96 lines
4.1 KiB
C
96 lines
4.1 KiB
C
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//------------------------------------------------------------------------------
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// File: CProp.h
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//
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// Desc: DirectShow base classes.
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//
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// Copyright (c) 1992-2001 Microsoft Corporation. All rights reserved.
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//------------------------------------------------------------------------------
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#ifndef __CPROP__
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#define __CPROP__
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// Base property page class. Filters typically expose custom properties by
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// implementing special control interfaces, examples are IDirectDrawVideo
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// and IQualProp on renderers. This allows property pages to be built that
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// use the given interface. Applications such as the ActiveMovie OCX query
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// filters for the property pages they support and expose them to the user
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//
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// This class provides all the framework for a property page. A property
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// page is a COM object that supports IPropertyPage. We should be created
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// with a resource ID for the dialog which we will load when required. We
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// should also be given in the constructor a resource ID for a title string
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// we will load from the DLLs STRINGTABLE. The property page titles must be
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// stored in resource files so that they can be easily internationalised
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//
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// We have a number of virtual methods (not PURE) that may be overriden in
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// derived classes to query for interfaces and so on. These functions have
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// simple implementations here that just return NOERROR. Derived classes
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// will almost definately have to override the message handler method called
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// OnReceiveMessage. We have a static dialog procedure that calls the method
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// so that derived classes don't have to fiddle around with the this pointer
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class AM_NOVTABLE CBasePropertyPage : public IPropertyPage, public CUnknown
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{
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protected:
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LPPROPERTYPAGESITE m_pPageSite; // Details for our property site
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HWND m_hwnd; // Window handle for the page
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HWND m_Dlg; // Actual dialog window handle
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BOOL m_bDirty; // Has anything been changed
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int m_TitleId; // Resource identifier for title
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int m_DialogId; // Dialog resource identifier
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static INT_PTR CALLBACK DialogProc(HWND hwnd,
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UINT uMsg,
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WPARAM wParam,
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LPARAM lParam);
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private:
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BOOL m_bObjectSet ; // SetObject has been called or not.
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public:
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CBasePropertyPage(TCHAR *pName, // Debug only name
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LPUNKNOWN pUnk, // COM Delegator
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int DialogId, // Resource ID
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int TitleId); // To get tital
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#ifdef UNICODE
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CBasePropertyPage(CHAR *pName,
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LPUNKNOWN pUnk,
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int DialogId,
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int TitleId);
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#endif
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virtual ~CBasePropertyPage() { };
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DECLARE_IUNKNOWN
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// Override these virtual methods
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virtual HRESULT OnConnect(IUnknown *pUnknown) { return NOERROR; };
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virtual HRESULT OnDisconnect() { return NOERROR; };
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virtual HRESULT OnActivate() { return NOERROR; };
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virtual HRESULT OnDeactivate() { return NOERROR; };
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virtual HRESULT OnApplyChanges() { return NOERROR; };
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virtual INT_PTR OnReceiveMessage(HWND hwnd,UINT uMsg,WPARAM wParam,LPARAM lParam);
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// These implement an IPropertyPage interface
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STDMETHODIMP NonDelegatingQueryInterface(REFIID riid,void **ppv);
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STDMETHODIMP_(ULONG) NonDelegatingRelease();
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STDMETHODIMP_(ULONG) NonDelegatingAddRef();
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STDMETHODIMP SetPageSite(LPPROPERTYPAGESITE pPageSite);
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STDMETHODIMP Activate(HWND hwndParent,LPCRECT prect,BOOL fModal);
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STDMETHODIMP Deactivate(void);
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STDMETHODIMP GetPageInfo(LPPROPPAGEINFO pPageInfo);
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STDMETHODIMP SetObjects(ULONG cObjects, LPUNKNOWN *ppUnk);
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STDMETHODIMP Show(UINT nCmdShow);
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STDMETHODIMP Move(LPCRECT prect);
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STDMETHODIMP IsPageDirty(void) { return m_bDirty ? S_OK : S_FALSE; }
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STDMETHODIMP Apply(void);
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STDMETHODIMP Help(LPCWSTR lpszHelpDir) { return E_NOTIMPL; }
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STDMETHODIMP TranslateAccelerator(LPMSG lpMsg) { return E_NOTIMPL; }
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};
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#endif // __CPROP__
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