C++调用C#之C# COM控件

C#做界面真的是比C++方便多了，所以尝试了一下，使用C++做核心功能（例如绘图），然后用C#来做节目（例如对话框），考虑到以后可能不能使用.net，使用DLL做一个隔离层，隔离C++和C#，方便以后可以使用不同的语言开发。

C#部分：

1. 新建工程



 

2.  修改工程属性







 

3. 代码部分

ShowDialog.cs

using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Runtime.InteropServices;
using System.Windows.Forms;

namespace NetActiveX
{
//  事件接口
[InterfaceType(ComInterfaceType.InterfaceIsIDispatch)]
public interface IEvent
{
[DispId(20)]
void NotifyEvent(string s);
}
//  显示对话框接口
[InterfaceType(ComInterfaceType.InterfaceIsDual)]
public interface IShowDialog
{
void ShowDialog(string dlgType, string s);
}
//  显示对话框实现类
[ComDefaultInterface(typeof(IShowDialog)),
ComSourceInterfaces(typeof(IEvent)),
ComVisible(true)]
public class ShowDialogImpl : IShowDialog
{
public void ShowDialog(string dlgType, string s)
{
switch (dlgType)
{
case "EmployeeDialog":
ShowEmployeeDialog(s);
break;

default:
break;
}
}
//  定义委托和事件
public delegate void EventDelegate(string s);
public event EventDelegate NotifyEvent;
//  对话框应用确定通知
private void DialogNotify(Form from)
{
Type type = from.GetType();

switch (type.Name)
{
case "EmployeeDialog":
{
EmployeeDialog dlg = (EmployeeDialog)from;
EmployeeData employee = dlg.GetEmployee();
s = employee.ToString();
NotifyEvent(s);
}
break;

default:
break;
}
}
//  显示员工对话框
private void ShowEmployeeDialog(string s)
{
EmployeeDialog dlg = new EmployeeDialog();
EmployeeData employee = new EmployeeData();

employee.ParseString(s);
dlg.SetEmployee(employee);
dlg.SetNotify(DialogNotify);
dlg.ShowDialog();
}
}
}

EmployeeDialog.cs

using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Data;
using System.Drawing;
using System.Linq;
using System.Text;
using System.Windows.Forms;

namespace NetActiveX
{
public partial class EmployeeDialog : Form
{
public delegate void Notify(EmployeeDialog dlg);

public EmployeeDialog()
{
InitializeComponent();
}

protected void SaveData()
{
m_employee.m_name = m_textName.Text;
m_employee.m_sex = m_textSex.Text;
m_employee.m_age =  Int32.Parse(m_textAge.Text);
m_employee.m_phone = m_textPhone.Text;
m_employee.m_mobile = m_textMobile.Text;
}

private void EmployeeDialog_Load(object sender, EventArgs e)
{
if (m_employee != null)
{
m_textName.Text = m_employee.m_name;
m_textSex.Text = m_employee.m_sex;
m_textAge.Text = m_employee.m_age.ToString();
m_textPhone.Text = m_employee.m_phone;
m_textMobile.Text = m_employee.m_mobile;
}
}

private void m_btnOK_Click(object sender, EventArgs e)
{
SaveData();
m_notify(this);
this.Close();
}
private void m_btnApply_Click(object sender, EventArgs e)
{
SaveData();
m_notify(this);
}
private void m_btnCancel_Click(object sender, EventArgs e)
{
this.Close();
}

public void SetEmployee(EmployeeData employee)
{
m_employee = employee;
}
public EmployeeData GetEmployee()
{
return m_employee;
}
public void SetNotify(Notify notify)
{
m_notify = notify;
}

private Notify m_notify;
private EmployeeData m_employee;
}

public class EmployeeData
{
public void ParseString(string s)
{
int beg = -1;
int end = -1;

beg = 0;
end = s.IndexOf(",", beg);
if (end != -1)
{
m_name = s.Substring(beg, end - beg);
beg = end + 1;
}
end = s.IndexOf(",", beg);
if (end != -1)
{
m_sex = s.Substring(beg, end - beg);
beg = end + 1;
}
end = s.IndexOf(",", beg);
if (end != -1)
{
m_age = Int32.Parse(s.Substring(beg, end - beg));
beg = end + 1;
}
end = s.IndexOf(",", beg);
if (end != -1)
{
m_phone = s.Substring(beg, end - beg);
beg = end + 1;
}
if (beg < s.Length)
{
m_mobile = s.Substring(beg);
}
}

public override string ToString()
{
string s = string.Empty;

s += m_name;
s = s + "," + m_sex;
s = s + "," + m_age.ToString();
s = s + "," + m_phone;
s = s + "," + m_mobile;

return s;
}

public string m_name;
public string m_sex;
public int m_age;
public string m_phone;
public string m_mobile;
}
}