加载本地电脑的图片

最新推荐文章于 2024-09-23 14:30:59 发布

转载最新推荐文章于 2024-09-23 14:30:59 发布 · 616 阅读

本文介绍了一种从DLL文件中提取图标的C#方法，利用Shell32.dll中的API函数实现图标资源的读取，并展示了如何将这些图标添加到ImageList中以供应用程序使用。

            [DllImport("Shell32.dll")]
        public static extern int ExtractIcon(IntPtr h, string strx, int ii);

        [DllImport("Shell32.dll")]
        public static extern int SHGetFileInfo(string pszPath, uint dwFileAttributes, ref SHFILEINFO psfi, uint cbFileInfo, uint uFlags);

        public struct SHFILEINFO
        {
            public IntPtr hIcon;
            public int iIcon;
            public uint dwAttributes;
            public char szDisplayName;
            public char szTypeName;
        }

  protected virtual Icon myExtractIcon(string FileName, int iIndex)
        {
            try
            {
                IntPtr hIcon = (IntPtr)ExtractIcon(this.Handle, FileName, iIndex);
                if (!hIcon.Equals(null))
                {
                    Icon icon = Icon.FromHandle(hIcon);
                    return icon;
                }
            }
            catch (Exception ex)
            { MessageBox.Show(ex.Message, "错误提示", 0, MessageBoxIcon.Error); }
            return null;
        }

Icon ic0 = myExtractIcon("%SystemRoot%\\system32\\shell32.dll", 15);
            TreeImageList.Images.Add(ic0);
            Icon ic1 = myExtractIcon("%SystemRoot%\\system32\\shell32.dll", 5);
            TreeImageList.Images.Add(ic1);
            Icon ic2 = myExtractIcon("%SystemRoot%\\system32\\shell32.dll", 7);
            TreeImageList.Images.Add(ic2);
            Icon ic3 = myExtractIcon("%SystemRoot%\\system32\\shell32.dll", 11);
            TreeImageList.Images.Add(ic3);