Implementing an Automated Annotations Program (C++ 5.0 and later)

Take the following steps to start a project and to add some code that positions, scales, and displays an image in a dialog box.

1.	Start a new project as follows:
	Run Microsoft Visual Studio, select the File à New à Project, and do the following:
	a.	Expand Visual C++ tree, if it is not already expanded.
	b.	Select MFC from the sub tree.
	c.	Select MFC Application from the right window.
	d.	In the Project name text box, specify Automated.
	e.	In the Location text box, specify the path of the project.
	f.	Click the OK button.
2.	In the overview window Just click Next.
3.	In the Application Type step dialog box, do the following:
	a.	Select Dialog based.
	b.	Use MFC in a shared DLL
	c.	Click the Next button.
3.	In the Step 2 of 4 dialog box, do the following:
	a.	Ensure that About Box is selected.
	b.	Ensure that System Menu is selected.
	c.	Click the Next button.
4.	In the Step 3 of 4 dialog box, Just click Finish:
5.	Add #include statements to your program so you can access the LEAD C++ Class Library constants and classes:
	a.	In the Project Workspace, click the Solution Explorer tab.
	b.	Double-click the Automated Project folder to open it.
	c.	Double-click the Header Files folder to open it.
	d.	Double-click the StdAfx.h file to edit it.
	Add the following lines to the end of the file (keep in mind, you may have to change the path to where the header files reside):

#include "..\..\..\..\..\include\ClassLib\ltWrappr.h"

8.	Add a Button control to the main window as follows:
	a.	In the Project Workspace, click the ResourceView tab.
	b.	Double-click the Automated.rc folder to open it.
	c.	Double-click the Dialog folder to open it.
	d.	Double-click IDD_AUTOMATED_DIALOG to design the form.
	e.	Select the TODO... text control; then press the Delete key to delete it.
	f.	Click the Button control icon; then size and position the control as you want it to appear at run time.

9.	From View menu, select ToolBox, and from the ToolBox Window add a command button to your form and name it as follows:
	ID	Caption
	IDC_BITMAPWND	Bitmap Window

10.	Change the command button properties as follows:
	a.	Right-click on the button then select properties.
	c.	Set the Flat property to TRUE.
	d.	Set the Owner Draw property to TRUE.
	f.	Set the Visible property to FALSE.
	g.	Save the changes.
11.	Press Ctrl-F4 to close all windows back to the Project Workspace.

12.	Add a new class to the project as follows -- this class will be inherited from the LbitmapWindow class:
	a.	From the Project menu, select Add Class
	b.	Expand Visual C++ tree, if it is not already expanded.
	c.	Select C++ from the sub-tree.
	d.	Select C++ Class from the right window. And press OK
	b.	In the Class Type combo box, select Generic class
	c.	In the Class name text box, specify CBitmapWindow
	d.	Click on "Base class" and type LBitmapWindow
	e.	Click the OK button.
13.	Add #include statements to your program so you can access the LEAD C++ Class Library constants and classes:
	a.	In the Project Workspace, click the Solution Explorer tab.
	b.	Double-click the Automated folder to open it.
	c.	Double-click the Header Files folder to open it.
	d.	Double-click the AutomatedDlg.h file to edit it.
	Add the following lines to the beginning of the file, after pragma once.

#include "BitmapWindow.h"

14.	Add the following Member Variables to the CBitmapWindow Class right after public:

   LRESULT MsgProcCallBack(HWND hWnd,UINT uMsg,WPARAM wParam,LPARAM lParam);
   L_VOID SetContainer(LAnnContainer * pContainer);
   L_VOID SetAutomation(LAnnAutomation * pAutomation);
   L_VOID SetToolBar(LAnnToolBar * pToolBar);

   L_VOID OnDraw(HDC hdc, RECT & Rect);

private:
      LAnnContainer* m_pContainer;
      LAnnAutomation *m_pAutomation;
      LAnnToolBar *m_pToolBar;

15.	Add implementation to the member method in CBitmapWindow class:
	a.	In the Project Workspace, click the Solution Explorer tab.
	b.	Double-click the Automated folder to open it.
	c.	Double-click the Header files folder to open it.
	d.	Double-click the BitmapWindow.cpp file to edit it.
	e.	Add the following:

CBitmapWindow::CBitmapWindow()
{
   m_pContainer = NULL;
   m_pAutomation = NULL;
}

CBitmapWindow::~CBitmapWindow()
{

}

L_VOID CBitmapWindow::SetContainer(LAnnContainer * pContainer)
{
   m_pContainer = pContainer;
}

L_VOID CBitmapWindow::SetAutomation(LAnnAutomation * pAutomation)
{
   m_pAutomation = pAutomation;
}

L_VOID CBitmapWindow::SetToolBar(LAnnToolBar * pToolBar)
{
   m_pToolBar = pToolBar;
}

L_VOID CBitmapWindow::OnDraw (HDC hdc, RECT & Rect)
{
   LBitmapWindow::OnDraw(hdc, Rect);
   L_INT nRet;
   if (m_pContainer != NULL)
   {
      nRet = m_pContainer->Draw(hdc, &Rect);
   }

}

LRESULT CBitmapWindow::MsgProcCallBack(HWND hWnd,UINT uMsg,WPARAM wParam,LPARAM lParam)
{
   switch (uMsg)
   {
   case WM_LTANNEVENT:
      if(m_pAutomation != NULL)
      {

            int uChecked = m_pToolBar->GetToolChecked() ;
            m_pAutomation->SetTool(uChecked);
      }
      break;
   };

   return LBitmapWindow::MsgProcCallBack(hWnd,uMsg,wParam,lParam);
}

16.	Create a new file called Imports.cpp in place it beside your project files.
	a.	In the Project Workspace, click the Solution Explorer tab.
	b.	Double-click the Automated folder to open it.
	c.	Right-click the Source files folder and select Add à New item.
	d.	Right-click on the Source file
	e.	Expand Visual C++ tree, if it is not already expanded.
	f.	Select Code from the sub tree.
	g.	Select C++ File (.cpp) from the right window.
	h.	In the name text box, specify Imports.
	i.	Click the OK button.
	j.	Double-click the import.cpp in the solution Explorer and add the following lines:

