<DllImport("kernel32.dll", SetLastError:=True)> Private Shared Function GetCommTimeouts(ByVal hFile As IntPtr, ByRef lpCommTimeouts As COMMTIMEOUTS) As Boolean

Documentation

[GetCommTimeouts] on MSDN

3: SetCommTimeouts

Summary

The SetCommTimeouts API

static extern bool SetCommTimeouts(IntPtr hFile, [In] ref COMMTIMEOUTS

lpCommTimeouts);

<DllImport("kernel32.dll", SetLastError:=True)> Private Shared Function SetCommTimeouts(ByVal hFile As IntPtr, ByRef lpCommTimeouts As COMMTIMEOUTS) As Boolean

Documentation

[SetCommTimeouts] on MSDN

winmm

4: midiStreamPosition

Declare Function midiStreamPosition Lib "winmm.dll" (ByVal hms As IntPtr, ByVal pmmt As MMTIME, ByVal cbmmt As UInteger) As Integer

Structure MMTIME

5: timeBeginPeriod

// tickcount has resolution of 16.5ms, mmtime has 1ms

oWriter.WriteLine("{0}: TickCount={1}, MMTime={2}", nLoop, Environment.TickCount, MM_GetTime());

6: timeGetSystemTime

static extern UInt32 timeGetSystemTime( ref MmTime mmTime, UInt32 sizeMmTime );

7: timeSetEvent

public class MMTimer : IDisposable

~MMTimer()

public MMTimer()

Debug.WriteLine("MMTimer " + id.ToString() + " stopped");

Debug.WriteLine("MMTimer " + id.ToString() + " started");

//Callback from the MMTimer API that fires the Timer event. Note we are in a different thread here

Structures

8: COMMTIMEOUTS

Summary

The COMMTIMEOUTS structure is used in the SetCommTimeouts and GetCommTimeouts functions to set and query the time-out parameters for a communications device. The parameters determine the behavior of ReadFile, WriteFile, ReadFileEx, and WriteFileEx operations on the device.

struct COMMTIMEOUTS {

Private Type COMMTIMEOUTS

Public Structure COMMTIMEOUTS

Documentation

[COMMTIMEOUTS] on MSDN Or http://msdn2.microsoft.com/en-us/library/aa363190.aspx

9: MmTime

struct MmTime {

Public Structure MmTime

Documentation

[MmTime] on MSDN

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