L_AnnDestroy (original) (raw)
Summary
Deletes an annotation object and frees the memory that was used to store the object.
Syntax
#include "l_bitmap.h"
L_LTANN_API L_INT L_AnnDestroy(hObject, uFlags)
Parameters
HANNOBJECT hObject
Handle to the annotation object.
L_UINT 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
| Value | Meaning |
|---|---|
| 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
Win32, x64.
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 a complete sample code, refer to the \Examples\Annotation\C\Annotate demo.
This example destroys the objects within a container, but not the container.
L_INT AnnDestroyExample(HANNOBJECT hAnnObject)
{
return L_AnnDestroy(hAnnObject, ANNFLAG_NOTCONTAINER|ANNFLAG_RECURSE);
}
LEADTOOLS Raster Imaging C API Help