LAnnButton::GetUserHandles

#include "ltwrappr.h"

virtual L_INT LAnnButton::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 ANNHANDLEstructures 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

Functions:	Class Members
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(LAnnButton * LButton)
{
   L_UINT i;
   L_UINT uCount;
   pANNHANDLE pAnnHandle;

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

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

   free(pAnnHandle);
}