C++和C#编写调用COM组件
作者:徐凌超
下载源代码
摘要:现在COM组件的使用越来越广泛,在各个程序中调用COM组件我想大家都遇到过,这篇文章就是关于COM组件的编写和调用的,主要包含了使用VC6.0编写和调用COM组件,VS2005中使用C#编写和调用COM组件,以及在VC6.0和VS2005之间互相调用COM组件。
关键字:VC6.0编写调用COM VS2005中C#编写和调用COM VC6.0和VS2005之间互相调用COM
正文:
前一阵在工作中做项目的时候,遇到了COM组件的调用和使用问题,当时研究和好一阵,才把中间的环节打通,现在写出来为大家提供方便,这里包含了四个类型:
1、在VS2005中,C#编写DLL并使用C++调用
2、在VS2005中C#编写的COM组件,使用VC6.0调用
3、在VC6.0中编写COM组件,使用VS2005 C#调用
4、在VC6.0中编写COM组件,使用VC6.0调用
其中每个类型都写了两个程序,一个为COM组件程序,一个为调用程序
程序实现:
1、在VS2005中,C#编写DLL并使用C++调用
(1)C#编写DLL程序
建立C#编写的DLL程序AddDll,项目类型为:类库
程序代码:
using System;using System.Collections.Generic;using System.Text;namespace AddDll{public class Add{public int iadd(int a, int b){int c = a + b;return c;}}}
#include "stdafx.h"#include "stdio.h"#using "..\debug\AddDll.dll"using namespace AddDll;int _tmain(int argc, _TCHAR* argv[]){int result;Add ^add = gcnew Add();result = add->iadd(10,90);printf("%d",result);scanf("%s");return 0;}
using System;using System.Collections.Generic;using System.Text;using System.Runtime.InteropServices;namespace AddCom{//可以通过//菜单的 “工具/guid生成”。//注意要选择Define Guid{….}格式,并全//部保存下来,保存到哪都行,记事本呀什么的。//因为在做VC程序/////////的时候要用到的。[Guid("298D881C-E2A3-4638-B872-73EADE25511C")]public interface AddComInterface{[DispId(1)]int iadd(int a, int b);[DispId(2)]float ladd(float a, float b);}[Guid("2C5B7580-4038-4d90-BABD-8B83FCE5A467")][ClassInterface(ClassInterfaceType.None)]public class AddComService : AddComInterface{public AddComService(){}public int iadd(int a, int b){int c = 0;c = a + b;return c;}public float ladd(float a, float b){float c = 0;c = a + b;return c;}}}
#import "AddCom.tlb"using namespace AddCom;
void CUseComDlg::OnButtonUse(){// TODO: Add your control notification handler code hereint dresult;float fresult;CString strResult;CoInitialize(NULL);//NULL换成0也可以AddCom::AddComInterfacePtr p_Add(__uuidof(AddComService));dresult = p_Add->iadd(1,2);fresult = p_Add->fadd(1.2,2.3);strResult.Format("int:%d \nfloat:%f",dresult,fresult);MessageBox(strResult,"计算结果",MB_OK);CoUninitialize();}
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);};
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;}
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();}}
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);};
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;}
void CUseComDlg::OnBUTTONUse(){// TODO: Add your control notification handler code hereCString 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();}
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