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RasterOpenDialog Class
See Also  Members   Example 
Leadtools.WinForms.CommonDialogs.File Namespace : RasterOpenDialog Class




Displays the Open dialog box, and gets the options for Load.

Object Model


Syntax

Visual Basic (Declaration) 
Public Class RasterOpenDialog
Visual Basic (Usage)Copy Code
Dim instance As RasterOpenDialog
C# 
public class RasterOpenDialog
Managed Extensions for C++ 
public __gc class RasterOpenDialog
C++/CLI 
public ref class RasterOpenDialog

Example

Visual BasicCopy Code
Public Sub openDlg_Help(ByVal sender As Object, ByVal e As RasterDialogHelpEventArgs) Handles openDlg.Help
   Select Case e.Dialog
      Case RasterDialogHelpName.Open
         MessageBox.Show("Open dialog Help")
         Exit Select
      Case RasterDialogHelpName.LoadOptions
         MessageBox.Show("Load Options dialog Help")
         Exit Select
   End Select
End Sub

Public Sub openDlg_LoadProgress(ByVal sender As Object, ByVal e As RasterDialogLoadProgressEventArgs) Handles openDlg.LoadProgress
   Dim displayText As String

   displayText = "(" & e.FilePercent.ToString() & "%) of" & e.LoadRasterFileData.Name & "file is loaded"
   MessageBox.Show(displayText)

   displayText = "(" & e.TotalPercent.ToString() & "%) of all file(s) loading process is completed"
   MessageBox.Show(displayText)
End Sub

WithEvents openDlg As RasterOpenDialog


Public Sub RasterOpenDialogExample()
   Leadtools.Codecs.RasterCodecs.Startup()
   Dim rasterCodecs As RasterCodecs = New RasterCodecs()

   openDlg = New RasterOpenDialog(rasterCodecs)

   openDlg.Filter = New RasterOpenDialogLoadFormat() {New RasterOpenDialogLoadFormat("All Files", "*.*"), New RasterOpenDialogLoadFormat("LEAD", "*.cmp")}

   openDlg.CheckFileExists = True
   openDlg.CheckPathExists = True
   openDlg.DefaultExt = "cmp"
   openDlg.DereferenceLinks = True
   openDlg.EnableSizing = True
   openDlg.FileName = "Image.cmp"
   openDlg.FilterIndex = 2
   openDlg.GenerateThumbnail = False
   openDlg.InitialDirectory = "C:\Program Files\LEAD Technologies\LEADTOOLS 15\Images\"
   openDlg.LoadCompressed = True
   openDlg.LoadFileImage = False
   openDlg.LoadOptions = False
   openDlg.LoadRotated = False
   openDlg.Multiselect = True
   openDlg.PreviewWindowVisible = True
   openDlg.ShowDeletePage = True
   openDlg.ShowFileInformation = True
   openDlg.ShowGeneralOptions = True
   openDlg.ShowHelp = True
   openDlg.ShowLoadCompressed = True
   openDlg.ShowLoadOptions = True
   openDlg.ShowLoadRotated = True
   openDlg.ShowMultipage = True
   openDlg.ShowPdfOptions = True
   openDlg.ShowXpsOptions = True
   openDlg.ShowPreview = True
   openDlg.ShowProgressive = True
   openDlg.ShowRasterOptions = True
   openDlg.ShowTotalPages = True
   openDlg.Title = "Open Dialog"
   openDlg.UseFileStamptoPreview = True

   If DialogResult.OK = openDlg.ShowDialog(Nothing) Then
      Dim i As Integer = 0
      Do While i < openDlg.OpenedFileData.Count
         Dim fileDataItem As RasterDialogFileData = CType(openDlg.OpenedFileData(i), RasterDialogFileData)

         ' this is not an image file.
         If fileDataItem.Options Is Nothing Then
            GoTo Continue1
         End If

