/*
 * COMMON.H
 *
 * Structures and definitions applicable to all OLE 2.0 UI dialogs.
 *
 * Copyright (c)1992 Microsoft Corporation, All Right Reserved
 */


#ifndef _COMMON_H_
#define _COMMON_H_


//Macros to handle control message packing between Win16 and Win32
#ifdef WIN32

#ifndef COMMANDPARAMS
#define COMMANDPARAMS(wID, wCode, hWndMsg)                          \
    WORD        wID     = LOWORD(wParam);                           \
    WORD        wCode   = HIWORD(wParam);                           \
    HWND        hWndMsg = (HWND)(UINT)lParam;
#endif  //COMMANDPARAMS

#ifndef SendCommand
#define SendCommand(hWnd, wID, wCode, hControl)                     \
            SendMessage(hWnd, WM_COMMAND, MAKELONG(wID, wCode)      \
                        , (LPARAM)hControl)
#endif  //SendCommand

#else   //Start !WIN32

#ifndef COMMANDPARAMS
#define COMMANDPARAMS(wID, wCode, hWndMsg)                          \
    WORD        wID     = LOWORD(wParam);                           \
    WORD        wCode   = HIWORD(lParam);                           \
    HWND        hWndMsg = (HWND)(UINT)lParam;
#endif  //COMMANDPARAMS

#ifndef SendCommand
#define SendCommand(hWnd, wID, wCode, hControl)                     \
            SendMessage(hWnd, WM_COMMAND, wID                       \
                        , MAKELONG(hControl, wCode))
#endif  //SendCommand

#endif  //!WIN32



//Property labels used to store dialog structures and fonts
#define STRUCTUREPROP       TEXT("Structure")
#define FONTPROP            TEXT("Font")


/*
 * Standard structure for all dialogs.  This commonality lets us make
 * a single piece of code that will validate this entire structure and
 * perform any necessary initialization.
 */

typedef struct tagOLEUISTANDARD
    {
    //These IN fields are standard across all OLEUI dialog functions.
    DWORD           cbStruct;       //Structure Size
    DWORD           dwFlags;        //IN-OUT:  Flags
    HWND            hWndOwner;      //Owning window
    LPCTSTR         lpszCaption;    //Dialog caption bar contents
    LPFNOLEUIHOOK   lpfnHook;       //Hook callback
    LPARAM          lCustData;      //Custom data to pass to hook
    HINSTANCE       hInstance;      //Instance for customized template name
    LPCTSTR         lpszTemplate;   //Customized template name
    HRSRC           hResource;      //Customized template handle
    } OLEUISTANDARD, *POLEUISTANDARD, FAR *LPOLEUISTANDARD;



//Function prototypes
//COMMON.C
UINT  WINAPI  UStandardValidation(const LPOLEUISTANDARD, const UINT, const HGLOBAL FAR *);

#ifdef WIN32
UINT  WINAPI  UStandardInvocation(DLGPROC, LPOLEUISTANDARD, HGLOBAL, LPTSTR);
#else
UINT  WINAPI  UStandardInvocation(DLGPROC, LPOLEUISTANDARD, HGLOBAL, LPCTSTR);
#endif

LPVOID WINAPI LpvStandardInit(HWND, UINT, BOOL, HFONT FAR *);
LPVOID WINAPI LpvStandardEntry(HWND, UINT, WPARAM, LPARAM, UINT FAR *);
UINT WINAPI   UStandardHook(LPVOID, HWND, UINT, WPARAM, LPARAM);
void WINAPI   StandardCleanup(LPVOID, HWND);
void WINAPI   StandardShowDlgItem(HWND hDlg, int idControl, int nCmdShow);


//DRAWICON.C

//Structure for label and source extraction from a metafile
typedef struct tagLABELEXTRACT
    {
    LPTSTR      lpsz;
    UINT        Index;      // index in lpsz (so we can retrieve 2+ lines)
    DWORD       PrevIndex;  // index of last line (so we can mimic word wrap)

    union
        {
        UINT    cch;        //Length of label for label extraction
        UINT    iIcon;      //Index of icon in source extraction.
        } u;

    //For internal use in enum procs
    BOOL        fFoundIconOnly;
    BOOL        fFoundSource;
    BOOL        fFoundIndex;
    } LABELEXTRACT, FAR * LPLABELEXTRACT;


//Structure for extracting icons from a metafile (CreateIcon parameters)
typedef struct tagICONEXTRACT
    {
    HICON       hIcon;          //Icon created in the enumeration proc.

    /*
     * Since we want to handle multitasking well we have the caller
     * of the enumeration proc instantiate these variables instead of
     * using statics in the enum proc (which would be bad).
     */
    BOOL        fAND;
    HGLOBAL     hMemAND;        //Enumeration proc allocates and copies
    } ICONEXTRACT, FAR * LPICONEXTRACT;


//Structure to use to pass info to EnumMetafileDraw
typedef struct tagDRAWINFO
    {
    RECT     Rect;
    BOOL     fIconOnly;
    } DRAWINFO, FAR * LPDRAWINFO;


int CALLBACK EXPORT EnumMetafileIconDraw(HDC, HANDLETABLE FAR *, METARECORD FAR *, int, LPARAM);
int CALLBACK EXPORT EnumMetafileExtractLabel(HDC, HANDLETABLE FAR *, METARECORD FAR *, int, LPLABELEXTRACT);
int CALLBACK EXPORT EnumMetafileExtractIcon(HDC, HANDLETABLE FAR *, METARECORD FAR *, int, LPICONEXTRACT);
int CALLBACK EXPORT EnumMetafileExtractIconSource(HDC, HANDLETABLE FAR *, METARECORD FAR *, int, LPLABELEXTRACT);


//Shared globals:  our instance, registered messages used from all dialogs and clipboard
// formats used by the PasteSpecial dialog
extern HINSTANCE  ghInst;

extern UINT       uMsgHelp;
extern UINT       uMsgEndDialog;
extern UINT       uMsgBrowse;
extern UINT       uMsgChangeIcon;
extern UINT       uMsgFileOKString;
extern UINT       uMsgCloseBusyDlg;

extern UINT       cfObjectDescriptor;
extern UINT       cfLinkSrcDescriptor;
extern UINT       cfEmbedSource;
extern UINT       cfEmbeddedObject;
extern UINT       cfLinkSource;
extern UINT       cfOwnerLink;
extern UINT       cfFileName;

//Standard control identifiers
#define ID_NULL                         98

#endif //_COMMON_H_