Regarding Drag N Drop

I have created an environment where all the defined sources are allowed to drop in.But i'am unable to identify one particular drag source in the drop event.
I'am using one Jtable as target for different Jtables.
I have not defined source in the target class.
That means i'am taking the dragged data through the
getTransferData method of the interface DropTargetLIstener.
Plz Reply !!

You might try to look at:
http://www.javaworld.com/javaworld/javatips/jw-javatip97_p.html

Similar Messages

Regarding - Drag and Drop operations between two outlinefields

Hi,
Has any one tried the drag and drop operations between two Outline widgets in a window.Any help appreciated.
Thanks
balsub

There is no configuration for it. It should work.
Can you try it in a different user account. If it works in a different account, then it is likely something in your current user account that is messed up. If it doesn't work in another user account, then it is likely something with Mail, itself.
You could try downloading and installing the 10.6.7 combo update. That may repair what is wrong.

Drag and Drop - Application not responding

Hello,
I have a problem regarding Drag and Drop in Mavericks (but probably all versions):
This is especially concerning Drag and Drop from Mail or Microsoft Outlook to another application (in this case a Java Application).
I know that it's only possible to drag mails to the desktop, where they are saved as an eml file.
My idea was to use the Drag and Drop mechanism as a trigger for calling an Apple Script (out of my Java Application) which saves the selected mail(s) as eml, for my application later picking them up in an defined folder. Basically this works just fine BUT Mail as well as Outlook does not respond to the tell statement of my Apple Script until the dragged mail snaps back to the source application after about 20 seconds. While the Apple Script waits for the mail application to respond, both applications (mail application as well as my own application) show "Application not responding" in dock.
Does anybody have an idea how I can get the mail applications get to respond earlier? Probably a second instance, killing of the drag/drop event or anything else?
Regards
Benjamin

Hi
I am also facing the same problem. Did u find any solution for this problem. If yes, can u post the solution.
Thanx.

Drag n Drop question

hi. this is what i want to do:
drag a file from a windows desktop, drop it into an applet that exists in a browser.
the applet reads the local path and filename of the dropped object, and uses that to retrieve the file from the local system and uploads it via ftp to the server where the applet was downloaded from.
i know how to do the basic drag and drop stuff, DropListeners and all, as well as the ftp transferring. but when i drop a Windows object into the applet in the browser and try to find out anything about it (with getTransferData()), i get exceptions thrown (InvalidDndOperationException).
My question is: how can i get the path and filename of a Windows object dropped into an Applet existing in a browser?
please reply to my email address if you can: [email protected] . thanks

hi hool
Can i ask you a question?? You seem to know a little more then me regarding Drag and drop. In my program i have actually got the basic stuuf working for drag and drop, in saying that i have added a source area to a panel and placed this at the north of my canvas , i have also created a target panel and placed it south to my canvas. SO now i can drag from the source area to my target area. What i want to do is when i hit a RUN button it goes and checks all the components in my target area and maybe carry out an action on what is there. Can this be done or am i just talking goobly gooke. Sorry i can't answer your question.
Silla_34

Help on drag and drop function

Hi guys,
I have a problem creating a drag and drop function for a certain task. The task is as stated below:
1. Create a VI that enables a user to drag and drop multiple image files into it.
2. I was thinking of storing all the file names into an array of file names
3. VI will then convert the image format into an array of 1024 by 768 binary numbers.
Task number 3 I have already done but I'm struggling with this drag and drop function (Task 1 and 2) and I have read a couple of entries regarding drag and drop function but none fits my specifications.
In the meantime I can only allow 1 file to be opened by a user at a time and it is quite frustrating if the user has to open like 10 files. He will need to navigate to the folder, select the file, click ok and repeat this for 10 times.
Hence, I need your help to guide me to create a drag and drop function that allows me to open a file and select all the images 1 want at 1 time.
Further information: I am using IMAQ to do the image processing.
Thanks in advance.
From
Ridwan

The Gtoolbox has sourcecode for this.
Ton
Free Code Capture Tool! Version 2.1.3 with comments, web-upload, back-save and snippets!
Nederlandse LabVIEW user groep www.lvug.nl
My LabVIEW Ideas
LabVIEW, programming like it should be!

