fileutils.h File Reference

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Classes
struct	_CLIPFILEHEADER
struct	_CLIPFORMATHEADER
struct	_NTCLIPFILEHEADER
struct	_NTCLIPFORMATHEADER

Macros
#define	CLIP_FMT_31   0xC350
#define	CLIP_FMT_NT   0xC351
#define	CLIP_FMT_BK   0xC352
#define	MAX_FMT_NAME_LEN   79

Typedefs
typedef struct _CLIPFILEHEADER	CLIPFILEHEADER
typedef struct _CLIPFORMATHEADER	CLIPFORMATHEADER
typedef struct _NTCLIPFILEHEADER	NTCLIPFILEHEADER
typedef struct _NTCLIPFORMATHEADER	NTCLIPFORMATHEADER

Functions
void	ReadClipboardFile (LPCWSTR lpFileName)
void	WriteClipboardFile (LPCWSTR lpFileName, WORD wFileIdentifier)

Macro Definition Documentation

CLIP_FMT_31

#define CLIP_FMT_31   0xC350

Definition at line 12 of file fileutils.h.

CLIP_FMT_BK

#define CLIP_FMT_BK   0xC352

Definition at line 14 of file fileutils.h.

CLIP_FMT_NT

#define CLIP_FMT_NT   0xC351

Definition at line 13 of file fileutils.h.

MAX_FMT_NAME_LEN

#define MAX_FMT_NAME_LEN   79

Definition at line 16 of file fileutils.h.

Typedef Documentation

CLIPFILEHEADER

typedef struct _CLIPFILEHEADER CLIPFILEHEADER

CLIPFORMATHEADER

typedef struct _CLIPFORMATHEADER CLIPFORMATHEADER

NTCLIPFILEHEADER

typedef struct _NTCLIPFILEHEADER NTCLIPFILEHEADER

NTCLIPFORMATHEADER

typedef struct _NTCLIPFORMATHEADER NTCLIPFORMATHEADER

Function Documentation

ReadClipboardFile()

void ReadClipboardFile

(

LPCWSTR

lpFileName

)

Definition at line 275 of file fileutils.c.

{
    CLIPFILEHEADER ClipFileHeader;
    CLIPFORMATHEADER ClipFormatArray;
    NTCLIPFILEHEADER NtClipFileHeader;
    NTCLIPFORMATHEADER NtClipFormatArray;
    PVOID pClipFileHeader;
    PVOID pClipFormatArray;
    DWORD SizeOfFileHeader, SizeOfFormatHeader;
 
    WORD wFileIdentifier;
    WORD wFormatCount;
    DWORD dwFormatID;
    DWORD dwLenData;
    DWORD dwOffData;
    PVOID szName;
 
    HANDLE hFile;
    DWORD dwBytesRead;
    BOOL bResult;
    int i;
 
    /* Open the file for read access */
    hFile = CreateFileW(lpFileName, GENERIC_READ, FILE_SHARE_READ, NULL,
                        OPEN_EXISTING, FILE_ATTRIBUTE_NORMAL, NULL);
    if (hFile == INVALID_HANDLE_VALUE)
    {
        ShowLastWin32Error(Globals.hMainWnd);
        goto done;
    }
 
    /* Just read enough bytes to get the clipboard file format ID */
    if (!ReadFile(hFile, &wFileIdentifier, sizeof(wFileIdentifier), &dwBytesRead, NULL))
    {
        ShowLastWin32Error(Globals.hMainWnd);
        goto done;
    }
 
    /* Set data according to the clipboard file format ID */
    switch (wFileIdentifier)
    {
        case CLIP_FMT_31:
            SizeOfFileHeader   = sizeof(CLIPFILEHEADER);
            SizeOfFormatHeader = sizeof(CLIPFORMATHEADER);
            pClipFileHeader    = &ClipFileHeader;
            pClipFormatArray   = &ClipFormatArray;
            break;
 
        case CLIP_FMT_NT:
        case CLIP_FMT_BK:
            SizeOfFileHeader   = sizeof(NTCLIPFILEHEADER);
            SizeOfFormatHeader = sizeof(NTCLIPFORMATHEADER);
            pClipFileHeader    = &NtClipFileHeader;
            pClipFormatArray   = &NtClipFormatArray;
            break;
 
        default:
            MessageBoxRes(Globals.hMainWnd, Globals.hInstance, ERROR_INVALID_FILE_FORMAT, 0, MB_ICONSTOP | MB_OK);
            goto done;
    }
 
    /* Completely read the header */
    SetFilePointer(hFile, 0, NULL, FILE_BEGIN);
    if (!ReadFile(hFile, pClipFileHeader, SizeOfFileHeader, &dwBytesRead, NULL) ||
        dwBytesRead != SizeOfFileHeader)
    {
        ShowLastWin32Error(Globals.hMainWnd);
        goto done;
    }
 
