windows-server-2003/windows/advcore/gdiplus/test/emfdcode/wmfprint.c

/***********************************************************************

  MODULE     : WMFPRINT.C

  FUNCTIONS  : PrintWMF
               GetPrinterDC
               AbortProc
               AbortDlg

  COMMENTS   :

************************************************************************/

#include "windows.h"
#include "mfdcod32.h"

PRINTDLG pd;

/***********************************************************************

  FUNCTION   : PrintWMF

  PARAMETERS : void

  PURPOSE    : draw the metafile on a printer dc

  CALLS      : WINDOWS
                 wsprintf
                 MessageBox
                 MakeProcInstance
                 Escape
                 CreateDialog
                 SetMapMode
                 SetViewportOrg
                 SetViewportExt
                 EnableWindow
                 PlayMetaFile
                 DestroyWindow
                 DeleteDC

               APP
                 WaitCursor
                 GetPrinterDC
                 SetPlaceableExts
                 SetClipMetaExts

  MESSAGES   : none

  RETURNS    : BOOL - 0 if unable to print 1 if successful

  COMMENTS   :

  HISTORY    : 1/16/91 - created - drc
               7/9/93 - modified for win32 and emf

************************************************************************/

BOOL PrintWMF(BOOL Dialog)
{
  char str[50];
  POINT lpPT;
  SIZE  lpSize;
  DOCINFO di;
  RECT rc;
  //
  //display the hourglass cursor
  //
  WaitCursor(TRUE);
  //
  //get a DC for the printer
  //
  hPr = GetPrinterDC(Dialog);
  //
  //if a DC could not be created then report the error and return
  //
  if (!hPr)
  {
    WaitCursor(FALSE);
    wsprintf((LPSTR)str, "Cannot print %s", (LPSTR)fnameext);
    MessageBox(hWndMain, (LPSTR)str, NULL, MB_OK | MB_ICONHAND);
    return (FALSE);
  }
  //
  //define the abort function
  //
  SetAbortProc(hPr, AbortProc);
  //
  //Initialize the members of a DOCINFO structure.
  //
  memset(&di, 0, sizeof(di));
  di.cbSize = sizeof(DOCINFO);
  di.lpszDocName = (bEnhMeta) ? "Print EMF" : "Print WMF";
  di.lpszOutput = (LPTSTR) NULL;
  //
  //Begin a print job by calling the StartDoc
  //function.
  //
  if (SP_ERROR == (StartDoc(hPr, &di)))
  {
  //if (Escape(hPr, STARTDOC, 4, "Metafile", (LPSTR) NULL) < 0)  {
    MessageBox(hWndMain, "Unable to start print job",
               NULL, MB_OK | MB_ICONHAND);
    DeleteDC(hPr);
  }
  //
  //clear the abort flag
  //
  bAbort = FALSE;
  //
  //Create the Abort dialog box (modeless)
  //
  hAbortDlgWnd = CreateDialog(hInst, "AbortDlg", hWndMain, AbortDlg);
  //
  //if the dialog was not created report the error
  //
  if (!hAbortDlgWnd)
  {
    WaitCursor(FALSE);
    MessageBox(hWndMain, "NULL Abort window handle",
               NULL, MB_OK | MB_ICONHAND);
    return (FALSE);
  }
  //
  //show Abort dialog
  //
  ShowWindow (hAbortDlgWnd, SW_NORMAL);
  //
  //disable the main window to avoid reentrancy problems
  //
  EnableWindow(hWndMain, FALSE);
  WaitCursor(FALSE);
  //
  //if we are still committed to printing
  //
  if (!bAbort)
  {
    //
    //if this is a placeable metafile then set its origins and extents
    //
    if (bPlaceableMeta)
        SetPlaceableExts(hPr, placeableWMFHeader, WMFPRINTER);
    //
    //if this is a metafile contained within a clipboard file then set
    //its origins and extents accordingly
    //
    if ( (bMetaInRam) && (!bPlaceableMeta) )
    SetClipMetaExts(hPr, lpMFP, lpOldMFP, WMFPRINTER);
    //
    //if this is a "traditional" windows metafile
    //
    rc.left = 0;
    rc.top = 0;
    rc.right = GetDeviceCaps(hPr, HORZRES);
    rc.bottom = GetDeviceCaps(hPr, VERTRES);

