#include <objsafe.h>//OCX控件在IE8浏览器下不能使用问题

 

一、OCX控件开发常见的问题

1、OCX控件在IE8浏览器下不能使用问题

原因：IE8会拦截OCX控件的方法。

      解决方法：在OCX控件开发时加入安全接口。

    （1）在有”Crtl“字样的头文件”.h“中加入如下代码：

#include <objsafe.h>

        #include <objsafe.h> 

并在头文件类的内部加入如下安全接口，代码如下：

//ISafeObject
    DECLARE_INTERFACE_MAP()
    BEGIN_INTERFACE_PART(ObjSafe, IObjectSafety)
    STDMETHOD_(HRESULT, GetInterfaceSafetyOptions) (
          /* [in] */ REFIID riid,
          /* [out] */ DWORD __RPC_FAR *pdwSupportedOptions,
          /* [out] */ DWORD __RPC_FAR *pdwEnabledOptions
    );
    STDMETHOD_(HRESULT, SetInterfaceSafetyOptions) (
          /* [in] */ REFIID riid,
          /* [in] */ DWORD dwOptionSetMask,
          /* [in] */ DWORD dwEnabledOptions
    );
    END_INTERFACE_PART(ObjSafe);
//ISafeObject

//ISafeObject
	DECLARE_INTERFACE_MAP()
	BEGIN_INTERFACE_PART(ObjSafe, IObjectSafety)
	STDMETHOD_(HRESULT, GetInterfaceSafetyOptions) ( 
	      /* [in] */ REFIID riid,
	      /* [out] */ DWORD __RPC_FAR *pdwSupportedOptions,
	      /* [out] */ DWORD __RPC_FAR *pdwEnabledOptions
	);
	STDMETHOD_(HRESULT, SetInterfaceSafetyOptions) ( 
	      /* [in] */ REFIID riid,
	      /* [in] */ DWORD dwOptionSetMask,
	      /* [in] */ DWORD dwEnabledOptions
	);
	END_INTERFACE_PART(ObjSafe);
//ISafeObject

（2）在有”Ctrl“字样的CPP文件中添加如下代码：注下面类名这里都以”CxxxCtrl“为本例的类名，加入到你代码中请注意替换。

BEGIN_INTERFACE_MAP( CxxxCtrl, COleControl )
INTERFACE_PART(CxxxCtrl, IID_IObjectSafety, ObjSafe)
END_INTERFACE_MAP()

