/// <summary>
/// </summary>
public static String GetImmCompositionString(IntPtr immContext, Int32 dwIndex)
{
if (immContext == IntPtr.Zero)
{
return(null);
}
Int32 dwBufLen = Imm32.ImmGetCompositionStringW(immContext, dwIndex, null, 0);
if (dwBufLen < 0)
{
return(null);
}
StringBuilder lpBuf = new StringBuilder(dwBufLen / 2);
dwBufLen = Imm32.ImmGetCompositionStringW(immContext, dwIndex, lpBuf, dwBufLen);
if (dwBufLen < 0)
{
return(null);
}
return(lpBuf.ToString().Substring(0, dwBufLen / 2));
}
public static bool IsImeActive(IntPtr windowHandle)
{
bool isActive = false;
try
{
IntPtr handle = Imm32.ImmGetContext(windowHandle);
if (handle == IntPtr.Zero)
{
return(false);
}
try
{
isActive = Imm32.ImmGetOpenStatus(handle);
}
finally
{
Imm32.ImmReleaseContext(windowHandle, handle);
}
return(isActive);
}
catch (Exception ex)
{
Trace.Fail("Failed to check if IME is active: " + ex);
return(isActive);
}
}
/// <summary>
/// </summary>
public static void FlushImmCompositionString(IntPtr immContext)
{
if (immContext != IntPtr.Zero)
{
StringBuilder lpComp = new StringBuilder();
Imm32.ImmSetCompositionStringW(immContext, 9, lpComp, 0, lpComp, 0);
}
}
/// <summary>
/// </summary>
public static void AttachContext(HwndSource hwndSource)
{
if (hwndSource == null)
{
throw new ArgumentNullException("hwndSource");
}
IntPtr hIMC = Imm32.ImmCreateContext();
if (hIMC != IntPtr.Zero)
{
Imm32.ImmAssociateContext(hwndSource.Handle, hIMC);
}
}
/// <summary>
/// </summary>
public static void DetachContext(HwndSource hwndSource)
{
if (hwndSource == null)
{
throw new ArgumentNullException("hwndSource");
}
IntPtr immContext = Imm32.ImmAssociateContext(hwndSource.Handle, IntPtr.Zero);
if (immContext != IntPtr.Zero)
{
Imm32.ImmDestroyContext(immContext);
}
}
/// <summary>
/// </summary>
public static IntPtr GetImmContext(Visual visual)
{
if (visual == null)
{
throw new ArgumentNullException("visual");
}
HwndSource hwndSource = GetHwndSource(visual);
if (hwndSource != null)
{
return(Imm32.ImmGetContext(hwndSource.Handle));
}
return(IntPtr.Zero);
}
/// <summary>
/// </summary>
public static Boolean SetImmFontHeight(IntPtr immContext, Int32 fontHeight)
{
if (immContext == IntPtr.Zero)
{
return(false);
}
LOGFONT structure = new LOGFONT();
structure.lfHeight = fontHeight;
IntPtr ptr = Marshal.AllocHGlobal(Marshal.SizeOf(structure));
Marshal.StructureToPtr(structure, ptr, true);
Boolean flag = Imm32.ImmSetCompositionFontW(immContext, ptr);
Marshal.FreeHGlobal(ptr);
return(flag);
}
/// <summary>
/// 移动光标到新的光标区域
/// </summary>
/// <param name="vLeft">在视图中光标区域的左端位置</param>
/// <param name="vTop">在视图中光标区域的顶端位置</param>
/// <param name="vWidth">光标区域宽度</param>
/// <param name="vHeight">光标区域高度</param>
/// <returns>移动光标是否造成滚动</returns>
public bool MoveCaretTo(int vLeft, int vTop, int vWidth, int vHeight)
{
if (this.Updating)
{
return(false);
}
if (ForceShowCaret == false && this.Focused == false)
{
if (bolCaretCreated)
{
myCaret.Hide();
}
return(false);
}
int height = GraphicsUnitConvert.Convert(vHeight, this.GraphicsUnit, System.Drawing.GraphicsUnit.Pixel);
if (vWidth > 0 && vHeight > 0)
{
bolCaretCreated = myCaret.Create(0, vWidth, height);
if (bolCaretCreated)
{
if (bolMoveCaretWithScroll)
{
//Modified by wwj 2011-11-24 移除自动判断的滚动条的逻辑 不知道为什么要移除，现在打开看有什么问题 edit by Ukey zhang 2017-11-11-15
//this.ScrollToView(vLeft, vTop, vWidth, vHeight);
}
System.Drawing.Point p = this.ViewPointToClient(vLeft, vTop);
myCaret.SetPos(p.X, p.Y);
myCaret.Show();
if (Imm32.isImmOpen(this.Handle.ToInt32()))
{
Imm32.SetImmPos(this.Handle.ToInt32(), p.X, p.Y);
}
myCaretBounds = new System.Drawing.Rectangle(p.X, p.Y, vWidth, height);
if (bolMoveCaretWithScroll)
{
return(true);
}
}
}
return(false);
}
/// <summary>
/// </summary>
public static Boolean HanjaConversion(Visual visual, IntPtr keyboardLayout, Char selection)
{
IntPtr immContext = GetImmContext(visual);
if (immContext != IntPtr.Zero)
