsyncKeyState :: proc(vKey: c_int) -> SHORT ---
 
+	MapVirtualKeyA :: proc(uCode: UINT, uMapType: UINT) -> UINT ---
+	MapVirtualKeyW :: proc(uCode: UINT, uMapType: UINT) -> UINT ---
+
 	SetWindowsHookExA :: proc(idHook: c_int, lpfn: HOOKPROC, hmod: HINSTANCE, dwThreadId: DWORD) -> HHOOK ---
 	SetWindowsHookExW :: proc(idHook: c_int, lpfn: HOOKPROC, hmod: HINSTANCE, dwThreadId: DWORD) -> HHOOK ---
 	UnhookWindowsHookEx :: proc(hhk: HHOOK) -> BOOL ---
@@ -228,6 +231,22 @@ when ODIN_ARCH == .amd64 {
 	SetWindowLongPtrW :: GetWindowLongW
 }
 
-GET_SC_WPARAM :: #force_inline proc(wparam: WPARAM) -> i32 {
-	return i32(wparam) & 0xFFF0
+GET_SC_WPARAM :: #force_inline proc "contextless" (wParam: WPARAM) -> c_int {
+	return c_int(wParam) & 0xFFF0
+}
+
+GET_WHEEL_DELTA_WPARAM :: #force_inline proc "contextless" (wParam: WPARAM) -> c_short {
+	return cast(c_short)HIWORD(cast(DWORD)wParam)
+}
+
+GET_KEYSTATE_WPARAM :: #force_inline proc "contextless" (wParam: WPARAM) -> WORD {
+	return LOWORD(cast(DWORD)wParam)
+}
+
+GET_NCHITTEST_WPARAM :: #force_inline proc "contextless" (wParam: WPARAM) -> c_short {
+	return cast(c_short)LOWORD(cast(DWORD)wParam)
+}
+
+GET_XBUTTON_WPARAM ::  #force_inline proc "contextless" (wParam: WPARAM) -> WORD {
+	return HIWORD(cast(DWORD)wParam)
 }