virtual L_INT LAnnContainer::FileInfoMemory(pMem, uMemSize, pAnnFileInfo, uStructSize)
Loads information about the annotation file located in memory into the specified ANNFILEINFO structure.
Pointer to the location in memory of the image file.
The size, in bytes, of the file referenced by pMem.
Pointer to the ANNFILEINFO structure to be filled with data from the image file.
Size in bytes, of the structure pointed to by pAnnFileInfo, for versioning. Use sizeof(ANNFILEINFO).
Value | Meaning |
---|---|
SUCCESS | The function was successful. |
< 1 | An error occurred. Refer to Return Codes. |
This function can be used to get information about a LEAD annotation file that is stored in memory.
To use this function, do the following:
Win32, x64.
L_INT LAnnContainer_FileInfoMemoryExample(LAnnContainer & AnnContainer, L_UINT uFormat)
{
L_INT nRet;
SAVEFILEOPTION SaveFileOption;
ANNFILEINFO AnnFileInfo;
L_TCHAR szMessage[256];
L_TCHAR * szFormat;
HGLOBAL hMem = NULL;
L_SIZE_T uMemSize;
L_UCHAR * pMem;
// Save the annotations as the first page of the file in memory
nRet = AnnContainer.SaveMemory(uFormat,FALSE, &hMem, &uMemSize);
if(nRet != SUCCESS)
return nRet;
// Flip and then save as the second page
nRet = AnnContainer.Flip(NULL, ANNFLAG_RECURSE);
if(nRet != SUCCESS)
return nRet;
SaveFileOption.uStructSize = sizeof(SAVEFILEOPTION);
SaveFileOption.Flags = ESO_INSERTPAGE;
SaveFileOption.PageNumber = 2;
nRet = AnnContainer.SaveMemory(uFormat, FALSE, &hMem, &uMemSize, &SaveFileOption);
if(nRet != SUCCESS)
return nRet;
// Rotate and then save as the third page
nRet = AnnContainer.Rotate(45.0, NULL, ANNFLAG_RECURSE);
if(nRet != SUCCESS)
return nRet;
SaveFileOption.PageNumber = 3;
nRet = AnnContainer.SaveMemory(uFormat, FALSE, &hMem, &uMemSize, &SaveFileOption);
if(nRet != SUCCESS)
return nRet;
// Get information about the file in memory
AnnFileInfo.uStructSize = sizeof(ANNFILEINFO);
AnnFileInfo.nOffset = 0;
pMem = (L_UCHAR *) GlobalLock(hMem);
nRet =AnnContainer.FileInfoMemory(pMem, (L_UINT)uMemSize, &AnnFileInfo, sizeof(AnnFileInfo));
if(nRet != SUCCESS)
return nRet;
GlobalUnlock(hMem);
switch (AnnFileInfo.uFormat)
{
case ANNFMT_NATIVE:
szFormat = TEXT("ANNFMT_NATIVE");
break;
case ANNFMT_WMF:
szFormat = TEXT("ANNFMT_WMF");
break;
case ANNFMT_ENCODED:
szFormat = TEXT("ANNFMT_ENCODED");
break;
default:
szFormat = TEXT("Unknown");
break;
}
wsprintf(szMessage, TEXT("Version: %d\nFormat: %s\nTotal Pages: %d"), AnnFileInfo.nVersion, szFormat, AnnFileInfo.nTotalPages);
MessageBox(NULL, szMessage, TEXT("Information"), MB_OK);
// Now, delete the second page
nRet = AnnContainer.DeletePageMemory(hMem, &uMemSize, 2);
if(nRet != SUCCESS)
return nRet;
// Again, get information about the file in memory
AnnFileInfo.uStructSize = sizeof(ANNFILEINFO);
AnnFileInfo.nOffset = 0;
pMem = (L_UCHAR *) GlobalLock(hMem);
nRet =(L_INT) AnnContainer.FileInfoMemory(pMem,(L_UINT) uMemSize, &AnnFileInfo, sizeof(AnnFileInfo));
if(nRet != SUCCESS)
return nRet;
GlobalUnlock(hMem);
wsprintf(szMessage, TEXT("Version: %d\nFormat: %s\nTotal Pages: %d"), AnnFileInfo.nVersion,
szFormat, AnnFileInfo.nTotalPages);
MessageBox(NULL, szMessage, TEXT("Information"), MB_OK);
GlobalFree(hMem);
return SUCCESS;
}
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