L_AnnDeleteUserHandle

#include "l_bitmap.h"

L_LTANN_API L_INT L_AnnDeleteUserHandle(hObject, nIndex)

HANNOBJECT hObject;	handle to the annotation object
L_INT32 nIndex;	index of the user handle to delete

Deletes an existing user-defined annotation handle.

Parameter	Description
hObject	Handle to the annotation object from which to delete the user handle.
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 uIndex to -1 to delete all the user-defined handles for annotation object hObject;

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:	L_AnnDefine, L_AnnAddUserHandle, L_AnnAdjustPoint, L_AnnChangeUserHandle, L_AnnConvert, L_AnnDefine2, L_AnnEnumerateHandles, L_AnnGetRestrictToContainer, L_AnnGetRotateAngle, L_AnnGetUserHandle, L_AnnGetUserHandles, L_AnnHitTest, L_AnnRestrictCursor, L_AnnSetRestrictToContainer
Topics:	Annotation Functions: Creating and Deleting Annotations
	Implementing Custom Annotations
	Implementing Annotations
	Implementing an Automated Annotation Program
	Implementing a Non-automated Annotation Program
	Types of Annotations
	Annotation Objects - Default Values

Example

This examples deletes the first user handle of an object.

L_INT AnnDeleteUserHandleExample(HANNOBJECT hObject) 
{ 
   L_INT nRet; 
   L_UINT uCount; 
   // Get the total count of user handles 
   nRet = L_AnnGetUserHandles(hObject, NULL, &uCount); 
   if(nRet != SUCCESS) 
      return nRet; 
   if (uCount > 0) 
   { 
      L_AnnDeleteUserHandle(hObject, 0); 
   } 
   else 
   { 
      MessageBox(NULL, TEXT("No User Handles!"), TEXT("Error"), MB_OK); 
      return 0; 
   } 
   return SUCCESS; 
}

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