Source code of Windows XP (NT5)
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/*
* UTILITY.CPP
*
* Utility routines for functions inside OLEDLG.DLL
*
* General:
* ----------------------
* HourGlassOn Displays the hourglass
* HourGlassOff Hides the hourglass
*
* Misc Tools:
* ----------------------
* Browse Displays the "File..." or "Browse..." dialog.
* ReplaceCharWithNull Used to form filter strings for Browse.
* ErrorWithFile Creates an error message with embedded filename
* OpenFileError Give error message for OpenFile error return
* ChopText Chop a file path to fit within a specified width
* DoesFileExist Checks if file is valid
*
*
* Copyright (c)1992 Microsoft Corporation, All Right Reserved
*/
#include "precomp.h"
#include "common.h"
#include <stdlib.h>
#include <commdlg.h>
#include <memory.h>
#include <cderr.h>
#include "utility.h"
OLEDBGDATA
/*
* HourGlassOn
*
* Purpose:
* Shows the hourglass cursor returning the last cursor in use.
*
* Parameters:
* None
*
* Return Value:
* HCURSOR Cursor in use prior to showing the hourglass.
*/
HCURSOR WINAPI HourGlassOn(void)
{
HCURSOR hCur;
hCur=SetCursor(LoadCursor(NULL, IDC_WAIT));
ShowCursor(TRUE);
return hCur;
}
/*
* HourGlassOff
*
* Purpose:
* Turns off the hourglass restoring it to a previous cursor.
*
* Parameters:
* hCur HCURSOR as returned from HourGlassOn
*
* Return Value:
* None
*/
void WINAPI HourGlassOff(HCURSOR hCur)
{
ShowCursor(FALSE);
SetCursor(hCur);
return;
}
/*
* Browse
*
* Purpose:
* Displays the standard GetOpenFileName dialog with the title of
* "Browse." The types listed in this dialog are controlled through
* iFilterString. If it's zero, then the types are filled with "*.*"
* Otherwise that string is loaded from resources and used.
*
* Parameters:
* hWndOwner HWND owning the dialog
* lpszFile LPSTR specifying the initial file and the buffer in
* which to return the selected file. If there is no
* initial file the first character of this string should
* be NULL.
* lpszInitialDir LPSTR specifying the initial directory. If none is to
* set (ie, the cwd should be used), then this parameter
* should be NULL.
* cchFile UINT length of pszFile
* iFilterString UINT index into the stringtable for the filter string.
* dwOfnFlags DWORD flags to OR with OFN_HIDEREADONLY
* nBrowseID
* lpfnHook Callback Hook Proceedure. Set if OFN_ENABLE_HOOK is
* in dwOfnFlags else it should be NULL.
*
* Return Value:
* BOOL TRUE if the user selected a file and pressed OK.
* FALSE otherwise, such as on pressing Cancel.
*/
BOOL WINAPI Browse(HWND hWndOwner, LPTSTR lpszFile, LPTSTR lpszInitialDir, UINT cchFile,
UINT iFilterString, DWORD dwOfnFlags, UINT nBrowseID, LPOFNHOOKPROC lpfnHook)
{
UINT cch;
TCHAR szFilters[256];
TCHAR szDlgTitle[128]; // that should be big enough
if (NULL == lpszFile || 0 == cchFile)
return FALSE;
/*
* Exact contents of the filter combobox is TBD. One idea
* is to take all the extensions in the RegDB and place them in here
* with the descriptive class name associate with them. This has the
* extra step of finding all extensions of the same class handler and
* building one extension string for all of them. Can get messy quick.
* UI demo has only *.* which we do for now.
*/
if (0 != iFilterString)
{
cch = LoadString(_g_hOleStdResInst, iFilterString, szFilters,
sizeof(szFilters)/sizeof(TCHAR));
}
else
{
szFilters[0] = 0;
cch = 1;
}
if (0 == cch)
return FALSE;
ReplaceCharWithNull(szFilters, szFilters[cch-1]);
// Prior string must also be initialized, if there is one.
