如何根据窗口句柄更改窗口图标？

[grearo]

如何根据窗口句柄更改窗口图标？

[编程技术应用]

[DllImport("user32.dll")]
static extern IntPtr LoadIcon(IntPtr hInstance, IntPtr lpIconName);
[DllImport("user32.dll", SetLastError = true, CharSet = CharSet.Auto)]
static extern IntPtr LoadImage(IntPtr hinst, string lpszName, uint uType,
   int cxDesired, int cyDesired, uint fuLoad);

相关使用参考代码：

namespace ITLN.Utils.GUI {
    public static class AuxiliaryGUIIcon {
        [DllImport("user32.dll", SetLastError = true, CharSet = CharSet.Auto)]
        private static extern IntPtr LoadImage(IntPtr hinst, string lpszName, uint uType,
            int cxDesired, int cyDesired, uint fuLoad);
        [DllImport("user32.dll", SetLastError = true)]
        private static extern int DestroyIcon(IntPtr hIcon);
        [DllImport("kernel32.dll", SetLastError = true, CharSet = CharSet.Auto)]
        private static extern IntPtr LoadLibraryEx(string lpFileName, IntPtr hFile, LoadLibraryFlags dwFlags);
        private enum LoadLibraryFlags : uint {
            DONT_RESOLVE_DLL_REFERENCES = 0x00000001,
            LOAD_IGNORE_CODE_AUTHZ_LEVEL = 0x00000010,
            LOAD_LIBRARY_AS_DATAFILE = 0x00000002,
            LOAD_LIBRARY_AS_DATAFILE_EXCLUSIVE = 0x00000040,
            LOAD_LIBRARY_AS_IMAGE_RESOURCE = 0x00000020,
            LOAD_WITH_ALTERED_SEARCH_PATH = 0x00000008
        }
        /// <summary>
        /// Returns an icon of given size.
        /// </summary>
        /// <param name="path">Path to a file (.exe/.dll) that contains the icons.
        ///        Skip it or use <c>null</c> to use current application's file.</param>
        /// <param name="resId">Name of the resource icon that should be loaded.
        ///        Skip it to use the default <c>#32512</c> (value of <c>IDI_APPLICATION</c>) to use
        ///        the application's icon.</param>
        /// <param name="size">Size of the icon to load. If there is no such size available, a larger or smaller
        ///        sized-icon is scaled.</param>
        /// <returns>List of all icons.</returns>
        public static Icon GetIconFromExe(string path = null, string resId = "#32512", int size = 32) {
            // load module
            IntPtr h;
            if (path == null)
                h = Marshal.GetHINSTANCE(Assembly.GetEntryAssembly().GetModules()[0]);
            else {
                h = LoadLibraryEx(path, IntPtr.Zero, LoadLibraryFlags.LOAD_LIBRARY_AS_DATAFILE);
                if (h == IntPtr.Zero)
                    return null;
            }

            // 1 is IMAGE_ICON
            IntPtr ptr = LoadImage(h, resId, 1, size, size, 0);
            if (ptr != IntPtr.Zero) {
                try {
                    Icon icon = (Icon)Icon.FromHandle(ptr).Clone();
                    return icon;
                } finally {
                    DestroyIcon(ptr);
                }
            }
            return null;
        }
    }
}

[编程技术应用]

可能是 win32API 吧... 好像没有遇到过这类的api... 等大神回复...

[grearo]

user32.dll 下的 LoadIcon LoadImage怎么用？