Tool Tip

Drop one on a form and every control on it gains BinaryToolTipText, BinaryToolTipTitle, BinaryToolTipIcon and BinaryToolTipStyle properties "on binaryToolTip1" in the Properties window; in code, call SetBinaryToolTipText and its companions with the control.

When tips show

A control shows a tip once it has text. The tip appears when the pointer has rested on the control for ToolTipHoverDelay, just below the pointer, and closes after ToolTipHideDelay, or as soon as the pointer moves, leaves the control or presses a button. Moving on to another control within ToolTipReshowDelay shows that control's tip at once. A tip that would run off the screen is moved above the pointer or to the left.

Appearance

Each control's tip is a BinaryToolTipStyle.Standard rectangle or a BinaryToolTipStyle.BalloonType balloon (ToolTipTipStyle, or SetBinaryToolTipStyle per control). The colours, fonts, shadow and wrapping are set once on the component and shared by all its tips: BackColor, BorderColor, TitleForeColor, TextForeColor, ToolTipTextFont, ShadowOffset, ShadowColor, CustomWidth.

Balloon tips on a customer form's fields, in a cool blue.

using System.Drawing;
using System.Windows.Forms;
using Binarymission.WinForms.Controls.Popups;

public class CustomerForm : Form
{
    private readonly BinaryToolTip _tips;
    private readonly TextBox _vatNumber = new TextBox { Location = new Point(120, 16), Width = 160 };
    private readonly TextBox _creditLimit = new TextBox { Location = new Point(120, 48), Width = 100 };

    public CustomerForm()
    {
        _tips = new BinaryToolTip
        {
            ToolTipTipStyle = BinaryToolTipStyle.BalloonType,
            BackColor = Color.AliceBlue,
            BorderColor = Color.SteelBlue,
            TitleForeColor = Color.MidnightBlue,
            CustomWidth = 240,
            ToolTipHoverDelay = 400
        };

        _tips.SetBinaryToolTipTitle(_vatNumber, "VAT number");
        _tips.SetBinaryToolTipText(_vatNumber, "The customer's VAT registration number, for example GB123456789. Leave blank for private customers.");
        _tips.SetBinaryToolTipIcon(_vatNumber, SystemIcons.Information.ToBitmap());

        _tips.SetBinaryToolTipTitle(_creditLimit, "Credit limit");
        _tips.SetBinaryToolTipText(_creditLimit, "The most the customer may owe at any time, in pounds sterling.");

        Controls.Add(_vatNumber);
        Controls.Add(_creditLimit);
    }
}