I am trying to use Microsoft's RealTimeStylus COM classes from Python.
I want to access the RealTimeStylus object, and I want to create
Python objects that support the IStylusAsyncPlugin. The difficulty is
that there is no type library specifying the relevant interfaces, nor
is there an IDL file. All I can find are Microsoft's C/C++ header
files in the Windows 7 SDK. My registry has an entry for the CLSID for
RealTimeStylus, but it doesn't have entries for the interfaces
IRealTimeStylus or IStylusAsyncPlugin.
I know very little about COM, but it seems to me that I should be able
to read through the C/C++ header files for the relevant COM
interfaces, and write a Python equivalent. (I don't think I can use
makepy because there is no type library, and I don't think I can use
the Dispatch approach because (a) RealTimeStylus does not implement
IDispatch and (b) that's no use anyway for server COM.)
I know very little about IDL and about COM, and I have no idea how to
go about translating the C/C++ header files into Python. I would be
very grateful if anyone could give me some tips, or pointers about
what I should read to do this, or correct misconceptions in what I
wrote above.
The stuff below is excerpted from rtscom.h, and it looks like the
interface IRealTimeStylus which I would like to use in Python.
Damon.
#ifndef __IRealTimeStylus_INTERFACE_DEFINED__
#define __IRealTimeStylus_INTERFACE_DEFINED__
/* interface IRealTimeStylus */
/* [unique][helpstring][uuid][object] */
EXTERN_C const IID IID_IRealTimeStylus;
#if defined(__cplusplus)&& !defined(CINTERFACE)
MIDL_INTERFACE("A8BB5D22-3144-4a7b-93CD-F34A16BE513A")
IRealTimeStylus : public IUnknown
{
public:
virtual /* [propget] */ HRESULT STDMETHODCALLTYPE get_Enabled(
/* [retval][out] */ __RPC__out BOOL *pfEnable) = 0;
virtual /* [propput] */ HRESULT STDMETHODCALLTYPE put_Enabled(
/* [in] */ BOOL fEnable) = 0;
virtual /* [propget] */ HRESULT STDMETHODCALLTYPE get_HWND(
/* [retval][out] */ __RPC__out HANDLE_PTR *phwnd) = 0;
virtual /* [propput] */ HRESULT STDMETHODCALLTYPE put_HWND(
/* [in] */ HANDLE_PTR hwnd) = 0;
virtual /* [propget] */ HRESULT STDMETHODCALLTYPE
get_WindowInputRectangle(
/* [retval][out] */ __RPC__out RECT *prcWndInputRect) = 0;
virtual /* [propput] */ HRESULT STDMETHODCALLTYPE
put_WindowInputRectangle(
/* [in] */ __RPC__in const RECT *prcWndInputRect) = 0;
virtual HRESULT STDMETHODCALLTYPE AddStylusSyncPlugin(
/* [in] */ ULONG iIndex,
/* [in] */ __RPC__in_opt IStylusSyncPlugin *piPlugin) = 0;
virtual HRESULT STDMETHODCALLTYPE RemoveStylusSyncPlugin(
/* [in] */ ULONG iIndex,
/* [out][in] */ __RPC__deref_inout_opt IStylusSyncPlugin
**ppiPlugin) = 0;
virtual HRESULT STDMETHODCALLTYPE RemoveAllStylusSyncPlugins( void) =
0;
virtual HRESULT STDMETHODCALLTYPE GetStylusSyncPlugin(
/* [in] */ ULONG iIndex,
/* [out] */ __RPC__deref_out_opt IStylusSyncPlugin **ppiPlugin) =
0;
virtual HRESULT STDMETHODCALLTYPE GetStylusSyncPluginCount(
/* [out] */ __RPC__out ULONG *pcPlugins) = 0;
virtual HRESULT STDMETHODCALLTYPE AddStylusAsyncPlugin(
/* [in] */ ULONG iIndex,
