Re: Presentation and one question about OpenDialog boxes

Posted by Michael Schmid on Jan 30, 2008; 5:32pm
URL: http://imagej.273.s1.nabble.com/Presentation-and-one-question-about-OpenDialog-boxes-tp3697355p3697358.html

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,
>>