private void toolStripContainer1_KeyDown(object sender, KeyEventArgs e)
{
if (e.KeyCode == Keys.P && e.Control)
{
var model = new PopupListModel();
// Dummy items - pass model into constructor?
for (int loop = 1; loop <= 99; loop++)
{
model.Items.Add(new PopupListItem($"Item {loop}", $"Hint {loop}"));
}
var popup = new PopupList(model);
popup.Show(this);
if (popup.DialogResult == DialogResult.OK)
{
}
}
}
public PopupList(PopupListModel model, int visibleItemCount = 20)
{
Model = model;
VisibleItemCount = visibleItemCount;
InitializeComponent();
listBox1.DrawMode = DrawMode.OwnerDrawFixed;
listBox1.DrawItem += (object sender, DrawItemEventArgs e) => {
// e.ForeColor and e.BackColor will be set based on selection status
// We can amend them if we do a bit of the drawing ourselves and have
// chosen alternative colors
var foreColor = e.ForeColor;
if ((e.State & DrawItemState.Selected) == DrawItemState.Selected)
{
// Use a custom selection colour
Color selectionForeColor;
if (ThemeManager.TryAndGet(listBox1, "SelectionForeColor", out selectionForeColor))
{
foreColor = selectionForeColor;
}
Color selectionBackColor;
if (ThemeManager.TryAndGet(listBox1, "SelectionBackColor", out selectionBackColor))
{
// Use a custom selection colour
using (var brush = new SolidBrush(selectionBackColor))
{
e.Graphics.FillRectangle(brush, e.Bounds);
}
}
else
{
// Let the system deal with highlighting
e.DrawBackground();
}
}
else
{
// Let the system deal with highlighting
e.DrawBackground();
}
// I don't think we want to do this - it has no value in this list control as we
// dispose as soon as an item is clicked on (and by that, receives focus)
//e.DrawFocusRectangle();
using (var brush = new SolidBrush(foreColor))
{
var item = (PopupListItem)listBox1.Items[e.Index];
var value = item.Value;
e.Graphics.DrawString(value, e.Font, brush, e.Bounds);
var hint = item.Hint;
if (!string.IsNullOrEmpty(hint))
{
var widthValue = Math.Ceiling(e.Graphics.MeasureString(value, e.Font).Width);
var widthHint = Math.Ceiling(e.Graphics.MeasureString(hint, e.Font).Width);
if (e.Bounds.Width > widthValue + widthHint)
{
var hintBounds = new Rectangle((int)(e.Bounds.X + e.Bounds.Width - widthHint), e.Bounds.Y, (int)widthHint, e.Bounds.Height);
e.Graphics.DrawString(hint, e.Font, brush, hintBounds);
}
}
}
};
UpdateList();
// Set a default in case any creative exit routes are discovered
DialogResult = DialogResult.Cancel;
}
