javaandactivex.txt

Java调用ActiveX控件的例子

成功了 高兴中
先谢谢上面各位了
小嵩我用的是jni调用的c++作的嵌入了一个浏览器：）
把代码发上来大家分享
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//MyWindow.java
import java.awt.*;
import javax.swing.*;
import java.awt.event.*;
import java.awt.peer.*;
import sun.awt.*;

public class MyWindow extends Canvas
{
    static 
    {
        // Load the library that contains the JNI code.
        System.loadLibrary("MyWindow");
    }

    // native entry point for initializing the IE control.
    public native static void initialize(int hwnd, String strURL);

    // native entry point for resizing
    public native static void resizeControl(int hwnd, int nWidth, int nHeight);
    
    public native static int getNativeWindowHandle(Canvas canvas);
    
    public void addNotify()
    {
        super.addNotify();
        m_hWnd = getNativeWindowHandle(this);
        initialize(m_hWnd, m_strURL);
    }

    String m_strURL = "http://www.163.com";
    int    m_hWnd   = 0;

    public static void main( String[] argv )
    {
        Frame f = new Frame();
        f.setLayout(new BorderLayout());
        f.setTitle("Internet Explorer inside Java Canvas");
        
        MyWindow w = new MyWindow();
        if(argv.length>0)
            w.m_strURL = argv[0];

        String strText = "URL:" + w.m_strURL;
        f.add(w,BorderLayout.CENTER);
        f.add(new Label(strText),BorderLayout.NORTH);
        f.setBounds(300,300,500,300);
        f.setVisible(true);
    }

    public void setSize( int width, int height ) 
    {
        super.setSize(width,height);
        if(m_hWnd!=0)
            resizeControl(m_hWnd, width, height);
    }

    public void setSize( Dimension d ) 
    {
        super.setSize(d);
        if(m_hWnd!=0)
            resizeControl(m_hWnd, d.width, d.height);
    }

    public void setBounds( int x, int y, int width, int height ) 
    {
        super.setBounds(x,y,width,height);
        if(m_hWnd!=0)
            resizeControl(m_hWnd, width, height);
    }

    public void setBounds( Rectangle r ) 
    {
        super.setBounds(r);
        if(m_hWnd!=0)
            resizeControl(m_hWnd, r.width, r.height);
    }
}
--------------------------------------------------------------

将上面的文件编译得到MyWindow.class
再用javah MyWindow命令得到MyWindow.h头文件（是给c++用的）
剩下的事交给vc了
小嵩的vc是vc6.0中文版
建立一个dll的工程
文件-〉新建-〉Win32 Dynamic-Link Libiary
命名为MyWindow
建立一个.cpp文件 MyWindow.cpp
----------------------------------------------------------
//MyWindow.cpp
#include <jni.h>
#include <jawt.h>
#include <afxwin.h>
#include <windows.h>
#include "MyWindow.h"
#include "jawt_md.h"
//#include <assert.h>
#include <process.h>

// Includes for ATL
#pragma comment(lib,"atl.lib")
#include <atldef.h>
#define _ATL_DLL_IMPL
#include <atliface.h>
#include <atlbase.h>
#include <exdisp.h>

// Structure for Thread Parameters.
typedef struct {
    char szURL[1024];
    HWND hwnd;
} ThreadParam;

// Helper functions.
VOID CreateIEControl(ThreadParam *);
static void WINAPIV StartATL(LPVOID);


JNIEXPORT jint JNICALL Java_MyWindow_getNativeWindowHandle
  (JNIEnv *env, jobject jobj, jobject window)
{

JAWT awt;
awt.version = JAWT_VERSION_1_3;
jboolean result = JAWT_GetAWT(env, &awt);

if (result == JNI_FALSE)
return 0;

JAWT_DrawingSurface* ds = awt.GetDrawingSurface(env, window);

if (ds == 0)
return 0;

jint lock = ds->Lock(ds);

if ((lock & JAWT_LOCK_ERROR) != 0)
return 0;

JAWT_DrawingSurfaceInfo* dsi = ds->GetDrawingSurfaceInfo(ds);

if (dsi == 0)
return 0;