/* [in] */ __RPC__in_opt IStylusAsyncPlugin *piPlugin) = 0;
virtual HRESULT STDMETHODCALLTYPE RemoveStylusAsyncPlugin(
/* [in] */ ULONG iIndex,
/* [out][in] */ __RPC__deref_inout_opt IStylusAsyncPlugin
**ppiPlugin) = 0;
virtual HRESULT STDMETHODCALLTYPE RemoveAllStylusAsyncPlugins(
void) = 0;
virtual HRESULT STDMETHODCALLTYPE GetStylusAsyncPlugin(
/* [in] */ ULONG iIndex,
/* [out] */ __RPC__deref_out_opt IStylusAsyncPlugin
**ppiPlugin) = 0;
virtual HRESULT STDMETHODCALLTYPE GetStylusAsyncPluginCount(
/* [out] */ __RPC__out ULONG *pcPlugins) = 0;
virtual /* [propget] */ HRESULT STDMETHODCALLTYPE
get_ChildRealTimeStylusPlugin(
/* [retval][out] */ __RPC__deref_out_opt IRealTimeStylus
**ppiRTS) = 0;
virtual /* [propputref] */ HRESULT STDMETHODCALLTYPE
putref_ChildRealTimeStylusPlugin(
/* [unique][in] */ __RPC__in_opt IRealTimeStylus *piRTS) = 0;
virtual HRESULT STDMETHODCALLTYPE AddCustomStylusDataToQueue(
/* [in] */ StylusQueue sq,
/* [in] */ __RPC__in const GUID *pGuidId,
/* [range][in] */ __RPC__in_range(0,0x7fff) ULONG cbData,
/* [unique][size_is][in] */
__RPC__in_ecount_full_opt(cbData) BYTE *pbData) = 0;
virtual HRESULT STDMETHODCALLTYPE ClearStylusQueues( void) = 0;
virtual HRESULT STDMETHODCALLTYPE SetAllTabletsMode(
/* [in] */ BOOL fUseMouseForInput) = 0;
virtual HRESULT STDMETHODCALLTYPE SetSingleTabletMode(
/* [in] */ __RPC__in_opt IInkTablet *piTablet) = 0;
virtual HRESULT STDMETHODCALLTYPE GetTablet(
/* [retval][out] */ __RPC__deref_out_opt IInkTablet
**ppiSingleTablet) = 0;
virtual HRESULT STDMETHODCALLTYPE GetTabletContextIdFromTablet(
/* [in] */ __RPC__in_opt IInkTablet *piTablet,
/* [retval][out] */ __RPC__out TABLET_CONTEXT_ID *ptcid) = 0;
virtual HRESULT STDMETHODCALLTYPE GetTabletFromTabletContextId(
/* [in] */ TABLET_CONTEXT_ID tcid,
/* [retval][out] */ __RPC__deref_out_opt IInkTablet
**ppiTablet) = 0;
virtual HRESULT STDMETHODCALLTYPE GetAllTabletContextIds(
/* [out][in] */ __RPC__inout ULONG *pcTcidCount,
/* [size_is][size_is][out] */
__RPC__deref_out_ecount_full_opt(*pcTcidCount) TABLET_CONTEXT_ID
**ppTcids) = 0;
virtual HRESULT STDMETHODCALLTYPE GetStyluses(
/* [retval][out] */ __RPC__deref_out_opt IInkCursors
**ppiInkCursors) = 0;
virtual HRESULT STDMETHODCALLTYPE GetStylusForId(
/* [in] */ STYLUS_ID sid,
/* [retval][out] */ __RPC__deref_out_opt IInkCursor
**ppiInkCursor) = 0;
virtual HRESULT STDMETHODCALLTYPE SetDesiredPacketDescription(
/* [range][in] */ __RPC__in_range(0,32) ULONG cProperties,
/* [size_is][in] */ __RPC__in_ecount_full(cProperties)
const GUID *pPropertyGuids) = 0;
virtual HRESULT STDMETHODCALLTYPE GetDesiredPacketDescription(
/* [out][in] */ __RPC__inout ULONG *pcProperties,
/* [size_is][size_is][out] */
__RPC__deref_out_ecount_full_opt(*pcProperties) GUID
**ppPropertyGuids) = 0;
virtual HRESULT STDMETHODCALLTYPE GetPacketDescriptionData(
/* [in] */ TABLET_CONTEXT_ID tcid,
/* [unique][out][in] */ __RPC__inout_opt FLOAT
*pfInkToDeviceScaleX,
/* [unique][out][in] */ __RPC__inout_opt FLOAT
*pfInkToDeviceScaleY,
/* [out][in] */ __RPC__inout ULONG *pcPacketProperties,
