gistfile1.txt

internal class UIHoverImageButton : UIImageButton
    {
        internal string hoverText;

        public UIHoverImageButton(Texture2D texture, string hoverText) : base(texture)
        {
            this.hoverText = hoverText;
        }

        protected override void DrawSelf(SpriteBatch spriteBatch)
        {
            base.DrawSelf(spriteBatch);
            if (IsMouseHovering)
            {
                Main.hoverItemName = hoverText;
            }
        }
    }
    
    Texture2D duskButtonTexture = ModLoader.GetTexture("TrivaxysStuff/UI/DuskButton");
			UIHoverImageButton duskButton = new UIHoverImageButton(duskButtonTexture, "whatever string here");
			duskButton.Left.Set(8, 0f);
			duskButton.Top.Set(8, 0f);
			duskButton.Width.Set(22, 0f);
			duskButton.Height.Set(22, 0f);
			duskButton.OnClick += new MouseEvent(DuskButtonClicked);
			MainPanel.Append(duskButton);