wbded.h

/*----------------------------------------------------------------------
  Part of this code is borrowed and adapted from Glib library (GTK project)
  ----------------------------------------------------------------------
  this header may be redundant for some of the catch22.net examples, this because
  it's intended as part of a more general framework targeted to simplify
  the task of writing win32 OLE programs in pure C code.
  This is work in progress.
  ----------------------------------------------------------------------*/

#ifndef WBDED_INC
#define WBDED_INC
#include <ole2.h>

#define g_new0(struct_type, n_structs)		\
    ((struct_type *) g_malloc0 (((gsize) sizeof (struct_type)) * ((gsize) (n_structs))))

#define g_new(struct_type, n_structs)		\
    ((struct_type *) g_malloc (((gsize) sizeof (struct_type)) * ((gsize) (n_structs))))

// glib's configure
typedef unsigned int gsize;
// from gtypes.h
typedef unsigned int    guint;
typedef void* gpointer;
typedef unsigned long   gulong;

gpointer g_malloc0  (gulong	n_bytes);
gpointer g_malloc	(gulong	 n_bytes);

typedef struct _GMemVTable GMemVTable;

void g_free	(gpointer	 mem);

// data object:

typedef struct {
	IDataObject ido;
	int ref_count;
	FORMATETC *m_pFormatEtc;
	STGMEDIUM *m_pStgMedium;
	LONG	   m_nNumFormats;
	LONG m_lRefCount;
} WB_IDataObject;


typedef struct {
	IEnumFORMATETC ief;
	int ref_count;
	int ix;
	LONG		m_lRefCount;		// Reference count for this COM interface
	ULONG		m_nIndex;			// current enumerator index
	ULONG		m_nNumFormats;		// number of FORMATETC members
	FORMATETC * m_pFormatEtc;
} WB_IEnumFORMATETC;

typedef struct {
	IDropSource ids;
	LONG	   m_lRefCount;
}	WB_IDropSource;

typedef struct {
	IDropTarget idt;
	LONG	m_lRefCount;
	HWND	m_hWnd;
	BOOL  m_fAllowDrop;
	IDataObject *m_pDataObject;
} WB_IDropTarget;

typedef struct WB_IDataObjectVtbl
    {
        BEGIN_INTERFACE
        
        HRESULT ( STDMETHODCALLTYPE __RPC_FAR *QueryInterface )( 
            WB_IDataObject __RPC_FAR * This,
            /* [in] */ REFIID riid,
            /* [iid_is][out] */ void __RPC_FAR *__RPC_FAR *ppvObject);
        
        ULONG ( STDMETHODCALLTYPE __RPC_FAR *AddRef )( 
            WB_IDataObject __RPC_FAR * This);
        
        ULONG ( STDMETHODCALLTYPE __RPC_FAR *Release )( 
            WB_IDataObject __RPC_FAR * This);
        
        /* [local] */ HRESULT ( STDMETHODCALLTYPE __RPC_FAR *GetData )( 
            WB_IDataObject __RPC_FAR * This,
            /* [unique][in] */ FORMATETC __RPC_FAR *pformatetcIn,
            /* [out] */ STGMEDIUM __RPC_FAR *pmedium);
        
        /* [local] */ HRESULT ( STDMETHODCALLTYPE __RPC_FAR *GetDataHere )( 
            WB_IDataObject __RPC_FAR * This,
            /* [unique][in] */ FORMATETC __RPC_FAR *pformatetc,
            /* [out][in] */ STGMEDIUM __RPC_FAR *pmedium);
        
        HRESULT ( STDMETHODCALLTYPE __RPC_FAR *QueryGetData )( 
            WB_IDataObject __RPC_FAR * This,
            /* [unique][in] */ FORMATETC __RPC_FAR *pformatetc);
        
        HRESULT ( STDMETHODCALLTYPE __RPC_FAR *GetCanonicalFormatEtc )( 
            WB_IDataObject __RPC_FAR * This,
            /* [unique][in] */ FORMATETC __RPC_FAR *pformatectIn,
            /* [out] */ FORMATETC __RPC_FAR *pformatetcOut);
        
        /* [local] */ HRESULT ( STDMETHODCALLTYPE __RPC_FAR *SetData )( 
            WB_IDataObject __RPC_FAR * This,
            /* [unique][in] */ FORMATETC __RPC_FAR *pformatetc,
            /* [unique][in] */ STGMEDIUM __RPC_FAR *pmedium,
            /* [in] */ BOOL fRelease);
        
