LAnnAudioClip::DeleteUserHandle

#include "ltwrappr.h"

virtual L_INT LAnnAudioClip::DeleteUserHandle(nIndex)

L_INT32 nIndex;

index of the user handle to delete

Deletes an existing user-defined AudioClip annotation handle.

Parameter

Description

nIndex

Index of the user-defined handle to delete. The index is zero based. Pass -1 to delete all user-defined handles. Passing a negative value other than 1 makes the function return ERROR_INV_PARAMETER.

Returns

SUCCESS

The function was successful.

< 1

An error occurred. Refer to Return Codes.

Comments

Call this function to delete a user-defined handle from an AudioClip annotation object.

Set uIndex to -1 to delete all the user-defined handles for an AudioClip annotation object.

Required DLLs and Libraries

LTANN

For a listing of the exact DLLs and Libraries needed, based on the toolkit version, refer to Files To Be Included With Your Application.

Platforms

Win32, x64.

See Also

Functions:

Class Members

Topics:

Annotation Functions: Object Properties

 

Implementing Annotations

 

Automated User Interface for Annotations

 

Annotation Functions: Creating and Deleting Annotations

 

Types of Annotations

 

Annotation Functions: Implementing Custom Annotations

 

Annotation Functions: Creating Custom Annotations

 

Fixed Annotations

 

Minimizing Flicker With Double Buffering

 

Annotation Functions: Working with the Toolbar

Example

This examples deletes the first user handle of an object

L_INT LAnnAudioClip_DeleteUserHandleExample(LAnnAudioClip *LAudioClip)  
{ 
   L_INT nRet; 
 
   L_UINT uCount;  
  
   // Get the total count of user handles 
 
   nRet = LAudioClip->GetUserHandles(NULL, &uCount);  
   if(nRet != SUCCESS) 
      return nRet; 
  
   if (uCount > 0)  
   { 
     nRet =  LAudioClip->DeleteUserHandle(0);  
     if(nRet != SUCCESS) 
        return nRet; 
   } 
   else 
   { 
      MessageBox(NULL, TEXT("No User Handles!"), TEXT("Error"), MB_OK);  
      return FAILURE; 
   } 
 
   return SUCCESS; 
} 

Help Version 20.0.2019.9.23
Products | Support | Contact Us | Intellectual Property Notices
© 1991-2019 LEAD Technologies, Inc. All Rights Reserved.

LEADTOOLS Raster Imaging C++ Class Library Help