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Frustrated!!!

Posted on 1998-07-26
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Last Modified: 2010-05-03
Hi All,
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Question by:bilcrete
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Jason_G earned 100 total points
ID: 1466719
Hi bilcrete,
I found the following on it, in the MSDN library.  It appears as follows;

To determine if the current device supports a particular TimeFormat setting, assign the value to TimeFormat. Then check TimeFormat to see if it returns the value assigned. For example:


   For i = 0 To 10
      MMControl1.TimeFormat = i
      If MMControl1.TimeFormat = i Then
         MsgBox Format$(i) + " supported"
      Else
         MsgBox Format$(i) + " not supported"
      End If
   Next

Some of the time formats, such as MCI_FORMAT_TMSF, provide four separate byte size numbers packed into one four byte long integer. The following sample statements show how you can extract the four bytes into separate variables:

   byte1 =  MMControl1.Position And       &HFF&
   byte2 = (MMControl1.Position And     &HFF00&) \     &H100
   byte3 = (MMControl1.Position And   &HFF0000)  \   &H10000
   byte4 = (MMControl1.Position And &H7F000000)  \ &H1000000
   If (MMControl1.Position And &H80000000) <> 0 Then
      ' put sign bit back into byte4
      byte4 = byte4 + &H80
   End If

The least significant byte is stored in byte1 and the most significant byte is stored in byte4.
The following list shows all possible settings for TimeFormat:


    0  MCI_FORMAT_MILLISECONDS
    1  MCI_FORMAT_HMS
    2  MCI_FORMAT_MSF
    3  MCI_FORMAT_FRAMES
    4  MCI_FORMAT_SMPTE_24
    5  MCI_FORMAT_SMPTE_25
    6  MCI_FORMAT_SMPTE_30
    7  MCI_FORMAT_SMPTE_30DROP
    8  MCI_FORMAT_BYTES
    9  MCI_FORMAT_SAMPLES
   10  MCI_FORMAT_TMSF

The TimeFormat setting MCI_FORMAT_MSF is described in the README.TXT file but is missing from the "Microsoft Visual Basic Professional Features Custom Control Reference" for version 2.0. The following description of MCI_FORMAT_MSF appears in the README.TXT file:
2 MCI_FORMAT_MSF Minutes, seconds, and frames are packed into a

                   four-byte integer.  From least significant byte to
                   most significant byte, the individual data values
                   follow:

                   Minutes (least significant byte)
                   Seconds
                   Frames
                   Unused (most significant byte)

The TimeFormat property affects the following properties.

   Position
   From
   To
   Start
   Length
   TrackLength
   TrackPosition

Microsoft has confirmed that this information should be included in the "Microsoft Visual Basic Professional Features Custom Control Reference" for version 2.0. We will post new information here when the documentation has been updated with this additional information.

I hope this eases your mind a bit.<grin>

Sincerely,
Jason

Jason Gorman (jason_gorman@scholars.com)
Learning Advisor, scholars.com
Microsoft Authorized Technical Education Center
Novell Authorized Online Training Provider
http://scholars.com
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