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/*
KeePass Password Safe - The Open-Source Password Manager
Copyright (C) 2003-2025 Dominik Reichl <dominik.reichl@t-online.de>
This program is free software; you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation; either version 2 of the License, or
(at your option) any later version.
This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
along with this program; if not, write to the Free Software
Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
*/
using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Drawing;
using System.Text;
using System.Windows.Forms;
namespace KeePass.UI
{
public sealed class PromptedTextBox : TextBox
{
private const int WM_PAINT = 0x000F;
private string m_strPrompt = string.Empty;
[DefaultValue("")]
public string PromptText
{
get { return m_strPrompt; }
set
{
if(value == null) throw new ArgumentNullException("value");
m_strPrompt = value;
Invalidate();
}
}
protected override void WndProc(ref Message m)
{
base.WndProc(ref m);
if((m.Msg == WM_PAINT) && !this.Focused && (this.TextLength == 0) &&
(m_strPrompt.Length > 0))
{
TextFormatFlags tff = (TextFormatFlags.EndEllipsis |
TextFormatFlags.NoPrefix | TextFormatFlags.Left |
TextFormatFlags.Top | TextFormatFlags.NoPadding);
using(Graphics g = this.CreateGraphics())
{
Rectangle rect = this.ClientRectangle;
rect.Offset(1, 1);
TextRenderer.DrawText(g, m_strPrompt, this.Font,
rect, SystemColors.GrayText, this.BackColor, tff);
}
}
}
}
}
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