1 files changed, 62 insertions, 0 deletions
diff --git a/platform/windows/os_windows.cpp b/platform/windows/os_windows.cpp
index 403159af7c..a2941dd43e 100644
--- a/platform/windows/os_windows.cpp
+++ b/platform/windows/os_windows.cpp
@@ -778,7 +778,69 @@ Error OS_Windows::move_to_trash(const String &p_path) {
 	return OK;
 }
 
+int OS_Windows::get_tablet_driver_count() const {
+	return tablet_drivers.size();
+}
+
+String OS_Windows::get_tablet_driver_name(int p_driver) const {
+	if (p_driver < 0 || p_driver >= tablet_drivers.size()) {
+		return "";
+	} else {
+		return tablet_drivers[p_driver].utf8().get_data();
+	}
+}
+
+String OS_Windows::get_current_tablet_driver() const {
+	return tablet_driver;
+}
+
+void OS_Windows::set_current_tablet_driver(const String &p_driver) {
+	bool found = false;
+	for (int i = 0; i < get_tablet_driver_count(); i++) {
+		if (p_driver == get_tablet_driver_name(i)) {
+			found = true;
+		}
+	}
+	if (found) {
+		if (DisplayServerWindows::get_singleton()) {
+			((DisplayServerWindows *)DisplayServerWindows::get_singleton())->_update_tablet_ctx(tablet_driver, p_driver);
+		}
+		tablet_driver = p_driver;
+	} else {
+		ERR_PRINT("Unknown tablet driver " + p_driver + ".");
+	}
+}
+
 OS_Windows::OS_Windows(HINSTANCE _hInstance) {
+	//Note: Wacom WinTab driver API for pen input, for devices incompatible with Windows Ink.
+	HMODULE wintab_lib = LoadLibraryW(L"wintab32.dll");
+	if (wintab_lib) {
+		DisplayServerWindows::wintab_WTOpen = (WTOpenPtr)GetProcAddress(wintab_lib, "WTOpenW");
+		DisplayServerWindows::wintab_WTClose = (WTClosePtr)GetProcAddress(wintab_lib, "WTClose");
+		DisplayServerWindows::wintab_WTInfo = (WTInfoPtr)GetProcAddress(wintab_lib, "WTInfoW");
+		DisplayServerWindows::wintab_WTPacket = (WTPacketPtr)GetProcAddress(wintab_lib, "WTPacket");
+		DisplayServerWindows::wintab_WTEnable = (WTEnablePtr)GetProcAddress(wintab_lib, "WTEnable");
+
+		DisplayServerWindows::wintab_available = DisplayServerWindows::wintab_WTOpen && DisplayServerWindows::wintab_WTClose && DisplayServerWindows::wintab_WTInfo && DisplayServerWindows::wintab_WTPacket && DisplayServerWindows::wintab_WTEnable;
+	}
+
+	if (DisplayServerWindows::wintab_available) {
+		tablet_drivers.push_back("wintab");
+	}
+
+	//Note: Windows Ink API for pen input, available on Windows 8+ only.
+	HMODULE user32_lib = LoadLibraryW(L"user32.dll");
+	if (user32_lib) {
+		DisplayServerWindows::win8p_GetPointerType = (GetPointerTypePtr)GetProcAddress(user32_lib, "GetPointerType");
+		DisplayServerWindows::win8p_GetPointerPenInfo = (GetPointerPenInfoPtr)GetProcAddress(user32_lib, "GetPointerPenInfo");
+
+		DisplayServerWindows::winink_available = DisplayServerWindows::win8p_GetPointerType && DisplayServerWindows::win8p_GetPointerPenInfo;
+	}
+
+	if (DisplayServerWindows::winink_available) {
+		tablet_drivers.push_back("winink");
+	}
+
 	force_quit = false;
 
 	hInstance = _hInstance;