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Re: Unable to get preview in raster open dialog Started by alwayssmiling at 02-19-2007 4:56. Topic has 6 replies. LEAD Support Fo... » Developer » Common Dialogs » Re: Unable to get preview in raster open dialog

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02-19-2007, 4:56 alwayssmiling Joined on 02-13-2007 Posts 36 Unable to get preview in raster open dialog Hi,         With the help raster open dialog im loading the image. In this dialog i want to get the image preview. So i set the property of rasterdialog preview property to true. But even though i set that property, its unable to display the preview. Wat may be the prob with it. Any extra properties i need to set to get the preview? Help me to solve this prob Thank u.      Report

02-20-2007, 15:23 GregR Joined on 05-31-2006 In House Posts 1,806 Re: Unable to get preview in raster open dialog What LEADTOOLS version and interface (API, COM, .NET libraries, etc.) are you using? I would suggest taking a look at the demo projects that ship with the toolkit since they typically display the preview in the open dialog.  The code for any of the demo projects are available in the Examples directory of your LEADTOOLS installation. Greg Ross LEADTOOLS Technical Support    Report

09-27-2007, 15:28 mbsiehs Joined on 09-27-2007 Posts 32 Re: Unable to get preview in raster open dialog I'm having the same problem.  I'm using the .NET library (32 bit) and I'm running on .NET 2.0.  I'm using version 15 of Leadtools.  The following code is placed in a .cs file that uses Leadtools, Leadtools.Codecs and Leadtools.WinForms.CommonDialogs.Form as does the MainDemo example.  In fact, if I copy and paste the following code in the body of the corresponding method in the example, the preview works with the same image.  All of my .dlls are the same version as those used in the example. What variable am I missing?  I get the preview window, but when I select an image I get the wait cursor for a while and then nothing in the preview. Thanks. Matt             RasterCodecs.Startup();             RasterOpenDialog ofd = new RasterOpenDialog(new RasterCodecs());             ofd.ShowPreview = true;             ofd.PreviewWindowVisible = true;             ofd.Title = "LEADTOOLS Open Dialog";             if (ofd.ShowDialog(this.parent) == DialogResult.OK)             {             }             RasterCodecs.Shutdown();    Report

09-27-2007, 15:54 BoydP Joined on 08-22-2007 Posts 230 Re: Unable to get preview in raster open dialog Do you have the proper codec dlls in your applications bin directory or added as a reference to the project? Boyd Perkins LEADTOOLS Technical Support    Report

09-27-2007, 16:50 mbsiehs Joined on 09-27-2007 Posts 32 Re: Unable to get preview in raster open dialog Yes, I have added the applicable references to the project and Visual Studio has placed them in the bin directories. I may have the piece of evidence that may solve this.  When I try to get the CodecImageInfo after the dialog returns DialogResult.OK, I get a crash that says "Invalid file format" and I'm trying to load up a .jpg.  That may be a clue. Thanks for such a prompt response. Matt    Report

09-27-2007, 17:08 BoydP Joined on 08-22-2007 Posts 230 Re: Unable to get preview in raster open dialog From the description of the problem it sounds like you are missing required dlls.  To load jpeg files you will need to have Leadtools.Codecs.Cmp.dll in your applications bin directory.  For more information on required files for loading different image formats please refer to the .NET help file section "Files to be included with your application". Boyd Perkins LEADTOOLS Technical Support    Report

09-27-2007, 17:32 mbsiehs Joined on 09-27-2007 Posts 32 Re: Unable to get preview in raster open dialog I did add Leadtools.Codecs.Cmp.dll to my project after reading the reference earlier with no luck.  I added it again and it worked.  The difference is -- I had to reboot Visual Studio.  Thanks Bill. Thanks for your help, LEAD. Matt    Report

LEAD Support Fo... » Developer » Common Dialogs » Re: Unable to get preview in raster open dialog

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