Added my InputEventKey implementation, to tailor the logic of action_match to my needs.

SCsub

@@ -3,3 +3,4 @@ Import('env')
 env.add_source_files(env.modules_sources,"register_types.cpp")
 
 env.add_source_files(env.modules_sources,"touch_button.cpp")
+env.add_source_files(env.modules_sources,"bs_input_event_key.cpp")

bs_input_event_key.cpp

@@ -0,0 +1,42 @@
+#include "bs_input_event_key.h"
+
+void BSInputEventKey::from_input_event_key(const Ref<InputEventKey> event) {
+	set_device(event->get_device());
+
+	set_shift(event->get_shift());
+	set_alt(event->get_alt());
+	set_control(event->get_control());
+	set_metakey(event->get_metakey());
+	set_command(event->get_command());
+
+	set_pressed(event->is_pressed());
+	set_scancode(event->get_scancode());
+	set_unicode(event->get_unicode());
+	set_echo(event->is_echo());
+}
+
+bool BSInputEventKey::action_match(const Ref<InputEvent> &p_event, bool *p_pressed, float *p_strength, float p_deadzone) const {
+
+	Ref<InputEventKey> key = p_event;
+	if (key.is_null())
+		return false;
+
+	uint32_t code = get_scancode_with_modifiers();
+	uint32_t event_code = key->get_scancode_with_modifiers();
+
+	bool match = code == event_code;
+	if (match) {
+		if (p_pressed != NULL)
+			*p_pressed = key->is_pressed();
+		if (p_strength != NULL)
+			*p_strength = (p_pressed != NULL && *p_pressed) ? 1.0f : 0.0f;
+	}
+	return match;
+}
+
+BSInputEventKey::BSInputEventKey() {
+}
+
+void BSInputEventKey::_bind_methods() {
+	ClassDB::bind_method(D_METHOD("from_input_event_key", "event"), &BSInputEventKey::from_input_event_key);
+}

bs_input_event_key.h

@@ -0,0 +1,19 @@
+#ifndef BS_INPUT_EVENT_KEY_H
+#define BS_INPUT_EVENT_KEY_H
+
+#include "core/os/input_event.h"
+
+class BSInputEventKey : public InputEventKey {
+	GDCLASS(BSInputEventKey, InputEventKey);
+
+public:
+	void from_input_event_key(const Ref<InputEventKey> p_event);
+	virtual bool action_match(const Ref<InputEvent> &p_event, bool *p_pressed, float *p_strength, float p_deadzone) const;
+
+	BSInputEventKey();
+
+protected:
+	static void _bind_methods();
+};
+
+#endif

register_types.cpp

@@ -1,9 +1,11 @@
 #include "register_types.h"
 
 #include "touch_button.h"
+#include "bs_input_event_key.h"
 
 void register_ui_extensions_types() {
 	ClassDB::register_class<TouchButton>();
+	ClassDB::register_class<BSInputEventKey>();
 }	
 
 void unregister_ui_extensions_types() {