/* [size_is][size_is][out] */
__RPC__deref_out_ecount_full_opt(*pcPacketProperties) PACKET_PROPERTY
**ppPacketProperties) = 0;
};
#else /* C style interface */
typedef struct IRealTimeStylusVtbl
{
BEGIN_INTERFACE
HRESULT ( STDMETHODCALLTYPE *QueryInterface )(
__RPC__in IRealTimeStylus * This,
/* [in] */ __RPC__in REFIID riid,
/* [annotation][iid_is][out] */
__RPC__deref_out void **ppvObject);
ULONG ( STDMETHODCALLTYPE *AddRef )(
__RPC__in IRealTimeStylus * This);
ULONG ( STDMETHODCALLTYPE *Release )(
__RPC__in IRealTimeStylus * This);
/* [propget] */ HRESULT ( STDMETHODCALLTYPE *get_Enabled )(
__RPC__in IRealTimeStylus * This,
/* [retval][out] */ __RPC__out BOOL *pfEnable);
/* [propput] */ HRESULT ( STDMETHODCALLTYPE *put_Enabled )(
__RPC__in IRealTimeStylus * This,
/* [in] */ BOOL fEnable);
/* [propget] */ HRESULT ( STDMETHODCALLTYPE *get_HWND )(
__RPC__in IRealTimeStylus * This,
/* [retval][out] */ __RPC__out HANDLE_PTR *phwnd);
/* [propput] */ HRESULT ( STDMETHODCALLTYPE *put_HWND )(
__RPC__in IRealTimeStylus * This,
/* [in] */ HANDLE_PTR hwnd);
/* [propget] */ HRESULT ( STDMETHODCALLTYPE
*get_WindowInputRectangle )(
__RPC__in IRealTimeStylus * This,
/* [retval][out] */ __RPC__out RECT *prcWndInputRect);
/* [propput] */ HRESULT ( STDMETHODCALLTYPE
*put_WindowInputRectangle )(
__RPC__in IRealTimeStylus * This,
/* [in] */ __RPC__in const RECT *prcWndInputRect);
HRESULT ( STDMETHODCALLTYPE *AddStylusSyncPlugin )(
__RPC__in IRealTimeStylus * This,
/* [in] */ ULONG iIndex,
/* [in] */ __RPC__in_opt IStylusSyncPlugin *piPlugin);
HRESULT ( STDMETHODCALLTYPE *RemoveStylusSyncPlugin )(
__RPC__in IRealTimeStylus * This,
/* [in] */ ULONG iIndex,
/* [out][in] */ __RPC__deref_inout_opt IStylusSyncPlugin
**ppiPlugin);
HRESULT ( STDMETHODCALLTYPE *RemoveAllStylusSyncPlugins )(
__RPC__in IRealTimeStylus * This);
HRESULT ( STDMETHODCALLTYPE *GetStylusSyncPlugin )(
__RPC__in IRealTimeStylus * This,
/* [in] */ ULONG iIndex,
/* [out] */ __RPC__deref_out_opt IStylusSyncPlugin **ppiPlugin);
HRESULT ( STDMETHODCALLTYPE *GetStylusSyncPluginCount )(
__RPC__in IRealTimeStylus * This,
/* [out] */ __RPC__out ULONG *pcPlugins);
HRESULT ( STDMETHODCALLTYPE *AddStylusAsyncPlugin )(
__RPC__in IRealTimeStylus * This,
/* [in] */ ULONG iIndex,
/* [in] */ __RPC__in_opt IStylusAsyncPlugin *piPlugin);
HRESULT ( STDMETHODCALLTYPE *RemoveStylusAsyncPlugin )(
__RPC__in IRealTimeStylus * This,
/* [in] */ ULONG iIndex,
/* [out][in] */ __RPC__deref_inout_opt IStylusAsyncPlugin
**ppiPlugin);
HRESULT ( STDMETHODCALLTYPE *RemoveAllStylusAsyncPlugins )(
__RPC__in IRealTimeStylus * This);
HRESULT ( STDMETHODCALLTYPE *GetStylusAsyncPlugin )(
__RPC__in IRealTimeStylus * This,
/* [in] */ ULONG iIndex,
/* [out] */ __RPC__deref_out_opt IStylusAsyncPlugin **ppiPlugin);
HRESULT ( STDMETHODCALLTYPE *GetStylusAsyncPluginCount )(
__RPC__in IRealTimeStylus * This,
/* [out] */ __RPC__out ULONG *pcPlugins);
/* [propget] */ HRESULT ( STDMETHODCALLTYPE
*get_ChildRealTimeStylusPlugin )(
__RPC__in IRealTimeStylus * This,
/* [retval][out] */ __RPC__deref_out_opt IRealTimeStylus **ppiRTS);
