pinvoke.net: Edit: coredll.ExtEscape

@msdn=http://search.microsoft.com/search/results.aspx?qu=$$$
@pinvoke=http://pinvoke.net/$$$.htm

Summary: The '''ExtEscape''' function enables applications to access capabilities of a particular device that are not available through GDI.

!!!!C# Signature:
 [DllImport("coredll.dll", SetLastError=true)]
 static extern int ExtEscape(
		IntPtr hdc, 
		uint nEscape, 
		uint cbInput, 
		byte[] lpszInData,
		int cbOutput, 
		IntPtr lpszOutData
);
!!!!VB Signature:
 Declare Function ExtEscapeSet Lib "coredll" Alias "ExtEscape" (ByVal hdc As IntPtr, _
                                              ByVal nEscape As Int32, _
                                              ByVal cbInput As Int32, _
                                              ByVal plszInData As Byte(), _
                                              ByVal cbOutput As Int32, _
                                              ByVal lpszOutData As IntPtr) As Int32
!!!!User-Defined Types:
public class DefinedConsts
{
	// GDI Escapes for ExtEscape()
	private const uint QUERYESCSUPPORT   = 8;

// The following are unique to CE
	private const uint GETVFRAMEPHYSICAL =  6144;
	private const uint GETVFRAMELEN   = 6145;
	private const uint DBGDRIVERSTAT   = 6146;
	private const uint SETPOWERMANAGEMENT =  6147;
	private const uint GETPOWERMANAGEMENT =  6148;
}

public enum VideoPowerState : uint
{
	VideoPowerOn = 1,
	VideoPowerStandBy,
	VideoPowerSuspend,
	VideoPowerOff
}

!!!!Notes:
'''Turn Off the Display While Running Applications'''
Applications like the Microsoft® Windows Media™ Player for Pocket PC allow the user to turn off the display while the application is running in the background. This article shows you how to do this with your own applications.

Applies to:
Microsoft® Windows® Powered Pocket PC 2000
Microsoft eMbedded Visual Tools
Microsoft eMbedded Visual C++®

Languages Supported
All languages.

http://msdn.microsoft.com/library/default.asp?url=/library/en-us/dnppc2k/html/ppc_layoff.asp

!!!!Tips & Tricks:
Please add some!

!!!!Sample Code:
public class CFVideo
{
	public static void PowerOff()
	{
		IntPtr hdc = GetDC(IntPtr.Zero);
		uint func = SETPOWERMANAGEMENT;

uint size = 12;
		byte[] vpm = new byte[size];
				
		//structure size
		BitConverter.GetBytes(size).CopyTo(vpm, 0);
		//dpms version
		BitConverter.GetBytes(0x0001).CopyTo(vpm, 4);
		//power state
		BitConverter.GetBytes((uint)VideoPowerState.VideoPowerOff).CopyTo(vpm, 8);

ExtEscapeSet(hdc, SETPOWERMANAGEMENT, size, vpm, 0, IntPtr.Zero);
	}

[DllImport("coredll", EntryPoint="ExtEscape")]
	private static extern int ExtEscapeSet( 
		IntPtr hdc, 
		uint nEscape, 
		uint cbInput, 
		byte[] lpszInData,
		int cbOutput, 
		IntPtr lpszOutData
		);

[DllImport("coredll")]
	private static extern IntPtr GetDC(IntPtr hwnd);
}

!!!!Alternative Managed API:
Do you know one?  Please contribute it!

Documentation: ExtEscape@msdn on MSDN