A fast game loop in C # game development

The implementation of a fast game loop in C # game development. Refer to the book "Mastering C # Game Programming".

usingSystem;usingSystem.Collections.Generic;usingSystem.Linq;usingSystem.Text;usingSystem.Windows.Forms;usingSystem.Runtime.InteropServices;namespacegameloop{[StructLayout (layoutkind.sequential)] Public structMessage { PublicIntPtr hWnd;  PublicInt32 msg;  PublicIntPtr WParam;  PublicIntPtr LParam;  Public UINTTime ;  PublicSystem.Drawing.Point p; }     Public classFastLoop {[System.Security.SuppressUnmanagedCodeSecurity] [DllImport ("User32.dll", CharSet =CharSet.Auto)] Public Static extern BOOLPeekMessage ( outMessage msg, IntPtr hWnd,UINTMessagefiltermin,UINTMessagefiltermax,UINTflags); Precisetimer _timer=NewPrecisetimer ();  Public Delegate voidLoopcallback ();        Loopcallback _callback;  PublicFastLoop (Loopcallback callback) {_callback=callback; Application.idle+=NewEventHandler (Onapplicationenteridle); }        voidOnapplicationenteridle (Objectsender, EventArgs e) {             while(Isappstillidle ()) {_callback (); }        }        Private BOOLIsappstillidle () {Message msg; return! PeekMessage ( outMSG, IntPtr.Zero,0,0,0); }    }}

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A fast game loop in C # game development