c# windows程序调用本地输入法

   好久没写博客了，今天写了一个DEMO,在WINform程序中调用本地输入法，并在窗体中显示出来。其中使用到了很多API,现把代码贴出来，供大家参考

private string _CurrentImeHandleStr = ""; public delegate bool EnumResNameProc(IntPtr hModule, IntPtr nType, StringBuilder sName, IntPtr lParam); System.ComponentModel.ComponentResourceManager resources = new ComponentResourceManager(typeof(Form17)); public Form17() { InitializeComponent(); } #region API定义 private static readonly int BTN_HEIGHT = 21; private static readonly int IMAGE_ICON = 1; private const int DONT_RESOLVE_DLL_REFERENCES = 0x1; private const int LOAD_LIBRARY_AS_DATAFILE = 0x2; private const int LOAD_WITH_ALTERED_SEARCH_PATH = 0x8; private const int RT_ICON = 0x3; private const int RT_BITMAP = 0x2; private const int RT_GROUP_ICON = (RT_ICON + 11); //API定义 [DllImport("Kernel32.dll")] public extern static bool FreeLibrary(IntPtr hModule); [DllImport("user32.dll")] public extern static IntPtr LoadIcon(IntPtr hInstance, string iID); /// <summary> /// 得到输入法说明 /// </summary> /// <param name="Hkl"></param> /// <param name="sName"></param> /// <param name="nBuffer"></param> /// <returns></returns> [DllImport("Imm32.dll")] public extern static int ImmGetDescription(IntPtr Hkl, StringBuilder sName, int nBuffer); /// <summary> /// 得到输入法的文件名 /// </summary> /// <param name="Hkl"></param> /// <param name="sFileName"></param> /// <param name="nBuffer"></param> /// <returns></returns> [DllImport("Imm32.dll")] public extern static int ImmGetIMEFileName(IntPtr Hkl, StringBuilder sFileName, int nBuffer); [DllImport("Kernel32.dll")] public extern static IntPtr LoadLibraryEx(string sFileName, IntPtr hFile, int dwFlags); [DllImport("Kernel32.dll")] public extern static bool EnumResourceNames(IntPtr hModule, IntPtr nType, EnumResNameProc lpEnumFunc, int lParam); [DllImport("shell32.dll")] public extern static IntPtr ExtractIcon(IntPtr hInstance, string sExeFileName, int nIconIndex); [DllImport("user32.dll")] public extern static IntPtr LoadImage(IntPtr hInstance, string sID, int nType, int cx, int cy, int fuLoad); #endregion private void Form17_Load(object sender, EventArgs e) { //初始化菜单 InitMenus(); } void Application_Idle(object sender, EventArgs e) { if (this._CurrentImeHandleStr == Application.CurrentInputLanguage.Handle.ToString()) return; //显示新的输入法 ChangeIme(Application.CurrentInputLanguage.Handle); } private void toolStripButton1_Click(object sender, EventArgs e) { this.contextMenuStrip1.Show(this.toolStrip1, new Point(0, 0), ToolStripDropDownDirection.AboveRight); } /// <summary> /// 初始化菜单 /// </summary> private void InitMenus() { this.contextMenuStrip1.Items.Clear(); string sLayoutName = ""; foreach (InputLanguage item in InputLanguage.InstalledInputLanguages) { sLayoutName = GetImmDescription(item);//item.LayoutName; // if (string.IsNullOrEmpty(sLayoutName)) { continue; } ToolStripMenuItem oMenuItem = new ToolStripMenuItem(); oMenuItem.Checked = (item.Handle.ToString() == InputLanguage.CurrentInputLanguage.Handle.ToString()); oMenuItem.Text = sLayoutName; oMenuItem.ToolTipText = sLayoutName; oMenuItem.Click += new EventHandler(oMenuItem_Click); oMenuItem.Tag = item; oMenuItem.Image = GetImeBitmap(item); this.contextMenuStrip1.Items.Add(oMenuItem); } } /// <summary> /// 得到指定输入法的说明 /// </summary> /// <param name="hKl"></param> /// <returns></returns> private string GetImmDescription(InputLanguage inpt) { int nBuffer = 0; StringBuilder sName = new StringBuilder(); string sDesc = ""; nBuffer = ImmGetDescription(inpt.Handle, null, nBuffer); sName = new StringBuilder(nBuffer); ImmGetDescription(inpt.Handle, sName, nBuffer); sDesc = sName.ToString(); if (string.IsNullOrEmpty(sDesc)) { sDesc = inpt.LayoutName; } return sDesc; } /// <summary> /// 单击输入法事件 /// </summary> /// <param name="sender"></param> /// <param name="e"></param> void oMenuItem_Click(object sender, EventArgs e) { ToolStripMenuItem oItem = (ToolStripMenuItem)sender; foreach (ToolStripMenuItem item in this.contextMenuStrip1.Items) { item.CheckState = CheckState.Unchecked; } oItem.CheckState = CheckState.Checked; Application.CurrentInputLanguage = ((InputLanguage)oItem.Tag); InputLanauageChangedUI(); } /// <summary> /// 得到指定输入法的图标 /// </summary> /// <param name="ime"></param> /// <returns></returns> private Image GetImeBitmap(InputLanguage ime) { int nBuffer = 0; StringBuilder sName; Image oBitmap = null; //得到IME文件 nBuffer = ImmGetIMEFileName(ime.Handle, null, nBuffer); sName = new StringBuilder(nBuffer); ImmGetIMEFileName(ime.Handle, sName, nBuffer); if (string.IsNullOrEmpty(sName.ToString())) { return Properties.Resources.input; } else { //从资源文件中得到图标 string sFileName = System.IO.Path.Combine(Environment.GetFolderPath(Environment.SpecialFolder.System), sName.ToString()); if (File.Exists(sFileName)) { oBitmap = GetBitmapFromResource(sFileName, ""); } if (oBitmap == null) { oBitmap = Properties.Resources.input; } return oBitmap; } } private Image GetBitmapFromResource(string sFileName, string sBitmapFlag) { Bitmap oBitmap = null; IntPtr hModule = LoadLibraryEx(sFileName, IntPtr.Zero, LOAD_LIBRARY_AS_DATAFILE); if (hModule == IntPtr.Zero) { System.Diagnostics.Debug.WriteLine("未能成功加载" + sFileName); return null; } string sName = "IMEICO"; IntPtr hIcon = IntPtr.Zero; System.Diagnostics.Debug.WriteLine("正在获取" + sFileName + "中所有图标。"); hIcon = ExtractIcon(this.Handle, sFileName, 0); if (hIcon == IntPtr.Zero) { sName = "#101"; hIcon = LoadImage(hModule, sName, IMAGE_ICON, 16, 16, 0); } if (hIcon != IntPtr.Zero) { System.Diagnostics.Debug.WriteLine(string.Format("Hicon:{0}", hIcon.ToString())); oBitmap = Icon.FromHandle(hIcon).ToBitmap(); } EnumResourceNames(hModule, this.MAKEINTRESOURCE(RT_GROUP_ICON), this.EnumIconResourceProc, 0); //释放 FreeLibrary(hModule); return oBitmap; } private IntPtr MAKEINTRESOURCE(int nID) { return new IntPtr((long)((short)nID)); } private bool EnumIconResourceProc(IntPtr hModule, IntPtr nType, StringBuilder sName, IntPtr lParam) { System.Diagnostics.Debug.WriteLine(string.Format("得到的资源名称：{0}", sName)); //得到图标 IntPtr hIcon = LoadIcon(hModule, sName.ToString()); Icon icon = Icon.FromHandle(hIcon); return true; } private void Form17_InputLanguageChanged(object sender, InputLanguageChangedEventArgs e) { Application.CurrentInputLanguage = e.InputLanguage; this.ChangeIme(e.InputLanguage.Handle); } /// <summary> /// 改变输入法函数 /// </summary> /// <param name="handle"></param> private void ChangeIme(IntPtr handle) { this._CurrentImeHandleStr = handle.ToString(); //改变输入法的状态 foreach (ToolStripMenuItem item in this.contextMenuStrip1.Items) { if (((InputLanguage)item.Tag).Handle.ToString() == handle.ToString()) { item.CheckState = CheckState.Checked; } else { item.CheckState = CheckState.Unchecked; } } InputLanauageChangedUI(); } /// <summary> /// 输入法改变时界面的变化 /// </summary> private void InputLanauageChangedUI() { //改变相应的图标 foreach (ToolStripMenuItem item in this.contextMenuStrip1.Items) { if (item.CheckState == CheckState.Checked) { this.ToolBtn.Image = item.Image; this.ToolBtn.ToolTipText = item.Text; } } //重新设置组件的大小 this.toolStrip1.Height = BTN_HEIGHT; }

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