        HRESULT ( STDMETHODCALLTYPE __RPC_FAR *EnumFormatEtc )( 
            WB_IDataObject __RPC_FAR * This,
            /* [in] */ DWORD dwDirection,
            /* [out] */ IEnumFORMATETC __RPC_FAR *__RPC_FAR *ppenumFormatEtc);
        
        HRESULT ( STDMETHODCALLTYPE __RPC_FAR *DAdvise )( 
            WB_IDataObject __RPC_FAR * This,
            /* [in] */ FORMATETC __RPC_FAR *pformatetc,
            /* [in] */ DWORD advf,
            /* [unique][in] */ IAdviseSink __RPC_FAR *pAdvSink,
            /* [out] */ DWORD __RPC_FAR *pdwConnection);
        
        HRESULT ( STDMETHODCALLTYPE __RPC_FAR *DUnadvise )( 
            WB_IDataObject __RPC_FAR * This,
            /* [in] */ DWORD dwConnection);
        
        HRESULT ( STDMETHODCALLTYPE __RPC_FAR *EnumDAdvise )( 
            WB_IDataObject __RPC_FAR * This,
            /* [out] */ IEnumSTATDATA __RPC_FAR *__RPC_FAR *ppenumAdvise);
        
        END_INTERFACE
    } WB_IDataObjectVtbl;

typedef struct WB_IEnumFORMATETCVtbl
    {
        BEGIN_INTERFACE
        
        HRESULT ( STDMETHODCALLTYPE __RPC_FAR *QueryInterface )( 
            WB_IEnumFORMATETC __RPC_FAR * This,
            /* [in] */ REFIID riid,
            /* [iid_is][out] */ void __RPC_FAR *__RPC_FAR *ppvObject);
        
        ULONG ( STDMETHODCALLTYPE __RPC_FAR *AddRef )( 
            WB_IEnumFORMATETC __RPC_FAR * This);
        
        ULONG ( STDMETHODCALLTYPE __RPC_FAR *Release )( 
            WB_IEnumFORMATETC __RPC_FAR * This);
        
        /* [local] */ HRESULT ( STDMETHODCALLTYPE __RPC_FAR *Next )( 
            WB_IEnumFORMATETC __RPC_FAR * This,
            /* [in] */ ULONG celt,
            /* [length_is][size_is][out] */ FORMATETC __RPC_FAR *rgelt,
            /* [out] */ ULONG __RPC_FAR *pceltFetched);
        
        HRESULT ( STDMETHODCALLTYPE __RPC_FAR *Skip )( 
            WB_IEnumFORMATETC __RPC_FAR * This,
            /* [in] */ ULONG celt);
        
        HRESULT ( STDMETHODCALLTYPE __RPC_FAR *Reset )( 
            WB_IEnumFORMATETC __RPC_FAR * This);
        
        HRESULT ( STDMETHODCALLTYPE __RPC_FAR *Clone )( 
            WB_IEnumFORMATETC __RPC_FAR * This,
            /* [out] */ WB_IEnumFORMATETC __RPC_FAR *__RPC_FAR *ppenum);
        
        END_INTERFACE
    } WB_IEnumFORMATETCVtbl;


typedef struct WB_IDropSourceVtbl
    {
        BEGIN_INTERFACE
        
        HRESULT ( STDMETHODCALLTYPE __RPC_FAR *QueryInterface )( 
            WB_IDropSource __RPC_FAR * This,
            /* [in] */ REFIID riid,
            /* [iid_is][out] */ void __RPC_FAR *__RPC_FAR *ppvObject);
        
        ULONG ( STDMETHODCALLTYPE __RPC_FAR *AddRef )( 
            WB_IDropSource __RPC_FAR * This);
        
        ULONG ( STDMETHODCALLTYPE __RPC_FAR *Release )( 
            WB_IDropSource __RPC_FAR * This);
        
        HRESULT ( STDMETHODCALLTYPE __RPC_FAR *QueryContinueDrag )( 
            WB_IDropSource __RPC_FAR * This,
            /* [in] */ BOOL fEscapePressed,
            /* [in] */ DWORD grfKeyState);
        
        HRESULT ( STDMETHODCALLTYPE __RPC_FAR *GiveFeedback )( 
            WB_IDropSource __RPC_FAR * This,
            /* [in] */ DWORD dwEffect);
        
        END_INTERFACE
    } WB_IDropSourceVtbl;

typedef WB_IDataObject* LPWBDATAOBJECT;
typedef WB_IEnumFORMATETC* LPWBFORMATETC;

WB_IEnumFORMATETC *WB_IEnumFORMATETC_new (UINT, FORMATETC *);
#endif