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LAnnVideo::EnumerateHandles

#include "ltwrappr.h"

virtual L_INT LAnnVideo::EnumerateHandles()

Calls the LAnnVideo::EnumHandleCallBack function for ALL handles (both default and user-defined) for an annotation object.

Returns

SUCCESS	The function was successful.
< 1	An error occurred. Refer to Return Codes.

Comments

Use this function to get information about all annotation handles for an annotation object.

Note that this function returns information about both default annotation handles and user-defined annotation handles.

This function can also be used to change some of the properties of an annotation handle.

For more information, refer to the LAnnVideo::EnumHandleCallBack function.

Required DLLs and Libraries

LTANN LTMM For a listing of the exact DLLs and Libraries needed for LTANN, based on the toolkit version, refer to Files To Be Included With Your Application. For a listing of the exact DLLs and Libraries needed for LTMM, based on the toolkit version, refer to Files To Be Included With Your Application.

Platforms

Win32, x64.

See Also

Functions:	Class Members, LAnnVideo::AddUserHandle, LAnnVideo::EnumHandleCallBack, LAnnVideo::GetUserHandle, LAnnVideo::GetUserHandles, LAnnVideo::ChangeUserHandle, LAnnVideo::DeleteUserHandle, LAnnContainer::Convert, LAnnContainer::HitTest, LAnnContainer::RestrictCursor, LAnnotation::GetRestrictToContainer, LAnnotation::SetRestrictToContainer, LAnnotation::Define2, LAnnotation::Define
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
	Annotation Functions: Creating Custom Annotations

Example

/*<struct>*/
#if defined(MyAnnVideo)
class MyAnnVideo: public LAnnVideo
{
public: 
   virtual L_INT EnumHandleCallBack(HANNOBJECT hObject, pANNHANDLEINFO pHandleInfo); 
};
#endif
/*</struct>*/
L_INT MyAnnVideo::EnumHandleCallBack(HANNOBJECT hObject, pANNHANDLEINFO pHandleInfo) 
{
        UNREFERENCED_PARAMETER(hObject);
   pHandleInfo->bVisible = TRUE; 
   if (pHandleInfo->nType == ANNHANDLETYPE_DEFAULT_HANDLE) 
   {
      pHandleInfo->nShape = ANNHANDLE_SHAPE_SQUARE; 
      pHandleInfo->crFill = RGB(0,0,255); 
   }
   else
   {
      pHandleInfo->nShape = ANNHANDLE_SHAPE_CIRCLE; 
      pHandleInfo->crFill = RGB(0,255,0); 
   }
   return SUCCESS_CHANGE; 
}
L_INT LAnnVideo_EnumerateHandlesExample(MyAnnVideo *LVideo) 
{
        L_INT nRet;
   LVideo->EnableCallBack(TRUE); 
   nRet = LVideo->EnumerateHandles();
        if(nRet != SUCCESS)
                return nRet;
        return SUCCESS;
}