Print operation class for printer under Windows VS2015

#include"stdafx.h"#include"CPrinter.h"BOOL Cprinter::getprinterdevice (LPTSTR pszprintername, Hglobal* Phdevnames, hglobal*Phdevmode) {    //if NULL is passed and then assume we are setting app object ' s//DevMode and DevNames    if(Phdevmode = = NULL | | phdevnames = =NULL)returnFALSE; //Open PrinterHANDLE hprinter; if(OpenPrinter (Pszprintername, &hprinter, NULL) = =FALSE)returnFALSE; //obtain PRINTER_INFO_2 structure and close PRINTERDWORD dwbytesreturned, dwbytesneeded; GetPrinter (Hprinter,2Null0, &dwbytesneeded); Printer_info_2* P2 = (printer_info_2*) GlobalAlloc (gptr, dwbytesneeded); if(GetPrinter (Hprinter,2, (LPBYTE) P2, dwbytesneeded,&dwbytesreturned) = =0) {GlobalFree (P2);        ClosePrinter (hprinter); returnFALSE;    } ClosePrinter (Hprinter); //Allocate a global handle for DEVMODEHglobal Hdevmode = GlobalAlloc (GHND,sizeof(*p2->pdevmode) +P2->pdevmode->Dmdriverextra);    ASSERT (Hdevmode); DEVMODE* pDevMode = (devmode*) GlobalLock (Hdevmode);    ASSERT (pDevMode); //copy DEVMODE data from printer_info_2::p DEVMODEmemcpy (pDevMode, P2->pdevmode,sizeof(*p2->pdevmode) +P2->pdevmode->Dmdriverextra);    GlobalUnlock (Hdevmode); //Compute size of DEVNAMES structure from printer_info_2 ' s dataDWORD Drvnamelen = lstrlen (p2->pdrivername) +1;//driver nameDWORD Ptrnamelen = lstrlen (p2->pprintername) +1;//Printer NameDWORD Pornamelen = lstrlen (p2->pportname) +1;//Port Name//Allocate A global handle big enough to the hold DEVNAMES.Hglobal hDevNames =GlobalAlloc (GHND,sizeof(DEVNAMES) +(Drvnamelen+ Ptrnamelen + pornamelen) *sizeof(TCHAR));    ASSERT (hDevNames); DEVNAMES* Pdevnames = (devnames*) GlobalLock (hdevnames);    ASSERT (Pdevnames); //Copy The DEVNAMES information from Printer_info_2//Tcoffset = TCHAR Offset into structure    intTcoffset =sizeof(DEVNAMES)/sizeof(TCHAR); ASSERT (sizeof(DEVNAMES) = = tcoffset*sizeof(TCHAR)); Pdevnames->wdriveroffset =Tcoffset; memcpy ((LPTSTR) Pdevnames+ Tcoffset, p2->pDriverName, Drvnamelen*sizeof(TCHAR)); Tcoffset+=Drvnamelen; Pdevnames->wdeviceoffset =Tcoffset; memcpy ((LPTSTR) Pdevnames+ Tcoffset, p2->pPrinterName, Ptrnamelen*sizeof(TCHAR)); Tcoffset+=Ptrnamelen; Pdevnames->woutputoffset =Tcoffset; memcpy ((LPTSTR) Pdevnames+ Tcoffset, p2->Pportname, Pornamelen*sizeof(TCHAR)); Pdevnames->wdefault =0;    GlobalUnlock (hDevNames);   GlobalFree (p2); //Free printer_info_2//set the new Hdevmode and hDevNames*phdevmode =Hdevmode; *phdevnames =hDevNames; returnTRUE;}/*First, you print the preparation work, get the action handle to the device*/BOOL cprinter::P rintstr (CString strmessage,bool iscut,intprnnum) {#ifdef DEBUG log. LOGF ("%s","Start printing");#endifTCHAR cutstr[4] = {0x1D,0x53,0x31 }; if(! Getprinterdevice (M_strprintdevice.getbuffer (0), &m_hdevnames, &M_hdevmode)) {AfxMessageBox (_t ("Getprinterdevice called failed!")); return false; }    Else{AfxGetApp ()-Selectprinter (M_hdevmode, m_hdevnames);    } m_strprintdevice.releasebuffer ();    CPrintDialog Printerdlg (FALSE); PrinterDlg.m_pd.hDevMode=M_hdevmode; PrinterDlg.m_pd.hDevNames=M_hdevnames;        CDC DC; if(PRINTERDLG.CREATEPRINTERDC () = =NULL) {AfxMessageBox (_t ("CREATEPRINTERDC Failure")); return false; } DC.    Attach (PrinterDlg.m_pd.hDC);                                                                             DocInfo di; //the following content on the Internet a lot, do not explainDi.cbsize =sizeof(DocInfo); Di.lpszdocname= _t ("Drive-by printing test"); Di.lpszdatatype=NULL; Di.lpszoutput=NULL; Di.fwtype=0; CRect Recprint (0,0, DC. GetDeviceCaps (LOGPIXELSX), DC.    GetDeviceCaps (Logpixelsy)); dc. Dptolp (&recprint); dc. SetWindowOrg (0,0);    CFont NewFont; //VERIFY (Newfont.createpointfont, _t ("Arial"), &DC);VERIFY (Newfont.createpointfont (_ttoi (m_fontsize), M_fontname, &DC)); CFont* Oldfont = DC. SelectObject (&NewFont); dc. SetTextAlign (Ta_top|ta_left);    CString Strprint; intNIndex =0; intx =0; inty = -;    CSize textSize; TextSize= DC. GetTextExtent (_t ("xx"),2); dc. STARTDOCW (&di); dc.    StartPage (); dc.           Setmapmode (Mm_text); //based on the width and height of the current font, followed by this height as the row high             while((NIndex = Strmessage.find (_t ("\ n"))) >-1))//Print the contents of the Idc_edit1 edit box, support line wrapping, a line break equals ' \ r \ n ', so at the beginning strmessage + = _t ("\ r \ n"){strprint=Strmessage.left (NIndex); strmessage= Strmessage.mid (NIndex +2); dc.            TEXTOUTW (x, y, strprint); Y+ = textsize.cy;//Move down one line, line height to font height        }        if(m_cut==l"1") {y+= -; dc.        TEXTOUTW (x, y, cutstr); }        Else{y+= -; dc. TEXTOUTW (x,y,_t ("")); } DC.    SelectObject (Oldfont);    Newfont.deleteobject (); dc.    EndPage (); dc.    EndDoc (); DeleteDC (DC.    Detach ()); return true;}

Print operation class for printer under Windows VS2015