Drag n drop stuff

Hi all.
I have this weird behavior regarding drag n drop stuff.
The scenario:
MC1 is on layer1.
MC2 is on layer2.
You drag MC1 and drop it on MC2.
Guess what? MC1 still stick to the mouse. MC1 still follow
the mouse eventhough you've release the mouse. Is this normal? What
should I do be able to drop it on any MC on the stage regardless of
their layer on the timeline?
Below is the code on the timeline (it's a normal,non-fancy
code really).
Thanks in advance guys.

Don't know if this will help, but this is one of the most
often overlooked movieclip/button events: onReleaseOutside.
If you release the mouse, but it is over some other
clip/button which also has defined clip events, the original item
will not know that you have released it because it has been
"release outside." This is one of the things I
always test in any flash file I am given and often you get the
"stuck to the mouse with no way to get it
unstuck" problem.
So just define an onReleaseOutside handler that does whatever
you would like to happen in that case and you should be good as
gold.

Air drag and drop

I've found various info regarding dragging and dropping into air applications. But what about dragging files out?
For example if i made a simple file browser, could i drag files into other programs, e.g illustrator?

Nevermind, you can't use DragManager at all in AIR it seems if you leave a window. You have to directly use the NativeDragManager.
Strange because it seems like the DragManager singleton manages that for you -- but it doesn't.

Visual Studio opening files when dragged and dropped in WPF app debugging session

I'm working on a WPF app (using VS2013 CE) which is intended to manage media files (TV Shows, movies, etc) and as part of this I am enabling the user to drag and drop media files on to the running app (by adding AllowDrop="True" and PreviewDragEnter="Window_PreviewDragEnter"
to my Window definition).
The problem I have is that when I drag files onto the app in a debugging session Visual Studio then opens the file(s) when I stop debugging... this is seriously annoying as when I am testing with large media files (> 1GB) it just locks up VS for minutes
at a time while it tries to open the file or files. When I run the app outside the debugger this does not happen - it's only when I'm in a VS debugging session. The only way I can stop this happening is to kill VS completely from Task Manager then restart
it - this is also very annoying but often I need to do this as it will freeze up for 5-10 minutes while it insists on loading the files in VS.
I understand the app, whilst debugging, is running in the context of VS but why does VS then have to try to open the files when debugging is finished? I have looked through the options but can't see anything to switch this off and no amount of searching
has turned up anything - can anyone put me out of my misery with a solution to this annoying issue?

Hello nzmike,
Does Visual Studio behaves like the following image shows and just hangs when opening your media file?
Do you have any other computer which installs Visual Studio? Can you reproduce this on it?
In order to troubleshoot this issue I think we need to locate the root reason of your issue. The problem can related to the following:
1. Your project is corrupt and VS then trys to load that file when debug finished.
2. Your VS is corrupt and caused this problem.
So please do something below:
1. Try clean and rebuild your project.
2. Switch to some other PCs and use VS and your project there, check if the problem can be reproduced.
3. You can backup your VS setting and try some commands: devenv /resetsettings and devenv /resetuserdata
Details about VS command:https://msdn.microsoft.com/en-us/library/xee0c8y7.aspx
And based on th research of the above second step, if you can reproduce this issue on more than one PC, the problem is pending on your project and I need you to share a simple sample which can reproduce this issue. We will need to investigate the project
in detail.
Best regards,
Barry
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How do i drag indicator control type on WPF instead of using Drag and Drop points

In my WPF application, i have a window which is docked with the screen. i want to automate to expand the window using an Indicator control type, by sliding it. As of now i use StartDrag and StopDrag using specific points, which is not correct when it runs
in many other screens.
Could you please let me know, is there way to slide the control (to set window display size to viewable) without using drag and drop action using points.

