CtrlItemSlot Can't Find GuiInputEvent Before An Item Was Dragged To It

[tech-Yin]

I find that i can't use the signal 'gui_input' to handle the input event of an ctrl item slot(i want to create an mouse menu to make the control of inventory easier).
If it is designed? Is there anyohter method to handle the mouse click on the ctrl item slot?

[peter-kish]

I gave this a try, but it worked properly for me.
I modified the inventory_grid_transfer.tscn example scene and added the following to the _ready() function:

%CtrlItemSlot.gui_input.connect(func(event: InputEvent):
    if event is InputEventMouseButton:
        print("Clicked: %d" % (event as InputEventMouseButton).button_index)
)

Can you provide a simple example scene which demonstrates where this doesn't work?

[tech-Yin]

I create a _gui_input to handled input_events, but it can't do that before I drag a item to it.
no matter what mouse_button I click, it has no reply.

For example, I add this code into CtrlItemSlot to check problem.
I can make sure that it do nothing when I click in it.

func _gui_input(event: InputEvent) -> void:
        print(event)
	if !(event is InputEventMouseButton):
		return

	var mb_event: InputEventMouseButton = event
	if !mb_event.pressed:
		return
	if mb_event.button_index == MOUSE_BUTTON_LEFT:
		if mb_event.double_click:
			activated.emit()
	clicked.emit(mb_event.position, mb_event.button_index)

uhh, I am new here and my English can't support me to communite with others smoothly.
If a vedio can provide example?
...
Is this common?

[peter-kish]

Hmm, I still wasn't able to reproduce the problem. Again, I modified the inventory_grid_transfer.tscn example and set the script for the CtrlItemSlot to:

extends CtrlItemSlot
signal activated
signal clicked

func _gui_input(event: InputEvent) -> void:
    print(event)
    if !(event is InputEventMouseButton):
        return

    var mb_event: InputEventMouseButton = event
    if !mb_event.pressed:
        return
    if mb_event.button_index == MOUSE_BUTTON_LEFT:
        if mb_event.double_click:
            activated.emit()
    clicked.emit(mb_event.position, mb_event.button_index)

and I'm getting all the events printed:

InputEventMouseMotion: button_mask=0, position=((30.0, 12.0)), relative=((0.0, 0.0)), velocity=((-6.661441, -2.22048)), pressure=0.00, tilt=((0.0, 0.0)), pen_inverted=(false)
InputEventMouseButton: button_index=1, mods=none, pressed=true, canceled=false, position=((30.0, 12.0)), button_mask=1, double_click=false
InputEventMouseMotion: button_mask=1 (Left Mouse Button), position=((31.0, 12.0)), relative=((1.0, 0.0)), velocity=((0.0, 0.0)), pressure=1.00, tilt=((0.0, 0.0)), pen_inverted=(false)
InputEventMouseButton: button_index=1, mods=none, pressed=false, canceled=false, position=((31.0, 12.0)), button_mask=0, double_click=false
InputEventMouseButton: button_index=1, mods=none, pressed=true, canceled=false, position=((31.0, 12.0)), button_mask=1, double_click=false
...

If a vedio can provide example?
...
Is this common?

Usually people create a Minimal reproducible example, zip it and drop it in a comment. That way I can analyze the issue easily without going through someones complex project.