WPF选择文件夹对话框，支持快捷方式

Various File Dialog Header definitions (from shobjidl.idl in the SDK) --------------------------------------------------------------------- typedef [ helpstring("Constants for the type of usage of an open file") ] enum tagFILE_USAGE_TYPE { FUT_PLAYING, FUT_EDITING, FUT_GENERIC } FILE_USAGE_TYPE; cpp_quote("#define OF_CAP_CANSWITCHTO 0x0001") cpp_quote("#define OF_CAP_CANCLOSE 0x0002") [ uuid(64a1cbf0-3a1a-4461-9158-376969693950), pointer_default(unique) ] interface IFileIsInUse : IUnknown { HRESULT GetAppName([out, string] LPWSTR *ppszName); HRESULT GetUsage([out] FILE_USAGE_TYPE *pfut); HRESULT GetCapabilities([out] DWORD *pdwCapFlags); HRESULT GetSwitchToHWND([out] HWND *phwnd); HRESULT CloseFile(); } interface IFileDialog; typedef [v1_enum] enum tagFDE_OVERWRITE_RESPONSE { FDEOR_DEFAULT = 0x00000000, // The application has not handled the event, and the dialog should put up UI asking the user // whether or not the file should be overwritten and be returned from the dialog FDEOR_ACCEPT = 0x00000001, // The application has decided that the file should be returned from the dialog FDEOR_REFUSE = 0x00000002, // The application has decided that the file should not be returned from the dialog } FDE_OVERWRITE_RESPONSE; typedef [v1_enum] enum tagFDE_SHAREVIOLATION_RESPONSE { FDESVR_DEFAULT = 0x00000000, // The application has not handled the event. The dialog will put up UI indicating the file // is in use, and a different file must be chosen. FDESVR_ACCEPT = 0x00000001, // The application has decided that the file should be returned from the dialog FDESVR_REFUSE = 0x00000002, // The application has decided that the file should not be returned from the dialog } FDE_SHAREVIOLATION_RESPONSE; typedef [v1_enum] enum tagFDAP { FDAP_BOTTOM = 0x00000000, // The place is added to the bottom of the default list. FDAP_TOP = 0x00000001, // The place is added to the top of the default list. } FDAP; // // Implemented by a client of the common file dialog browser, // for notification of events within the dialog. // [ uuid(973510db-7d7f-452b-8975-74a85828d354), object, pointer_default(unique) ] interface IFileDialogEvents : IUnknown { HRESULT OnFileOk([in] IFileDialog *pfd); HRESULT OnFolderChanging([in] IFileDialog *pfd, [in] IShellItem *psiFolder); HRESULT OnFolderChange([in] IFileDialog *pfd); HRESULT OnSelectionChange([in] IFileDialog *pfd); // Note: FOS_SHAREAWARE must be set in IFileDialog::SetOptions in order for this method to be called. HRESULT OnShareViolation([in] IFileDialog *pfd, [in] IShellItem *psi, [out] FDE_SHAREVIOLATION_RESPONSE *pResponse); HRESULT OnTypeChange([in] IFileDialog *pfd); // Note: FOS_OVERWRITEPROMPT must be set in IFileDialog::SetOptions in order for this method to be called. HRESULT OnOverwrite([in] IFileDialog *pfd, [in] IShellItem *psi, [out] FDE_OVERWRITE_RESPONSE *pResponse); } // Event notifications from the controls, handled by an interface // optionally implemented by the same IFileDialogEvents object supplied by the app. [ uuid(36116642-D713-4b97-9B83-7484A9D00433), object, pointer_default(unique) ] interface IFileDialogControlEvents : IUnknown { // An item in a combobox, toolsmenu, or radiobutton group was selected. // (this notification is *not* sent when an item is chosen from the open dropdown, // as the action here is always the same: close the dialog as if the user clicked open. // At that point, the app will then be able to call GetSelectedItem() for