Microsoft KB Archive/171981

From BetaArchive Wiki
< Microsoft KB Archive
Revision as of 11:30, 21 July 2020 by X010 (talk | contribs) (Text replacement - "&" to "&")
(diff) ← Older revision | Latest revision (diff) | Newer revision → (diff)
Knowledge Base


Article ID: 171981

Article Last Modified on 7/1/2004



APPLIES TO

  • Microsoft Visual Basic 6.0 Learning Edition
  • Microsoft Visual Basic 6.0 Professional Edition
  • Microsoft Visual Basic 6.0 Enterprise Edition
  • Microsoft Visual Basic 5.0 Control Creation Edition
  • Microsoft Visual Basic 5.0 Learning Edition
  • Microsoft Visual Basic 5.0 Professional Edition
  • Microsoft Visual Basic 5.0 Enterprise Edition



This article was previously published under Q171981

SUMMARY

This article demonstrates how to play an .AVI (video) file in full screen from Visual Basic for Windows. When you play an .AVI file using the full screen, the color palette focus is set to the .AVI file only. No dithering of colors occurs because there are no other windows in the background to capture the color palette.


MORE INFORMATION

This example uses the mciSendString application programming interface (API). Your computer must be able to play .AVI files for this sample to work.

Step-by-Step Example

  1. Create a new Visual Basic Standard Exe project.
  2. Add a CommandButton (Command1) to Form1, and set its Caption property to "Play Video."
  3. Add the following line of code to the General Declarations section of Form1:

          Private Declare Function mciSendString Lib "winmm.dll" Alias _
            "mciSendStringA" (ByVal lpstrCommand As String, ByVal _
            lpstrReturnString As Any, ByVal uReturnLength As Long, ByVal _
            hwndCallback As Long) As Long
    
                        
  4. Add the following lines of code to the Command1 Click event procedure:

          Sub Command1_Click()
            '// --- Modify FILE_TO_OPEN constant as appropriate ---
            Const FILE_TO_OPEN = "C:\winnt\clock.avi"
            Dim strCmdStr As String
            Dim lngReturnVal As Long
            strCmdStr = "play " & FILE_TO_OPEN & " fullscreen "
            lngReturnVal = mciSendString(strCmdStr, 0&, 0, 0&)
          End Sub
    
                        
  5. Press the F5 key to execute the sample code.
  6. Click the Play Video button to watch the video full screen. The video will last for a few seconds and then return to the Visual Basic environment.


Keywords: kbhowto kbapi KB171981