/* [propputref] */ HRESULT ( STDMETHODCALLTYPE
*putref_ChildRealTimeStylusPlugin )(
__RPC__in IRealTimeStylus * This,
/* [unique][in] */ __RPC__in_opt IRealTimeStylus *piRTS);
HRESULT ( STDMETHODCALLTYPE *AddCustomStylusDataToQueue )(
__RPC__in IRealTimeStylus * This,
/* [in] */ StylusQueue sq,
/* [in] */ __RPC__in const GUID *pGuidId,
/* [range][in] */ __RPC__in_range(0,0x7fff) ULONG cbData,
/* [unique][size_is][in] */
__RPC__in_ecount_full_opt(cbData) BYTE *pbData);
HRESULT ( STDMETHODCALLTYPE *ClearStylusQueues )(
__RPC__in IRealTimeStylus * This);
HRESULT ( STDMETHODCALLTYPE *SetAllTabletsMode )(
__RPC__in IRealTimeStylus * This,
/* [in] */ BOOL fUseMouseForInput);
HRESULT ( STDMETHODCALLTYPE *SetSingleTabletMode )(
__RPC__in IRealTimeStylus * This,
/* [in] */ __RPC__in_opt IInkTablet *piTablet);
HRESULT ( STDMETHODCALLTYPE *GetTablet )(
__RPC__in IRealTimeStylus * This,
/* [retval][out] */ __RPC__deref_out_opt IInkTablet
**ppiSingleTablet);
HRESULT ( STDMETHODCALLTYPE *GetTabletContextIdFromTablet )(
__RPC__in IRealTimeStylus * This,
/* [in] */ __RPC__in_opt IInkTablet *piTablet,
/* [retval][out] */ __RPC__out TABLET_CONTEXT_ID *ptcid);
HRESULT ( STDMETHODCALLTYPE *GetTabletFromTabletContextId )(
__RPC__in IRealTimeStylus * This,
/* [in] */ TABLET_CONTEXT_ID tcid,
/* [retval][out] */ __RPC__deref_out_opt IInkTablet **ppiTablet);
HRESULT ( STDMETHODCALLTYPE *GetAllTabletContextIds )(
__RPC__in IRealTimeStylus * This,
/* [out][in] */ __RPC__inout ULONG *pcTcidCount,
/* [size_is][size_is][out] */
__RPC__deref_out_ecount_full_opt(*pcTcidCount) TABLET_CONTEXT_ID
**ppTcids);
HRESULT ( STDMETHODCALLTYPE *GetStyluses )(
__RPC__in IRealTimeStylus * This,
/* [retval][out] */ __RPC__deref_out_opt IInkCursors
**ppiInkCursors);
HRESULT ( STDMETHODCALLTYPE *GetStylusForId )(
__RPC__in IRealTimeStylus * This,
/* [in] */ STYLUS_ID sid,
/* [retval][out] */ __RPC__deref_out_opt IInkCursor
**ppiInkCursor);
HRESULT ( STDMETHODCALLTYPE *SetDesiredPacketDescription )(
__RPC__in IRealTimeStylus * This,
/* [range][in] */ __RPC__in_range(0,32) ULONG cProperties,
/* [size_is][in] */ __RPC__in_ecount_full(cProperties)
const GUID *pPropertyGuids);
HRESULT ( STDMETHODCALLTYPE *GetDesiredPacketDescription )(
__RPC__in IRealTimeStylus * This,
/* [out][in] */ __RPC__inout ULONG *pcProperties,
/* [size_is][size_is][out] */
__RPC__deref_out_ecount_full_opt(*pcProperties) GUID
**ppPropertyGuids);
HRESULT ( STDMETHODCALLTYPE *GetPacketDescriptionData )(
__RPC__in IRealTimeStylus * This,
/* [in] */ TABLET_CONTEXT_ID tcid,
/* [unique][out][in] */ __RPC__inout_opt FLOAT
*pfInkToDeviceScaleX,
/* [unique][out][in] */ __RPC__inout_opt FLOAT
*pfInkToDeviceScaleY,
/* [out][in] */ __RPC__inout ULONG *pcPacketProperties,
/* [size_is][size_is][out] */
__RPC__deref_out_ecount_full_opt(*pcPacketProperties) PACKET_PROPERTY
**ppPacketProperties);
END_INTERFACE
} IRealTimeStylusVtbl;
interface IRealTimeStylus
{
CONST_VTBL struct IRealTimeStylusVtbl *lpVtbl;
};
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