I cannot figure out how to use the application launcher

[Superfluous J]

Can someone explain to me - in simple term with examples - exactly how to get a button on the toolbar that I can click and "do something"?

For a concrete example, I'm trying to code a very simple first-step version of a mod that, when you click a button in the toolbar in map mode, it drops a maneuver node 5 minutes into the future. I've got the "drop a maneuver node 5 minutes into the future" function written, but I'm running out of hair to pull out trying to even get a button to show up on the application launcher.

Please assume I am a complete moron when answering my questions. Do not assume though that I don't know how to search. Don't point me at a web page with the API. It confuses me. Don't tell me to look at other people's source code. I have. I've even copied it and pasted it into my mod. I can't get it to work. I will accept that I'm too dumb to figure it out myself but I will not accept that I haven't tried hard enough.

[Superfluous J]

Maybe the code I have would help (did I mention I'm dumb?). Here's the entire cs file. It's not that big and hopefully I'm just missing something simple. It complies fine, and I'm not seeing anything in the output_log.txt implying an error, but I don't know exactly where to look. If it matters, I'm trying to do this in 1.2

using KSP.UI.Screens; // Unsure if needed
using System;
using System.Collections; // Unsure if needed
using System.Collections.Generic;
using System.Linq;
using System.Text;
using UnityEngine;

namespace DropAManeuverNode
{
	public class DAMN_Basic : MonoBehaviour
    {
        ApplicationLauncherButton ToolbarButton;
        public void Start()
        {
            GameEvents.onGUIApplicationLauncherReady.Add(OnGUIApplicationLauncherReady);
        }

        public void DropAManeuverNode_5Min()
        {
            FlightGlobals.ActiveVessel.patchedConicSolver.AddManeuverNode(Planetarium.GetUniversalTime() + (5.0 * 60.0));
        }

        private void OnGUIApplicationLauncherReady()
        {
            if (ToolbarButton == null)
            {
                ToolbarButton = ApplicationLauncher.Instance.AddModApplication(DropAManeuverNode_5Min, null, null, null, null, null, ApplicationLauncher.AppScenes.MAPVIEW, GameDatabase.Instance.GetTexture("DropAManeuverNode/Toolbar", false));
            }
        }
    }
}

 

[severedsolo]

Try adding

    [KSPAddon(KSPAddon.Startup.Flight, false)]

before your class declaration... at the moment your Addon is never being started, because your not telling KSP to.

Also: don't know if this is a hard and fast rule, but I usually find event listeners work better in Awake() not Start().

Edited September 22, 2016 by severedsolo

[Superfluous J]

17 minutes ago, severedsolo said:

Try adding

    [KSPAddon(KSPAddon.Startup.Flight, false)]

before your class declaration... at the moment your Addon is never being started, because your not telling KSP to.

That worked! Thank you. So I actually had the toolbar stuff correct. Who'd'a'thunk't

17 minutes ago, severedsolo said:

Also: don't know if this is a hard and fast rule, but I usually find event listeners work better in Awake() not Start().

It doesn't seem to matter which one it's in, they both work. So I'll leave it in Awake() for now.

The "Like" button on the forum isn't enough to express my thanks.