private void _CloseFile()
{
// Close the file handle
if (!_hFile.IsInvalid)
{
CloseHandle((IntPtr)_hFile);
_hFile = HFILE.INVALID_HANDLE_VALUE;
}
// Release the IFileIsInUse instance which will remove it from the Running Object Table
_pfiu = null;
// Remove the file path from the dialog
IDC_INFO.Text = c_szInstructions;
}
private void _OpenFile(string pszPath)
{
// Close the file if it is already opened
_CloseFile();
// Initialize the IFileIsInUse object. We use some default flags here as an example. If you modify these you will notice Windows
// Explorer modify its File In Use dialog contents accordingly to match the usage type and available capabilities.
_pfiu = new CFileIsInUseImpl(Handle, pszPath, FILE_USAGE_TYPE.FUT_EDITING, OF_CAP.OF_CAP_CANCLOSE | OF_CAP.OF_CAP_CANSWITCHTO);
_pfiu.CloseFile += (s, e) => _CloseFile();
// The lack of FILE_SHARE_READ or FILE_SHARE_WRITE attributes for the dwShareMode parameter will cause the file to be locked from
// other processes.
_hFile = CreateFile(pszPath, Kernel32.FileAccess.FILE_GENERIC_READ, 0, null, FileMode.Open, FileFlagsAndAttributes.FILE_ATTRIBUTE_NORMAL | FileFlagsAndAttributes.FILE_FLAG_BACKUP_SEMANTICS);
if (!_hFile.IsInvalid)
{
IDC_INFO.Text = pszPath;
}
else
{
_pfiu = null;
}
}