/////////////////////////////////////////////////////////////////////////////
// Dispatch map
// IObjectSafety member functions
ULONG FAR EXPORT CxxxCtrl::XObjSafe::AddRef()
{
    METHOD_PROLOGUE(CxxxCtrl, ObjSafe)
    return pThis->ExternalAddRef();
}
ULONG FAR EXPORT CxxxCtrl::XObjSafe::Release()
{
    METHOD_PROLOGUE(CxxxCtrl, ObjSafe)
    return pThis->ExternalRelease();
}
HRESULT FAR EXPORT CxxxCtrl::XObjSafe::QueryInterface(REFIID iid, void FAR* FAR* ppvObj)
{
    METHOD_PROLOGUE(CxxxCtrl, ObjSafe)
    return (HRESULT)pThis->ExternalQueryInterface(&iid, ppvObj);
}
const DWORD dwSupportedBits = INTERFACESAFE_FOR_UNTRUSTED_CALLER | INTERFACESAFE_FOR_UNTRUSTED_DATA;
const DWORD dwNotSupportedBits = ~ dwSupportedBits;
//.............................................................................
// CxxxCtrl::XObjSafe::GetInterfaceSafetyOptions
// Allows container to query what interfaces are safe for what. We're
// optimizing significantly by ignoring which interface the caller is
HRESULT STDMETHODCALLTYPE CxxxCtrl::XObjSafe::GetInterfaceSafetyOptions(
/* [in] */ REFIID riid,
/* [out] */ DWORD __RPC_FAR *pdwSupportedOptions,
/* [out] */ DWORD __RPC_FAR *pdwEnabledOptions)
{
    METHOD_PROLOGUE(CxxxCtrl, ObjSafe)
    HRESULT retval = ResultFromScode(S_OK);
    // does interface exist?
    IUnknown FAR* punkInterface;
    retval = pThis->ExternalQueryInterface(&riid, (void * *)&punkInterface);
    if (retval != E_NOINTERFACE) { // interface exists
        punkInterface->Release(); // release it--just checking!
    }
    // we support both kinds of safety and have always both set,
    // regardless of interface
    *pdwSupportedOptions = *pdwEnabledOptions = dwSupportedBits;
    return retval; // E_NOINTERFACE if QI failed
}
/////////////////////////////////////////////////////////////////////////////
// CxxxCtrl::XObjSafe::SetInterfaceSafetyOptions
// Since we're always safe, this is a no-brainer--but we do check to make
// sure the interface requested exists and that the options we're asked to
// set exist and are set on (we don't support unsafe mode).
HRESULT STDMETHODCALLTYPE CxxxCtrl::XObjSafe::SetInterfaceSafetyOptions(
/* [in] */ REFIID riid,
/* [in] */ DWORD dwOptionSetMask,
/* [in] */ DWORD dwEnabledOptions)
{
        METHOD_PROLOGUE(CxxxCtrl, ObjSafe)
        // does interface exist?
    IUnknown FAR* punkInterface;
    pThis->ExternalQueryInterface(&riid, (void * *)&punkInterface);
    if (punkInterface) { // interface exists
        punkInterface->Release(); // release it--just checking!
    }else
    {
        // interface doesn't exist
        return ResultFromScode(E_NOINTERFACE);
    }
        // can't set bits we don't support
    if (dwOptionSetMask & dwNotSupportedBits) {
        return ResultFromScode(E_FAIL);
    }
        // can't set bits we do support to zero
    dwEnabledOptions &= dwSupportedBits;
        // (we already know there are no extra bits in mask )
    if ((dwOptionSetMask & dwEnabledOptions) != dwOptionSetMask) {
        return ResultFromScode(E_FAIL);
    }
        // don't need to change anything since we're always safe
    return ResultFromScode(S_OK);
}

BEGIN_INTERFACE_MAP( CxxxCtrl, COleControl )
INTERFACE_PART(CxxxCtrl, IID_IObjectSafety, ObjSafe)
END_INTERFACE_MAP()

