[英]Wrap C# code as ActiveX
我編寫了一個C#類庫,並希望在vbscript中使用它。 這是我的代碼:
using System;
using System.Collections.Generic;
using System.Text;
using Microsoft.PointOfService;
using System.Runtime.InteropServices;
using Microsoft.Win32;
using System.Reflection;
using System.ComponentModel;
namespace IndigoDynamic
{
#region class implements IAsyncResult
[ProgId("IndigoDynamic.VirtualManager")]
[ClassInterface(ClassInterfaceType.AutoDispatch)]
[ComVisible(true)]
public class AsyncResult : IAsyncResult
{
object _state;
private bool m_completed;
private System.Threading.ManualResetEvent m_handle;
private Exception m_exception;
public bool IsCompleted
{
get { return m_completed; }
set { m_completed = value; }
}
public System.Threading.WaitHandle AsyncWaitHandle
{
get { return m_handle; }
set { m_handle = (System.Threading.ManualResetEvent)value; }
}
public object AsyncState
{
get
{
if (Exception != null)
{
throw Exception;
}
return _state;
}
internal set
{
_state = value;
}
}
public bool CompletedSynchronously { get { return IsCompleted; } }
internal Exception Exception
{
get { return m_exception; }
set { m_exception = value; }
}
}
#endregion
#region extends CashDrawer
[ProgId("IndigoDynamic.VirtualManager")]
[ClassInterface(ClassInterfaceType.AutoDispatch)]
[ComVisible(true)]
public class MyCashDrawer
{
private CashDrawer me;
public delegate void status_callback(int newstatus);
private status_callback myF;
public MyCashDrawer(CashDrawer param)
{
me = param;
me.StatusUpdateEvent += new StatusUpdateEventHandler(this.StatusUpdate);
}
[ComVisible(true)]
public void Claim(int timeout) { me.Claim(timeout); }
[ComVisible(true)]
public void Close() { me.Close(); }
[ComVisible(true)]
public void Open() { me.Open(); }
[ComVisible(true)]
public void OpenDrawer() { me.OpenDrawer(); }
[ComVisible(true)]
public void Release() { me.Release(); }
[ComVisible(true)]
public void Release(int timeout, int freq, int duration, int delay)
{
me.WaitForDrawerClose(timeout, freq, duration, delay);
}
[ComVisible(true)]
public int StatusClosed() { return CashDrawer.StatusClosed; }
[ComVisible(true)]
public int StatusOpen() { return CashDrawer.StatusOpen; }
[ComVisible(true)]
public bool Claimed() { return me.Claimed; }
[ComVisible(true)]
public bool DeviceEnabled() { return me.DeviceEnabled; }
[ComVisible(true)]
public bool DrawerOpened() { return me.DrawerOpened; }
[ComVisible(true)]
public ControlState State() { return me.State; }
[ComVisible(true)]
public void addStatusCallback(status_callback f)
{
myF = f;
}
[ComVisible(true)]
public void removeStatusCallback(status_callback f)
{
if (myF == f)
myF = null;
}
[ComVisible(true)]
private void StatusUpdate(object sender, StatusUpdateEventArgs arg)
{
if (myF != null)
myF(arg.Status);
}
}
#endregion
[ProgId("IndigoDynamic.VirtualManager")]
[ClassInterface(ClassInterfaceType.AutoDispatch)]
[ComVisible(true)]
class VirtualManager : ISynchronizeInvoke
{
private readonly object _sync;
// Constructor
public VirtualManager()
{
_sync = new object();
}
#region implements methods of ISynchronizeInvoke
public IAsyncResult BeginInvoke(Delegate method, object[] args) {
AsyncResult result = new AsyncResult();
System.Threading.ThreadPool.QueueUserWorkItem(delegate {
result.AsyncWaitHandle = new System.Threading.ManualResetEvent(false);
try {
result.AsyncState = Invoke(method, args);
} catch (Exception exception) {
result.Exception = exception;
}
result.IsCompleted = true;
});
return result;
}
public object EndInvoke(IAsyncResult result) {
if (!result.IsCompleted) {
result.AsyncWaitHandle.WaitOne();
}
return result.AsyncState;
}
public object Invoke(Delegate method, object[] args) {
lock (_sync) {
return method.DynamicInvoke(args);
}
}
public bool InvokeRequired {
get { return true; }
}
#endregion
[ComVisible(true)]
public MyCashDrawer getCashDrawer()
{
PosExplorer posExplorer = new PosExplorer(this);
DeviceInfo deviceInfo = posExplorer.GetDevice(DeviceType.CashDrawer);
if (deviceInfo == null)
{
//<report failure >
return null;
}
else
{
CashDrawer cd = posExplorer.CreateInstance(deviceInfo) as CashDrawer;
