Its not that hard:
using System;
using System.Collections.Generic;
using System.Data;
using System.Drawing;
using System.Linq;
using System.Text;
using System.Windows.Forms;
using System.Runtime.InteropServices;
using System;
using System.Runtime.InteropServices;
public class MainWindow : Form
{
static Bitmap backbuffer;
const int windowWidth = 640;
const int windowHeight = 480;
static int a = 5;
public MainWindow()
{
this.ClientSize = new Size( windowWidth, windowHeight );
// The OptimizedDoubleBuffer style has no effect due to the way
// we control this game (drawing would have to be in OnPaint for
// it to benefit us at all.)
this.SetStyle( ControlStyles.AllPaintingInWmPaint | ControlStyles.UserPaint | ControlStyles.OptimizedDoubleBuffer | ControlStyles.Opaque, true );
// Create the backbuffer
backbuffer = new Bitmap( windowWidth, windowHeight );
}
public void Render()
{
Graphics g = Graphics.FromImage( backbuffer );
// clear the background. normally if you weren't using a
// backbuffer, this would cause severe flicker.
g.Clear( Color.White );
// just draw something. a line that moves
a++;
g.DrawLine( new Pen( Color.Blue, 5 ), new Point( 5, 5 ), new Point( a, 500 ) );
// Flip the backbuffer
Graphics gFrontBuffer = Graphics.FromHwnd( this.Handle );
gFrontBuffer.DrawImage( backbuffer, new Point( 0, 0 ) );
}
// We're not painting in OnPaint().
/* protected override void OnPaint( PaintEventArgs e ) { } */
static void Main()
{
// why not to use while(Created){FullRender();Application.DoEvents();}
//http://blogs.msdn.com/tmiller/archive/2003/11/07/57524.aspx
// Also here are records of people burned by it (scroll to bottom)
//http://msdn.microsoft.com/en-us/library/system.windows.forms.application.doevents.aspx
// alternative approaches to DoEvents loop
//http://blogs.msdn.com/tmiller/archive/2003/11/24/57532.aspx
// Using traditional PeekMessage() loop
// Create-up a window.
MainWindow mw = new MainWindow();
mw.Show();
// (style init stuff is in its constructor)
Win32.NativeMessage msg = new Win32.NativeMessage();
while( true )
{
if( !mw.Created )
{
// Need this here for the application to shutdown gracefully.
break;
}
if( Win32.PeekMessage( out msg, mw.Handle, 0, 0, (uint)Win32.PM.REMOVE ) )
{
if( msg.message == (uint)Win32.WindowsMessage.WM_QUIT )
{
Console.WriteLine( "QUITTING..." );
break;
}
else
{
Win32.TranslateMessage( ref msg );