OPENFILENAME ofn;
memset(&ofn, 0, sizeof(ofn));
ofn.lStructSize = sizeof(ofn);
ofn.hwndOwner = hWndOwner;
ofn.lpstrFile = lpszFile;
ofn.nMaxFile = cchFile;
ofn.lpstrFilter = szFilters;
ofn.nFilterIndex = 1;
ofn.lpfnHook = lpfnHook;
if (LoadString(_g_hOleStdResInst, IDS_BROWSE, szDlgTitle, sizeof(szDlgTitle)/sizeof(TCHAR)))
ofn.lpstrTitle = szDlgTitle;
ofn.hInstance = _g_hOleStdResInst;
if (NULL != lpszInitialDir)
ofn.lpstrInitialDir = lpszInitialDir;
ofn.Flags = OFN_HIDEREADONLY | dwOfnFlags;
if (bWin4)
ofn.Flags |= OFN_EXPLORER;
// Lastly, parent to tweak OFN parameters
if (hWndOwner != NULL)
SendMessage(hWndOwner, uMsgBrowseOFN, nBrowseID, (LPARAM)&ofn);
// On success, copy the chosen filename to the static display
BOOL bResult = StandardGetOpenFileName((LPOPENFILENAME)&ofn);
return bResult;
}
/*
* ReplaceCharWithNull
*
* Purpose:
* Walks a null-terminated string and replaces a given character
* with a zero. Used to turn a single string for file open/save
* filters into the appropriate filter string as required by the
* common dialog API.
*
* Parameters:
* psz LPTSTR to the string to process.
* ch int character to replace.
*
* Return Value:
* int Number of characters replaced. -1 if psz is NULL.
*/
int WINAPI ReplaceCharWithNull(LPTSTR psz, int ch)
{
int cChanged = 0;
if (psz == NULL)
return -1;
while ('\0' != *psz)
{
if (ch == *psz)
{
*psz++ = '\0';
cChanged++;
continue;
}
psz = CharNext(psz);
}
return cChanged;
}
/*
* ErrorWithFile
*
* Purpose:
* Displays a message box built from a stringtable string containing
* one %s as a placeholder for a filename and from a string of the
* filename to place there.
*
* Parameters:
* hWnd HWND owning the message box. The caption of this
* window is the caption of the message box.
* hInst HINSTANCE from which to draw the idsErr string.
* idsErr UINT identifier of a stringtable string containing
* the error message with a %s.
* lpszFile LPSTR to the filename to include in the message.
* uFlags UINT flags to pass to MessageBox, like MB_OK.
*
* Return Value:
* int Return value from MessageBox.
*/
int WINAPI ErrorWithFile(HWND hWnd, HINSTANCE hInst, UINT idsErr,
LPTSTR pszFile, UINT uFlags)
{
int iRet=0;
HANDLE hMem;
const UINT cb = (2*MAX_PATH);
LPTSTR psz1, psz2, psz3;
if (NULL == hInst || NULL == pszFile)
return iRet;
// Allocate three 2*MAX_PATH byte work buffers
hMem=GlobalAlloc(GHND, (DWORD)(3*cb)*sizeof(TCHAR));
if (NULL==hMem)
return iRet;
psz1 = (LPTSTR)GlobalLock(hMem);
psz2 = psz1+cb;
psz3 = psz2+cb;
if (0 != LoadString(hInst, idsErr, psz1, cb))
{
wsprintf(psz2, psz1, pszFile);
// Steal the caption of the dialog
GetWindowText(hWnd, psz3, cb);
iRet=MessageBox(hWnd, psz2, psz3, uFlags);
}
GlobalUnlock(hMem);
GlobalFree(hMem);
return iRet;
}
// returns width of line of text. this is a support routine for ChopText
static LONG GetTextWSize(HDC hDC, LPTSTR lpsz)
{
SIZE size;
if (GetTextExtentPoint(hDC, lpsz, lstrlen(lpsz), (LPSIZE)&size))
return size.cx;
else
return 0;
}
LPTSTR FindChar(LPTSTR lpsz, TCHAR ch)
{
while (*lpsz != 0)
{
if (*lpsz == ch)
return lpsz;
lpsz = CharNext(lpsz);
}
return NULL;
}
LPTSTR FindReverseChar(LPTSTR lpsz, TCHAR ch)
{
LPTSTR lpszLast = NULL;
while (*lpsz != 0)
{
if (*lpsz == ch)
lpszLast = lpsz;
lpsz = CharNext(lpsz);
}
return lpszLast;
}
static void WINAPI Abbreviate(HDC hdc, int nWidth, LPTSTR lpch, int nMaxChars)
{
/* string is too long to fit; chop it */
/* set up new prefix & determine remaining space in control */
LPTSTR lpszFileName = NULL;
LPTSTR lpszCur = CharNext(CharNext(lpch));
lpszCur = FindChar(lpszCur, TEXT('\\'));
// algorithm will insert \... so allocate extra 4
LPTSTR lpszNew = (LPTSTR)OleStdMalloc((lstrlen(lpch)+5) * sizeof(TCHAR));
if (lpszNew == NULL)
return;
if (lpszCur != NULL) // at least one backslash
{
*lpszNew = (TCHAR)0;
*lpszCur = (TCHAR)0;
lstrcpy(lpszNew, lpch);
*lpszCur = TEXT('\\');
// lpszNew now contains c: or \\servername
lstrcat(lpszNew, TEXT("\\..."));
// lpszNew now contains c:\... or \\servername\...
