Drag and Drop

From DicomObjectsWiki

Using Drag and Drop from DicomViewer COM object, to another application, in .NET enviroment.

In order to enable drag and drop from a DicomViewer COM object, in .NET enviroment, Follow the following steps:

In the definition part of the dicom viewer (in the form "InitializeComponent" section), add the following line:

this.axDicomViewer1.MouseDownEvent += new AxDicomObjects.IDicomViewerEvents_MouseDownEventHandler(this.axDicomViewer1_MouseDown);

Then implement axDicomViewer1_MouseDown:

private void axDicomViewer1_MouseDown(object sender, IDicomViewerEvents_MouseDownEvent e)
{
   if (((e.button& 1) != 0)) //left button clicked
   {
      Array arr = (Array)image.WriteArray(true,null,"100");  //convert the image to an array
      byte [] ba = new byte[arr.LongLength];
      arr.CopyTo(ba,0);
      axDicomViewer1.DoDragDrop(ba, DragDropEffects.Copy);   //send the array as the drag/drop object
   }
}

Then, in the target application, in your drop target control, do:

this.TARGET_CONTROL.DragDrop += new System.Windows.Forms.DragEventHandler(dragdrop);

And implement the dragdrop method.

private void dragdrop(Object sender, DragEventArgs e)
{
   try
   {
       DicomImage di;
       IDataObject io = ((IDataObject)(e.Data));
       DicomImages images = new DicomImages();
       byte [] ba = (byte[]) io.GetData("System.Byte[]");
       di = (DicomImage) images.ReadArray(ba);
       if (di!=null)
       {
         //your DicomImage is now imported. you can now use it.
       }
   }
   catch
   {
      //Handle expeptions here, usually when you drag something irrelevant to this code to your control.
   }
}

That should be it!

Ze'ev Russak:

Orthocrat ltd.