Source/Office2007Form/SystemCaptionItem.cs

这里只显示每个文件的开头 60 行。登录后可以解锁完整代码。

微信扫码关注公众号，代码整理好后第一时间通知你。

using System;
using System.Text;
using System.Drawing;
using System.ComponentModel;
using System.Windows.Forms;

namespace DevComponents.DotNetBar
{
    /// <summary>
    /// Represents an item that provides system buttons displayed on form caption.
    /// </summary>
    public class SystemCaptionItem : MDISystemItem
    {
        #region Private Variables
        private bool m_MinimizeVisible = true;
        private bool m_RestoreMaximizeVisible = true;
        private bool m_CloseVisible = true;
        private bool m_HelpVisible = false;
        private bool m_GlassEnabled = false;
        #endregion

        #region Internal Implementation
        /// <summary>
        /// Gets the default size of the system buttons.
        /// </summary>
        /// <returns></returns>
        internal override Size GetButtonSize()
        {
            Size s = System.Windows.Forms.SystemInformation.CaptionButtonSize;
            if (System.Environment.OSVersion.Version.Major < 6 && this.ContainerControl is RibbonStrip)
                s = new Size(25, 25);
            if (System.Environment.OSVersion.Version.Major >= 6 && s.Height == 19 && this.Parent is CaptionItemContainer)
                s.Height += 3;
            return s;
        }

        public override void Paint(ItemPaintArgs pa)
        {
            if (this.SuspendLayout)
                return;

            if (_QueryIconOnPaint && pa.ContainerControl!=null)
            {
                Form parentForm = pa.ContainerControl.FindForm();
                if (parentForm != null)
                {
                    this.SetIcon(parentForm.Icon);
                }
            }

            m_GlassEnabled = pa.GlassEnabled;

            if (pa.Renderer != null)
                pa.Renderer.DrawSystemCaptionItem(new SystemCaptionItemRendererEventArgs(pa.Graphics, this, pa.GlassEnabled));
            else
                base.Paint(pa);
        }

        protected override bool ShowToolTips
        {