    /* Get header data */
    switch (wFileIdentifier)
    {
        case CLIP_FMT_31:
            assert(wFileIdentifier == ((CLIPFILEHEADER*)pClipFileHeader)->wFileIdentifier);
            wFormatCount = ((CLIPFILEHEADER*)pClipFileHeader)->wFormatCount;
            break;
 
        case CLIP_FMT_NT:
        case CLIP_FMT_BK:
            assert(wFileIdentifier == ((NTCLIPFILEHEADER*)pClipFileHeader)->wFileIdentifier);
            wFormatCount = ((NTCLIPFILEHEADER*)pClipFileHeader)->wFormatCount;
            break;
    }
 
    /* Loop through the format data array */
    for (i = 0; i < wFormatCount; i++)
    {
        if (SetFilePointer(hFile, SizeOfFileHeader + i * SizeOfFormatHeader, NULL, FILE_BEGIN) == INVALID_SET_FILE_POINTER)
        {
            ShowLastWin32Error(Globals.hMainWnd);
            goto done;
        }
 
        if (!ReadFile(hFile, pClipFormatArray, SizeOfFormatHeader, &dwBytesRead, NULL))
        {
            ShowLastWin32Error(Globals.hMainWnd);
            goto done;
        }
 
        /* Get format data */
        switch (wFileIdentifier)
        {
            case CLIP_FMT_31:
                dwFormatID = ((CLIPFORMATHEADER*)pClipFormatArray)->dwFormatID;
                dwLenData  = ((CLIPFORMATHEADER*)pClipFormatArray)->dwLenData;
                dwOffData  = ((CLIPFORMATHEADER*)pClipFormatArray)->dwOffData;
                szName     = ((CLIPFORMATHEADER*)pClipFormatArray)->szName;
                break;
 
            case CLIP_FMT_NT:
            case CLIP_FMT_BK:
                dwFormatID = ((NTCLIPFORMATHEADER*)pClipFormatArray)->dwFormatID;
                dwLenData  = ((NTCLIPFORMATHEADER*)pClipFormatArray)->dwLenData;
                dwOffData  = ((NTCLIPFORMATHEADER*)pClipFormatArray)->dwOffData;
                szName     = ((NTCLIPFORMATHEADER*)pClipFormatArray)->szName;
                break;
        }
 
        switch (dwFormatID)
        {
            case CF_OWNERDISPLAY:
            {
                break;
            }
 
            case CF_DSPBITMAP:
            case CF_BITMAP:
            {
                bResult = ClipboardReadBitmap(hFile, dwOffData, dwLenData);
                break;
            }
 
            case CF_DSPMETAFILEPICT:
            case CF_METAFILEPICT:
            {
                bResult = ClipboardReadMetafile(hFile, dwOffData, dwLenData);
                break;
            }
 
            case CF_DSPENHMETAFILE:
            case CF_ENHMETAFILE:
            {
                bResult = ClipboardReadEnhMetafile(hFile, dwOffData, dwLenData);
                break;
            }
 
            case CF_PALETTE:
            {
                bResult = ClipboardReadPalette(hFile, dwOffData, dwLenData);
                break;
            }
 
            default:
            {
                if ((dwFormatID < CF_PRIVATEFIRST) || (dwFormatID > CF_PRIVATELAST))
                {
                    bResult = ClipboardReadMemory(hFile, dwFormatID, dwOffData, dwLenData, wFileIdentifier, szName);
                }
                break;
            }
        }
 
        if (!bResult)
            ShowLastWin32Error(Globals.hMainWnd);
    }
 
done:
    if (hFile != INVALID_HANDLE_VALUE)
        CloseHandle(hFile);
 
    return;
}

Referenced by LoadClipboardDataFromFile().

WriteClipboardFile()

void WriteClipboardFile	(	LPCWSTR	lpFileName,
		WORD	wFileIdentifier
	)

Definition at line 449 of file fileutils.c.

{
    CLIPFILEHEADER ClipFileHeader;
    CLIPFORMATHEADER ClipFormatArray;
    NTCLIPFILEHEADER NtClipFileHeader;
    NTCLIPFORMATHEADER NtClipFormatArray;
    PVOID pClipFileHeader;
    PVOID pClipFormatArray;
    DWORD SizeOfFileHeader, SizeOfFormatHeader;
 
    WORD wFormatCount;
    DWORD dwFormatID;
    DWORD dwLenData;
    DWORD dwOffData;
    // PVOID szName;
 
    HANDLE hFile;
    DWORD dwBytesWritten;
    int i;
 
    /* Create the file for write access */
    hFile = CreateFileW(lpFileName, GENERIC_WRITE, 0, NULL,
                        CREATE_ALWAYS, FILE_ATTRIBUTE_NORMAL, NULL);
    if (hFile == INVALID_HANDLE_VALUE)
    {
        ShowLastWin32Error(Globals.hMainWnd);
        goto done;
    }
 
    wFormatCount = CountClipboardFormats();
 