Hi Pavithra,
>> As of now i use StartDrag and StopDrag using specific points, which is not correct when it runs in many other screens.
To really understanding this issue, could you share us what you mean by ”which is not correct”? It would be much helpful if you could share us a screen shoot about your UI and your issue.
>> Could you please let me know, is there way to slide the control (to set window display size to viewable) without using drag and drop action using points
Do you mean that the control of the WPF is invisible and you want to set the window display size to make it visible? If so, I think you could use the Mouse.MoveScrollWheel Method to change the windows view until the control is visible. The link below might
be useful to you:
# CodedUI cann't find the controls outside the screen view, Mouse.MoveScrollWheel doesn't work too
https://social.msdn.microsoft.com/Forums/vstudio/en-US/e1dba9ee-dc51-4160-9a1a-a2220c903db0/codedui-cannt-find-the-controls-outside-the-screen-view-mousemovescrollwheel-doesnt-work-too?forum=vstest
If I misunderstood you, please feel free to let me know.
Best Regards,
Edward
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How can I drag and drop an item from one Tree control to another in LabVIEW 7.1?

You can use the mouse up and down event on the two tree controls but the problem is making the correct selection in the second tree control. I want to be able to switch over to the selection bar of the second tree control so that I can place my item in the correct position. I know all possible workarounds with double-clicks and so on... but I really want a windows drag and drop.
This is what I have for the moment. Please check the library below. I need to activate the selection bar of the second tree control somehow to get the position in the control. The VI below is written in LV 7.1
Attachments:
Drag&Drop.llb ‏65 KB

Hi Jones,
As far as I know this feature is currently not supported by the Tree control. A workaround, would be to use the vertical position of the mouse in the button up event to determine what line you�re dropping the item.
If you would like the Tree control to include the drag and drop feature, please submit this as a Product Suggestion under the feedback at www.ni.com/contact.
Good luck!
Best regards,
Philip C.
Applications Engineer
National Instruments
www.ni.com/ask
- Philip Courtois, Thinkbot Solutions

How to use drag n drop button in report display

hello friends
i'm displaying list report . i want one customer one time and with diff amounts .ok first of all i'm diplaying detail customer details , if i click on one customer i have to display that cust one time and i want to get details . just like drag and drop button how to use this in normal report .
please help me out .
thanks & regards.
lavanya

Hi,
Check this link..
http://www.sapdevelopment.co.uk/reporting/alv/alvtree/alvtree_basic.htm
And also Check these Examples..
BCALV_TREE_01
BCALV_TREE_02
BCALV_TREE_03
BCALV_TREE_04
BCALV_TREE_05
BCALV_TREE_06
BCALV_TREE_DEMO
BCALV_TREE_DND
BCALV_TREE_DND_MULTIPLE
BCALV_TREE_EVENT_RECEIVER
BCALV_TREE_EVENT_RECEIVER01
BCALV_TREE_ITEMLAYOUT
BCALV_TREE_MOVE_NODE_TEST
BCALV_TREE_SIMPLE_DEMO
BCALV_TREE_VERIFY

I recently uploaded some pics and videos from an ipad and a camera. I put them all on Iphoto and backed them up in my personal folder. I then trimmed one of the videos and dragged and dropped that into the master folder(pictures). Its now gone!! HELP!?!?!

I rencently added all my photo's from my Ipad and Camera. There were photos and videos on both. The import was done through Iphoto and then transfered to my backup in my pictures folder. I then took one of my videos and trimmed it and then addded that trimmed version to my back up(pictures)albumn. It asked If i wanted to replace existing photo or cancel and I hit replace. Now the file plays great on Iphoto but I am unable to share it through any form(facebook, Imessage etc) and in my back up(pictures) it says the file in only 87kb. I dragged and dropped it from Iphoto to the desk top along with another important video, when I hit get info on both of them one of them is a full sized video(50mb or whatever) and the other one(the one I am trying to recover) is only the 87kb. I want this full file avaiable to me how can I get it back?? it is already deleted off the camera??? please please help me.

