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#1 Posted : Friday, August 25, 2006 10:14:05 AM(UTC)

cmurphy  
cmurphy

Groups: Registered
Posts: 31


I'm converting code from version 13.0 to version 14.5. Old code was written by someone else:

public LTANNLib.LEADRasterAnnToolBarClass m_TheAnnToolbar = null;

private void ViewToolbar_Click(object sender, System.EventArgs e, string fileFullPath)
{
 LEAD.Drawing.Bitmap userBmp = new LEAD.Drawing.Bitmap(GetType(), "user.bmp");
 LTRASTERLib.LEADRasterFactoryClass factory = new LTRASTERLib.LEADRasterFactoryClass();
 object rasterObj = factory.CreateObject("LEADRaster.LEADRaster",
     "LEADTOOLS OCX Copyright (c) 1991-2001 LEAD Technologies, Inc.");
 LTRASTERLib.LEADRasterClass rasterTemp;
 try
 {
     rasterTemp = (LTRASTERLib.LEADRasterClass)rasterObj; //error here
     IntPtr hBitmap = userBmp.GetHbitmap();
     Graphics g = CreateGraphics();
     IntPtr hDC = g.GetHdc();
     rasterTemp.SetDDB(hDC.ToInt32(), hBitmap.ToInt32(), 0);
     g.ReleaseHdc(hDC);
     g.Dispose();
     DeleteObject(hBitmap);
     m_TheAnnToolbar.set_ButtonTool(m_TheAnnToolbar.ButtonCount,
         LTANNLib.AnnToolConstants.ANN_TOOL_USER_FIRST);
     m_TheAnnToolbar.set_ButtonBitmapUp(m_TheAnnToolbar.ButtonCount, rasterTemp.Bitmap);
     m_TheAnnToolbar.set_ButtonBitmapUp(m_TheAnnToolbar.ButtonCount, rasterTemp.Bitmap);
     m_TheAnnToolbar.set_ButtonBitmapDown(m_TheAnnToolbar.ButtonCount, rasterTemp.Bitmap);
     m_TheAnnToolbar.set_ButtonToolTipTextID(m_TheAnnToolbar.ButtonCount, -1);
     m_TheAnnToolbar.set_ButtonToolTipText(m_TheAnnToolbar.ButtonCount, "User Defined");
     m_TheAnnToolbar.ButtonCount++;
 }
 catch (System.Exception ex)
 {
  throw ex;
 }
}
[DllImport("gdi32")]
public static extern int DeleteObject(IntPtr hObject);

I've changed one line of code from:
LEAD.Drawing.Bitmap userBmp = new LEAD.Drawing.Bitmap(GetType(), "user.bmp");
To:
Bitmap userBmp = new Bitmap(GetType(), "user.bmp");

When I run it, it didn't error that line but it throw exception from:
rasterTemp = (LTRASTERLib.LEADRasterClass)rasterObj;

Here is an error detail:
Cannot create LeadRasterClass object window. ---> System.InvalidCastException: Unable to cast COM object of type 'System.__ComObject' to class type 'LTRASTERLib.LEADRasterClass'. COM components that enter the CLR and do not support IProvideClassInfo or that do not have any interop assembly registered will be wrapped in the __ComObject type. Instances of this type cannot be cast to any other class; however they can be cast to interfaces as long as the underlying COM component supports QueryInterface calls for the IID of the interface.
   at UserControl.ViewToolbar_Click(Object sender, EventArgs e, String fileFullPath)

I was unable to find information of LTRASTERLib.LEADRasterClass from help file. I don't know what is it.

1. Could you point me out where to look for in help file?

2. It was fine with version 13.0. Is there any additional/change that I should do for version 14.5?

Please help,

 

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#2 Posted : Sunday, August 27, 2006 11:41:54 PM(UTC)
Maen Hasan

Groups: Registered, Tech Support
Posts: 1,328

Was thanked: 1 time(s) in 1 post(s)

Hello,

Please try to use the following code instead of your code:
+-----------------------------+
...
const String strLic = "LEADTOOLS OCX Copyright (c) 1991-2004 LEAD Technologies, Inc.";
LTRASTERLib.LEADRasterFactoryClass factory = new LTRASTERLib.LEADRasterFactoryClass(); LTRASTERLib.LEADRasterClass rasterTemp;
try
{
    rasterTemp = (LTRASTERLib.LEADRasterClass) factory.CreateObject("LEADRaster.LEADRaster.140", strLic);
...
+-----------------------------+

Thanks,
Maen Badwan
LEADTOOLS Technical Support
 
#3 Posted : Monday, August 28, 2006 1:07:16 PM(UTC)

cmurphy  
cmurphy

Groups: Registered
Posts: 31


I've tried the code but it still throws same exception.

I've made a small project and I've got difference error:

System.Runtime.InteropServices.COMException (0x800401F3): Invalid class string (Exception from HRESULT: 0x800401F3 (CO_E_CLASSSTRING))

at LTRASTERLib.LEADRasterFactoryClass.CreateObject(String pszClassID, String pszLic)

at DrawingPackageControl.DrawingUserControl.ViewToolbar_Click(Object sender, EventArgs e, String fileFullPath) in Q:\Development\test\DPControl\DPControl\MainControl.cs:line 284

--- End of inner exception stack trace ---

I've sent my test project to support@leadtools.com. Please use 2nd project to review and let me know.

Thanks,

 
#4 Posted : Wednesday, August 30, 2006 5:09:21 AM(UTC)
Maen Hasan

Groups: Registered, Tech Support
Posts: 1,328

Was thanked: 1 time(s) in 1 post(s)

Hello Chanthirar,

I tried several times to run your project but I faced a lot of problem because of the missing references.
However, I reproduced the problem on my side and solved it. Please try to use the following code in your project:
+-----------------------------+
form1.cs:
using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Data;
using System.Drawing;
using System.Text;
using System.Windows.Forms;

namespace CSRasterCOM145
{
    public partial class Form1 : Form
    {
        public Form1()
        {
            InitializeComponent();
        }

        private void button1_Click(object sender, EventArgs e)
        {
            const String strLic = "LEADTOOLS OCX Copyright (c) 1991-2004 LEAD Technologies, Inc.";
            try
            {
                LTRASTERLib.LEADRasterFactoryClass factory = new LTRASTERLib.LEADRasterFactoryClass();
                LTRASTERLib.LEADRaster rasterTemp;
                rasterTemp = (LTRASTERLib.LEADRaster)factory.CreateObject("LEADRaster.LEADRaster.140", strLic);
            }
            catch (Exception e1)
            {
                MessageBox.Show(e1.Message);
            }
        }
    }
}
+-----------------------------+

Thanks,
Maen Badwan
LEADTOOLS Technical Support
 
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