    /* Select the file format and setup the header according to the clipboard file format ID */
    switch (wFileIdentifier)
    {
        case CLIP_FMT_31:
            SizeOfFileHeader   = sizeof(CLIPFILEHEADER);
            SizeOfFormatHeader = sizeof(CLIPFORMATHEADER);
            pClipFileHeader    = &ClipFileHeader;
            pClipFormatArray   = &ClipFormatArray;
 
            ClipFileHeader.wFileIdentifier = CLIP_FMT_31; // wFileIdentifier
            ClipFileHeader.wFormatCount    = wFormatCount;
            break;
 
        case CLIP_FMT_NT:
        case CLIP_FMT_BK:
            SizeOfFileHeader   = sizeof(NTCLIPFILEHEADER);
            SizeOfFormatHeader = sizeof(NTCLIPFORMATHEADER);
            pClipFileHeader    = &NtClipFileHeader;
            pClipFormatArray   = &NtClipFormatArray;
 
            NtClipFileHeader.wFileIdentifier = CLIP_FMT_NT; // wFileIdentifier
            NtClipFileHeader.wFormatCount    = wFormatCount;
            break;
 
        default:
            MessageBoxRes(Globals.hMainWnd, Globals.hInstance, ERROR_INVALID_FILE_FORMAT, 0, MB_ICONSTOP | MB_OK);
            goto done;
    }
 
    /* Write the header */
    SetFilePointer(hFile, 0, NULL, FILE_BEGIN);
    if (!WriteFile(hFile, pClipFileHeader, SizeOfFileHeader, &dwBytesWritten, NULL) ||
        dwBytesWritten != SizeOfFileHeader)
    {
        ShowLastWin32Error(Globals.hMainWnd);
        goto done;
    }
 
    /* Compute where the data should start (after the file header and the format array) */
    dwOffData = SizeOfFileHeader + wFormatCount * SizeOfFormatHeader;
 
    /* Loop through each format and save the data */
    i = 0;
    dwFormatID = EnumClipboardFormats(0);
    while (dwFormatID)
    {
        if (i >= wFormatCount)
        {
            /* Must never happen! */
            assert(FALSE);
            break;
        }
 
        /* Write the clipboard data at the specified offset, and retrieve its length */
        if (!ClipboardWriteMemory(hFile, dwFormatID, dwOffData, &dwLenData))
            goto Cont;
 
        /* Write the format data header */
        switch (wFileIdentifier)
        {
            case CLIP_FMT_31:
                ZeroMemory(pClipFormatArray, sizeof(CLIPFORMATHEADER));
                ((CLIPFORMATHEADER*)pClipFormatArray)->dwFormatID = dwFormatID;
                ((CLIPFORMATHEADER*)pClipFormatArray)->dwLenData  = dwLenData;
                ((CLIPFORMATHEADER*)pClipFormatArray)->dwOffData  = dwOffData;
                RetrieveClipboardFormatName(Globals.hInstance,
                                            dwFormatID,
                                            FALSE,
                                            ((CLIPFORMATHEADER*)pClipFormatArray)->szName,
                                            ARRAYSIZE(((CLIPFORMATHEADER*)pClipFormatArray)->szName));
                break;
 
            case CLIP_FMT_NT:
            case CLIP_FMT_BK:
                ZeroMemory(pClipFormatArray, sizeof(NTCLIPFORMATHEADER));
                ((NTCLIPFORMATHEADER*)pClipFormatArray)->dwFormatID = dwFormatID;
                ((NTCLIPFORMATHEADER*)pClipFormatArray)->dwLenData  = dwLenData;
                ((NTCLIPFORMATHEADER*)pClipFormatArray)->dwOffData  = dwOffData;
                RetrieveClipboardFormatName(Globals.hInstance,
                                            dwFormatID,
                                            TRUE,
                                            ((NTCLIPFORMATHEADER*)pClipFormatArray)->szName,
                                            ARRAYSIZE(((NTCLIPFORMATHEADER*)pClipFormatArray)->szName));
                break;
        }
 
        if (SetFilePointer(hFile, SizeOfFileHeader + i * SizeOfFormatHeader, NULL, FILE_BEGIN) == INVALID_SET_FILE_POINTER)
        {
            ShowLastWin32Error(Globals.hMainWnd);
            goto done;
        }
 
        if (!WriteFile(hFile, pClipFormatArray, SizeOfFormatHeader, &dwBytesWritten, NULL))
        {
            ShowLastWin32Error(Globals.hMainWnd);
            goto done;
        }
 
        /* Adjust the offset for the next data stream */
        dwOffData += dwLenData;
 
Cont:
        i++;
        dwFormatID = EnumClipboardFormats(dwFormatID);
    }
 
done:
    if (hFile != INVALID_HANDLE_VALUE)
        CloseHandle(hFile);
 
    return;
}

Referenced by SaveClipboardToFile().