Win32.DispatchMessage( ref msg );
}
}
else
{
// Run the game simulation
// Render current state
mw.Render();
System.Threading.Thread.Sleep( 2 );
}
}
Application.Exit();
}
}
public static class Win32
{
// From http://www.pinvoke.net/default.aspx/user32/PeekMessage.html
[StructLayout( LayoutKind.Sequential )]
public struct NativeMessage
{
public IntPtr hwnd;
public uint message;
public IntPtr wParam;
public IntPtr lParam;
public uint time;
public System.Drawing.Point point;
}
[DllImport( "user32.dll" )]
[return: MarshalAs( UnmanagedType.Bool )]
public static extern bool PeekMessage( out NativeMessage lpMsg, IntPtr hwnd, uint wMsgFilterMin, uint wMsgFilterMax, uint wRemoveMsg );
public enum PM : uint
{
NOREMOVE = 0,
REMOVE = 1
}
[DllImport( "user32.dll" )]
public static extern bool TranslateMessage( [In] ref NativeMessage lpMsg );
[DllImport( "user32.dll" )]
public static extern IntPtr DispatchMessage( [In] ref NativeMessage lpmsg );
#region all the sys metrics and WM_ windows message defs
// from winuser.h
/*
* GetSystemMetrics() codes
*/
public enum SystemMetrics : uint
{
SM_CXSCREEN = 0,
SM_CYSCREEN = 1,
SM_CXVSCROLL = 2,
SM_CYHSCROLL = 3,
SM_CYCAPTION = 4,
SM_CXBORDER = 5,
SM_CYBORDER = 6,
SM_CXDLGFRAME = 7,
SM_CXFIXEDFRAME = 7,/* ;win40 name change */
SM_CYDLGFRAME = 8,
SM_CYFIXEDFRAME = 8,/* ;win40 name change */
SM_CYVTHUMB = 9,
SM_CXHTHUMB = 10,
SM_CXICON = 11,
SM_CYICON = 12,
SM_CXCURSOR = 13,
SM_CYCURSOR = 14,
SM_CYMENU = 15,
SM_CXFULLSCREEN = 16,
SM_CYFULLSCREEN = 17,
SM_CYKANJIWINDOW = 18,
SM_MOUSEPRESENT = 19,
SM_CYVSCROLL = 20,
SM_CXHSCROLL = 21,
SM_DEBUG = 22,
SM_SWAPBUTTON = 23,
SM_RESERVED1 = 24,
SM_RESERVED2 = 25,
SM_RESERVED3 = 26,
SM_RESERVED4 = 27,
SM_CXMIN = 28,
SM_CYMIN = 29,
SM_CXSIZE = 30,
SM_CYSIZE = 31,
SM_CXFRAME = 32,
SM_CXSIZEFRAME = 32, /* ;win40 name change */
SM_CYFRAME = 33,
SM_CYSIZEFRAME = 33,/* ;win40 name change */
SM_CXMINTRACK = 34,
SM_CYMINTRACK = 35,
SM_CXDOUBLECLK = 36,
SM_CYDOUBLECLK = 37,
SM_CXICONSPACING = 38,
SM_CYICONSPACING = 39,
SM_MENUDROPALIGNMENT = 40,
SM_PENWINDOWS = 41,
SM_DBCSENABLED = 42,
SM_CMOUSEBUTTONS = 43,
SM_SECURE = 44,
SM_CXEDGE = 45,
SM_CYEDGE = 46,
SM_CXMINSPACING = 47,
SM_CYMINSPACING = 48,
SM_CXSMICON = 49,
SM_CYSMICON = 50,
SM_CYSMCAPTION = 51,
SM_CXSMSIZE = 52,
SM_CYSMSIZE = 53,
SM_CXMENUSIZE = 54,
SM_CYMENUSIZE = 55,
SM_ARRANGE = 56,
SM_CXMINIMIZED = 57,
SM_CYMINIMIZED = 58,
SM_CXMAXTRACK = 59,
