/// <summary>
/// Sets up the data structures necessary to display the OpenFileDialog
/// </summary>
public InsertImageDialog(string defaultExtension, string directoryName, IWin32Window parent)
{
//for thumbnail later
thumbListener = new ThumbnailReadinessListener(parent.Handle, this);
// Need two buffers in unmanaged memory to hold the filename
// Note: the multiplication by 2 is to allow for Unicode (16-bit) characters
_fileNameBuffer = Marshal.AllocCoTaskMem(2 * _MAX_PATH);
_fileTitleBuffer = Marshal.AllocCoTaskMem(2 * _MAX_PATH);
_directoryBuffer = Marshal.AllocCoTaskMem(2 * _MAX_PATH);
if (directoryName == String.Empty)
{
directoryName = Environment.GetFolderPath(Environment.SpecialFolder.MyPictures);
}
// Zero these two buffers
byte[] zeroBuffer = new byte[2 * (_MAX_PATH + 1)];
for (int i = 0; i < 2 * (_MAX_PATH + 1); i++)
{
zeroBuffer[i] = 0;
}
Marshal.Copy(zeroBuffer, 0, _fileNameBuffer, 2 * _MAX_PATH);
Marshal.Copy(zeroBuffer, 0, _fileTitleBuffer, 2 * _MAX_PATH);
Marshal.Copy(zeroBuffer, 0, _directoryBuffer, 2 * _MAX_PATH);
// copy initial directory name into unmanaged memory buffer
byte[] directoryBytes = Encoding.Unicode.GetBytes(directoryName);
Marshal.Copy(directoryBytes, 0, _directoryBuffer, directoryBytes.Length);
// Create an in-memory Win32 dialog template; this will be a "child" window inside the FileOpenDialog
// We have no use for this child window, except that its presence allows us to capture events when
// the user interacts with the FileOpenDialog
_ipTemplate = BuildDialogTemplate();
// Populate the OPENFILENAME structure
// The flags specified are the minimal set to get the appearance and behaviour we need
_ofn.lStructSize = Marshal.SizeOf(_ofn);
_ofn.lpstrFile = _fileNameBuffer;
_ofn.nMaxFile = _MAX_PATH + 1;
_ofn.lpstrDefExt = Marshal.StringToCoTaskMemUni(defaultExtension);
_ofn.lpstrFileTitle = _fileTitleBuffer;
_ofn.nMaxFileTitle = _MAX_PATH + 1;
_ofn.lpstrInitialDir = _directoryBuffer;
_ofn.lpstrFilter = Marshal.StringToCoTaskMemUni(String.Format(CultureInfo.InvariantCulture, "{0} \0*.gif;*.jpg;*.jpeg;*.png\0{1} \0*.*\0\0", Res.Get(StringId.ImagesFilterString), Res.Get(StringId.AllFilesFilterString)));
_ofn.Flags = OpenFileNameFlags.HideReadOnly | OpenFileNameFlags.EnableHook |
OpenFileNameFlags.EnableTemplateHandle | OpenFileNameFlags.EnableSizing
| OpenFileNameFlags.Explorer
| OpenFileNameFlags.FileMustExist | OpenFileNameFlags.PathMustExist;
if (MarketizationOptions.IsFeatureEnabled(MarketizationOptions.Feature.AllowMultiSelectImage))
{
_ofn.Flags |= OpenFileNameFlags.AllowMultiSelect;
}
_ofn.hInstance = _ipTemplate;
string title = String.Format(CultureInfo.InvariantCulture, "{0}\0\0", Res.Get(StringId.InsertPicture));
_ofn.lpstrTitle = Marshal.StringToCoTaskMemUni(title);
_ofn.lpfnHook = new OfnHookProc(MyHookProc);
_ofn.hwndOwner = parent.Handle;
}
/// <summary>
/// Sets up the data structures necessary to display the OpenFileDialog
/// </summary>
public InsertImageDialog(string defaultExtension, string directoryName, IWin32Window parent)
{
//for thumbnail later
thumbListener = new ThumbnailReadinessListener(parent.Handle, this);
// Need two buffers in unmanaged memory to hold the filename
// Note: the multiplication by 2 is to allow for Unicode (16-bit) characters
_fileNameBuffer = Marshal.AllocCoTaskMem(2 * _MAX_PATH);
_fileTitleBuffer = Marshal.AllocCoTaskMem(2 * _MAX_PATH);
_directoryBuffer = Marshal.AllocCoTaskMem(2 * _MAX_PATH);
if (directoryName == String.Empty)
{
directoryName = Environment.GetFolderPath(Environment.SpecialFolder.MyPictures);
}
// Zero these two buffers
byte[] zeroBuffer = new byte[2 * (_MAX_PATH + 1)];
for (int i = 0; i < 2 * (_MAX_PATH + 1); i++) zeroBuffer[i] = 0;
Marshal.Copy(zeroBuffer, 0, _fileNameBuffer, 2 * _MAX_PATH);
Marshal.Copy(zeroBuffer, 0, _fileTitleBuffer, 2 * _MAX_PATH);
Marshal.Copy(zeroBuffer, 0, _directoryBuffer, 2 * _MAX_PATH);
// copy initial directory name into unmanaged memory buffer
byte[] directoryBytes = Encoding.Unicode.GetBytes(directoryName);
Marshal.Copy(directoryBytes, 0, _directoryBuffer, directoryBytes.Length);
// Create an in-memory Win32 dialog template; this will be a "child" window inside the FileOpenDialog
// We have no use for this child window, except that its presence allows us to capture events when
// the user interacts with the FileOpenDialog
_ipTemplate = BuildDialogTemplate();
// Populate the OPENFILENAME structure
// The flags specified are the minimal set to get the appearance and behaviour we need
_ofn.lStructSize = Marshal.SizeOf(_ofn);
_ofn.lpstrFile = _fileNameBuffer;
_ofn.nMaxFile = _MAX_PATH + 1;
_ofn.lpstrDefExt = Marshal.StringToCoTaskMemUni(defaultExtension);
_ofn.lpstrFileTitle = _fileTitleBuffer;
_ofn.nMaxFileTitle = _MAX_PATH + 1;
_ofn.lpstrInitialDir = _directoryBuffer;
_ofn.lpstrFilter = Marshal.StringToCoTaskMemUni(String.Format(CultureInfo.InvariantCulture, "{0} \0*.gif;*.jpg;*.jpeg;*.png\0{1} \0*.*\0\0", Res.Get(StringId.ImagesFilterString), Res.Get(StringId.AllFilesFilterString)));
_ofn.Flags = OpenFileNameFlags.HideReadOnly | OpenFileNameFlags.EnableHook |
OpenFileNameFlags.EnableTemplateHandle | OpenFileNameFlags.EnableSizing
| OpenFileNameFlags.Explorer
| OpenFileNameFlags.FileMustExist | OpenFileNameFlags.PathMustExist;
if (MarketizationOptions.IsFeatureEnabled(MarketizationOptions.Feature.AllowMultiSelectImage))
{
_ofn.Flags |= OpenFileNameFlags.AllowMultiSelect;
}
_ofn.hInstance = _ipTemplate;
string title = String.Format(CultureInfo.InvariantCulture, "{0}\0\0", Res.Get(StringId.InsertPicture));
_ofn.lpstrTitle = Marshal.StringToCoTaskMemUni(title);
_ofn.lpfnHook = new OfnHookProc(MyHookProc);
_ofn.hwndOwner = parent.Handle;
}