         Select Case fileDataItem.Options.FileType
            Case RasterDialogFileOptionsType.Meta
               If Not Nothing Is fileDataItem.Options.MetaOptions Then
                  rasterCodecs.Options.Wmf.Load.XResolution = fileDataItem.Options.MetaOptions.XResolution
                  rasterCodecs.Options.Wmf.Load.YResolution = fileDataItem.Options.MetaOptions.XResolution
               End If
               Exit Select

            Case RasterDialogFileOptionsType.Pdf
               If (Not Nothing Is fileDataItem.Options.PdfOptions) AndAlso rasterCodecs.Options.Pdf.IsEngineInstalled Then
                  rasterCodecs.Options.Pdf.Load.DisplayDepth = fileDataItem.Options.PdfOptions.DisplayDepth
                  rasterCodecs.Options.Pdf.Load.GraphicsAlpha = fileDataItem.Options.PdfOptions.GraphicsAlpha

                  If Not fileDataItem.Options.PdfOptions.Password Is Nothing Then
                     rasterCodecs.Options.Pdf.Load.Password = fileDataItem.Options.PdfOptions.Password
                  End If

                  rasterCodecs.Options.Pdf.Load.TextAlpha = fileDataItem.Options.PdfOptions.TextAlpha
                  rasterCodecs.Options.Pdf.Load.UseLibFonts = fileDataItem.Options.PdfOptions.UseLibFonts
                  rasterCodecs.Options.Pdf.Load.XResolution = fileDataItem.Options.PdfOptions.XResolution
                  rasterCodecs.Options.Pdf.Load.YResolution = fileDataItem.Options.PdfOptions.YResolution
               End If
               Exit Select

            Case RasterDialogFileOptionsType.Misc
               If Nothing Is fileDataItem.Options.MiscOptions Then
                  GoTo Continue1
               End If

               Select Case fileDataItem.FileInfo.Format
                  Case RasterImageFormat.Jbig
                     rasterCodecs.Options.Jbig.Load.Resolution = New Size(fileDataItem.Options.MiscOptions.XResolution, fileDataItem.Options.MiscOptions.YResolution)
                     Exit Select

                  Case RasterImageFormat.Cmw
                     rasterCodecs.Options.Jpeg2000.Load.CmwResolution = New Size(fileDataItem.Options.MiscOptions.XResolution, fileDataItem.Options.MiscOptions.YResolution)
                     Exit Select

                  Case RasterImageFormat.Jp2
                     rasterCodecs.Options.Jpeg2000.Load.Jp2Resolution = New Size(fileDataItem.Options.MiscOptions.XResolution, fileDataItem.Options.MiscOptions.YResolution)
                     Exit Select

                  Case RasterImageFormat.J2k
                     rasterCodecs.Options.Jpeg2000.Load.J2kResolution = New Size(fileDataItem.Options.MiscOptions.XResolution, fileDataItem.Options.MiscOptions.YResolution)
                     Exit Select
               End Select
               Exit Select
            Case RasterDialogFileOptionsType.Xps
               rasterCodecs.Options.Xps.Load.Resolution = New Size(fileDataItem.Options.XpsOptions.XResolution, fileDataItem.Options.XpsOptions.YResolution)
               Exit Select
         End Select

         rasterCodecs.Options.Load.Passes = fileDataItem.Passes
         rasterCodecs.Options.Load.Rotated = fileDataItem.LoadRotated
         rasterCodecs.Options.Load.Compressed = fileDataItem.LoadCompressed

         Dim loadedImage As RasterImage = rasterCodecs.Load(fileDataItem.Name, 0, CodecsLoadByteOrder.BgrOrGray, fileDataItem.PageNumber, fileDataItem.PageNumber)

         ' COPY THE 'loadedImage' IMAGE.