LPTSTR lpszEnd = lpszNew;
while (*lpszEnd != (TCHAR)0)
lpszEnd = CharNext(lpszEnd);
// lpszEnd is now at the end of c:\... or \\servername\...
// move down directories until it fits or no more directories
while (lpszCur != NULL)
{
*lpszEnd = (TCHAR)0;
lstrcat(lpszEnd, lpszCur);
if (GetTextWSize(hdc, lpszNew) <= nWidth &&
lstrlen(lpszNew) < nMaxChars)
{
lstrcpyn(lpch, lpszNew, nMaxChars);
OleStdFree(lpszNew);
return;
}
lpszCur = CharNext(lpszCur); // advance past backslash
lpszCur = FindChar(lpszCur, TEXT('\\'));
}
// try just ...filename and then shortening filename
lpszFileName = FindReverseChar(lpch, TEXT('\\'));
}
else
lpszFileName = lpch;
while (*lpszFileName != (TCHAR)0)
{
lstrcpy(lpszNew, TEXT("..."));
lstrcat(lpszNew, lpszFileName);
if (GetTextWSize(hdc, lpszNew) <= nWidth && lstrlen(lpszNew) < nMaxChars)
{
lstrcpyn(lpch, lpszNew, nMaxChars);
OleStdFree(lpszNew);
return;
}
lpszFileName = CharNext(lpszFileName);
}
OleStdFree(lpszNew);
// not even a single character fit
*lpch = (TCHAR)0;
}
/*
* ChopText
*
* Purpose:
* Parse a string (pathname) and convert it to be within a specified
* length by chopping the least significant part
*
* Parameters:
* hWnd window handle in which the string resides
* nWidth max width of string in pixels
* use width of hWnd if zero
* lpch pointer to beginning of the string
* nMaxChars maximum allowable number of characters (0 ignore)
*
* Return Value:
* pointer to the modified string
*/
LPTSTR WINAPI ChopText(HWND hWnd, int nWidth, LPTSTR lpch, int nMaxChars)
{
HDC hdc;
HFONT hfont;
HFONT hfontOld = NULL;
RECT rc;
if (!hWnd || !lpch)
return NULL;
if (nMaxChars == 0)
nMaxChars = 32768; // big number
/* Get length of static field. */
if (!nWidth)
{
GetClientRect(hWnd, (LPRECT)&rc);
nWidth = rc.right - rc.left;
}
/* Set up DC appropriately for the static control */
hdc = CreateIC(TEXT("DISPLAY"), NULL, NULL, NULL);
/* CreateIC can return NULL in low memory situations */
if (hdc != NULL)
{
hfont = (HFONT)SendMessage(hWnd, WM_GETFONT, 0, 0L);
if (NULL != hfont) // WM_GETFONT returns NULL if window uses system font
hfontOld = (HFONT)SelectObject(hdc, hfont);
/* check horizontal extent of string */
if (GetTextWSize(hdc, lpch) > nWidth || lstrlen(lpch) >= nMaxChars)
Abbreviate(hdc, nWidth, lpch, nMaxChars);
if (NULL != hfont)
SelectObject(hdc, hfontOld);
DeleteDC(hdc);
}
return lpch;
}
/*
* OpenFileError
*
* Purpose:
* display message for error returned from OpenFile
*
* Parameters:
* hDlg HWND of the dialog.
