动态添加 ActiveX 控件添加到 ATL 复合控件

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如何将 ActiveX 控件添加到 ATL 复合控件以编程方式在 Visual C++

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概要

本文介绍如何以编程方式将 ActiveX 控件添加到 ATL 复合控件。这些技术还可用于动态创建任何窗口上的 ActiveX 控件。

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更多信息

WM_INITDIALOG 处理程序中以编程方式将 ActiveX 控件添加到 ATL 复合控件的好地方。将下面的消息映射项并处理程序函数添加到 CComCompositeControl 派生类。

MESSAGE_HANDLER(WM_INITDIALOG, OnInitDialog)

LRESULT OnInitDialog(UINT uMsg, WPARAM wParam, LPARAM lParam, 
   BOOL& bHandled)
{
   return 0;
}
				

现在可以使用以下方法之一来在 WM_INITDIALOG 的消息处理程序中以编程方式添加控件。CAxWindow 类是只是一个包装类。当超出范围时，它不会销毁相应的 ActiveX 控件，以便可以在堆栈上声明它。通过将其作为成员的复合控件的类，您可以使用 cwindow 外的方便的包装函数 (CAxWindow 派生自 cwindow 外）。此外，在下列 ATL 创建 ProgID 的功能可以被替换 CLSID 或 URL。CAxWindow::CreateControl() 联机文档的详细信息，请参阅。若要获取的控件或容器接口，请使用 QueryControl() 和 QueryHost() 的 CAxWindow 成员或 AtlAxGetControl() 和 AtlAxGetHost() 的全局函数。

// 
// WIN32 API CreateWindow() method
// 

//register AtlAxWin class which implements ATL containment
//this is not needed for an ATL composite control
AtlAxWinInit();
//m_hWnd is the composite control handle<BR/>
//IDC_MYCTL is an ID that was added through the "View/Resource Symbols"
//menu option.
HWND hWnd = ::CreateWindow(_T("AtlAxWin"), _T("MSCAL.Calendar"), 
	WS_CHILD|WS_VISIBLE, 10, 10, 400, 300,  m_hWnd, 
	(HMENU)IDC_MYCTL, _Module.GetModuleInstance(), NULL);
// make sure module handle corresponds to module in which 'AtlAxWin'
// class is registered.  
				

-或-

// 
// CAxWindow::Create() method
// 

//register the AtlAxWin class which implements ATL containment
//this is not needed for an ATL composite control
AtlAxWinInit();
CAxWindow wnd;
RECT rect = {10,10,400,300};
//m_hWnd is the composite control handle
//rect is the size of ActiveX control in client coordinates
wnd.Create(m_hWnd, rect, _T("MSCAL.Calendar"), 
	WS_CHILD|WS_VISIBLE, 0, IDC_MYCTL); 
				

如果需要初始化 ActiveX 控件的属性，可以使用以下 2 方法：

// 
// CAxWindow::CreateControl() method
// 

// m_hWnd is usually the HWND of the activex controls' parent
CAxWindow wnd;
wnd.Attach(m_hWnd);
// Since CreateControl does not take a RECT param, the ActiveX
// control occupies the full area of the window. m_pStream is an IStream
// pointer containing the control's persisted properties
wnd.CreateControl(OLESTR("MSCAL.Calendar"), m_pStream); 
// CreateControl[Ex] in turn just calls AtlAxCreateControl[Ex].
// So AltCreateControl[Ex]() could also be called directly.
// For example the above call would be
// AtlAxCreateControl(OLESTR("MSCAL.Calendar"), m_hwnd, m_pStream, NULL)
				

-或-

// 
// CAxWindow::CreateControlEx() method
// 

// CreateControlEx in addition to initializing properties, also
// allows you to specify a sink interface for events.
// m_hWnd is usually the HWND of the ActiveX control's parent.
CAxWindow wnd;
wnd.Attach(m_hWnd);
// control & container IUnknown interface pointers
LPUNKNOWN pUnkCtrl, pUnkCont;
// Since CreateControl does not take a RECT param, the ActiveX
// control occupies the full area of the window. DIID_DCalendarEvents is 
// the soruce interface ID of the calendar control and m_pSink is a 
// pointer to the sink object. For information on creating sinks 
// please refer to knowledge base article Q194179 
wnd.CreateControlEx(OLESTR("MSCAL.Calendar"), m_pStream, &pUnkCtrl,
        &pUnkCont, DIID_DCalendarEvents, (IUnknown*)m_pSink);
				

-或-

// 
// CAxWindow::AttachControl method
// 

// This method is used to create the ActiveX control and activate
// it in 2 separate steps. m_hWnd is usually the HWND of the 
// ActiveX control's parent.
CAxWindow wnd;
CLSID clsid;
LPUNKNOWN pUnkCtrl, pUnkCont;
HRESULT hr = CLSIDFromProgID(OLESTR("MSCAL.Calendar"), &clsid);
hr = CoCreateInstance(clsid, NULL, CLSCTX_ALL, IID_IUnknown,
        (void**)&pUnkCtrl);
CComQIPtr <IPersistStreamInit> spPerStm(pUnkCtrl);
spPerStm->InitNew();
wnd.Attach(m_hWnd);
wnd.AttachControl(pUnkCtrl, &pUnkCont);
				

-或-

// 
// IAxWinHostWindow method
// 

// CAxWindow methods CreateControl[Ex] & AttachControl eventually call
// methods of IAxWinHostWindow. These methods can be called directly.
CAxWindow wnd;
RECT rect = {10,10,400,300};

// create the container window
wnd.Create(m_hWnd, rect, 0, WS_CHILD|WS_VISIBLE, 0, IDC_MYCTL);
CComPtr<IAxWinHostWindow> spHostWnd;
wnd.QueryHost(&spHostWnd);
// create the activex control
spHostWnd->CreateControl(OLESTR("MSCAL.Calendar"), wnd, NULL);
// Alternatively you could call CreateControlEx() or AttachControl()
// methods of IAxWinHostWindow as in previous examples.
				

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参考

VC + + 联机文档

有关详细信息，请单击下面的文章编号，以查看 Microsoft 知识库中相应的文章：

192560如何向添加 ATL 控件包容支持任何窗口

194179示例： AtlEvnt.exe 创建 ATL 接收器使用 IDispEventImpl