#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：

1. #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：

1. //ISafeObject
2. DECLARE_INTERFACE_MAP()
3. BEGIN_INTERFACE_PART(ObjSafe, IObjectSafety)
4. STDMETHOD_(HRESULT, GetInterfaceSafetyOptions) (
5. /* [in] */ REFIID riid,
6. /* [out] */ DWORD __RPC_FAR *pdwSupportedOptions,
7. /* [out] */ DWORD __RPC_FAR *pdwEnabledOptions
8. );
9. STDMETHOD_(HRESULT, SetInterfaceSafetyOptions) (
10. /* [in] */ REFIID riid,
11. /* [in] */ DWORD dwOptionSetMask,
12. /* [in] */ DWORD dwEnabledOptions
13. );
14. END_INTERFACE_PART(ObjSafe);
15. //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。

1. BEGIN_INTERFACE_MAP( CxxxCtrl, COleControl )
2. INTERFACE_PART(CxxxCtrl, IID_IObjectSafety, ObjSafe)
3. END_INTERFACE_MAP()
4. /////////////////////////////////////////////////////////////////////////////
5. // Dispatch map
6. // IObjectSafety member functions
7. ULONG FAR EXPORT CxxxCtrl::XObjSafe::AddRef()
8. {
9. METHOD_PROLOGUE(CxxxCtrl, ObjSafe)
10. return pThis->ExternalAddRef();
11. }
12. ULONG FAR EXPORT CxxxCtrl::XObjSafe::Release()
13. {
14. METHOD_PROLOGUE(CxxxCtrl, ObjSafe)
15. return pThis->ExternalRelease();
16. }
17. HRESULT FAR EXPORT CxxxCtrl::XObjSafe::QueryInterface(REFIID iid, void FAR* FAR* ppvObj)
18. {
19. METHOD_PROLOGUE(CxxxCtrl, ObjSafe)
20. return (HRESULT)pThis->ExternalQueryInterface(&iid, ppvObj);
21. }
22. const DWORD dwSupportedBits = INTERFACESAFE_FOR_UNTRUSTED_CALLER | INTERFACESAFE_FOR_UNTRUSTED_DATA;
23. const DWORD dwNotSupportedBits = ~ dwSupportedBits;
24. //.............................................................................
25. // CxxxCtrl::XObjSafe::GetInterfaceSafetyOptions
26. // Allows container to query what interfaces are safe for what. We're
27. // optimizing significantly by ignoring which interface the caller is
28. HRESULT STDMETHODCALLTYPE CxxxCtrl::XObjSafe::GetInterfaceSafetyOptions(
29. /* [in] */ REFIID riid,
30. /* [out] */ DWORD __RPC_FAR *pdwSupportedOptions,
31. /* [out] */ DWORD __RPC_FAR *pdwEnabledOptions)
32. {
33. METHOD_PROLOGUE(CxxxCtrl, ObjSafe)
34. HRESULT retval = ResultFromScode(S_OK);
35. // does interface exist?
36. IUnknown FAR* punkInterface;
37. retval = pThis->ExternalQueryInterface(&riid, (void * *)&punkInterface);
38. if (retval != E_NOINTERFACE) { // interface exists
39. punkInterface->Release(); // release it--just checking!
40. }
41. // we support both kinds of safety and have always both set,
42. // regardless of interface
43. *pdwSupportedOptions = *pdwEnabledOptions = dwSupportedBits;
44. return retval; // E_NOINTERFACE if QI failed
45. }
46. /////////////////////////////////////////////////////////////////////////////
47. // CxxxCtrl::XObjSafe::SetInterfaceSafetyOptions
48. // Since we're always safe, this is a no-brainer--but we do check to make
49. // sure the interface requested exists and that the options we're asked to
50. // set exist and are set on (we don't support unsafe mode).
51. HRESULT STDMETHODCALLTYPE CxxxCtrl::XObjSafe::SetInterfaceSafetyOptions(
52. /* [in] */ REFIID riid,
53. /* [in] */ DWORD dwOptionSetMask,
54. /* [in] */ DWORD dwEnabledOptions)
55. {
56. METHOD_PROLOGUE(CxxxCtrl, ObjSafe)
57. // does interface exist?
58. IUnknown FAR* punkInterface;
59. pThis->ExternalQueryInterface(&riid, (void * *)&punkInterface);
60. if (punkInterface) { // interface exists
61. punkInterface->Release(); // release it--just checking!
62. }else
63. {
64. // interface doesn't exist
65. return ResultFromScode(E_NOINTERFACE);
66. }
67. // can't set bits we don't support
68. if (dwOptionSetMask & dwNotSupportedBits) {
69. return ResultFromScode(E_FAIL);
70. }
71. // can't set bits we do support to zero
72. dwEnabledOptions &= dwSupportedBits;
73. // (we already know there are no extra bits in mask )
74. if ((dwOptionSetMask & dwEnabledOptions) != dwOptionSetMask) {
75. return ResultFromScode(E_FAIL);
76. }
77. // don't need to change anything since we're always safe
78. return ResultFromScode(S_OK);
79. }

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。

1. virtual BOOL OnWndMsg(UINT message, WPARAM wParam, LPARAM lParam, LRESULT* pResult);
2. HRESULT OnActivateInPlace(BOOL bUIActivate, LPMSG pMsg);
3. 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：

1. BOOL CxxxCtrl::OnWndMsg(UINT message, WPARAM wParam, LPARAM lParam, LRESULT *pResult)
2. {
3. switch (message)
4. {
5. case WM_REPORT_BATCHWRITEPU_CLOSEFLAGE:
6. this->FireSetCloseFlag((short)wParam);
7. break;
8. }
9. return COleControl::OnWndMsg(message, wParam, lParam, pResult);
10. }
11. HRESULT CxxxCtrl::OnActivateInPlace(BOOL bUIActivate, LPMSG pMsg)
12. {
13. static BOOL bInsideFunc = FALSE;
14. if (!bInsideFunc)
15. {
16. bInsideFunc = TRUE;
17. HRESULT hr = COleControl::OnActivateInPlace(bUIActivate, pMsg);
18. bInsideFunc = FALSE;
19. return hr;
20. }
21. return S_OK;
22. }
23. BOOL CxxxCtrl::PreTranslateMessage(MSG* pMsg)
24. {
25. switch (pMsg->message)
26. {
27. case WM_KEYDOWN:
28. case WM_KEYUP:
29. switch (pMsg->wParam)
30. {
31. case VK_UP:
32. case VK_DOWN:
33. case VK_LEFT:
34. case VK_RIGHT:
35. case VK_HOME:
36. case VK_END:
37. ::SendMessage (GetFocus()->GetSafeHwnd(), pMsg->message, pMsg->wParam, pMsg->lParam);
38. return TRUE;
39. }
40. break;
41. }
42. return COleControl::PreTranslateMessage(pMsg);
43. }

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：

1. int <span style="font-family: Arial, Helvetica, sans-serif;">CxxxCtrl</span>::OnMouseActivate(CWnd* pDesktopWnd, UINT nHitTest, UINT message)
2. {
3. // TODO: Add your message handler code here and/or call default
4. OnActivateInPlace(TRUE, NULL); //事件加入后，请加入此行代码。
5. return COleControl::OnMouseActivate(pDesktopWnd, nHitTest, message);
6. }

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

1. 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