* nErrCode UINT error code returned in OFSTRUCT passed to OpenFile
* lpszFile LPSTR file name passed to OpenFile
*
* Return Value:
* None
*/
void WINAPI OpenFileError(HWND hDlg, UINT nErrCode, LPTSTR lpszFile)
{
switch (nErrCode)
{
case 0x0005: // Access denied
ErrorWithFile(hDlg, _g_hOleStdResInst, IDS_CIFILEACCESS, lpszFile,
MB_OK | MB_ICONEXCLAMATION);
break;
case 0x0020: // Sharing violation
ErrorWithFile(hDlg, _g_hOleStdResInst, IDS_CIFILESHARE, lpszFile,
MB_OK | MB_ICONEXCLAMATION);
break;
case 0x0002: // File not found
case 0x0003: // Path not found
ErrorWithFile(hDlg, _g_hOleStdResInst, IDS_CIINVALIDFILE, lpszFile,
MB_OK | MB_ICONEXCLAMATION);
break;
default:
ErrorWithFile(hDlg, _g_hOleStdResInst, IDS_CIFILEOPENFAIL, lpszFile,
MB_OK | MB_ICONEXCLAMATION);
break;
}
}
/*
* DoesFileExist
*
* Purpose:
* Determines if a file path exists
*
* Parameters:
* lpszFile LPTSTR - file name
* cchMax UINT - size of the lpszFile string buffer in characters.
*
* Return Value:
* BOOL TRUE if file exists, else FALSE.
*
* NOTE: lpszFile may be changed as a result of this call to match the first
* matching file name found by this routine.
*
*/
BOOL WINAPI DoesFileExist(LPTSTR lpszFile, UINT cchMax)
{
static const TCHAR *arrIllegalNames[] =
{
TEXT("LPT1"), TEXT("LPT2"), TEXT("LPT3"),
TEXT("COM1"), TEXT("COM2"), TEXT("COM3"), TEXT("COM4"),
TEXT("CON"), TEXT("AUX"), TEXT("PRN")
};
// check is the name is an illegal name (eg. the name of a device)
for (int i = 0; i < (sizeof(arrIllegalNames)/sizeof(arrIllegalNames[0])); i++)
{
if (lstrcmpi(lpszFile, arrIllegalNames[i])==0)
return FALSE;
}
// First try to find the file with an exact match
// check the file's attributes
DWORD dwAttrs = GetFileAttributes(lpszFile);
if (dwAttrs == 0xFFFFFFFF) // file wasn't found
{
// look in path for file
TCHAR szTempFileName[MAX_PATH];
LPTSTR lpszFilePart;
BOOL fFound = SearchPath(NULL, lpszFile, NULL, MAX_PATH, szTempFileName, &lpszFilePart) != 0;
if (!fFound)
{
// File wasn't found in the search path
// Try to append a .* and use FindFirstFile to try for a match in the current directory
UINT cchFile = lstrlen(lpszFile);
if (cchFile + 4 < MAX_PATH)
{
WIN32_FIND_DATA sFindFileData;
lstrcpy(szTempFileName,lpszFile);
lstrcpy(&szTempFileName[cchFile], TEXT("*.*"));
HANDLE hFindFile = FindFirstFile(szTempFileName, &sFindFileData);
if (INVALID_HANDLE_VALUE != hFindFile)
{
// found something
while (0 != (sFindFileData.dwFileAttributes & (FILE_ATTRIBUTE_DIRECTORY | FILE_ATTRIBUTE_TEMPORARY)))
{
// found a directory or a temporary file try again
if (!FindNextFile(hFindFile, &sFindFileData))
{
// Could only match a directory or temporary file.
FindClose(hFindFile);
return(FALSE);
}
}
// Copy the name of the found file into the end of the path in the
// temporary buffer (if any).
// First scan back for the last file separator.