/////////////////////////////////////////////////////////////////////////////
// Dispatch map
// IObjectSafety member functions
ULONG FAR EXPORT CxxxCtrl::XObjSafe::AddRef()
{
    METHOD_PROLOGUE(CxxxCtrl, ObjSafe)
	return pThis->ExternalAddRef();
}
ULONG FAR EXPORT CxxxCtrl::XObjSafe::Release()
{
    METHOD_PROLOGUE(CxxxCtrl, ObjSafe)
	return pThis->ExternalRelease();
}
HRESULT FAR EXPORT CxxxCtrl::XObjSafe::QueryInterface(REFIID iid, void FAR* FAR* ppvObj)
{
    METHOD_PROLOGUE(CxxxCtrl, ObjSafe)
	return (HRESULT)pThis->ExternalQueryInterface(&iid, ppvObj);
}
const DWORD dwSupportedBits = INTERFACESAFE_FOR_UNTRUSTED_CALLER | INTERFACESAFE_FOR_UNTRUSTED_DATA;
const DWORD dwNotSupportedBits = ~ dwSupportedBits;
//.............................................................................
// CxxxCtrl::XObjSafe::GetInterfaceSafetyOptions
// Allows container to query what interfaces are safe for what. We're
// optimizing significantly by ignoring which interface the caller is
HRESULT STDMETHODCALLTYPE CxxxCtrl::XObjSafe::GetInterfaceSafetyOptions( 
/* [in] */ REFIID riid,
/* [out] */ DWORD __RPC_FAR *pdwSupportedOptions,
/* [out] */ DWORD __RPC_FAR *pdwEnabledOptions)
{
	METHOD_PROLOGUE(CxxxCtrl, ObjSafe)
	HRESULT retval = ResultFromScode(S_OK);
	// does interface exist?
	IUnknown FAR* punkInterface;
	retval = pThis->ExternalQueryInterface(&riid, (void * *)&punkInterface);
	if (retval != E_NOINTERFACE) { // interface exists
		punkInterface->Release(); // release it--just checking!
	}
	// we support both kinds of safety and have always both set,
	// regardless of interface
	*pdwSupportedOptions = *pdwEnabledOptions = dwSupportedBits;
	return retval; // E_NOINTERFACE if QI failed
}
/////////////////////////////////////////////////////////////////////////////
// CxxxCtrl::XObjSafe::SetInterfaceSafetyOptions
// Since we're always safe, this is a no-brainer--but we do check to make
// sure the interface requested exists and that the options we're asked to
// set exist and are set on (we don't support unsafe mode).
HRESULT STDMETHODCALLTYPE CxxxCtrl::XObjSafe::SetInterfaceSafetyOptions( 
/* [in] */ REFIID riid,
/* [in] */ DWORD dwOptionSetMask,
/* [in] */ DWORD dwEnabledOptions)
{
        METHOD_PROLOGUE(CxxxCtrl, ObjSafe)
        // does interface exist?
	IUnknown FAR* punkInterface;
	pThis->ExternalQueryInterface(&riid, (void * *)&punkInterface);
	if (punkInterface) { // interface exists
		punkInterface->Release(); // release it--just checking!
	}else 
	{ 
		// interface doesn't exist
		return ResultFromScode(E_NOINTERFACE);
	} 
        // can't set bits we don't support
	if (dwOptionSetMask & dwNotSupportedBits) { 
		return ResultFromScode(E_FAIL);
	} 
        // can't set bits we do support to zero
	dwEnabledOptions &= dwSupportedBits;
        // (we already know there are no extra bits in mask )
	if ((dwOptionSetMask & dwEnabledOptions) != dwOptionSetMask) {
		return ResultFromScode(E_FAIL);
	}         
        // don't need to change anything since we're always safe
	return ResultFromScode(S_OK);
}

如果加安全代码后，还是不能正常加载，那你要确认一下，你的操作系统是64位系统吗？若是，再看一下你IE是不是也使用64位的。若是的话，那就没有办法了，我在前面的博文中已经说明了，64位的IE是不支持32位OCX控件，请使用更高的IE版本调试或者。。。建议使用IE10及以上，IE9也同样存在这样的问题。如果不是，那你再看一下找一下其他原因，或者在评论中阐述你的问题出现的现象，博友们一起帮你研究与解决。

2、OCX控件引入对话框界面后，OCX控件无法响应键盘”backspack“键。

原因：IE浏览器截获该事件，出现一按”backpack“键，网页就回退，无法正常在OCX控件上操作。

解决方法：有两种，一使用MFC中的钩子方法（不推荐，本文不详细解说），另一种是OCX控件中添加处理事件的函数来处理，具体说明请查看官网  http://support.microsoft.com/kb/168777/nl    

（1）在”Ctrl“的字样的头文件上加入如下三个函数声明及一个鼠标事件。

virtual BOOL OnWndMsg(UINT message, WPARAM wParam, LPARAM lParam, LRESULT* pResult);
HRESULT OnActivateInPlace(BOOL bUIActivate, LPMSG pMsg);
BOOL PreTranslateMessage(MSG* pMsg);

	virtual BOOL OnWndMsg(UINT message, WPARAM wParam, LPARAM lParam, LRESULT* pResult);
	HRESULT OnActivateInPlace(BOOL bUIActivate, LPMSG pMsg);
	BOOL PreTranslateMessage(MSG* pMsg);

      一个鼠标事件 afx_msg int OnMouseActivate(CWnd* pDesktopWnd, UINT nHitTest, UINT message); 