{
IntPtr lpBuf = Marshal.StringToHGlobalUni(new String(selection, 1));
IntPtr ptr3 = Imm32.ImmEscapeW(keyboardLayout, immContext, 0x1008, lpBuf);
Marshal.FreeHGlobal(lpBuf);
ReleaseImmContext(visual, immContext);
if (ptr3 != IntPtr.Zero)
{
return(true);
}
}
return(false);
}
/// <summary>
/// </summary>
public static Boolean ReleaseImmContext(Visual visual, IntPtr immContext)
{
if (visual == null)
{
throw new ArgumentNullException("visual");
}
if (immContext != IntPtr.Zero)
{
HwndSource hwndSource = GetHwndSource(visual);
if (hwndSource != null)
{
return(Imm32.ImmReleaseContext(hwndSource.Handle, immContext));
}
}
return(false);
}
/// <summary>
/// </summary>
public static Boolean SetCompositionWindowPosition(IntPtr immContext, Point pt, Visual relativeTo)
{
if (immContext == IntPtr.Zero)
{
throw new ArgumentNullException("immContext");
}
if (relativeTo == null)
{
throw new ArgumentNullException("relativeTo");
}
Visual rootVisual = GetRootVisual(relativeTo);
if (rootVisual == null)
{
return(false);
}
Point point = relativeTo.TransformToAncestor(rootVisual).Transform(pt);
HwndSource hwndSource = GetHwndSource(rootVisual);
if (hwndSource != null)
{
point = hwndSource.CompositionTarget.TransformToDevice.Transform(point);
}
COMPOSITIONFORM structure = new COMPOSITIONFORM();
structure.dwStyle = 2;
structure.ptCurrentPos = new POINT((Int32)point.X, (Int32)point.Y);
IntPtr ptr = Marshal.AllocHGlobal(Marshal.SizeOf(structure));
Marshal.StructureToPtr(structure, ptr, true);
Boolean flag = Imm32.ImmSetCompositionWindow(immContext, ptr);
Marshal.FreeHGlobal(ptr);
return(flag);
}
/// <summary>
/// 取得指定輸入法的 keyboard layout handle。
/// </summary>
/// <param name="imeName">輸入法名稱。</param>
/// <returns>若成功取得輸入法 handle，則傳回 handle 指標，否則傳回空指標。</returns>
public static void InitializeKeyboardLayoutList()
{
const int MaxHkl = 20;
IntPtr[] hklList = new IntPtr[MaxHkl];
int cntHkl;
int i;
IntPtr imeNamePtr;
string imeName;
cntHkl = Imm32.GetKeyboardLayoutList(hklList.Length, hklList);
if (cntHkl < 1)
{
return;
}
imeNamePtr = Marshal.AllocHGlobal(256);
try
{
for (i = 0; i < cntHkl; i++)
{
if (Imm32.ImmEscape(hklList[i], IntPtr.Zero, Imm32.IME_ESC_IME_NAME, imeNamePtr) == 0)
{
continue;
}
imeName = Marshal.PtrToStringUni(imeNamePtr);
KeyboardLayoutInfo kli = new KeyboardLayoutInfo(imeName, hklList[i]);
_keyboardLayoutList.Add(kli);
}
}
finally
{
Marshal.FreeHGlobal(imeNamePtr);
}
}
public static HIMC ImmGetContext(this HWND hWnd) => Imm32.ImmGetContext(hWnd);
public static bool ImmAssociateContextEx(this HWND hWnd, HIMC hIMC, IACE dwFlags) => Imm32.ImmAssociateContextEx(hWnd, hIMC, dwFlags);
public static bool ImmDestroyContext(this HIMC hIMC) => Imm32.ImmDestroyContext(hIMC);
public static (IME_CMODE, IME_SMODE) ImmGetConversionStatus(this HIMC hIMC)
{
Imm32.ImmGetConversionStatus(hIMC, out var cmode, out var smode);
return(cmode, smode);
}
public static string ImmGetDescription(this HKL hKL) => BufferReader.ReadString((buf, size) => Imm32.ImmGetDescriptionW(hKL, buf, size));
public static void ImmSetOpenStatus(this HIMC hIMC, bool status) => Imm32.ImmSetOpenStatus(hIMC, status ? -1 : 0);
public static bool ImmGetOpenStatus(this HIMC hIMC) => Imm32.ImmGetOpenStatus(hIMC);
public static CandidateCollection ImmGetCandidateList(this HIMC hIMC) => new CandidateCollection(BufferReader.ReadBytes((buf, size) => Imm32.ImmGetCandidateListW(hIMC, 0, buf, size)));
public static string ImmGetCompositionString(this HIMC hIMC, GCS dwIndex) => BufferReader.ReadString((buf, size) => Imm32.ImmGetCompositionStringW(hIMC, dwIndex, buf, size));
public static bool ImmReleaseContext(this HWND hWnd, HIMC hIMC) => Imm32.ImmReleaseContext(hWnd, hIMC);
/// <summary>
/// </summary>
public static Boolean ImmNotifyIME(IntPtr immContext, Int32 dwAction, Int32 dwIndex, Int32 dwValue)
{
return(Imm32.ImmNotifyIME(immContext, dwAction, dwIndex, dwValue));
}