#include //OCX控件在IE8浏览器下不能使用问题

2022-03-20 14:57:21

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

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