Garret,
is your movie in your backup folder a Quicktime movie? Then probably only have the Quicktime wrapper in your backup folder, but not the referenced media in the file fork of the movie. If you see the full quality movie in iPhoto in QuickTime player, don't drag it from the browser to the Desktop, but use "File > Reveal in Finder > Original File" to show the movie in your iPhoto Library. Select the Movie when it is revealed and ctrl-click it to open it in Quicktime Player.
Export it from Quicktime Player with "Export to" and share it to iTunes. This way it will be converted to a .mp4 movie that embeds the missing resources.
You can drag the converted movie from iTunes to the Desktop or share it using to Media Browser to other applications.
Regards
Léonie

How to outline selected cells during drag and drop in the jtable

Hi,
I have spent a lot of time to find out how to outline selected cells during drag in the jtable, but I did not find the answer.
Can anybody give me a tip, where to read more about this problem or even better, give an example...
I have the following situation:
1.Table has 10 rows and 10 columns
2.setSelectionMode(ListSelectionModel.SINGLE_INTERVAL_SELECTION) and setCellSelectionEnabled(true)
3.user select 5 cells in 4th row (for example cell45,cell46,cell47,cell48 and cell49)
4.user starts dragging. During dragging an outline should be drawn. Outline should be a rectangular with width of 5 cells and height of one cell. Outline should move according to the mouse position.
5.rectangular disappears when dropped
Regards,
Primoz