UINT cchPath = lstrlen(szTempFileName);
while (cchPath)
{
if (_T('\\') == szTempFileName[cchPath - 1]
|| _T('/') == szTempFileName[cchPath - 1])
{
break;
}
cchPath--;
}
lstrcpyn(&szTempFileName[cchPath], sFindFileData.cFileName, MAX_PATH - cchPath);
fFound = TRUE;
FindClose(hFindFile);
}
}
}
if (fFound)
{
// copy the temporary buffer into szFile
lstrcpyn(lpszFile, szTempFileName, cchMax -1);
}
return(fFound);
}
else if (dwAttrs & (FILE_ATTRIBUTE_DIRECTORY|
FILE_ATTRIBUTE_TEMPORARY))
{
return FALSE;
}
return TRUE;
}
/*
* FormatStrings
*
* Purpose:
* Simple message formatting API compatible w/ different languages
*
* Note:
* Shamelessly stolen/modified from MFC source code
*
*/
void WINAPI FormatStrings(LPTSTR lpszDest, LPCTSTR lpszFormat,
LPCTSTR* rglpsz, int nString)
{
LPCTSTR pchSrc = lpszFormat;
while (*pchSrc != '\0')
{
if (pchSrc[0] == '%' && (pchSrc[1] >= '1' && pchSrc[1] <= '9'))
{
int i = pchSrc[1] - '1';
pchSrc += 2;
if (i >= nString)
*lpszDest++ = '?';
else if (rglpsz[i] != NULL)
{
lstrcpy(lpszDest, rglpsz[i]);
lpszDest += lstrlen(lpszDest);
}
}
else
{
#ifndef _UNICODE
if (IsDBCSLeadByte(*pchSrc))
*lpszDest++ = *pchSrc++; // copy first of 2 bytes
#endif
*lpszDest++ = *pchSrc++;
}
}
*lpszDest = '\0';
}
void WINAPI FormatString1(LPTSTR lpszDest, LPCTSTR lpszFormat, LPCTSTR lpsz1)
{
FormatStrings(lpszDest, lpszFormat, &lpsz1, 1);
}
void WINAPI FormatString2(LPTSTR lpszDest, LPCTSTR lpszFormat, LPCTSTR lpsz1,
LPCTSTR lpsz2)
{
LPCTSTR rglpsz[2];
rglpsz[0] = lpsz1;
rglpsz[1] = lpsz2;
FormatStrings(lpszDest, lpszFormat, rglpsz, 2);
}
// Replacement for stdlib atol,
// which didn't work and doesn't take far pointers.
// Must be tolerant of leading spaces.
//
//
LONG WINAPI Atol(LPTSTR lpsz)
{
signed int sign = +1;
UINT base = 10;
LONG l = 0;
if (NULL==lpsz)
{
OleDbgAssert (0);
return 0;
}
while (*lpsz == ' ' || *lpsz == '\t' || *lpsz == '\n')
lpsz++;
if (*lpsz=='-')
{
lpsz++;
sign = -1;
}
if (lpsz[0] == TEXT('0') && lpsz[1] == TEXT('x'))
{
base = 16;
lpsz+=2;
}
if (base == 10)
{
while (*lpsz >= '0' && *lpsz <= '9')
{
l = l * base + *lpsz - '0';
lpsz++;
}
}
else
{
OleDbgAssert(base == 16);
while (*lpsz >= '0' && *lpsz <= '9' ||
*lpsz >= 'A' && *lpsz <= 'F' ||
*lpsz >= 'a' && *lpsz <= 'f')
{
l = l * base;
if (*lpsz >= '0' && *lpsz <= '9')
l += *lpsz - '0';
else if (*lpsz >= 'a' && *lpsz <= 'f')
l += *lpsz - 'a' + 10;
else
l += *lpsz - 'A' + 10;
lpsz++;
}
}
return l * sign;
}
BOOL WINAPI IsValidClassID(REFCLSID clsid)
{
return clsid != CLSID_NULL;
}
/* PopupMessage
* ------------
*
* Purpose:
* Popup messagebox and get some response from the user. It is the same
* as MessageBox() except that the title and message string are loaded
* from the resource file.
*
* Parameters:
* hwndParent parent window of message box
* idTitle id of title string
* idMessage id of message string
* fuStyle style of message box
*/
int WINAPI PopupMessage(HWND hwndParent, UINT idTitle, UINT idMessage, UINT fuStyle)
{
TCHAR szTitle[256];
TCHAR szMsg[256];
LoadString(_g_hOleStdResInst, idTitle, szTitle, sizeof(szTitle)/sizeof(TCHAR));
LoadString(_g_hOleStdResInst, idMessage, szMsg, sizeof(szMsg)/sizeof(TCHAR));
return MessageBox(hwndParent, szMsg, szTitle, fuStyle);
}
/* DiffPrefix
* ----------
*
* Purpose:
* Compare (case-insensitive) two strings and return the prefixes of the
* the strings formed by removing the common suffix string from them.
