Presentation and one question about OpenDialog boxes

[Fernando Sales]

Hello everybody!

I'm Fernando Sales, this is my first time on this mailing list.
Currently, i'm from Brazil and now, IJ has been used by me for intravascular
ultrasound image processing.
I had some problem to use the OpenDialog class. More specifically, i ued it
to open a file and store this file's name.
But when i've called the OpenDialog for the second time, i've opened the
second file but i couldn't store the second file's name.
Is there any restritions for the use of OpenDialog boxes?

See you,
Fernando Sales

[Michael Schmid]

Hi Fernando,

maybe the path that you have specified is not null when you
create your second OpenDialog?
BTW, you can't *call* an OpenDialog for the second time, you
have to create a new OpenDialog.

Michael
________________________________________________________________

On 29 Jan 2008, at 23:43, Fernando Sales wrote:

> Hello everybody!
>
> I'm Fernando Sales, this is my first time on this mailing list.
> Currently, i'm from Brazil and now, IJ has been used by me for  
> intravascular
> ultrasound image processing.
> I had some problem to use the OpenDialog class. More specifically,  
> i ued it
> to open a file and store this file's name.
> But when i've called the OpenDialog for the second time, i've  
> opened the
> second file but i couldn't store the second file's name.
> Is there any restritions for the use of OpenDialog boxes?
>
> See you,
> Fernando Sales

[Fernando Sales]

Wayne and Michael,

I've called a "new OpenDialog()" twice but, in the second time, the title
wasn't updated and the method openDialog.getFileName() returned an empty
String but the second image was opened correctly.
At the end, there is a piece of code which describes what i'm talking about.
Thanks for helping!

Fernando Sales


*****************************************************************************************

import ij.*;
import ij.process.*;
import ij.io.OpenDialog;
import ij.plugin.*;
import java.util.*;

public class VH_FrameAnalysis
    implements PlugIn {
  ImagePlus imps;

  public void run(String args) {

   OpenDialog preOpener = new OpenDialog("Select PRE-Interv. Frame",
OpenDialog.getLastDirectory());
   String preName = preOpener.getFileName();
   ij.IJ.open(preName);

   preOpener = new OpenDialog("Select POST-Interv. Frame",
OpenDialog.getLastDirectory());
   System.out.println(preName);
   OpenDialog postOpener = new OpenDialog("Select POST-Interv. Frame",
OpenDialog.getLastDirectory());
   String postName = postOpener.getFileName();
   System.out.println(postName);
   ij.IJ.open(postName);

 }

  void showAbout() {
    IJ.showMessage("Teste");
  }
}






On Jan 30, 2008 6:38 AM, Michael Schmid <[hidden email]> wrote:

> Hi Fernando,
>
> maybe the path that you have specified is not null when you
> create your second OpenDialog?
> BTW, you can't *call* an OpenDialog for the second time, you
> have to create a new OpenDialog.
>
> Michael
> ________________________________________________________________
>
> On 29 Jan 2008, at 23:43, Fernando Sales wrote:
>
> > Hello everybody!
> >
> > I'm Fernando Sales, this is my first time on this mailing list.
> > Currently, i'm from Brazil and now, IJ has been used by me for
> > intravascular
> > ultrasound image processing.
> > I had some problem to use the OpenDialog class. More specifically,
> > i ued it
> > to open a file and store this file's name.
> > But when i've called the OpenDialog for the second time, i've
> > opened the
> > second file but i couldn't store the second file's name.
> > Is there any restritions for the use of OpenDialog boxes?
> >
> > See you,
>

[Michael Schmid]

Hi Fernando,

you specify the default directory (without a filename) as a
path. If you want to see the dialog, the path should be null.

Like this, the OpenDialog simply returns what you have put in:
getDirectory() will give you the directory you have put in and
getFileName() gives you an empty String because the filename
was empty (it was just a directory without a filename)

You should use
    new OpenDialog("Select PRE-Interv. Frame", null);

The dialogs that you have seen were created by ij.IJ.open()
because it got an empty string.

Michael
________________________________________________________________


On 30 Jan 2008, at 18:05, Fernando Sales wrote:

