L_AnnDestroy

#include "l_bitmap.h"

L_LTANN_API L_INT L_AnnDestroy(hObject, uFlags)

HANNOBJECT hObject;

/* handle to the annotation object */

L_UINT uFlags;

/* flags that determine which objects to process */

Deletes an annotation object and frees the memory that was used to store the object.

This function is available in the Document and Medical Imaging toolkits.

Parameter

Description

hObject

Handle to the annotation object.

uFlags

Flags that determine which objects to process. Most of the flags apply only to container objects. You can combine values when appropriate by using a bitwise OR ( | ). The following are valid values:

 

Value

Meaning

 

0

Process only the specified object.

 

ANNFLAG_SELECTED

[0x0001] Process only objects that have the selected property set to TRUE. For getting and setting the selected property, use the L_AnnGetSelected and L_AnnSetSelected functions.

 

ANNFLAG_NOTTHIS

[0x0004] Process only one level of objects within the specified container, not the container itself. If there are containers within the container, they are modified, but the objects within them are not.

 

ANNFLAG_RECURSE

[0x0008] Process objects within a container, and within any subcontainers, down to any level.

 

ANNFLAG_NOTCONTAINER

[0x0002] (Used with ANNFLAG_RECURSE) Process objects within containers, not the containers themselves.

 

ANNFLAG_NOINVALIDATE

[0x0010] Do not invalidate the affected rectangle in the window. Use this to avoid generating unwanted paint messages.

 

ANNFLAG_CHECKMENU

[0x0020] Process objects only if the ANNAUTOTEXT_MENU_DELETE menu item has been selected.

Returns

SUCCESS

The function was successful.

< 1

An error occurred. Refer to Return Codes.

Comments

You should not call this function during processing of WM_LTANNEVENT if wParam equals LTANNEVENT_REMOVE or LTANNEVENT_INSERT, or during the ANNENUMCALLBACK callback function

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

Windows 2000 / XP/Vista.

See Also

Functions:

L_AnnCreate, L_AnnCreateContainer,

 

L_AnnCreateItem, L_AnnDefine, L_AnnInsert,

 

L_AnnRemove, L_AnnAddUserHandle, L_AnnAdjustPoint, L_AnnChangeUserHandle, L_AnnConvert, L_AnnDefine2, L_AnnDeleteUserHandle, L_AnnEnumerateHandles, L_AnnGetRestrictToContainer, L_AnnGetRotateAngle, L_AnnGetUserHandle, L_AnnGetUserHandles, L_AnnHitTest, L_AnnRestrictCursor, L_AnnSetRestrictToContainer

Topics:

Annotation Functions: Creating and Deleting Annotations

 

Implementing Annotations

 

Types of Annotations

 

Implementing an Automated Annotation Program

 

Implementing a Non-automated Annotation Program

 

Implementing Custom Annotations

Example

For complete sample code, refer to the ANNOTATE example. This example destroys the objects within a container, but not the container. 

 L_INT AnnDestroyExample(HANNOBJECT hAnnObject)
{
   L_INT nRet;
   nRet = L_AnnDestroy(hAnnObject, ANNFLAG_NOTCONTAINER|ANNFLAG_RECURSE);
   if(nRet != SUCCESS)
      return nRet;
   return SUCCESS;
}