C#编写ActiveX控件问题。IE中无法触发事件
C# 编写的 ActiveX 控件中含有事件。在HTML中无法触发,始终提示 事件为空!
HTML代码如下
<html>
<body bgcolor=’#223344’>
<Script Language=JavaScript>
function test()
{
helloworld.TestVoid( "test11 ");
}
</Script>
<object id= "helloworld "
classid= "clsid:A69AC4D2-7A3E-45f8-93D5-84F39E302116 " Width= "184 " Height= "96 "
>
</object>
<script for= "helloworld " event= "OnTestEvent(msg) " language= "javascript ">
alert(msg);
</script>
<input type= "button " onclick= "test() " value=’Click’>
</body>
</html>
AceiveX源码
public delegate void TestEvent(string msg);
[Guid( "A69AC4D2-7A3E-45f8-93D5-84F39E302116 ")]
[ComVisible(true)]
[ClassInterface(ClassInterfaceType.AutoDual)]
[ComSourceInterfaces(typeof(TestOcx.IUserControl1))]
public class UserControl1 : UserControl, IObjectSafety, TestOcx.IUserControl1
{
public event TestEvent OnTestEvent;
/// <summary>
/// 必需的设计器变量。
/// </summary>
private System.ComponentModel.IContainer components = null;
/// <summary>
/// 清理所有正在使用的资源。
/// </summary>
/// <param name= "disposing "> 如果应释放托管资源，为 true；否则为 false。 </param>
protected override void Dispose(bool disposing)
{
if (disposing && (components != null))
{
components.Dispose();
}
base.Dispose(disposing);
}
#region 组件设计器生成的代码
/// <summary>
/// 设计器支持所需的方法 - 不要
/// 使用代码编辑器修改此方法的内容。
/// </summary>
private void InitializeComponent()
{
this.label1 = new System.Windows.Forms.Label();
this.SuspendLayout();
//
// label1
//
this.label1.AutoSize = true;
this.label1.Location = new System.Drawing.Point(20, 31);
this.label1.Name = "label1 ";
this.label1.Size = new System.Drawing.Size(89, 12);
this.label1.TabIndex = 0;
this.label1.Text = "一个简单的控件 ";
//
// UserControl1
//
this.AutoScaleDimensions = new System.Drawing.SizeF(6F, 12F);
this.AutoScaleMode = System.Windows.Forms.AutoScaleMode.Font;
this.Controls.Add(this.label1);
this.Name = "UserControl1 ";
this.Size = new System.Drawing.Size(133, 78);
this.ResumeLayout(false);
this.PerformLayout();
}
#endregion
private System.Windows.Forms.Label label1;
public UserControl1()
{
InitializeComponent();
}
public void TestVoid(string msg)
{
MessageBox.Show( "TestVoid: "+msg);
//发生事件
if (this.OnTestEvent != null)
OnTestEvent(msg);
else
MessageBox.Show( "事件为空 ");
}
[解决办法]
namespace ClassLibrary222
{
[GuidAttribute( "9FD5FA47-A13C-4fb7-BBC2-740AB0FC0EB5 "), InterfaceTypeAttribute(ComInterfaceType.InterfaceIsIDispatch)]
public interface ControlEvents
{
[DispIdAttribute(1)]
void OnTestEvent(string msg);
}
/// <summary> Class1 的摘要说明 </summary>
/// <remarks> adsfasdfasdf </remarks>
[Guid( "A69AC4D2-7A3E-45f8-93D5-84F39E302116 ")]
[ComVisible(true)]
[ClassInterface(ClassInterfaceType.AutoDual)]
[ComSourceInterfacesAttribute(typeof(ClassLibrary222.ControlEvents))]
public class UserControl1 : UserControl
{
public delegate void TestEvent(string msg);
public event TestEvent OnTestEvent;
/// <summary>
/// 必需的设计器变量。
/// </summary>
private System.ComponentModel.IContainer components = null;
/// <summary>
/// 清理所有正在使用的资源。
/// </summary>
/// <param name= "disposing "> 如果应释放托管资源，为 true；否则为 false。 </param>
protected override void Dispose(bool disposing)
{
if (disposing && (components != null))
{
components.Dispose();
}
base.Dispose(disposing);
}
#region 组件设计器生成的代码
/// <summary>
/// 设计器支持所需的方法 - 不要
/// 使用代码编辑器修改此方法的内容。
/// </summary>
private void InitializeComponent()
{
this.label1 = new System.Windows.Forms.Label();
this.SuspendLayout();
//
// label1
//
this.label1.AutoSize = true;
this.label1.Location = new System.Drawing.Point(20, 31);
this.label1.Name = "label1 ";
this.label1.Size = new System.Drawing.Size(91, 17);
this.label1.TabIndex = 0;
this.label1.Text = "一个简单的控件 ";
//
// UserControl1
//
this.Controls.Add(this.label1);
this.Name = "UserControl1 ";
this.Size = new System.Drawing.Size(133, 78);
this.ResumeLayout(false);
}
#endregion
private System.Windows.Forms.Label label1;
public UserControl1()
{
InitializeComponent();
}
public void TestVoid(string msg)
{
MessageBox.Show( "808p: "+msg);
//发生事件
if (this.OnTestEvent != null)
OnTestEvent(msg);
else
MessageBox.Show( "事件为空 ");
}
}
}