LAnnHotSpot::GetUserHandles

#include "ltwrappr.h"

virtual L_INT LAnnHotSpot::GetUserHandles(pAnnHandle, puCount)

pANNHANDLE pAnnHandle;

/* array of ANNHANDLE structures that define user handles */

L_UINT *pCount;

/* pointer to an unsigned integer used to return the total count of user handles */

Gets information about all existing user-defined annotation handles. This function is available in the Document/Medical Toolkits.

Parameter

Description

pAnnHandle

Array of ANNHANDLE structures to be updated with the user-defined handles.

puCount

Pointer to an unsigned integer used to return the total number of user handles

Returns

SUCCESS

The function was successful.

< 1

An error occurred. Refer to Return Codes.

Comments

Call with pAnnHandle == NULL to get the total number of user handles. Then allocate memory for an array of ANNHANDLE structures and call this function again.

Gets an array of user-defined handles associated with the annotation object.

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.

See Also

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

 

Fixed Annotations

 

Minimizing Flicker With Double Buffering

 

Annotation Functions: Working with the Toolbar

Example

// This example displays information about all the user handles in an object
L_VOID DumpAnnHandle(L_UINT uIndex, pANNHANDLE pAnnHandle) 
{
   L_TCHAR szMsg[400]; 
   
   if (pAnnHandle) 
   {
      wsprintf(szMsg, TEXT("uIndex %d\nuStructSize: %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_VOID ExampleAnnGetUserHandles(LAnnHotSpot * LHotSpot) 
{
   L_UINT i; 
   L_UINT uCount; 
   pANNHANDLE pAnnHandle; 

   // Get the total count of user handles, and allocate memory
   LHotSpot->GetUserHandles(NULL, &uCount); 
   pAnnHandle = (pANNHANDLE)malloc(uCount * sizeof(ANNHANDLE)); 

   LHotSpot->GetUserHandles(pAnnHandle, &uCount); 
   for (i = 0; i<uCount; i++)
      DumpAnnHandle(i, pAnnHandle + i); 

   free(pAnnHandle); 
}