JAWT_Win32DrawingSurfaceInfo* dsiwin = (JAWT_Win32DrawingSurfaceInfo*) dsi->platformInfo;

jint ret = reinterpret_cast<jint>(dsiwin->hwnd);

ds->FreeDrawingSurfaceInfo(dsi);
ds->Unlock(ds);
awt.FreeDrawingSurface(ds);

return ret; 
}



// native method for initializing the control.
JNIEXPORT void JNICALL Java_MyWindow_initialize
  (JNIEnv *pEnv, jobject, jint hwndIn, jstring string)
{
    // Fill up the params.
    const char *str    = pEnv->GetStringUTFChars(string, 0);
    ThreadParam *pThreadParam = new ThreadParam;
    pThreadParam->hwnd = (HWND) hwndIn;
    strcpy(pThreadParam->szURL,str);
    pEnv->ReleaseStringUTFChars(string, str);

    // Launch the Thread.
    _beginthread(StartATL, 0, pThreadParam);
}

// Thread for creating the control 
void WINAPIV StartATL(LPVOID lpVoid)
{
    ThreadParam *pThreadParam = (ThreadParam *)lpVoid;
    CreateIEControl(pThreadParam);
    delete pThreadParam;
    MSG msg;
    // Windows message loop.
    while(GetMessage(&msg, NULL, NULL, NULL))
    {
        TranslateMessage(&msg);
        DispatchMessage(&msg);
    }
}

// Creates IE control
VOID CreateIEControl(ThreadParam *pThreadParam)
{
    AtlAxWinInit();
    printf("Create AtlAxWin Begin...[0x%x][%s]\n",pThreadParam->hwnd,pThreadParam->szURL);
    // In the 2nd Param you can use ProgID or UUID of any activex control.
    HWND hwndChild = ::CreateWindow("AtlAxWin",
                                    "http://www.microsoft.com", 
                                    WS_CHILD|WS_VISIBLE,
                                    0,0,0,0,
                                    pThreadParam->hwnd,NULL,
                                    ::GetModuleHandle(NULL),
                                    NULL);

    IUnknown *pUnk = NULL;
    AtlAxGetControl(hwndChild,&pUnk);
    printf("Create AtlAxWin Done...[0x%x]\n",pUnk);

    // get an interface to set the URL.
    CComPtr<IWebBrowser2> spBrowser;
    pUnk->QueryInterface(IID_IWebBrowser2, (void**)&spBrowser);
    if (spBrowser)
    {
        CComVariant ve;
        CComVariant vurl(pThreadParam->szURL);
#pragma warning(disable: 4310) // cast truncates constant value
        spBrowser->put_Visible(VARIANT_TRUE);
#pragma warning(default: 4310) // cast truncates constant value
        spBrowser->Navigate2(&vurl, &ve, &ve, &ve, &ve);
    }
}

// native method for handling resizes.
JNIEXPORT void JNICALL Java_MyWindow_resizeControl
  (JNIEnv *, jobject, jint hwndIn, jint width, jint height)
{
    HWND hwnd = (HWND) hwndIn;
    RECT rc;
    if(hwnd!=NULL)
    {
        ::GetWindowRect(hwnd,&rc);
        HWND hwndChild = GetWindow(hwnd, GW_CHILD);
        printf("got resize (0x%x,%d,%d)\n",hwndChild,width,height);
        ::SetWindowPos(hwndChild,NULL,0,0,rc.right-rc.left,rc.bottom-rc.top,SWP_NOZORDER|SWP_NOACTIVATE|SWP_SHOWWINDOW|SWP_NOMOVE);
    }
}
----------------------------------------------------------
在编译之前有几件事情得先做一下
1.把刚才得到的MyWindow.h文件复制到工程中
2.把C:\Program Files\Java\j2sdk1.5.0\include和
  C:\Program Files\Java\j2sdk1.5.0\include\win32下的文件复制到
  C:\Program Files\Microsoft Visual Studio\VC98\Include下面
3.把C:\Program Files\Java\j2sdk1.5.0\lib下的jawt.lib复制到
  C:\Program Files\Microsoft Visual Studio\VC98\Lib下
  并在工程-〉设置-〉Link中添加jawt.lib
一切准备就绪按F7进行编译，于是在Debug中得到MyWindow.dll文件
将它复制到你编写的java 应用程序的文件夹中
好了运行MyWindow.class看看结果吧