* Integrity of tokens (directory name, filename and object names) are
* preserved. Note that the prefixes are converted to upper case
* characters.
*
* Parameters:
* lpsz1 string 1
* lpsz2 string 2
* lplpszPrefix1 prefix of string 1
* lplpszPrefix2 prefix of string 2
*
* Returns:
*
*/
void WINAPI DiffPrefix(LPCTSTR lpsz1, LPCTSTR lpsz2, TCHAR FAR* FAR* lplpszPrefix1, TCHAR FAR* FAR* lplpszPrefix2)
{
LPTSTR lpstr1;
LPTSTR lpstr2;
TCHAR szTemp1[MAX_PATH];
TCHAR szTemp2[MAX_PATH];
OleDbgAssert(lpsz1);
OleDbgAssert(lpsz2);
OleDbgAssert(*lpsz1);
OleDbgAssert(*lpsz2);
OleDbgAssert(lplpszPrefix1);
OleDbgAssert(lplpszPrefix2);
// need to copy into temporary for case insensitive compare
lstrcpy(szTemp1, lpsz1);
lstrcpy(szTemp2, lpsz2);
CharLower(szTemp1);
CharLower(szTemp2);
// do comparison
lpstr1 = szTemp1 + lstrlen(szTemp1);
lpstr2 = szTemp2 + lstrlen(szTemp2);
while ((lpstr1 > szTemp1) && (lpstr2 > szTemp2))
{
lpstr1 = CharPrev(szTemp1, lpstr1);
lpstr2 = CharPrev(szTemp2, lpstr2);
if (*lpstr1 != *lpstr2)
{
lpstr1 = CharNext(lpstr1);
lpstr2 = CharNext(lpstr2);
break;
}
}
// scan forward to first delimiter
while (*lpstr1 && *lpstr1 != '\\' && *lpstr1 != '!')
lpstr1 = CharNext(lpstr1);
while (*lpstr2 && *lpstr2 != '\\' && *lpstr2 != '!')
lpstr2 = CharNext(lpstr2);
*lpstr1 = '\0';
*lpstr2 = '\0';
// initialize in case of failure
*lplpszPrefix1 = NULL;
*lplpszPrefix2 = NULL;
// allocate memory for the result
*lplpszPrefix1 = (LPTSTR)OleStdMalloc((lstrlen(lpsz1)+1) * sizeof(TCHAR));
if (!*lplpszPrefix1)
return;
*lplpszPrefix2 = (LPTSTR)OleStdMalloc((lstrlen(lpsz2)+1) * sizeof(TCHAR));
if (!*lplpszPrefix2)
{
OleStdFree(*lplpszPrefix1);
*lplpszPrefix1 = NULL;
return;
}
// copy result
lstrcpyn(*lplpszPrefix1, lpsz1, lstrlen(szTemp1)+1);
lstrcpyn(*lplpszPrefix2, lpsz2, lstrlen(szTemp2)+1);
}
UINT WINAPI GetFileName(LPCTSTR lpszPathName, LPTSTR lpszTitle, UINT nMax)
{
// always capture the complete file name including extension (if present)
LPTSTR lpszTemp = (LPTSTR)lpszPathName;
for (LPCTSTR lpsz = lpszPathName; *lpsz != '\0'; lpsz = CharNext(lpsz))
{
// remember last directory/drive separator
if (*lpsz == '\\' || *lpsz == '/' || *lpsz == ':')
lpszTemp = CharNext(lpsz);
}
// lpszTitle can be NULL which just returns the number of bytes
if (lpszTitle == NULL)
return lstrlen(lpszTemp)+1;
// otherwise copy it into the buffer provided
lstrcpyn(lpszTitle, lpszTemp, nMax);
return 0;
}
BOOL WINAPI IsValidMetaPict(HGLOBAL hMetaPict)
{
BOOL fReturn = FALSE;
LPMETAFILEPICT pMF = (LPMETAFILEPICT) GlobalLock(hMetaPict);
if (pMF != NULL)
{
if (!IsBadReadPtr( pMF, sizeof(METAFILEPICT)))
{
if (GetMetaFileBitsEx(pMF->hMF, 0, 0))
{
fReturn = TRUE;
}
}
GlobalUnlock(hMetaPict);
}
return(fReturn);
}
/////////////////////////////////////////////////////////////////////////////