private void OnSourceGalleryMouseMove(object sender, MouseEventArgs e)
{
if (e.Button != MouseButtons.Left || Control.ModifierKeys != Keys.None || dragItemHitInfo == null)
{
return;
}
Size dragSize = SystemInformation.DragSize;
Rectangle dragRect = new Rectangle(dragItemHitInfo.HitPoint.X - dragSize.Width / 2, dragItemHitInfo.HitPoint.Y - dragSize.Height / 2, dragSize.Width, dragSize.Height);
if (!(dragRect.Contains(e.Location)))
{
sourceGallery.DoDragDrop(dragItemHitInfo.GalleryItem, DragDropEffects.Copy);
}
}
private void OnGalleryControlMouseMove(object sender, MouseEventArgs e)
{
if (e.Button != MouseButtons.Left || Control.ModifierKeys != Keys.None || DragItemHitInfo == null)
{
return;
}
GalleryControl gallery = (GalleryControl)sender;
List <GalleryItem> checkedItems = gallery.Gallery.GetCheckedItems();
if (checkedItems.Count == 0)
{
checkedItems.Add(DragItemHitInfo.GalleryItem);
}
if (!new Rectangle(DragItemHitInfo.HitPoint.X - SystemInformation.DragSize.Width / 2,
DragItemHitInfo.HitPoint.Y - SystemInformation.DragSize.Height / 2,
SystemInformation.DragSize.Width, SystemInformation.DragSize.Height)
.Contains(e.Location))
{
gallery.DoDragDrop(checkedItems, DragDropEffects.All);
}
}