In "createTransferable" you can create a drag image
which you can paint in "dragOver" and clear in "drop" method of DropTarget :
package dnd;
* DragDropJTableCellContents.java
import javax.swing.*;
import javax.swing.border.*;
import javax.swing.table.*;
import java.awt.*;
import java.awt.datatransfer.*;
import java.awt.dnd.*;
import java.awt.event.*;
import java.awt.image.BufferedImage;
import java.io.IOException;
public class DragDropJTableCellContents extends JFrame {
    public DragDropJTableCellContents() {
        setTitle("Drag and Drop JTable");
        setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
        getContentPane().add(createTable("JTable"), BorderLayout.CENTER);
        setSize(400, 300);
        setLocationRelativeTo(null);
    private JPanel createTable(String tableId) {
        DefaultTableModel model = new DefaultTableModel();
        for (int i = 0; i < 10; i++) {
            model.addColumn("Column "+i);
        for (int i = 0; i < 10; i++) {
            String[] rowData = new String[10];
            for (int j = 0; j < 10; j++) {
                rowData[j] = tableId + " " + i + j;
            model.addRow(rowData);
        JTable table = new JTable(model);
        table.getTableHeader().setReorderingAllowed(false);
        table.setSelectionMode(ListSelectionModel.SINGLE_INTERVAL_SELECTION);
        table.setCellSelectionEnabled(true);
        JScrollPane scrollPane = new JScrollPane(table);
        table.setDragEnabled(true);
        TableTransferHandler th = new TableTransferHandler();
        table.setTransferHandler(th);
        table.setDropTarget(new TableDropTarget(th));
        table.setAutoResizeMode(JTable.AUTO_RESIZE_OFF);
        JPanel panel = new JPanel(new BorderLayout());
        panel.add(scrollPane);
        panel.setBorder(BorderFactory.createTitledBorder(tableId));
        return panel;
    public static void main(String[] args) {
        new DragDropJTableCellContents().setVisible(true);
    abstract class StringTransferHandler extends TransferHandler {
        public int dropAction;
        protected abstract String exportString(JComponent c);
        protected abstract void importString(JComponent c, String str);
        @Override
        protected Transferable createTransferable(JComponent c) {
            return new StringSelection(exportString(c));
        @Override
        public int getSourceActions(JComponent c) {
            return COPY;
        @Override
        public boolean importData(JComponent c, Transferable t) {
            if (canImport(c, t.getTransferDataFlavors())) {
                try {
                    String str = (String) t.getTransferData(DataFlavor.stringFlavor);
                    importString(c, str);
                    return true;
                } catch (UnsupportedFlavorException ufe) {
                } catch (IOException ioe) {
            return false;
        @Override
        public boolean canImport(JComponent c, DataFlavor[] flavors) {
            for (int ndx = 0; ndx < flavors.length; ndx++) {
                if (DataFlavor.stringFlavor.equals(flavors[ndx])) {
                    return true;
            return false;
    class TableTransferHandler extends StringTransferHandler {
        private int dragRow;
        private int[] dragColumns;
        private BufferedImage[] image;
        private int row;
        private int[] columns;
        public JTable target;
        @Override
        protected Transferable createTransferable(JComponent c) {
            JTable table = (JTable) c;
            dragRow = table.getSelectedRow();
            dragColumns = table.getSelectedColumns();
            createDragImage(table);
            return new StringSelection(exportString(c));
        protected String exportString(JComponent c) {
            JTable table = (JTable) c;
            row = table.getSelectedRow();
            columns = table.getSelectedColumns();
            StringBuffer buff = new StringBuffer();
            for (int j = 0; j < columns.length; j++) {
                Object val = table.getValueAt(row, columns[j]);
                buff.append(val == null ? "" : val.toString());
                if (j != columns.length - 1) {
                    buff.append(",");
            return buff.toString();
        protected void importString(JComponent c, String str) {
            target = (JTable) c;
            DefaultTableModel model = (DefaultTableModel) target.getModel();
            String[] values = str.split("\n");
            int colCount = target.getSelectedColumn();
            int max = target.getColumnCount();
            for (int ndx = 0; ndx < values.length; ndx++) {
                String[] data = values[ndx].split(",");
                for (int i = 0; i < data.length; i++) {
                    String string = data;
if(colCount < max){
model.setValueAt(string, target.getSelectedRow(), colCount);
colCount++;
public BufferedImage[] getDragImage() {
return image;
private void createDragImage(JTable table) {
if (dragColumns != null) {
try {
image = new BufferedImage[dragColumns.length];
for (int i = 0; i < dragColumns.length; i++) {
Rectangle cellBounds = table.getCellRect(dragRow, i, true);
TableCellRenderer r = table.getCellRenderer(dragRow, i);
DefaultTableModel m = (DefaultTableModel) table.getModel();
JComponent lbl = (JComponent) r.getTableCellRendererComponent(table,
table.getValueAt(dragRow, dragColumns[i]), false, false, dragRow, i);
lbl.setBounds(cellBounds);
BufferedImage img = new BufferedImage(lbl.getWidth(), lbl.getHeight(),
BufferedImage.TYPE_INT_ARGB_PRE);
Graphics2D graphics = img.createGraphics();
graphics.setComposite(AlphaComposite.getInstance(AlphaComposite.SRC_OVER, 1f));
lbl.setBorder(BorderFactory.createLineBorder(Color.LIGHT_GRAY));
lbl.paint(graphics);
graphics.dispose();
image[i] = img;
} catch (RuntimeException re) {
class TableDropTarget extends DropTarget {
private Insets autoscrollInsets = new Insets(20, 20, 20, 20);
private Rectangle rect2D = new Rectangle();
private TableTransferHandler handler;
public TableDropTarget(TableTransferHandler h) {
super();
this.handler = h;
@Override
public void dragOver(DropTargetDragEvent dtde) {
handler.dropAction = dtde.getDropAction();
JTable table = (JTable) dtde.getDropTargetContext().getComponent();
Point location = dtde.getLocation();
int row = table.rowAtPoint(location);
int column = table.columnAtPoint(location);
table.changeSelection(row, column, false, false);
paintImage(table, location);
autoscroll(table, location);
super.dragOver(dtde);
public void dragExit(DropTargetDragEvent dtde) {
clearImage((JTable) dtde.getDropTargetContext().getComponent());
super.dragExit(dtde);
@Override
public void drop(DropTargetDropEvent dtde) {
Transferable data = dtde.getTransferable();
JTable table = (JTable) dtde.getDropTargetContext().getComponent();
clearImage(table);
handler.importData(table, data);
super.drop(dtde);
private final void paintImage(JTable table, Point location) {
Point pt = new Point(location);
BufferedImage[] image = handler.getDragImage();
if (image != null) {
table.paintImmediately(rect2D.getBounds());
rect2D.setLocation(pt.x - 15, pt.y - 15);
int wRect2D = 0;
int hRect2D = 0;
for (int i = 0; i < image.length; i++) {
table.getGraphics().drawImage(image[i], pt.x - 15, pt.y - 15, table);
pt.x += image[i].getWidth();
if (hRect2D < image[i].getHeight()) {
hRect2D = image[i].getHeight();
wRect2D += image[i].getWidth();
rect2D.setSize(wRect2D, hRect2D);
private final void clearImage(JTable table) {
table.paintImmediately(rect2D.getBounds());
private Insets getAutoscrollInsets() {
return autoscrollInsets;
private void autoscroll(JTable table, Point cursorLocation) {
Insets insets = getAutoscrollInsets();
Rectangle outer = table.getVisibleRect();
Rectangle inner = new Rectangle(outer.x + insets.left,
outer.y + insets.top,
outer.width - (insets.left + insets.right),
outer.height - (insets.top + insets.bottom));
if (!inner.contains(cursorLocation)) {
Rectangle scrollRect = new Rectangle(cursorLocation.x - insets.left,
cursorLocation.y - insets.top,
insets.left + insets.right,
insets.top + insets.bottom);
table.scrollRectToVisible(scrollRect);
Edited by: Andre_Uhres on Nov 18, 2007 10:03 PM

