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IndexOf(string,int,int) Method

Summary

Returns the index of the first occurrence of a VideoFormat object whose name matches the given string.

Syntax

C++/CLI

public int IndexOf( 
   string SubTypeName, 
   int Width, 
   int Height 
)

public: 
int IndexOf(  
   String^ SubTypeName, 
   int Width, 
   int Height 
)

Parameters

SubTypeName
A integer value representing the subtype name of the VideoFormat to find.

Width
A integer value representing the width of the VideoFormat to find.

Height
A integer value representing the height of the VideoFormat to find.

Return Value

int The zero-based index position of the VideoFormat item found; otherwise -1 if no item found.

Remarks

Returns the index of the first occurrence of a VideoFormat object whose properties match the given parameters.

Example

using Leadtools; 
using Leadtools.MediaFoundation; 
using LeadtoolsMediaFoundationExamples.Fixtures; 
 
 
public bool _result = false; 
public CaptureCtrlForm _form = new CaptureCtrlForm(); 
 
public void IndexContainsExample() 
{ 
   // reference the capture control 
   CaptureCtrl capturectrl = _form.CaptureCtrl; 
 
   // reference the video formats object 
   VideoFormats videoformats = capturectrl.VideoCaptureFormats; 
 
   try 
   { 
      // select a video device, use your device name here instead of USB 
      if (capturectrl.VideoDevices["USB"] == null) 
         throw new Exception("No USB video device available"); 
 
      capturectrl.VideoDevices["USB"].Selected = true; 
 
      // check the index of YUY2 320 x 240 video 
      int i = videoformats.IndexOf("{32595559-0000-0010-8000-00AA00389B71}", 320, 240); 
 
      // access the format via the collection indexer 
      VideoFormat vf = videoformats[i]; 
 
      // check if the collection contains this format  
      // (it should we just got it with IndexOf above) 
      if (videoformats.Contains(vf)) 
      { 
         // set the result to what we expect 
         _result = true; 
      } 
   } 
   catch (Exception) 
   { 
      _result = false; 
   } 
}

Requirements

Target Platforms

Reference

VideoFormats Class

VideoFormats Members

Overload List

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Help Version 22.0.2022.12.7

Leadtools.MediaFoundation Assembly

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Leadtools.MediaFoundation Namespace

Leadtools.MediaFoundation.Common Namespace

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