protected override void OnMouseMove(MouseEventArgs e)
{
base.OnMouseMove(e);
if (e.LeftButton != MouseButtonState.Pressed)
{
this.dragStartPoint = null;
}
if (this.dragStartPoint.HasValue)
{
Point position = e.GetPosition(this);
if ((SystemParameters.MinimumHorizontalDragDistance <=
Math.Abs((double)(position.X - this.dragStartPoint.Value.X))) ||
(SystemParameters.MinimumVerticalDragDistance <=
Math.Abs((double)(position.Y - this.dragStartPoint.Value.Y))))
{
Image contentImg = this.Content as Image;
BitmapImage contentBitmapImg = contentImg.Source as BitmapImage;
DataObject dataObject = new DataObject("GRID_ITEM", contentImg);
dataObject.SetData("CLASS_ID", this.ClassId);
if (dataObject != null)
{
#if DEBUG
Console.WriteLine("ToolboxItem.OnMouseMove: GridItem sollte erstellt werden: " + dataObject.ToString());
Console.WriteLine("ToolboxItem.OnMouseMove: TBI.ClassID: " + this.ClassId.ToString());
Console.WriteLine("ToolboxItem.OnMouseMove: BitmapImage " + contentBitmapImg.ToString());
#endif
DragDrop.DoDragDrop(this, dataObject, DragDropEffects.Copy);
}
}
e.Handled = true;
}
}