From ce37a83df37ec58a481738124e7a501d0aa2d16b Mon Sep 17 00:00:00 2001
From: "Stanislav Ch. Nikolov" <stanislav.ltb@gmail.com>
Date: Tue, 1 Sep 2026 22:42:25 +0300
Subject: [PATCH] Add support for advanced pen & pointer win32 functions

---
 core/sys/windows/user32.odin | 95 ++++++++++++++++++++++++++++++++++++
 1 file changed, 95 insertions(+)

diff --git a/core/sys/windows/user32.odin b/core/sys/windows/user32.odin
index d2f54b127..afce7c01f 100644
--- a/core/sys/windows/user32.odin
+++ b/core/sys/windows/user32.odin
@@ -346,6 +346,10 @@ foreign user32 {
 	GetScrollInfo   :: proc(hwnd: HWND, nBar: c_int, lpsi: ^SCROLLINFO) -> BOOL ---
 	ShowScrollBar   :: proc(hwnd: HWND, nBar: c_int, bShow: BOOL) -> BOOL ---
 	EnableScrollBar :: proc(hwnd: HWND, wSBflags: UINT, wArrows: UINT) -> BOOL ---
+
+	EnableMouseInPointer :: proc(fEnable: BOOL) ---
+	GetPointerInfo :: proc(pointerId: UINT, pointerInfo: ^POINTER_INFO) -> BOOL ---
+	GetPointerPenInfo :: proc(pointerId: UINT, penInfo: ^POINTER_PEN_INFO) -> BOOL ---
 }
 
 CreateWindowW :: #force_inline proc "system" (
@@ -970,6 +974,97 @@ ESB_DISABLE_DOWN    :: 0x0002
 ESB_DISABLE_LTUP    :: ESB_DISABLE_LEFT
 ESB_DISABLE_RTDN    :: ESB_DISABLE_RIGHT
 
+POINTER_INPUT_TYPE :: enum DWORD {
+	PT_POINTER  = 1,
+	PT_TOUCH    = 2,
+	PT_PEN      = 3,
+	PT_MOUSE    = 4,
+	PT_TOUCHPAD = 5,
+}
+
+POINTER_BUTTON_CHANGE_TYPE :: enum {
+  NONE,
+  FIRSTBUTTON_DOWN,
+  FIRSTBUTTON_UP,
+  SECONDBUTTON_DOWN,
+  SECONDBUTTON_UP,
+  THIRDBUTTON_DOWN,
+  THIRDBUTTON_UP,
+  FOURTHBUTTON_DOWN,
+  FOURTHBUTTON_UP,
+  FIFTHBUTTON_DOWN,
+  FIFTHBUTTON_UP
+}
+
+PointerFlag :: enum {
+	new             =  0,
+	in_rage         =  1,
+	in_contact      =  2,
+	first_button    =  4,
+	second_button   =  5,
+	third_button    =  6,
+	fourth_button   =  7,
+	fifth_button    =  8,
+	primary         = 13,
+	confidence      = 14,
+	canceled        = 15,
+	down            = 16,
+	update          = 17,
+	up              = 18,
+	wheel           = 19,
+	hwheel          = 20,
+	capture_changed = 21,
+	has_transform   = 22,
+}
+
+PenFlag :: enum {
+	barrel   = 0,
+	inverted = 1,
+	eraser   = 2,
+}
+
+PenMask :: enum {
+	pressure = 0,
+	rotation = 1,
+	tiltX    = 2,
+	tiltY    = 3,
+}
+
+POINTER_INFO :: struct {
+	pointerType: POINTER_INPUT_TYPE,
+	pointerId: UINT,
+	frameId: UINT,
+	pointerFlags: bit_set[PointerFlag; UINT],
+	sourceDevice: HANDLE,
+	hwndTarget: HWND,
+	ptPixelLocation: POINT,
+	ptHimetricLocation: POINT,
+	ptPixelLocationRaw: POINT,
+	ptHimetricLocationRaw: POINT,
+	dwTime: DWORD,
+	historyCount: UINT,
+	InputData: INT32,
+	dwKeyStates: DWORD,
+	PerformanceCount: UINT,
+	ButtonChangeType: POINTER_BUTTON_CHANGE_TYPE,
+}
+
+POINTER_PEN_INFO :: struct {
+	pointerInfo: POINTER_INFO,
+	penFlags: bit_set[PenFlag; UINT],
+	penMask: bit_set[PenMask; UINT],
+
+	// pressure normalized to a range between 0 and 1024. 0 if the device does not report pressure.
+	pressure: UINT,
+
+	// clockwise rotation, or twist, of the pointer normalized in a range of 0 to 359
+	rotation: UINT,
+
+	// -90 to +90; positive value indicating a tilt toward the user
+	tiltX: INT,
+	tiltY: INT,
+}
+
 // Command constants for GetWindow
 GW_HWNDFIRST        :: 0
 GW_HWNDLAST         :: 1