LAnnButton::GetUserHandles

#include "ltwrappr.h"

virtual L_INT LAnnButton::GetUserHandles(pAnnHandle, pCount)

pANNHANDLE pAnnHandle;	array of ANNHANDLEstructures 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.

Parameter	Description
pAnnHandle	Array of ANNHANDLEstructures to be updated with the user-defined handles.
pCount	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.

Platforms

Win32, x64.

Example

// This example displays information about all the user handles in an object 
static 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_INT LAnnButton_GetUserHandlesExample(LAnnButton * LButton) 
{ 
   L_INT nRet; 
   L_UINT i; 
   L_UINT uCount; 
   pANNHANDLE pAnnHandle; 
   // Get the total count of user handles, and allocate memory 
   nRet = LButton->GetUserHandles(NULL, &uCount); 
   if(nRet != SUCCESS) 
      return nRet; 
   pAnnHandle = (pANNHANDLE)malloc(uCount * sizeof(ANNHANDLE)); 
   nRet =  LButton->GetUserHandles(pAnnHandle, &uCount); 
   if(nRet != SUCCESS) 
      return nRet; 
   for (i = 0; i<uCount; i++) 
   DumpAnnHandle(i, pAnnHandle + i); 
   free(pAnnHandle); 
   return SUCCESS; 
}

Help Version 19.0.2017.10.27

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LEADTOOLS Raster Imaging C++ Class Library Help

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Summary of Features

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