    if (!bMetaInRam)
    {
      SetMapMode(hPr, MM_TEXT);
      SetViewportOrgEx(hPr, 0, 0, &lpPT);
      //
      //set the extents to the driver supplied values for horizontal
      //and vertical resolution
      //
      SetViewportExtEx(hPr, rc.right, rc.bottom, &lpSize );
    }
    //
    //play the metafile directly to the printer.
    //No enumeration involved here
    //
    if (bEnhMeta)
    {
      DPtoLP(hPr, (LPPOINT)&rc, 2);
      PlayEnhMetaFile(hPr, hemf, &rc);
    }
    else
      PlayMetaFile(hPr, hMF);
  }
  //
  //eject page and end the print job
  //
  Escape(hPr, NEWFRAME, 0, 0L, 0L);

  EndDoc(hPr);

  EnableWindow(hWndMain, TRUE);
  //
  //destroy the Abort dialog box
  //
  DestroyWindow(hAbortDlgWnd);

  DeleteDC(hPr);

  return(TRUE);
}

/***********************************************************************

  FUNCTION   : GetPrinterDC

  PARAMETERS : BOOL: Do we want to show a print DLG?

  PURPOSE    : Get hDc for current device on current output port according
               to info in WIN.INI.

  CALLS      : WINDOWS
                 GetProfileString
                 AnsiNext
                 CreateDC

  MESSAGES   : none

  RETURNS    : HANDLE - hDC > 0 if success  hDC = 0 if failure

  COMMENTS   : Searches WIN.INI for information about what printer is
               connected, and if found, creates a DC for the printer.

  HISTORY    : 1/16/91 - created - denniscr

************************************************************************/

HANDLE GetPrinterDC(BOOL Dialog)
{

  memset(&pd, 0, sizeof(PRINTDLG));
  pd.lStructSize = sizeof(PRINTDLG);
  pd.Flags = PD_RETURNDC | (Dialog?0:PD_RETURNDEFAULT);
  pd.hwndOwner = hWndMain ;
  return ((PrintDlg(&pd) != 0) ? pd.hDC : NULL);
}

/***********************************************************************

  FUNCTION   : AbortProc

  PARAMETERS : HDC hPr - printer DC
               int Code - printing status

  PURPOSE    : process messages for the abort dialog box

  CALLS      : WINDOWS
                 PeekMessage
                 IsDialogMessage
                 TranslateMessage
                 DispatchMessage

  MESSAGES   : none

  RETURNS    : int

  COMMENTS   :

  HISTORY    : 1/16/91 - created - denniscr

************************************************************************/

BOOL CALLBACK AbortProc(HDC hPr, int Code)
{
  MSG msg;
  //
  //Process messages intended for the abort dialog box
  //
  while (!bAbort && PeekMessage(&msg, NULL, 0, 0, PM_REMOVE))
      if (!IsDialogMessage(hAbortDlgWnd, &msg))
      {
          TranslateMessage(&msg);
          DispatchMessage(&msg);
      }
  //
  //bAbort is TRUE (return is FALSE) if the user has aborted
  //
  return (!bAbort);
}

/***********************************************************************

  FUNCTION   : AbortDlg

  PARAMETERS : HWND hDlg;
               unsigned msg;
               WORD wParam;
               LONG lParam;

  PURPOSE    : Processes messages for printer abort dialog box

  CALLS      : WINDOWS
                 SetFocus

  MESSAGES   : WM_INITDIALOG - initialize dialog box
               WM_COMMAND    - Input received

  RETURNS    : BOOL

  COMMENTS   : This dialog box is created while the program is printing,
               and allows the user to cancel the printing process.

  HISTORY    : 1/16/91 - created - denniscr

************************************************************************/

INT_PTR CALLBACK AbortDlg(HWND hDlg, UINT msg, WPARAM wParam, LPARAM lParam)
{
    switch(msg)
    {
        //
        //Watch for Cancel button, RETURN key, ESCAPE key, or SPACE BAR
        //
        case WM_INITDIALOG:
            //
            //Set the focus to the Cancel box of the dialog
            //
            SetFocus(GetDlgItem(hDlg, IDCANCEL));
            return (TRUE);

        case WM_COMMAND:
            return (bAbort = TRUE);

        }
    return (FALSE);
}