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param1 Field

Summary

Generic parameter one containing event-specific information. The use and possible values of the parameter depend on the MediaEventCode.

Syntax

C++

public long param1

Public param1 As Long

public: 
int64 param1

Example

using Leadtools; 
using Leadtools.Multimedia; 
using LeadtoolsMultimediaExamples.Fixtures; 
 
public bool _result = false; 
public PlayCtrlForm _form = new PlayCtrlForm(); 
 
public void HandleScriptExample() 
{ 
   PlayCtrl playctrl = _form.PlayCtrl; 
   string inFile = Path.Combine(LEAD_VARS.MediaDir, "WriteScriptStream_Dest.wmv"); 
 
   try 
   { 
      playctrl.MediaEvent += new MediaEventHandler(PlayCtrl_MediaEvent); 
 
      playctrl.SourceFile = inFile; 
   } 
   catch (Exception) 
   { 
      return; 
   } 
 
   // we'll loop on the state and pump messages for this example. 
   // but you should not need to if running from a Windows Forms application. 
   while (playctrl.State == PlayState.Running) 
      Application.DoEvents(); 
} 
 
public void PlayCtrl_MediaEvent(object sender, MediaEventArgs e) 
{ 
   if (e.eventCode == MediaEventCode.EC_OLE_EVENT) 
   { 
      string nameString = System.Runtime.InteropServices.Marshal.PtrToStringBSTR(new IntPtr(e.param1)); 
      string commandString = System.Runtime.InteropServices.Marshal.PtrToStringBSTR(new IntPtr(e.param2)); 
      Console.WriteLine("EC_OLE_EVENT: name={0}, command={1}", nameString, commandString); 
      _result = true; 
   } 
} 
 
static class LEAD_VARS 
{ 
   public const string MediaDir = @"C:\LEADTOOLS21\Media"; 
}

Imports Leadtools 
Imports Leadtools.Multimedia 
Imports LeadtoolsMultimediaExamples.Fixtures 
 
Public _result As Boolean = False 
Public _form As New PlayCtrlForm() 
 
Public Sub HandleScriptExample() 
   Dim playctrl As PlayCtrl = _form.PlayCtrl 
   Dim inFile As String = Path.Combine(LEAD_VARS.MediaDir, "WriteScriptStream_Dest.wmv") 
 
   Try 
      AddHandler playctrl.MediaEvent, AddressOf PlayCtrl_MediaEvent 
 
      playctrl.SourceFile = inFile 
   Catch generatedExceptionName As Exception 
      Exit Sub 
   End Try 
 
   ' we'll loop on the state and pump messages for this example. 
   ' but you should not need to if running from a Windows Forms application. 
   While playctrl.State = PlayState.Running 
      Application.DoEvents() 
   End While 
End Sub 
 
Public Sub PlayCtrl_MediaEvent(ByVal sender As Object, ByVal e As MediaEventArgs) 
   If (e.eventCode = MediaEventCode.EC_OLE_EVENT) Then 
      Dim nameString As String = System.Runtime.InteropServices.Marshal.PtrToStringBSTR(New IntPtr(e.param1)) 
      Dim commandString As String = System.Runtime.InteropServices.Marshal.PtrToStringBSTR(New IntPtr(e.param2)) 
      Console.WriteLine("EC_OLE_EVENT: name={0}, command={1}", nameString, commandString) 
      _result = True 
   End If 
End Sub 
 
Public NotInheritable Class LEAD_VARS 
   Public Const MediaDir As String = "C:\LEADTOOLS21\Media" 
End Class

Requirements

Target Platforms

Reference

MediaEventArgs Class

MediaEventArgs Members

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Help Version 21.0.2021.7.2

Leadtools.Multimedia Assembly

Introduction

Getting Started

Namespaces

Leadtools.Multimedia Namespace

Leadtools.Multimedia.Common Namespace

Assemblies