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IndexOf(int,int) Method

Summary

Gets the index of the size that matches the specified size.

Syntax

C++

public int IndexOf( 
   int Width, 
   int Height 
)

Public Overloads Function IndexOf( _ 
   ByVal Width As Integer, _ 
   ByVal Height As Integer _ 
) As Integer

public: 
int IndexOf(  
   int Width, 
   int Height 
)

Parameters

Width
Video width to find.

Height
Video height to find.

Return Value

The zero-based index of the found item; otherwise, -1 if no item found.

Remarks

Gets the zero-based index of the size that matches the specified size. If the method fails, an error is raised. For more information, refer to the Error Codes.

Example

using Leadtools; 
using Leadtools.MediaFoundation; 
using LeadtoolsMediaFoundationExamples.Fixtures; 
 
public bool _result = false; 
public CaptureCtrlForm _form = new CaptureCtrlForm(); 
 
public void IndexContainsExample() 
{ 
   try 
   { 
      // reference the form capture control 
      CaptureCtrl capturectrl = _form.CaptureCtrl; 
 
      // set a video device first, you should use your video device name here 
      if (capturectrl.VideoDevices["USB"] == null) 
         throw new Exception("No USB video device available"); 
 
      capturectrl.VideoDevices["USB"].Selected = true; 
 
      // reference the video capture sizes collection 
      CaptureSizes sizes = capturectrl.VideoCaptureSizes; 
 
      // check for 640x480 
      int i = sizes.IndexOf(640, 480); 
 
      // access the input via the collection indexer 
      CaptureSize cs = sizes[i]; 
 
      // check if the collection contains this input  
      // (it should we just got it with IndexOf above!) 
      if (sizes.Contains(cs)) 
      { 
         // set the result to what we expect 
         _result = true; 
      } 
   } 
   catch (Exception) 
   { 
      _result = false; 
   } 
}

Imports Leadtools 
Imports Leadtools.MediaFoundation 
Imports LeadtoolsMediaFoundationExamples.Fixtures 
 
Public _result As Boolean = False 
Public _form As CaptureCtrlForm = New CaptureCtrlForm() 
 
Public Sub IndexContainsExample() 
   Try 
      ' reference the form capture control 
      Dim capturectrl As CaptureCtrl = _form.CaptureCtrl 
 
      ' set a video device first, you should use your video device name here 
      If capturectrl.VideoDevices("USB") Is Nothing Then 
         Throw New Exception("No USB video device available") 
      End If 
 
      capturectrl.VideoDevices("USB").Selected = True 
 
      ' reference the video capture sizes collection 
      Dim sizes As CaptureSizes = capturectrl.VideoCaptureSizes 
 
      ' check for 640x480 
      Dim i As Integer = sizes.IndexOf(640, 480) 
 
      ' access the input via the collection indexer 
      Dim cs As CaptureSize = sizes(i) 
 
      ' check if the collection contains this input  
      ' (it should we just got it with IndexOf above!) 
      If sizes.Contains(cs) Then 
         ' set the result to what we expect 
         _result = True 
      End If 
   Catch e1 As Exception 
      _result = False 
   End Try 
End Sub

Requirements

Target Platforms

Reference

CaptureSizes Class

CaptureSizes Members

Overload List

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Help Version 20.0.2020.4.2

Leadtools.MediaFoundation Assembly

Introduction

Getting Started

Namespaces

Leadtools.MediaFoundation Namespace

Leadtools.MediaFoundation.Common Namespace

Assemblies