Can NOT drag and drop to combine Events

I've combined Events zillions of times in iPhoto and drag-'n-drop in Aperture 3 also. Today, when I tried to drag one Event into another, it didn't work. It didn't 'release' into the new event when I let go of the mouse button. I restarted iPhoto - same problem. Rebooted my MBP, same problem.
Tried to drag and drop a new photo into my Photostream (from Aperture this time) and the same problem. I click to drag, move the event, and then it appears 'ghosted' and will not release.
I even went into my Sys Prefs to see if it was my mouse, but that looked OK, and I could not replicate this problems in other applications.
I'd love to know why it does this (did I inadvertently check something somewhere) but more importantly, how do I fix this?
Oh yes - I got an error message the first few time about repairing iPhoto, which I let it do - took about 10 minutes, and I've never seen that before in iPhoto. (Aperture, yes, a LOT...)
Oh yes - I can 'Merge Events' from the Menu - that works, but seems cumbersome and the drag-and-drop has worked fine until today...
I am stumpped...
Thanks!
Greg

Option 1
Back Up and try rebuild the library: hold down the command and option (or alt) keys while launching iPhoto. Use the resulting dialogue to rebuild. Choose to Repair Database. If that doesn't help, then try again, this time using Rebuild Database.
If that fails:
Option 2
Download iPhoto Library Manager and use its rebuild function. (In Library Manager it's the FIle -> Rebuild command)
This will create an entirely new library. It will then copy (or try to) your photos and all the associated metadata and versions to this new Library, and arrange it as close as it can to what you had in the damaged Library. It does this based on information it finds in the iPhoto sharing mechanism - but that means that things not shared won't be there, so no slideshows, books or calendars, for instance - but it should get all your events, albums and keywords, faces and places back.
Because this process creates an entirely new library and leaves your old one untouched, it is non-destructive, and if you're not happy with the results you can simply return to your old one.
Regards
TD

Hi - I keep receiving the following error message on a song I purchased from itunes and am now trying to drag and drop to my iPad: "you must download items from icloud before you can copy then to iPad" what does this mean - please help! Thank you

Hi - I keep receiving the following error message on a song I purchased from itunes and am now trying to drag and drop to my iPad: "you must download items from icloud before you can copy then to iPad" what does this mean - please help! Thank you

Hi Poonam26c,
If you do not have a local copy of a song which you have purchased (i.e. it is available via iTunes in the Cloud), you may need to redownload it before you can transfer it to your device. You may find the following article helpful:
Apple Support: Downloading past purchases from the iTunes Store, App Store, and iBooks Store
http://support.apple.com/kb/HT2519
Regards,
- Brenden

Regarding Drag N Drop

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