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;
}