SM_CYMAXTRACK = 60,
SM_CXMAXIMIZED = 61,
SM_CYMAXIMIZED = 62,
SM_NETWORK = 63,
SM_CLEANBOOT = 67,
SM_CXDRAG = 68,
SM_CYDRAG = 69,
SM_SHOWSOUNDS = 70,
SM_CXMENUCHECK = 71, /* Use instead of GetMenuCheckMarkDimensions()! */
SM_CYMENUCHECK = 72,
SM_SLOWMACHINE = 73,
SM_MIDEASTENABLED = 74,
SM_MOUSEWHEELPRESENT = 75,
SM_XVIRTUALSCREEN = 76,
SM_YVIRTUALSCREEN = 77,
SM_CXVIRTUALSCREEN = 78,
SM_CYVIRTUALSCREEN = 79,
SM_CMONITORS = 80,
SM_SAMEDISPLAYFORMAT = 81,
SM_IMMENABLED = 82,
SM_CXFOCUSBORDER = 83,
SM_CYFOCUSBORDER = 84,
SM_TABLETPC = 86,
SM_MEDIACENTER = 87,
SM_STARTER = 88,
SM_SERVERR2 = 89,
SM_CMETRICS = 90,
SM_REMOTESESSION = 0x1000,
SM_SHUTTINGDOWN = 0x2000,
SM_REMOTECONTROL = 0x2001,
SM_CARETBLINKINGENABLED = 0x2002
}
public enum WindowsMessage : uint
{
/*
* Window Messages
*/
WM_NULL = 0x0000,
WM_CREATE = 0x0001,
WM_DESTROY = 0x0002,
WM_MOVE = 0x0003,
WM_SIZE = 0x0005,
WM_ACTIVATE = 0x0006,
WM_SETFOCUS = 0x0007,
WM_KILLFOCUS = 0x0008,
WM_ENABLE = 0x000A,
WM_SETREDRAW = 0x000B,
WM_SETTEXT = 0x000C,
WM_GETTEXT = 0x000D,
WM_GETTEXTLENGTH = 0x000E,
WM_PAINT = 0x000F,
WM_CLOSE = 0x0010,
//#ifndef _WIN32_WCE
WM_QUERYENDSESSION = 0x0011,
WM_QUERYOPEN = 0x0013,
WM_ENDSESSION = 0x0016,
//#endif
WM_QUIT = 0x0012,
WM_ERASEBKGND = 0x0014,
WM_SYSCOLORCHANGE = 0x0015,
WM_SHOWWINDOW = 0x0018,
WM_WININICHANGE = 0x001A,
WM_DEVMODECHANGE = 0x001B,
WM_ACTIVATEAPP = 0x001C,
WM_FONTCHANGE = 0x001D,
WM_TIMECHANGE = 0x001E,
WM_CANCELMODE = 0x001F,
WM_SETCURSOR = 0x0020,
WM_MOUSEACTIVATE = 0x0021,
WM_CHILDACTIVATE = 0x0022,
WM_QUEUESYNC = 0x0023,
WM_GETMINMAXINFO = 0x0024,
WM_PAINTICON = 0x0026,
WM_ICONERASEBKGND = 0x0027,
WM_NEXTDLGCTL = 0x0028,
WM_SPOOLERSTATUS = 0x002A,
WM_DRAWITEM = 0x002B,
WM_MEASUREITEM = 0x002C,
WM_DELETEITEM = 0x002D,
WM_VKEYTOITEM = 0x002E,
WM_CHARTOITEM = 0x002F,
WM_SETFONT = 0x0030,
WM_GETFONT = 0x0031,
WM_SETHOTKEY = 0x0032,
WM_GETHOTKEY = 0x0033,
WM_QUERYDRAGICON = 0x0037,
WM_COMPAREITEM = 0x0039,
WM_COMPACTING = 0x0041,
WM_COMMNOTIFY = 0x0044, /* no longer suported */
WM_WINDOWPOSCHANGING = 0x0046,
WM_WINDOWPOSCHANGED = 0x0047,
WM_POWER = 0x0048,
/*
* wParam for WM_POWER window message and DRV_POWER driver notification
#define PWR_OK 1
#define PWR_FAIL (-1)
#define PWR_SUSPENDREQUEST 1
#define PWR_SUSPENDRESUME 2
#define PWR_CRITICALRESUME 3
*/
WM_COPYDATA = 0x004A,
WM_CANCELJOURNAL = 0x004B,
/*
* lParam of WM_COPYDATA message points to...
