L_AnnGetUserHandle

#include "l_bitmap.h"

L_LTANN_API L_INT L_AnnGetUserHandle(hObject, uIndex, pAnnHandle)

HANNOBJECT hObject;

/* handle to the annotation object with the user-defined handle */

L_INT32 uIndex;

/* index of user handle to get */

pANNHANDLE pAnnHandle;

/* pointer to a structure */

Gets information about the specified user-defined annotation handle.

Parameter

Description

hObject

Handle to the annotation object for which to get the user handle.

uIndex

Index of user handle to get. The index is zero based. Passing a negative value returns ERROR_INV_PARAMETER.

pAnnHandle

Pointer to structure to be updated with the user handle.

Returns

SUCCESS

The function was successful.

< 1

An error occurred. Refer to Return Codes.

Comments

Before calling this function, you must create the annotation object.

Call this function to get information about an existing user-defined annotation handle.

If successful, the entire pAnnHandle structure is filled. The pAnnHandle->uFlags field is ignored. For more information, refer to ANNHANDLE.

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_AnnDeleteUserHandle, L_AnnEnumerateHandles, L_AnnGetRestrictToContainer, L_AnnGetRotateAngle, 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

 

Obtaining Annotation Object Information

Example

This example displays information about the first user handle in an annotation object. 

L_VOID DumpAnnHandle(L_UINT      uIndex,
                     pANNHANDLE  pAnnHandle)
{
   L_TCHAR szMsg[400];

   if (pAnnHandle)
   {
      _stprintf_s(szMsg, TEXT("uIndex %d\nnSize: %d\nnID: %d\n aptContainer[%f,%f]\nptClient[%d,%d]\nbVisible: %s\ncrPen: 0x%x\ncrFill: 0x%x\nnShape: %s\nhCursor: %s\n"),
         uIndex,
         pAnnHandle->uStructSize,  
         pAnnHandle->nID,
         pAnnHandle->aptContainer.x, pAnnHandle->aptContainer.y, 
         pAnnHandle->ptClient.x,     pAnnHandle->ptClient.y,
         pAnnHandle->bVisible ? TEXT("Visible") : TEXT("Not Visible"),
         pAnnHandle->crPen,
         pAnnHandle->crFill,
         pAnnHandle->nShape == ANNHANDLE_SHAPE_SQUARE ? TEXT("Square") : TEXT("Circle"),
         pAnnHandle->hCursor ? TEXT("Cursor") : TEXT("No Cursor")
         );
      MessageBox(NULL, szMsg, TEXT(""), MB_OK);
   }
}

L_INT  AnnGetUserHandleexample(HANNOBJECT hObject)
{
   L_INT nRet;
   L_UINT      uCount;
   ANNHANDLE   AnnHandle;

   // Get the total count of user handles
   nRet = L_AnnGetUserHandles(hObject, NULL, &uCount);
   if(nRet != SUCCESS)
      return nRet;
   if (uCount > 0)
   {
      memset(&AnnHandle, 0, sizeof(ANNHANDLE));
      AnnHandle.uStructSize = sizeof(&AnnHandle);
      nRet = L_AnnGetUserHandle(hObject, 0, &AnnHandle);
      if(nRet != SUCCESS)
         return nRet;
      DumpAnnHandle(0, &AnnHandle);
   }
   else
   {
      MessageBox(NULL, TEXT("No User Handles!"), TEXT("Error"), MB_OK);
      return nRet;
   }
   return SUCCESS;
}