Implementing an Automated Annotation Program:

Take the following steps to create and run a program that implements automated annotations. Remember, the purpose of the annotation tutorials is to provide you a quick and easy way to generate an annotation program. For more in depth annotation programming, refer to the Annotate demo.

   #if defined(WIN64)
      #pragma comment(lib, "..\\..\\..\\Lib"L_VER_DESIGNATOR"\\CDLL\\x64\\Ltkrn_x.lib")
      #pragma comment(lib, "..\\..\\..\\Lib"L_VER_DESIGNATOR"\\CDLL\\x64\\Ltdis_x.lib")
      #pragma comment(lib, "..\\..\\..\\Lib"L_VER_DESIGNATOR"\\CDLL\\x64\\Ltfil_x.lib")
      #pragma comment(lib, "..\\..\\..\\Lib"L_VER_DESIGNATOR"\\CDLL\\x64\\Ltdlgkrn_x.lib")
      #pragma comment(lib, "..\\..\\..\\Lib"L_VER_DESIGNATOR"\\CDLL\\x64\\Ltdlgfile_x.lib")
      #pragma comment(lib, "..\\..\\..\\Lib"L_VER_DESIGNATOR"\\CDLL\\x64\\Ltann_x.lib")
   #else
      #pragma comment(lib, "..\\..\\..\\Lib"L_VER_DESIGNATOR"\\CDLL\\Win32\\Ltkrn_u.lib")
      #pragma comment(lib, "..\\..\\..\\Lib"L_VER_DESIGNATOR"\\CDLL\\Win32\\Ltdis_u.lib")
      #pragma comment(lib, "..\\..\\..\\Lib"L_VER_DESIGNATOR"\\CDLL\\Win32\\Ltfil_u.lib")
      #pragma comment(lib, "..\\..\\..\\Lib"L_VER_DESIGNATOR"\\CDLL\\Win32\\Ltdlgkrn_u.lib")
      #pragma comment(lib, "..\\..\\..\\Lib"L_VER_DESIGNATOR"\\CDLL\\Win32\\Ltdlgfile_u.lib")
      #pragma comment(lib, "..\\..\\..\\Lib"L_VER_DESIGNATOR"\\CDLL\\Win32\\Ltann_u.lib")
   #endif // #if defined(WIN64)

HANNOBJECT hContainer = 0; // Container annotation object

HANNOBJECT hAutomation = 0; // Automation object

HWND hWndToolbar = 0; // Window for the annotation toolbar

// Create the annotation toolbar and position its top left corner at 0,0

POINT ToolbarPt = {0,0};

L_AnnCreateToolBar(hWnd, &ToolbarPt, ANNTOOLALIGN_LEFT | ANNTOOLALIGN_TOP, TRUE, &hWndToolbar, 0, NULL);

L_VOID SetupAnnotations(HWND hWnd)
{
   // Delete any existing annotation container, automation objects
   if(hAutomation)
   {
      L_AnnSetActiveState(hAutomation, ANNACTIVE_DISABLED);
      L_AnnDestroy(hAutomation, ANNFLAG_NOINVALIDATE);
      hAutomation = 0;
   }

   if(hContainer)
   {
      L_AnnDestroy(hContainer, ANNFLAG_NOINVALIDATE);
      hContainer = 0;
   }

   // Create the automation object
   L_AnnCreate(ANNOBJECT_AUTOMATION, &hAutomation);

   // Set the dots per inch for interpreting physical measurements
   L_AnnSetDpiX(hAutomation, 600, 0);
   L_AnnSetDpiY(hAutomation, 600, 0);

   // Set the number of possible undo actions
   L_AnnSetUndoDepth(hAutomation, 3);

   // Create the annotation container, which we will use as the root container
   ANNRECT ContainerRect;
   ContainerRect.left = 0;
   ContainerRect.top = 0;
   ContainerRect.right = BITMAPWIDTH(&Data.BitmapHandle) -1;
   ContainerRect.bottom = BITMAPHEIGHT(&Data.BitmapHandle) - 1;
   L_AnnCreateContainer(hWnd, &ContainerRect, TRUE, &hContainer);

   // Set the scalars and offsets
   L_AnnSetScalarX(hContainer, 1, 0);
   L_AnnSetScalarY(hContainer, 1, 0);
   L_AnnSetOffsetX(hContainer, (L_DOUBLE) 0, 0);
   L_AnnSetOffsetY(hContainer, (L_DOUBLE) 0, 0);

   // Assign the automation object to the container
   L_AnnSetAutoContainer(hAutomation, hContainer);

   // Enable the automation object
   L_AnnSetActiveState(hAutomation, ANNACTIVE_ENABLED);

   // Set design mode, which allows creation of annotations
   L_AnnSetUserMode(hContainer, ANNUSER_DESIGN);
}

   case IDM_OPEN:
      nRet = Get_OpenFile (hWnd);

      if (nRet == 2)
         ; /* No file was selected for opening, so do nothing. */
      else if (nRet == SUCCESS)
      {
         SetupAnnotations(hWnd);
         FORWARD_WM_QUERYNEWPALETTE (hWnd, SendMessage);
      }
      else
      {
         wsprintf (buf, TEXT("Error %d Loading %s"), nRet,
                  (LPTSTR) Data.szFilename);
         MessageBox (hWnd, buf, TEXT("Error"), MB_OK);
      }
      break;

 L_AnnDraw(hdc, &ps.rcPaint, hContainer);

 // Cleanup for annotations

L_AnnDestroy(hContainer, ANNFLAG_NOINVALIDATE);

L_AnnDestroy(hAutomation, ANNFLAG_NOINVALIDATE);

LRESULT CALLBACK MainWndProc (HWND hWnd, L_UINT Message, WPARAM wParam, LPARAM lParam)
{
   switch (Message)
   {
      HANDLE_MSG (hWnd, WM_CREATE, Window_OnCreate);
      HANDLE_MSG (hWnd, WM_COMMAND, Window_OnCommand);
      HANDLE_MSG (hWnd, WM_PALETTECHANGED, Window_OnPaletteChanged);
      HANDLE_MSG (hWnd, WM_QUERYNEWPALETTE, Window_OnQueryNewPalette);
      HANDLE_MSG (hWnd, WM_PAINT, Window_OnPaint);
      HANDLE_MSG (hWnd, WM_DESTROY, Window_OnDestroy);
      HANDLE_MSG (hWnd, WM_ACTIVATE, Window_OnActivate);
      HANDLE_MSG (hWnd, WM_PALETTEISCHANGING, Window_OnPaletteChanging);
      HANDLE_MSG (hWnd, WM_SYSCOLORCHANGE, Window_SysColorChange);
      HANDLE_MSG (hWnd, WM_LTANNEVENT, Window_AnnEvent);
      }
      return DefWindowProc (hWnd, Message, wParam, lParam);
}

LRESULT Window_AnnEvent(HWND hWnd, WPARAM wParam, LPARAM lParam)
{
   UNREFERENCED_PARAMETER(hWnd);
   switch(wParam)
   {
   case LTANNEVENT_TOOLCHECKED:
      L_AnnSetTool(hAutomation, (L_UINT)lParam);
      break;

   case LTANNEVENT_AUTOENDSET:
      // Set tool back to ANNTOOL_SELECT after finished creating annotation
      L_AnnSetToolBarChecked(hWndToolbar, ANNTOOL_SELECT);
      break;
   }

   return 0;
}
 

   LRESULT Window_AnnEvent(HWND hWnd, WPARAM wParam, LPARAM lParam);