Introduction - If you have any usage issues, please Google them yourself
Establish a magnetic form, to achieve a form of paste: Paste realize the difficulty that when this operation, assuming that there are two forms Form1 and Form2, Form2 move closer to Form1, Form2 and paste when the closest distance is less than the distance Form1 together. Obviously, it should be judged in the process of moving Form2, the problem is to insert the code to determine at what point in the program