Print an Image with Annotations

If you have annotation objects on the image, you can print them. There are two ways to do it:

1. Burn annotation objects to the page, and print the page. See Single and Multipage Printing section.

2. You can print annotation objects without burning.

[C++]

/* Print an image and annotations */

#include “BiPrint.h”

void CMyDoc::MyPrint()

{

         GPRINT  sPrint;

         DWORD     nPageCnt;

         // Set printig properties

         sPrint.bDisplay = 1;

         sPrint.bCenterVertImg = 0;

         sPrint.bCenterHorizImg = 0;

         sPrint.bScalePage = 1;

         sPrint.bUseDPI = 1;

         sPrint.nNumCopies = 1;

         sPrint.bConvertCtoB = 0;

         sPrint.bStretchPage = 0;

         sPrint.bAllPage = 1;

         // Prepares to print

         // 1. parameter (HWND): Handle to the window

         // 2. parameter (HDC): Printer DC. Can be NULL.

         // 3. parameter (LPGPRINT): Pointer to the print information structure

         // 4. parameter (LPTSTR): Name of the file to print

         // 5. parameter (UINT): Number of pages in the document

         int ret = PrepareToPrint(AfxGetMainWnd()->m_hWnd, App->m_PrinterDC

                        ,&sPrint, szFileName, nImages);

         POINT ptDPI;

         LPPOINT lpPointDPI = NULL;

         LPBITMAPINFOHEADER lpbmi =

                        (LPBITMAPINFOHEADER)GlobalLock(hDib);

         if(lpbmi->biXPelsPerMeter && lpbmi->biYPelsPerMeter)

         {

            ptDPI.x = (int)( (float)lpbmi->biXPelsPerMeter / 39.37 + 0.5 );

            ptDPI.y = (int)( (float)lpbmi->biYPelsPerMeter / 39.37 + 0.5 );

            lpPointDPI = &ptDPI;

         }

         GlobalUnlock(hDib);

         if (!ret)

         {

            HBITMAP hBmp = ConvertDIBToBitmap(hDib);

            if(hBmp)

            {

                        HDC hDC1 = CreateDC(_T("DISPLAY"),NULL,NULL,NULL);

                        if (hDC1)

                        {

                                    HDC hDC = CreateCompatibleDC( hDC1 );                                                                         if (hDC)

                                    {

                                                HGDIOBJ hOld;

                                                hOld = SelectObject( hDC, hBmp );

                                                AnnoObjDeselect(lAnno, NULL);;

                                                AnnoUIOnPaint( lAnno, hDC );

                                                SelectObject(hDC,hOld);

                                                HDIB hDb = ConvertBitmapToDIB(hBmp, NULL);

                                                if(hDb)

                                                {

                                                            // Copy DPI value from hDib to hDb

                                                            CopyDibDPI( hDb, hDib );

                                                            // 1. parameter: Handle of the DIB

                                                            // 2. parameter: Image DPI

                                                            // 3. parameter: Scaling factor

                                                            // 4. parameter: Current Page number

                                                            // 5. parameter: A positive absolute offset in pixel

                                                            // on the X

                                                            // coordinate on the page to start printing.

                                                            // 6. parameter: A positive absolute offset in pixel

                                                            // on the Y

                                                            // coordinate on the page to start printing.

                                                            PrintDIBPage(hDb, lpPointDPI,

                                                                        &rScale,nCurPage,0,0);

                                                            GlobalFree( hDb );

                                                }

                                                DeleteDC( hDC );

                                    }

                                    DeleteDC( hDC1 );

                        }

                        DeleteObject(hBmp);

            }

         }

         EndPrint(NULL);

}

[C#]

// Burn annotation objects

…

// Print DIB

private void Print()

{

            long hDib = BiDisp.hDib;

            long hwnd = BiDisp.hWnd;

            int[] sRect;

            sRect = new int[4];

            sRect[0] = 1;

            sRect[1] = 1;

            sRect[2] = 1;

            sRect[3] = 1;

            if (PrinterSettings.InstalledPrinters.Count > 0)

            {

                        // Print the actual DIB

                        if (hDib != 0)

                        {

                                    // 1. parameter: Window handle for dialog boxes

                                    // 2. parameter: Capture text to print

                                    // 3. parameter: maximum page number

                                    // 4. parameter: Number of copies

                                    // 5. parameter: Display print dialog box

                                    // 6. parameter: Center image vertically

                                    // 7. parameter: Center image horizontally

                                    // 8. parameter: Scale image to fit proportionally

                                    // 9. parameter: Convert bitmap to monochrome

                                    // 10. parameter: Stretch bitmap

                                    // 11. parameter: All pages

                                    // 12. parameter: Use DPI settings

                                    // 13. parameter: Display or not cancel printing dialog box

                                    BiPrint.PrepareToPrint(hwnd, GetDocument().szFileName,

                                    maxPage, 1, true, false, false, false, false, false, false, true, false);

                                    BiPrint.PrintDIBPage(hDib, ref sRect[0], 1, 0, 0);

                                    BiPrint.EndPrint();

                        }

            }

            else

            {

                        // Error

            }

}