         loadedImage.Dispose()
Continue1:
         i += 1
      Loop
   End If
   Leadtools.Codecs.RasterCodecs.Shutdown()
End Sub
C#Copy Code
public void openDlg_Help(object sender, RasterDialogHelpEventArgs e) 
{ 
   switch(e.Dialog) 
   { 
      case RasterDialogHelpName.Open: 
         { 
            MessageBox.Show("Open dialog Help"); 
            break; 
         } 
      case RasterDialogHelpName.LoadOptions: 
         { 
            MessageBox.Show("Load Options dialog Help"); 
            break; 
         } 
   } 
} 
 
public void openDlg_LoadProgress(object sender, RasterDialogLoadProgressEventArgs e) 
{ 
   string displayText; 
 
   displayText = "(" + e.FilePercent.ToString() + "%) of" + e.LoadRasterFileData.Name + "file is loaded"; 
   MessageBox.Show(displayText); 
 
   displayText = "(" + e.TotalPercent.ToString() + "%) of all file(s) loading process is completed"; 
   MessageBox.Show(displayText); 
} 
 
 
public void RasterOpenDialogExample() 
{ 
   RasterCodecs.Startup(); 
   RasterCodecs rasterCodecs = new RasterCodecs(); 
 
   RasterOpenDialog openDlg = new RasterOpenDialog(rasterCodecs); 
 
   openDlg.Filter = new RasterOpenDialogLoadFormat[] 
   { 
      new RasterOpenDialogLoadFormat ( "All Files", "*.*" ), 
      new RasterOpenDialogLoadFormat ( "LEAD", "*.cmp" ) 
   }; 
 
   openDlg.CheckFileExists = true; 
   openDlg.CheckPathExists = true; 
   openDlg.DefaultExt = "cmp"; 
   openDlg.DereferenceLinks = true; 
   openDlg.EnableSizing = true; 
   openDlg.FileName = "Image.cmp"; 
   openDlg.FilterIndex = 2; 
   openDlg.GenerateThumbnail = false; 
   openDlg.InitialDirectory = @"C:\Program Files\LEAD Technologies\LEADTOOLS 15\Images\"; 
   openDlg.LoadCompressed = true; 
   openDlg.LoadFileImage = false; 
   openDlg.LoadOptions = false; 
   openDlg.LoadRotated = false; 
   openDlg.Multiselect = true; 
   openDlg.PreviewWindowVisible = true; 
   openDlg.ShowDeletePage = true; 
   openDlg.ShowFileInformation = true; 
   openDlg.ShowGeneralOptions = true; 
   openDlg.ShowHelp = true; 
   openDlg.ShowLoadCompressed = true; 
   openDlg.ShowLoadOptions = true; 
   openDlg.ShowLoadRotated = true; 
   openDlg.ShowMultipage = true; 
   openDlg.ShowPdfOptions = true; 
   openDlg.ShowXpsOptions = true; 
   openDlg.ShowPreview = true; 
   openDlg.ShowProgressive = true; 
   openDlg.ShowRasterOptions = true; 
   openDlg.ShowTotalPages = true; 
   openDlg.Title = "Open Dialog"; 
   openDlg.UseFileStamptoPreview = true; 
   openDlg.Help += new EventHandler<RasterDialogHelpEventArgs>(openDlg_Help); 
 
   // if you set "openDlg.LoadFileImage = true" this event will be fired 
   openDlg.LoadProgress += new EventHandler<RasterDialogLoadProgressEventArgs>(openDlg_LoadProgress); 
 
   if(DialogResult.OK == openDlg.ShowDialog(null)) 
   { 
      for(int i = 0; i < openDlg.OpenedFileData.Count; i++) 
      { 
         RasterDialogFileData fileDataItem = openDlg.OpenedFileData[i]; 
 
         // this is not an image file. 
         if(fileDataItem.Options == null) 
         { 
            continue; 
         } 
 
         switch(fileDataItem.Options.FileType) 
         { 
            case RasterDialogFileOptionsType.Meta: 
               { 
                  if(null != fileDataItem.Options.MetaOptions) 
                  { 
                     rasterCodecs.Options.Wmf.Load.XResolution = fileDataItem.Options.MetaOptions.XResolution; 
                     rasterCodecs.Options.Wmf.Load.YResolution = fileDataItem.Options.MetaOptions.XResolution; 
                  } 
                  break; 
               } 
 