typedef struct tagCOPYDATASTRUCT {
ULONG_PTR dwData;
DWORD cbData;
PVOID lpData;
} COPYDATASTRUCT, *PCOPYDATASTRUCT;
*/
//#if(WINVER >= 0x0400)
WM_NOTIFY = 0x004E,
WM_INPUTLANGCHANGEREQUEST = 0x0050,
WM_INPUTLANGCHANGE = 0x0051,
WM_TCARD = 0x0052,
WM_HELP = 0x0053,
WM_USERCHANGED = 0x0054,
WM_NOTIFYFORMAT = 0x0055,
WM_CONTEXTMENU = 0x007B,
WM_STYLECHANGING = 0x007C,
WM_STYLECHANGED = 0x007D,
WM_DISPLAYCHANGE = 0x007E,
WM_GETICON = 0x007F,
WM_SETICON = 0x0080,
//#endif /* WINVER >= 0x0400 */
WM_NCCREATE = 0x0081,
WM_NCDESTROY = 0x0082,
WM_NCCALCSIZE = 0x0083,
WM_NCHITTEST = 0x0084,
WM_NCPAINT = 0x0085,
WM_NCACTIVATE = 0x0086,
WM_GETDLGCODE = 0x0087,
//#ifndef _WIN32_WCE
WM_SYNCPAINT = 0x0088,
//#endif
WM_NCMOUSEMOVE = 0x00A0,
WM_NCLBUTTONDOWN = 0x00A1,
WM_NCLBUTTONUP = 0x00A2,
WM_NCLBUTTONDBLCLK = 0x00A3,
WM_NCRBUTTONDOWN = 0x00A4,
WM_NCRBUTTONUP = 0x00A5,
WM_NCRBUTTONDBLCLK = 0x00A6,
WM_NCMBUTTONDOWN = 0x00A7,
WM_NCMBUTTONUP = 0x00A8,
WM_NCMBUTTONDBLCLK = 0x00A9,
//#if(_WIN32_WINNT >= 0x0500)
WM_NCXBUTTONDOWN = 0x00AB,
WM_NCXBUTTONUP = 0x00AC,
WM_NCXBUTTONDBLCLK = 0x00AD,
//#endif /* _WIN32_WINNT >= 0x0500 */
//#if(_WIN32_WINNT >= 0x0501)
WM_INPUT = 0x00FF,
//#endif /* _WIN32_WINNT >= 0x0501 */
WM_KEYFIRST = 0x0100,
WM_KEYDOWN = 0x0100,
WM_KEYUP = 0x0101,
WM_CHAR = 0x0102,
WM_DEADCHAR = 0x0103,
WM_SYSKEYDOWN = 0x0104,
WM_SYSKEYUP = 0x0105,
WM_SYSCHAR = 0x0106,
WM_SYSDEADCHAR = 0x0107,
//#if(_WIN32_WINNT >= 0x0501)
WM_UNICHAR = 0x0109,
WM_KEYLAST = 0x0109,
//#define UNICODE_NOCHAR 0xFFFF
//#if(WINVER >= 0x0400)
WM_IME_STARTCOMPOSITION = 0x010D,
WM_IME_ENDCOMPOSITION = 0x010E,
WM_IME_COMPOSITION = 0x010F,
WM_IME_KEYLAST = 0x010F,
//#endif /* WINVER >= 0x0400 */
WM_INITDIALOG = 0x0110,
WM_COMMAND = 0x0111,
WM_SYSCOMMAND = 0x0112,
WM_TIMER = 0x0113,
WM_HSCROLL = 0x0114,
WM_VSCROLL = 0x0115,
WM_INITMENU = 0x0116,
WM_INITMENUPOPUP = 0x0117,
WM_MENUSELECT = 0x011F,
WM_MENUCHAR = 0x0120,
WM_ENTERIDLE = 0x0121,
//#if(WINVER >= 0x0500)
//#ifndef _WIN32_WCE
WM_MENURBUTTONUP = 0x0122,
WM_MENUDRAG = 0x0123,
WM_MENUGETOBJECT = 0x0124,
WM_UNINITMENUPOPUP = 0x0125,
WM_MENUCOMMAND = 0x0126,
//#ifndef _WIN32_WCE
//#if(_WIN32_WINNT >= 0x0500)
WM_CHANGEUISTATE = 0x0127,
