C++和C#编写调用COM组件
2010-05-27 20:37:10 来源:WEB开发网程序代码:
using System;
using System.Data;
using System.Configuration;
using System.Web;
using System.Web.Security;
using System.Web.UI;
using System.Web.UI.WebControls;
using System.Web.UI.WebControls.WebParts;
using System.Web.UI.HtmlControls;
using ADDCOMLib;
public partial class _Default : System.Web.UI.Page
{
protected void Page_Load(object sender, EventArgs e)
{
}
protected void ButtonCom_Click(object sender, EventArgs e)
{
Add add = new Add();
int iresult;
float fresult;
int sresult;
add.IAdd(10, 20, out iresult);
add.fadd((float)1.2,(float)2.3, out fresult);
add.isub(100, 10, out sresult);
TextBoxResult.Text = iresult.ToString();
TextBoxRe2.Text = fresult.ToString();
TextBoxRe3.Text = sresult.ToString();
}
}
4、在VC6.0中编写COM组件,使用VC6.0调用
(1)VC6.0编写COM组件
使用VC6.0建立COM组件,工程类型:ATL COM AppWizard
程序代码:
接口:
interface IAdd : IDispatch
{
[id(1), helpstring("method iadd")] HRESULT iadd([in]int a, [in]int b, [out]int * c);
[id(2), helpstring("method fadd")] HRESULT fadd([in]float a, [in]float b, [out]float * c);
[id(3), helpstring("method isub")] HRESULT isub([in]int a, [in]int b, [out]int * c);
};
实现:
STDMETHODIMP CAdd::iadd(int a, int b, int *c)
{
// TODO: Add your implementation code here
*c = a + b;
return S_OK;
}
STDMETHODIMP CAdd::fadd(float a, float b, float *c)
{
// TODO: Add your implementation code here
*c = a + b;
return S_OK;
}
STDMETHODIMP CAdd::isub(int a, int b, int *c)
{
// TODO: Add your implementation code here
*c = a - b;
return S_OK;
}
(2)VC6.0编写调用程序
使用VC6.0建立MFC应用程序UseCOM,调用刚刚建立的COM组件
将上面程序AddCom生成的AddCom.dll放入本程序的工程目录和程序生成目录中
在StdAfx.h中加入:
#import "AddCom.dll" no_namespace
程序代码:
void CUseComDlg::OnBUTTONUse()
{
// TODO: Add your control notification handler code here
CString strResult;
CoInitialize(NULL);//NULL换成0也可以
IAddPtr m_add = NULL;
HRESULT hr = S_OK;
hr = m_add.CreateInstance(__uuidof(Add));
int d_a = 90;
int d_b = 10;
int d_c;
int d_d;
float f_a = 1;
float f_b = 2;
float f_c;
m_add->_IAdd(d_a,d_b,&d_c);
m_add->fadd(f_a,f_b,&f_c);
m_add->isub(d_a,d_b,&d_d);
strResult.Format("返回结果:%d; %f; %d",d_c,f_c,d_d);
MessageBox(strResult,"结果",MB_OK);
m_add.Release();
m_add = NULL;
CoUninitialize();
}
结束语:希望能对大家有帮助!
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