// When this DragPictureBox is clicked
public void MouseClicked(object sender, MouseEventArgs e)
{
Parent = Parent.Parent.Parent.Parent.Parent; // Gets and stores the Form this DragPictureBox is contained by
Enabled = false; // Disables this component so that it can be placed when dragging has completed
followMouse.Start(); // Start the followMouse timer to ensure that this DragPictureBox follows the mouse during dragging
BringToFront(); // Bring this DragPictureBox to the front of the form
activeDropGrid = ((GameForm)Parent).getDropGrid(); // Set the activeDropGrid by extracting this value from the parent form
activeDropGrid.activeDragPB = this; // Update the active PictureBox of the extracted DropGrid to be this DragPictureBox
UpdateSnappingRegion(activeDropGrid); // Update the snapping region stored by this DragPictureBox to the one defined by the extracted DropGrid
DoDragDrop(Image, DragDropEffects.Copy); // Start a DragDrop operation
}
// Used to update the snapping region held by this DragPictureBox
public void UpdateSnappingRegion(DropGrid dropGrid)
{
currentSnapRegion = new SnappingRegion(dropGrid.GetSnappingRegion()); // Update the snapping region to the current state of the supplied DropGrid's snapping region
currentSnapRegion.snapMode = (int)SnapMode; // Update the snap mode of our snapping region to the SnapMode of this DragPictureBox
currentSnapRegion.AddImageOffsets(this); // Add the image offsets to our snapping region using this DragPictureBox
}