protected override bool RunDialog(IntPtr hwndOwner)
{
bool flag;
OPENFILENAME_I.WndProc proc = new OPENFILENAME_I.WndProc(this.HookProc);
OPENFILENAME_I ofn = new OPENFILENAME_I();
try
{
this._charBuffer = CharBuffer.CreateBuffer(0x2000);
if (this._fileNames != null)
{
this._charBuffer.PutString(this._fileNames[0]);
}
ofn.lStructSize = Marshal.SizeOf(typeof(OPENFILENAME_I));
ofn.hwndOwner = hwndOwner;
ofn.hInstance = IntPtr.Zero;
ofn.lpstrFilter = MakeFilterString(this._filter, this.DereferenceLinks);
ofn.nFilterIndex = this._filterIndex;
ofn.lpstrFile = this._charBuffer.AllocCoTaskMem();
ofn.nMaxFile = this._charBuffer.Length;
ofn.lpstrInitialDir = this._initialDirectory;
ofn.lpstrTitle = this._title;
ofn.Flags = this.Options | 0x880020;
ofn.lpfnHook = proc;
ofn.FlagsEx = 0x1000000;
if ((this._defaultExtension != null) && this.AddExtension)
{
ofn.lpstrDefExt = this._defaultExtension;
}
if (_fakeKey != null)
{
ResetPlaces();
}
if (m_places != null)
{
SetupFakeRegistryTree();
}
flag = this.RunFileDialog(ofn);
}
finally
{
this._charBuffer = null;
if (ofn.lpstrFile != IntPtr.Zero)
{
Marshal.FreeCoTaskMem(ofn.lpstrFile);
}
try
{
if (m_places != null)
{
ResetPlaces();
}
}
catch
{
}
}
return(flag);
}
internal override bool RunFileDialog(OPENFILENAME_I ofn)
{
bool saveFileName = false;
saveFileName = NativeMethods.GetSaveFileName(ofn);
if (!saveFileName)
{
switch (NativeMethods.CommDlgExtendedError())
{
case 0x3001:
throw new InvalidOperationException("FileDialogSubClassFailure");
case 0x3002:
throw new InvalidOperationException("FileDialogInvalidFileName" + base.SafeFileName);
case 0x3003:
throw new InvalidOperationException("FileDialogBufferTooSmall");
}
}
return(saveFileName);
}
private bool DoFileOk(IntPtr lpOFN)
{
OPENFILENAME_I openfilename_i = (OPENFILENAME_I)Marshal.PtrToStructure(lpOFN, typeof(OPENFILENAME_I));
int num = this._dialogOptions;
int num2 = this._filterIndex;
string[] strArray = this._fileNames;
bool flag = false;
try
{
this._dialogOptions = (this._dialogOptions & -2) | (openfilename_i.Flags & 1);
this._filterIndex = openfilename_i.nFilterIndex;
this._charBuffer.PutCoTaskMem(openfilename_i.lpstrFile);
if (!this.GetOption(0x200))
{
this._fileNames = new string[] { this._charBuffer.GetString() };
}
else
{
this._fileNames = GetMultiselectFiles(this._charBuffer);
}
if (this.ProcessFileNames())
{
CancelEventArgs e = new CancelEventArgs();
this.OnFileOk(e);
flag = !e.Cancel;
}
}
finally
{
if (!flag)
{
this._dialogOptions = num;
this._filterIndex = num2;
this._fileNames = strArray;
}
}
return(flag);
}
internal abstract bool RunFileDialog(OPENFILENAME_I ofn);
private IntPtr ProcOnNotify(IntPtr hwnd, IntPtr lParam)
{
IntPtr hres = IntPtr.Zero;
OFNOTIFY structure = (OFNOTIFY)Marshal.PtrToStructure(lParam, typeof(OFNOTIFY));
switch ((NativeMethods.DialogChangeStatus)structure.hdr_code)
{
case NativeMethods.DialogChangeStatus.CDN_FILEOK: //- 606:
if (this._ignoreSecondFileOkNotification)
{
if (this._fileOkNotificationCount != 0)
{
this._ignoreSecondFileOkNotification = false;
NativeMethods.CriticalSetWindowLong(new HandleRef(this, hwnd), 0, InvalidIntPtr);
hres = InvalidIntPtr;
break;
}
this._fileOkNotificationCount = 1;
}
if (!this.DoFileOk(structure.lpOFN))
{
NativeMethods.CriticalSetWindowLong(new HandleRef(this, hwnd), 0, InvalidIntPtr);
hres = InvalidIntPtr;
}
break;
case NativeMethods.DialogChangeStatus.CDN_TYPECHANGE:
{
OPENFILENAME_I ofn = (OPENFILENAME_I)Marshal.PtrToStructure(structure.lpOFN, typeof(OPENFILENAME_I));
int i = ofn.nFilterIndex;
OnFilterChanged(this, i);
}
break;
case NativeMethods.DialogChangeStatus.CDN_HELP: // - 605:
break;
case NativeMethods.DialogChangeStatus.CDN_FOLDERCHANGE: //- 603:
{
StringBuilder folderPath = new StringBuilder(256);
NativeMethods.SendMessage(new HandleRef(this, structure.hdr_hwndFrom), (int)DialogChangeProperties.CDM_GETFOLDERPATH, (IntPtr)256, folderPath);
OnPathChanged(this, folderPath.ToString());
folderPath.Length = 0;
}
break;
case NativeMethods.DialogChangeStatus.CDN_SHAREVIOLATION: //- 604:
this._ignoreSecondFileOkNotification = true;
this._fileOkNotificationCount = 0;
break;
case NativeMethods.DialogChangeStatus.CDN_SELCHANGE: //- 602:
{
OPENFILENAME_I openfilename_i = (OPENFILENAME_I)Marshal.PtrToStructure(structure.lpOFN, typeof(OPENFILENAME_I));
int num = (int)NativeMethods.UnsafeSendMessage(this._hwndFileDialog, 0x464, IntPtr.Zero, IntPtr.Zero);
if (num > openfilename_i.nMaxFile)
{
int size = num + 0x800;
CharBuffer buffer = CharBuffer.CreateBuffer(size);
IntPtr ptr2 = buffer.AllocCoTaskMem();
Marshal.FreeCoTaskMem(openfilename_i.lpstrFile);
openfilename_i.lpstrFile = ptr2;
openfilename_i.nMaxFile = size;
this._charBuffer = buffer;
Marshal.StructureToPtr(openfilename_i, structure.lpOFN, true);
Marshal.StructureToPtr(structure, lParam, true);
}
StringBuilder filePath = new StringBuilder(256);
NativeMethods.SendMessage(new HandleRef(this, structure.hdr_hwndFrom), (uint)DialogChangeProperties.CDM_GETFILEPATH, (IntPtr)256, filePath);
OnPathChanged(this, filePath.ToString());
filePath.Length = 0;
break;
}
case NativeMethods.DialogChangeStatus.CDN_INITDONE: //- 601:
{
NativeMethods.PostMessage(new HandleRef(this, this._hwndFileDialogEmbedded), MSG_POST_CREATION, IntPtr.Zero, IntPtr.Zero);
}
break;
}
return(hres);
}
internal static extern bool GetSaveFileName([In, Out] OPENFILENAME_I ofn);