return new MyCashDrawer(cd);
}
}
[ComVisible(true)]
public MyCashDrawer getCashDrawer(String name)
{
PosExplorer posExplorer = new PosExplorer(this);
DeviceInfo deviceInfo = posExplorer.GetDevice(DeviceType.CashDrawer, name);
if (deviceInfo == null)
{
//<report failure >
return null;
}
else
{
CashDrawer cd = posExplorer.CreateInstance(deviceInfo) as CashDrawer;
return new MyCashDrawer(cd);
}
}
[ComRegisterFunction()]
public static void RegisterClass(string key)
{
StringBuilder sb = new StringBuilder(key);
sb.Replace(@"HKEY_CLASSES_ROOT\", "");
RegistryKey k = Registry.ClassesRoot.OpenSubKey(sb.ToString(), true);
RegistryKey ctrl = k.CreateSubKey("Control");
ctrl.Close();
RegistryKey inprocServer32 = k.OpenSubKey("InprocServer32", true);
inprocServer32.SetValue("CodeBase", Assembly.GetExecutingAssembly().CodeBase);
inprocServer32.Close();
k.Close();
}
[ComUnregisterFunction()]
public static void UnregisterClass(string key)
{
StringBuilder sb = new StringBuilder(key);
sb.Replace(@"HKEY_CLASSES_ROOT\", "");
RegistryKey k = Registry.ClassesRoot.OpenSubKey(sb.ToString(), true);
if (k == null)
{
return;
}
k.DeleteSubKey("Control", false);
RegistryKey inprocServer32 = k.OpenSubKey("InprocServer32", true);
inprocServer32.DeleteSubKey("CodeBase", false);
inprocServer32.Close();
k.Close();
}
}
}
構建之后,我使用RegAsm,但它拋出警告沒有注冊類型。 然后我在vbs中編寫了一個示例代碼,但它說ActiveX不能創建Object。
Sub main
set objTest = CreateObject("IndigoDynamic.VirtualManager")
end sub
call main
有人說我必須檢查AssemblyInfo.cs並確保我有
[assembly: ComVisible(true)]
我當然有,但問題仍未解決。 誰能告訴我一個解決方案?
我改變了我的代碼。 更簡單,沒有線程,沒有界面,都是公開的。 但它仍然無效。 拜托,我真的需要幫助。
using System;
using System.Collections.Generic;
using System.Text;
using Microsoft.PointOfService;
using System.Runtime.InteropServices;
using Microsoft.Win32;
using System.Reflection;
using System.ComponentModel;
namespace IndigoDynamic
{
[ProgId("IndigoDynamic.VirtualManager")]
[ClassInterface(ClassInterfaceType.AutoDispatch)]
[ComVisible(true)]
public class VirtualManager
{
public VirtualManager()
{
}
[ComVisible(true)]
public CashDrawer getCashDrawer()
{
PosExplorer posExplorer = new PosExplorer();
DeviceInfo deviceInfo = posExplorer.GetDevice(DeviceType.CashDrawer);
if (deviceInfo == null)
{
//<report failure >
return null;
}
else
{
CashDrawer cd = posExplorer.CreateInstance(deviceInfo) as CashDrawer;
return cd;
}
}
[ComVisible(true)]
public CashDrawer getCashDrawer(String name)
{
PosExplorer posExplorer = new PosExplorer();
DeviceInfo deviceInfo = posExplorer.GetDevice(DeviceType.CashDrawer, name);
if (deviceInfo == null)
{
//<report failure >
return null;
}
else
{
CashDrawer cd = posExplorer.CreateInstance(deviceInfo) as CashDrawer;
return cd;
}
}
[ComRegisterFunction()]
public static void RegisterClass(string key)
{
StringBuilder sb = new StringBuilder(key);
sb.Replace(@"HKEY_CLASSES_ROOT\", "");
RegistryKey k = Registry.ClassesRoot.OpenSubKey(sb.ToString(), true);
RegistryKey ctrl = k.CreateSubKey("Control");
ctrl.Close();
RegistryKey inprocServer32 = k.OpenSubKey("InprocServer32", true);
inprocServer32.SetValue("CodeBase", Assembly.GetExecutingAssembly().CodeBase);
inprocServer32.Close();
k.Close();
}
[ComUnregisterFunction()]
public static void UnregisterClass(string key)
{
StringBuilder sb = new StringBuilder(key);
sb.Replace(@"HKEY_CLASSES_ROOT\", "");
RegistryKey k = Registry.ClassesRoot.OpenSubKey(sb.ToString(), true);
if (k == null)
{
return;
}
k.DeleteSubKey("Control", false);
RegistryKey inprocServer32 = k.OpenSubKey("InprocServer32", true);
inprocServer32.DeleteSubKey("CodeBase", false);
inprocServer32.Close();
k.Close();
}
}
}
不幸遇到很遠的一個可行的解決方案中刪除。 警告是准確的,沒有一個類由COM客戶端創建[ComVisible]。 MyCashDrawer缺少必需的默認構造函數,COM客戶端應用程序無法將參數傳遞給構造函數。 VirtualManager不是公共的,並且源自不是[ComVisible]的接口
該代碼還缺少使ActiveX組件在ActiveX主機窗口上工作的接口所需的實現,如IOleObject,IOleInPlaceObject,IOleInplaceActiveObject,IOleWindow,IViewObject等。 此外,您正在公開ActiveX對象無法處理的實現細節,COM中的線程模型與.NET中的線程模型非常不同。
您將需要一種嚴重不同的方法。 考慮從System.Windows.Forms.Control派生可見對象,它負責最小的ActiveX接口實現要求。 並使線程化你的問題,不要讓它由客戶端解決。
訴訟警告不是問題。 也許這是因為VirtualManager類不公開。 嘗試將您的課程公開。
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