#include "StdAfx.h"

#if defined(WIN64)
#pragma comment(lib, "..\\..\\..\\..\\Lib\\CDLL\\x64\\Ltwvc_x.lib")
#else
#pragma comment(lib, "..\\..\\..\\..\\Lib\\CDLL\\Win32\\Ltwvc_u.lib")
#endif // #if defined(WIN64)

17.	Add the following Member Variables to CAutomatedDlg Class:
	LAnnContainer	m_LeadAContainer;
	LAnnToolBar	m_LeadAToolBar;
	HANNOBJECT	hAutoObject;
	LAnnAutomation	m_LeadAAutomation;
	CBitmapWindow	m_LBitmap;

18.	Go to the OnInitDialog() function as follows:
	a.	From view menu, select Class view.
	b.	In the Project Workspace, click the ClassView tab.
	c.	Double-click the Automated folder to open it.
	d.	Click on the CAutomatedDlg class.
	e.	Double-click the OnInitDialog()function in the lower window to edit it.
19.	Edit the OnInitDialog() function to add the following code after the line that says //TODO: Add extra initialization here:

   LSettings::LoadLibraries(LT_ALL_LEADLIB);

   L_TCHAR * pszLicenseFile = L"Replace this with the path to the LEADTOOLS license file";
L_TCHAR * pszDeveloperKey = L"Replace this with your developer key";
LSettings::SetLicenseFile(pszLicenseFile, pszDeveloperKey);

   CWnd* pWnd = GetDlgItem(IDC_BITMAPWND);
   //m_LBitmap.SetWndHandle(hWnd);*/
   m_LBitmap.EnableAutoScroll(FALSE);

   CRect rcRect;
   // Get the rectangle of the button
   pWnd->GetWindowRect(&rcRect);
   ScreenToClient(&rcRect);

   // Create the LBitmapWindow control, make it visible, and make it center the image
   HWND hWnd = m_LBitmap.CreateWnd(GetSafeHwnd(),
                                   901,
                                   WS_VISIBLE|L_BS_CENTER|WS_HSCROLL,
                                   rcRect.TopLeft().x,
                                   rcRect.TopLeft().y,
                                   rcRect.BottomRight().x,
                                   rcRect.BottomRight().y);

   int nRet = 0;
   RECT rcClientArea;
   ANNRECT rcContainerRect;


   nRet = m_LBitmap.Load(MAKE_IMAGE_PATH(TEXT("image1.cmp")));

   if(nRet == SUCCESS)
   {
      ::GetClientRect(hWnd,&rcClientArea);
      m_LBitmap.SetDstRect(&rcClientArea);

      rcContainerRect.left = 0;
      rcContainerRect.top = 0;
      rcContainerRect.right = rcClientArea.right-rcClientArea.left;
      rcContainerRect.bottom = rcClientArea.bottom-rcClientArea.top;

      m_LeadAContainer.Create(hWnd,&rcContainerRect,TRUE);
      m_LeadAContainer.SetOffsetX((L_DOUBLE) 0, 0);
      m_LeadAContainer.SetOffsetY((L_DOUBLE) 0, 0);

      m_LeadAAutomation.Create();

      /* Assign the automation object to the container */
      m_LeadAAutomation.SetAutoContainer(&m_LeadAContainer);
      /* Enable the automation object */
      m_LeadAAutomation.SetActiveState(ANNACTIVE_ENABLED);
      /* Set design mode, which allows creation of annotations */
      m_LeadAContainer.SetUserMode();
      /* Set the dots per inch for interpreting physical measurements */
      m_LeadAContainer.SetDpiX(600, 0);
      m_LeadAContainer.SetDpiY(600, 0);

      /* Set the number of possible undo actions */
      m_LeadAAutomation.SetUndoDepth(3);
      /* Set the line tool as the initial annotation tool */

      m_LeadAToolBar.Create(this->GetSafeHwnd(), NULL, ANNTOOLALIGN_RIGHT | ANNTOOLALIGN_TOP, TRUE);

      m_LBitmap.SetContainer(&m_LeadAContainer);
      m_LBitmap.SetAutomation(&m_LeadAAutomation);
      m_LBitmap.SetToolBar(&m_LeadAToolBar);
   }

20.	Go to AnnotationDlg.h file then add the following function declaration:

afx_msg void OnClose();

21.	Go to AnnotationDlg.cpp file then add the following line between the BEGIN_MESSAGE_MAP and END_MESSAGE_MAP:

ON_WM_CLOSE()

22.	Add the following function:

void CAutomatedDlg::OnClose()
{
   if (m_LBitmap.IsAllocated())
   {
      m_LBitmap.Free();
      m_LBitmap.SetContainer(NULL);
      m_LBitmap.SetAutomation(NULL);
      m_LBitmap.SetToolBar(NULL);
      m_LeadAAutomation.SetActiveState(ANNACTIVE_DISABLED);
      m_LeadAAutomation.Destroy ();
      m_LeadAContainer.Destroy();
      m_LeadAToolBar.Destroy();
   }
CDialog::OnClose();
}

23.	On the main menu, select Build > Build Automated.exe to build the project.
24.	On the main menu, select Build > Execute Automated.exe to run the project.