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LAnnTextPointer::DeleteUserHandle

#include "ltwrappr.h"

virtual L_INT LAnnTextPointer::DeleteUserHandle(nIndex)

index of the user handle to delete

Deletes an existing user-defined 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 annotation object.

Set nIndex to -1 to delete all the user-defined handles.

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, LAnnTextPointer::AddUserHandle, LAnnTextPointer::EnumerateHandles, LAnnTextPointer::EnumHandleCallBack, LAnnTextPointer::GetUserHandle, LAnnTextPointer::GetUserHandles, LAnnTextPointer::ChangeUserHandle
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
	Fixed Annotations
	Minimizing Flicker With Double Buffering

Example

// This examples deletes the first user handle of an object

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

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