the open dropdown, to // obtain the item that was chosen). HRESULT OnItemSelected([in] IFileDialogCustomize *pfdc, [in] DWORD dwIDCtl, [in] DWORD dwIDItem); // A pushbutton was clicked. HRESULT OnButtonClicked([in] IFileDialogCustomize *pfdc, [in] DWORD dwIDCtl); // A checkbutton was toggled. HRESULT OnCheckButtonToggled([in] IFileDialogCustomize *pfdc, [in] DWORD dwIDCtl, [in] BOOL bChecked); // A combobox, toolsmenu or open dropdown is about to be "dropped down". At this point, // the application may want to update the contents based on the current state of the dialog. HRESULT OnControlActivating([in] IFileDialogCustomize *pfdc, [in] DWORD dwIDCtl); } interface IShellItemFilter; // // Implemented by the common file dialog browser, used by clients to // initialize, show, and get results from the dialog. // // // Implemented by the common file dialog browser, used by clients to // initialize, show, and get results from the dialog. // [ uuid(42f85136-db7e-439c-85f1-e4075d135fc8), object, pointer_default(unique) ] interface IFileDialog : IModalWindow { enum tagFILEOPENDIALOGOPTIONS { FOS_OVERWRITEPROMPT = 0x00000002, FOS_STRICTFILETYPES = 0x00000004, FOS_NOCHANGEDIR = 0x00000008, FOS_PICKFOLDERS = 0x00000020, FOS_FORCEFILESYSTEM = 0x00000040, // Ensure that items returned are filesystem items. FOS_ALLNONSTORAGEITEMS = 0x00000080, // Allow choosing items that have no storage. FOS_NOVALIDATE = 0x00000100, FOS_ALLOWMULTISELECT = 0x00000200, FOS_PATHMUSTEXIST = 0x00000800, FOS_FILEMUSTEXIST = 0x00001000, FOS_CREATEPROMPT = 0x00002000, FOS_SHAREAWARE = 0x00004000, FOS_NOREADONLYRETURN = 0x00008000, FOS_NOTESTFILECREATE = 0x00010000, FOS_HIDEMRUPLACES = 0x00020000, FOS_HIDEPINNEDPLACES = 0x00040000, FOS_NODEREFERENCELINKS = 0x00100000, FOS_DONTADDTORECENT = 0x02000000, FOS_FORCESHOWHIDDEN = 0x10000000, FOS_DEFAULTNOMINIMODE = 0x20000000 }; HRESULT SetFileTypes([in] UINT cFileTypes, [in, size_is(cFileTypes)] const COMDLG_FILTERSPEC *rgFilterSpec); HRESULT SetFileTypeIndex([in] UINT iFileType); HRESULT GetFileTypeIndex([out] UINT *piFileType); HRESULT Advise([in] IFileDialogEvents *pfde, [out] DWORD *pdwCookie); HRESULT Unadvise([in] DWORD dwCookie); HRESULT SetOptions([in] DWORD fos); HRESULT GetOptions([out] DWORD *pfos); HRESULT SetDefaultFolder([in] IShellItem *psi); HRESULT SetFolder([in] IShellItem *psi); HRESULT GetFolder([out] IShellItem **ppsi); HRESULT GetCurrentSelection([out] IShellItem **ppsi); HRESULT SetFileName([in, string] LPCWSTR pszName); HRESULT GetFileName([out, string] LPWSTR *pszName); HRESULT SetTitle([in, string] LPCWSTR pszTitle); HRESULT SetOkButtonLabel([in, string] LPCWSTR pszText); HRESULT SetFileNameLabel([in, string] LPCWSTR pszLabel); HRESULT GetResult([out] IShellItem **ppsi); HRESULT AddPlace([in] IShellItem *psi, FDAP fdap); HRESULT SetDefaultExtension([in] LPCWSTR pszDefaultExtension); HRESULT Close(HRESULT hr); HRESULT SetClientGuid([in] REFGUID guid); HRESULT ClearClientData(); HRESULT SetFilter(IShellItemFilter *pFilter); } // // Additional methods specific to the file save dialog // [ uuid(84bccd23-5fde-4cdb-aea4-af64b83d78ab), object, pointer_default(unique) ] interface IFileSaveDialog : IFileDialog { HRESULT SetSaveAsItem([in] IShellItem *psi); HRESULT SetProperties([in] IPropertyStore *pStore); HRESULT SetCollectedProperties([in] IPropertyDescriptionList *pList, [in] BOOL fAppendDefault); HRESULT GetProperties([out] IPropertyStore **ppStore); HRESULT ApplyProperties([in