> Wayne and Michael,
>
> I've called a "new OpenDialog()" twice but, in the second time, the  
> title
> wasn't updated and the method openDialog.getFileName() returned an  
> empty
> String but the second image was opened correctly.
> At the end, there is a piece of code which describes what i'm  
> talking about.
> Thanks for helping!
>
> Fernando Sales
>
>
> **********************************************************************
> *******************
>
> import ij.*;
> import ij.process.*;
> import ij.io.OpenDialog;
> import ij.plugin.*;
> import java.util.*;
>
> public class VH_FrameAnalysis
>     implements PlugIn {
>   ImagePlus imps;
>
>   public void run(String args) {
>
>    OpenDialog preOpener = new OpenDialog("Select PRE-Interv. Frame",
> OpenDialog.getLastDirectory());
>    String preName = preOpener.getFileName();
>    ij.IJ.open(preName);
>
>    preOpener = new OpenDialog("Select POST-Interv. Frame",
> OpenDialog.getLastDirectory());
>    System.out.println(preName);
>    OpenDialog postOpener = new OpenDialog("Select POST-Interv. Frame",
> OpenDialog.getLastDirectory());
>    String postName = postOpener.getFileName();
>    System.out.println(postName);
>    ij.IJ.open(postName);
>
>  }
>
>   void showAbout() {
>     IJ.showMessage("Teste");
>   }
> }
>
>
>
>
>
>
> On Jan 30, 2008 6:38 AM, Michael Schmid <[hidden email]>  
> wrote:
>
>> Hi Fernando,
>>
>> maybe the path that you have specified is not null when you
>> create your second OpenDialog?
>> BTW, you can't *call* an OpenDialog for the second time, you
>> have to create a new OpenDialog.
>>
>> Michael
>> ________________________________________________________________
>>
>> On 29 Jan 2008, at 23:43, Fernando Sales wrote:
>>
>>> Hello everybody!
>>>
>>> I'm Fernando Sales, this is my first time on this mailing list.
>>> Currently, i'm from Brazil and now, IJ has been used by me for
>>> intravascular
>>> ultrasound image processing.
>>> I had some problem to use the OpenDialog class. More specifically,
>>> i ued it
>>> to open a file and store this file's name.
>>> But when i've called the OpenDialog for the second time, i've
>>> opened the
>>> second file but i couldn't store the second file's name.
>>> Is there any restritions for the use of OpenDialog boxes?
>>>
>>> See you,
>>

[Fernando Sales]

Michael,
It really works.
Thanks all for helping!

Fernando

On Jan 30, 2008 2:32 PM, Michael Schmid <[hidden email]> wrote:

> Hi Fernando,
>
> you specify the default directory (without a filename) as a
> path. If you want to see the dialog, the path should be null.
>
> Like this, the OpenDialog simply returns what you have put in:
> getDirectory() will give you the directory you have put in and
> getFileName() gives you an empty String because the filename
> was empty (it was just a directory without a filename)
>
> You should use
>    new OpenDialog("Select PRE-Interv. Frame", null);
>
> The dialogs that you have seen were created by ij.IJ.open()
> because it got an empty string.
>
> Michael
> ________________________________________________________________
>
>
> On 30 Jan 2008, at 18:05, Fernando Sales wrote:
>
> > Wayne and Michael,
> >
> > I've called a "new OpenDialog()" twice but, in the second time, the
> > title
> > wasn't updated and the method openDialog.getFileName() returned an
> > empty
> > String but the second image was opened correctly.
> > At the end, there is a piece of code which describes what i'm
> > talking about.
> > Thanks for helping!
> >
> > Fernando Sales
> >
> >
> > **********************************************************************
> > *******************
> >
> > import ij.*;
> > import ij.process.*;
> > import ij.io.OpenDialog;
> > import ij.plugin.*;
> > import java.util.*;
> >
> > public class VH_FrameAnalysis
> >     implements PlugIn {
> >   ImagePlus imps;
> >
> >   public void run(String args) {
> >
> >    OpenDialog preOpener = new OpenDialog("Select PRE-Interv. Frame",
> > OpenDialog.getLastDirectory());
> >    String preName = preOpener.getFileName();
> >    ij.IJ.open(preName);
> >
> >    preOpener = new OpenDialog("Select POST-Interv. Frame",
> > OpenDialog.getLastDirectory());
> >    System.out.println(preName);
> >    OpenDialog postOpener = new OpenDialog("Select POST-Interv. Frame",
> > OpenDialog.getLastDirectory());
> >    String postName = postOpener.getFileName();
> >    System.out.println(postName);
> >    ij.IJ.open(postName);
> >
> >  }
> >
> >   void showAbout() {
> >     IJ.showMessage("Teste");
> >   }
> > }
> >
> >
> >
> >
> >
> >
> > On Jan 30, 2008 6:38 AM, Michael Schmid <[hidden email]>
> > wrote:
> >
> >> Hi Fernando,
> >>
> >> maybe the path that you have specified is not null when you
> >> create your second OpenDialog?
> >> BTW, you can't *call* an OpenDialog for the second time, you
> >> have to create a new OpenDialog.
> >>
> >> Michael
> >> ________________________________________________________________
> >>
> >> On 29 Jan 2008, at 23:43, Fernando Sales wrote:
> >>
> >>> Hello everybody!
> >>>
> >>> I'm Fernando Sales, this is my first time on this mailing list.
> >>> Currently, i'm from Brazil and now, IJ has been used by me for
> >>> intravascular
> >>> ultrasound image processing.
> >>> I had some problem to use the OpenDialog class. More specifically,
> >>> i ued it
> >>> to open a file and store this file's name.
> >>> But when i've called the OpenDialog for the second time, i've
> >>> opened the
> >>> second file but i couldn't store the second file's name.
> >>> Is there any restritions for the use of OpenDialog boxes?
> >>>
> >>> See you,
> >>
>

--
**************************************************
Fernando José Ribeiro Sales
**************************************************
Email: [hidden email]
Tel: [phone]
**************************************************