（2）在”Ctrl“字样的CPP文件中加入如下代码：

BOOL CxxxCtrl::OnWndMsg(UINT message, WPARAM wParam, LPARAM lParam, LRESULT *pResult)
{
    switch (message)
    {
    case WM_REPORT_BATCHWRITEPU_CLOSEFLAGE:
        this->FireSetCloseFlag((short)wParam);
        break;
    }
    return COleControl::OnWndMsg(message, wParam, lParam, pResult);
}
HRESULT CxxxCtrl::OnActivateInPlace(BOOL bUIActivate, LPMSG pMsg)
{
    static BOOL bInsideFunc = FALSE;
    if (!bInsideFunc)
    {
        bInsideFunc = TRUE;
        HRESULT hr = COleControl::OnActivateInPlace(bUIActivate, pMsg);
        bInsideFunc = FALSE;
        return hr;
    }
    return S_OK;
}
BOOL CxxxCtrl::PreTranslateMessage(MSG* pMsg)
{
    switch (pMsg->message)
    {
    case WM_KEYDOWN:
    case WM_KEYUP:
        switch (pMsg->wParam)
        {
        case VK_UP:
        case VK_DOWN:
        case VK_LEFT:
        case VK_RIGHT:
        case VK_HOME:
        case VK_END:
            ::SendMessage (GetFocus()->GetSafeHwnd(), pMsg->message, pMsg->wParam, pMsg->lParam);
            return TRUE;
        }
        break;
    }
    return COleControl::PreTranslateMessage(pMsg);
}

BOOL CxxxCtrl::OnWndMsg(UINT message, WPARAM wParam, LPARAM lParam, LRESULT *pResult)
{
	switch (message)
	{
	case WM_REPORT_BATCHWRITEPU_CLOSEFLAGE:
		this->FireSetCloseFlag((short)wParam);
		break;
	}
	return COleControl::OnWndMsg(message, wParam, lParam, pResult);
}
HRESULT CxxxCtrl::OnActivateInPlace(BOOL bUIActivate, LPMSG pMsg)
{
	static BOOL bInsideFunc = FALSE;
	if (!bInsideFunc)
	{
		bInsideFunc = TRUE;
		HRESULT hr = COleControl::OnActivateInPlace(bUIActivate, pMsg);
		bInsideFunc = FALSE;
		return hr;
	}
	return S_OK;
}
BOOL CxxxCtrl::PreTranslateMessage(MSG* pMsg) 
{
	switch (pMsg->message)
	{
	case WM_KEYDOWN:
	case WM_KEYUP:
		switch (pMsg->wParam)
		{
		case VK_UP:
		case VK_DOWN:
		case VK_LEFT:
		case VK_RIGHT:
		case VK_HOME:
		case VK_END:
			::SendMessage (GetFocus()->GetSafeHwnd(), pMsg->message, pMsg->wParam, pMsg->lParam);
			return TRUE;
		}
		break;
	}
	return COleControl::PreTranslateMessage(pMsg);
}  

并加入鼠标事件处理：

int <span style="font-family: Arial, Helvetica, sans-serif;">CxxxCtrl</span>::OnMouseActivate(CWnd* pDesktopWnd, UINT nHitTest, UINT message)
{
    // TODO: Add your message handler code here and/or call default
    OnActivateInPlace(TRUE, NULL); //事件加入后，请加入此行代码。
    return COleControl::OnMouseActivate(pDesktopWnd, nHitTest, message);
}

int <span style="font-family: Arial, Helvetica, sans-serif;">CxxxCtrl</span>::OnMouseActivate(CWnd* pDesktopWnd, UINT nHitTest, UINT message) 
{
	// TODO: Add your message handler code here and/or call default	
	OnActivateInPlace(TRUE, NULL); //事件加入后，请加入此行代码。
	return COleControl::OnMouseActivate(pDesktopWnd, nHitTest, message);
}

并OnCreate事件上也加上  

OnActivateInPlace(TRUE, NULL);

OnActivateInPlace(TRUE, NULL); 

该代码，记得在你的对话框创建前。

3、其他一些问题如果你遇上了，请看一下下面一篇博文，看看是不是有解决方案在其中。博文地址：http://blog.csdn.NET/xiaoxiaoyu85/article/details/6821205