Post It Note

A note is a Form of its own. Create it in code with the window it belongs to, set its text and look, and call Form.Show. It has no parameterless constructor, so it is not dropped on a designer surface.

The parts of a note

• Title bar. The built-in title bar (IsDefaultTitlebarVisible) is 28 logical pixels tall, with a command icon at the left (PostItNoteCommandBarInvokeRequested), a close icon at the right (PostItNoteCloseRequested) and an optional Pin in the middle. Turn it off for a thin 8-pixel strip instead, or supply your own with Titlebar. Any of them drags the note.
• Text area. A rich text box holding NoteText, in DefaultInputTextBoxFont. Hide it with IsDefaultInputTextBoxVisible to put controls of your own on the note.
• Status bar. One line of StatusbarText along the bottom (IsStatusBarVisible), beside a gripper that resizes the note.

Behaviour

The close icon does not close the note: it raises PostItNoteCloseRequested, and your handler decides – confirm, then call Form.Close. While FollowsParentWindow is on, the note hides when its window is minimised or hidden and comes back with it. InactiveOpacity fades notes that are not being worked in.

Appearance

NoteTheme sets the background and both title bars' colours in one go; set it first, then adjust single colours. A new note starts with sample text in the text area and status bar – replace both.

A reminder note beside a customer record, removed when the user confirms its close icon.

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

private void OnAddNoteClick(object sender, EventArgs e)
{
    PostItNote note = new PostItNote(this)
    {
        NoteTheme = PostItNoteTheme.Blue,
        Pin = PostItNotePin.Red,
        NoteText = "Call back about the overdue invoice INV-20431.",
        StatusbarText = "Added " + DateTime.Now.ToString("d MMM, HH:mm"),
        TitlebarTooltip = "Drag to move",
        InactiveOpacity = 0.85,
        Size = new Size(240, 200),
        StartPosition = FormStartPosition.Manual,
        Location = new Point(Right - 260, Top + 80)
    };

    note.PostItNoteCloseRequested += (s, args) =>
    {
        if (MessageBox.Show(note, "Remove this note?", "Notes", MessageBoxButtons.YesNo) == DialogResult.Yes)
        {
            note.Close();
        }
    };

    note.Show(this);
}