WM_UPDATEUISTATE = 0x0128,
WM_QUERYUISTATE = 0x0129,
WM_CTLCOLORMSGBOX = 0x0132,
WM_CTLCOLOREDIT = 0x0133,
WM_CTLCOLORLISTBOX = 0x0134,
WM_CTLCOLORBTN = 0x0135,
WM_CTLCOLORDLG = 0x0136,
WM_CTLCOLORSCROLLBAR = 0x0137,
WM_CTLCOLORSTATIC = 0x0138,
//#define MN_GETHMENU 0x01E1
WM_MOUSEFIRST = 0x0200,
WM_MOUSEMOVE = 0x0200,
WM_LBUTTONDOWN = 0x0201,
WM_LBUTTONUP = 0x0202,
WM_LBUTTONDBLCLK = 0x0203,
WM_RBUTTONDOWN = 0x0204,
WM_RBUTTONUP = 0x0205,
WM_RBUTTONDBLCLK = 0x0206,
WM_MBUTTONDOWN = 0x0207,
WM_MBUTTONUP = 0x0208,
WM_MBUTTONDBLCLK = 0x0209,
//#if (_WIN32_WINNT >= 0x0400) || (_WIN32_WINDOWS > 0x0400)
WM_MOUSEWHEEL = 0x020A,
//#endif
//#if (_WIN32_WINNT >= 0x0500)
WM_XBUTTONDOWN = 0x020B,
WM_XBUTTONUP = 0x020C,
WM_XBUTTONDBLCLK = 0x020D,
//#endif
//#if (_WIN32_WINNT >= 0x0500)
WM_MOUSELAST = 0x020D,
//#if(_WIN32_WINNT >= 0x0400)
/* Value for rolling one detent */
//#define WHEEL_DELTA 120
//#define GET_WHEEL_DELTA_WPARAM(wParam) ((short)HIWORD(wParam))
/* Setting to scroll one page for SPI_GET/SETWHEELSCROLLLINES */
//#define WHEEL_PAGESCROLL (UINT_MAX)
//#endif /* _WIN32_WINNT >= 0x0400 */
WM_PARENTNOTIFY = 0x0210,
WM_ENTERMENULOOP = 0x0211,
WM_EXITMENULOOP = 0x0212,
//#if(WINVER >= 0x0400)
WM_NEXTMENU = 0x0213,
WM_SIZING = 0x0214,
WM_CAPTURECHANGED = 0x0215,
WM_MOVING = 0x0216,
//#endif /* WINVER >= 0x0400 */
//#if(WINVER >= 0x0400)
WM_POWERBROADCAST = 0x0218,
/*
#ifndef _WIN32_WCE
#define PBT_APMQUERYSUSPEND 0x0000
#define PBT_APMQUERYSTANDBY 0x0001
#define PBT_APMQUERYSUSPENDFAILED 0x0002
#define PBT_APMQUERYSTANDBYFAILED 0x0003
#define PBT_APMSUSPEND 0x0004
#define PBT_APMSTANDBY 0x0005
#define PBT_APMRESUMECRITICAL 0x0006
#define PBT_APMRESUMESUSPEND 0x0007
#define PBT_APMRESUMESTANDBY 0x0008
#define PBTF_APMRESUMEFROMFAILURE 0x00000001
#define PBT_APMBATTERYLOW 0x0009
#define PBT_APMPOWERSTATUSCHANGE 0x000A
#define PBT_APMOEMEVENT 0x000B
#define PBT_APMRESUMEAUTOMATIC 0x0012
#endif
*/
//#endif /* WINVER >= 0x0400 */
//#if(WINVER >= 0x0400)
WM_DEVICECHANGE = 0x0219,
//#endif /* WINVER >= 0x0400 */
WM_MDICREATE = 0x0220,
WM_MDIDESTROY = 0x0221,
WM_MDIACTIVATE = 0x0222,
WM_MDIRESTORE = 0x0223,
WM_MDINEXT = 0x0224,
WM_MDIMAXIMIZE = 0x0225,