            case RasterDialogFileOptionsType.Pdf: 
               { 
                  if((null != fileDataItem.Options.PdfOptions) && 
                        rasterCodecs.Options.Pdf.IsEngineInstalled) 
                  { 
                     rasterCodecs.Options.Pdf.Load.DisplayDepth = fileDataItem.Options.PdfOptions.DisplayDepth; 
                     rasterCodecs.Options.Pdf.Load.GraphicsAlpha = fileDataItem.Options.PdfOptions.GraphicsAlpha; 
 
                     if(fileDataItem.Options.PdfOptions.Password != null) 
                     { 
                        rasterCodecs.Options.Pdf.Load.Password = fileDataItem.Options.PdfOptions.Password; 
                     } 
 
                     rasterCodecs.Options.Pdf.Load.TextAlpha = fileDataItem.Options.PdfOptions.TextAlpha; 
                     rasterCodecs.Options.Pdf.Load.UseLibFonts = fileDataItem.Options.PdfOptions.UseLibFonts; 
                     rasterCodecs.Options.Pdf.Load.XResolution = fileDataItem.Options.PdfOptions.XResolution; 
                     rasterCodecs.Options.Pdf.Load.YResolution = fileDataItem.Options.PdfOptions.YResolution; 
                  } 
                  break; 
               } 
 
            case RasterDialogFileOptionsType.Misc: 
               { 
                  if(null == fileDataItem.Options.MiscOptions) 
                  { 
                     continue; 
                  } 
 
                  switch(fileDataItem.FileInfo.Format) 
                  { 
                     case RasterImageFormat.Jbig: 
                        { 
                           rasterCodecs.Options.Jbig.Load.Resolution = new Size(fileDataItem.Options.MiscOptions.XResolution, 
                              fileDataItem.Options.MiscOptions.YResolution); 
                           break; 
                        } 
 
                     case RasterImageFormat.Cmw: 
                        { 
                           rasterCodecs.Options.Jpeg2000.Load.CmwResolution = new Size(fileDataItem.Options.MiscOptions.XResolution, 
                              fileDataItem.Options.MiscOptions.YResolution); 
                           break; 
                        } 
 
                     case RasterImageFormat.Jp2: 
                        { 
                           rasterCodecs.Options.Jpeg2000.Load.Jp2Resolution = new Size(fileDataItem.Options.MiscOptions.XResolution, 
                              fileDataItem.Options.MiscOptions.YResolution); 
                           break; 
                        } 
 
                     case RasterImageFormat.J2k: 
                        { 
                           rasterCodecs.Options.Jpeg2000.Load.J2kResolution = new Size(fileDataItem.Options.MiscOptions.XResolution, 
                              fileDataItem.Options.MiscOptions.YResolution); 
                           break; 
                        } 
                  } 
                  break; 
               } 
            case RasterDialogFileOptionsType.Xps: 
               { 
                  rasterCodecs.Options.Xps.Load.Resolution = new Size(fileDataItem.Options.XpsOptions.XResolution, 
                     fileDataItem.Options.XpsOptions.YResolution); 
 
                  break; 
               } 
         } 
 
         rasterCodecs.Options.Load.Passes = fileDataItem.Passes; 
         rasterCodecs.Options.Load.Rotated = fileDataItem.LoadRotated; 
         rasterCodecs.Options.Load.Compressed = fileDataItem.LoadCompressed; 
 
         RasterImage loadedImage = rasterCodecs.Load(fileDataItem.Name, 
            0, 
            CodecsLoadByteOrder.BgrOrGray, 
            fileDataItem.PageNumber, 
            fileDataItem.PageNumber); 
 
         // COPY THE 'loadedImage' IMAGE. 
 
         loadedImage.Dispose(); 
      } 
   } 
   RasterCodecs.Shutdown(); 
}

Remarks

The Open dialog can be seen below:

Inheritance Hierarchy

System.Object
   Leadtools.WinForms.CommonDialogs.File.RasterOpenDialog

Requirements

Target Platforms: Microsoft .NET Framework 2.0, Windows 98, Windows NT 4.0, Windows Millennium Edition, Windows 2000, Windows XP Home Edition, Windows XP Professional, Windows Server 2003 family

See Also