It is in a form that the "mobile", can change the "size" state

https://www.cnblogs.com/gaodu2003/archive/2009/06/07/1497886.html

Add two buttons in the menu, the menu system for implementing the "size" and "Move" function.

The SendMessage (Form1.Handle, the WM_SYSCOMMAND, SC_SIZE, 0);
// may change in size so that the state of the form

The SendMessage (Form1.Handle, the WM_SYSCOMMAND, SC_MOVE, 0);
// make the position of a movable state in the form

Add two buttons in the menu, the menu system for implementing the "size" and "Move" function.

The SendMessage (Form1.Handle, the WM_SYSCOMMAND, SC_SIZE, 0);
// may change in size so that the state of the form

The SendMessage (Form1.Handle, the WM_SYSCOMMAND, SC_MOVE, 0);
// make the position of a movable state in the form