WM_MDITILE = 0x0226,
WM_MDICASCADE = 0x0227,
WM_MDIICONARRANGE = 0x0228,
WM_MDIGETACTIVE = 0x0229,
WM_MDISETMENU = 0x0230,
WM_ENTERSIZEMOVE = 0x0231,
WM_EXITSIZEMOVE = 0x0232,
WM_DROPFILES = 0x0233,
WM_MDIREFRESHMENU = 0x0234,
//#if(WINVER >= 0x0400)
WM_IME_SETCONTEXT = 0x0281,
WM_IME_NOTIFY = 0x0282,
WM_IME_CONTROL = 0x0283,
WM_IME_COMPOSITIONFULL = 0x0284,
WM_IME_SELECT = 0x0285,
WM_IME_CHAR = 0x0286,
//#endif /* WINVER >= 0x0400 */
//#if(WINVER >= 0x0500)
WM_IME_REQUEST = 0x0288,
//#endif /* WINVER >= 0x0500 */
//#if(WINVER >= 0x0400)
WM_IME_KEYDOWN = 0x0290,
WM_IME_KEYUP = 0x0291,
//#endif /* WINVER >= 0x0400 */
//#if((_WIN32_WINNT >= 0x0400) || (WINVER >= 0x0500))
WM_MOUSEHOVER = 0x02A1,
WM_MOUSELEAVE = 0x02A3,
//#endif
//#if(WINVER >= 0x0500)
WM_NCMOUSEHOVER = 0x02A0,
WM_NCMOUSELEAVE = 0x02A2,
//#endif /* WINVER >= 0x0500 */
//#if(_WIN32_WINNT >= 0x0501)
WM_WTSSESSION_CHANGE = 0x02B1,
WM_TABLET_FIRST = 0x02c0,
WM_TABLET_LAST = 0x02df,
//#endif /* _WIN32_WINNT >= 0x0501 */
WM_CUT = 0x0300,
WM_COPY = 0x0301,
WM_PASTE = 0x0302,
WM_CLEAR = 0x0303,
WM_UNDO = 0x0304,
WM_RENDERFORMAT = 0x0305,
WM_RENDERALLFORMATS = 0x0306,
WM_DESTROYCLIPBOARD = 0x0307,
WM_DRAWCLIPBOARD = 0x0308,
WM_PAINTCLIPBOARD = 0x0309,
WM_VSCROLLCLIPBOARD = 0x030A,
WM_SIZECLIPBOARD = 0x030B,
WM_ASKCBFORMATNAME = 0x030C,
WM_CHANGECBCHAIN = 0x030D,
WM_HSCROLLCLIPBOARD = 0x030E,
WM_QUERYNEWPALETTE = 0x030F,
WM_PALETTEISCHANGING = 0x0310,
WM_PALETTECHANGED = 0x0311,
WM_HOTKEY = 0x0312,
//#if(WINVER >= 0x0400)
WM_PRINT = 0x0317,
WM_PRINTCLIENT = 0x0318,
//#endif /* WINVER >= 0x0400 */
//#if(_WIN32_WINNT >= 0x0500)
WM_APPCOMMAND = 0x0319,
//#endif /* _WIN32_WINNT >= 0x0500 */
//#if(_WIN32_WINNT >= 0x0501)
WM_THEMECHANGED = 0x031A,
//#endif /* _WIN32_WINNT >= 0x0501 */
//#if(WINVER >= 0x0400)
WM_HANDHELDFIRST = 0x0358,
WM_HANDHELDLAST = 0x035F,
WM_AFXFIRST = 0x0360,
WM_AFXLAST = 0x037F,
//#endif /* WINVER >= 0x0400 */
WM_PENWINFIRST = 0x0380,
WM_PENWINLAST = 0x038F,
//#if(WINVER >= 0x0400)
WM_APP = 0x8000,
//#endif /* WINVER >= 0x0400 */
/*
* NOTE: All Message Numbers below 0x0400 are RESERVED.
*
* Private Window Messages Start Here:
*/
WM_USER = 0x0400
}
#endregion
}
