print2.c

来自「《Windows程序设计》配套代码、LZW压缩算法源代码、Socket异步通信示」· C语言 代码 · 共 63 行

/*-------------------------------------------
   PRINT2.C -- Printing with Abort Procedure
               (c) Charles Petzold, 1998
  -------------------------------------------*/

#include <windows.h>

HDC  GetPrinterDC (void) ;              // in GETPRNDC.C
void PageGDICalls (HDC, int, int) ;     // in PRINT.C

HINSTANCE hInst ;
TCHAR     szAppName[] = TEXT ("Print2") ;
TCHAR     szCaption[] = TEXT ("Print Program 2 (Abort Procedure)") ;

BOOL CALLBACK AbortProc (HDC hdcPrn, int iCode)
{
     MSG msg ;
     
     while (PeekMessage (&msg, NULL, 0, 0, PM_REMOVE))
     {
          TranslateMessage (&msg) ;
          DispatchMessage (&msg) ;
     }
     return TRUE ;
}

BOOL PrintMyPage (HWND hwnd)
{
     static DOCINFO di = { sizeof (DOCINFO), TEXT ("Print2: Printing") } ;
     BOOL           bSuccess = TRUE ;
     HDC            hdcPrn ;
     short          xPage, yPage ;
     
     if (NULL == (hdcPrn = GetPrinterDC ()))
          return FALSE ;
     
     xPage = GetDeviceCaps (hdcPrn, HORZRES) ;
     yPage = GetDeviceCaps (hdcPrn, VERTRES) ;
     
     EnableWindow (hwnd, FALSE) ;
     
     SetAbortProc (hdcPrn, AbortProc) ;
     
     if (StartDoc (hdcPrn, &di) > 0)
     {
          if (StartPage (hdcPrn) > 0)
          {
               PageGDICalls (hdcPrn, xPage, yPage) ;
               
               if (EndPage (hdcPrn) > 0)
                    EndDoc (hdcPrn) ;
               else
                    bSuccess = FALSE ;
          }
     }
     else
          bSuccess = FALSE ;
     
     EnableWindow (hwnd, TRUE) ;
     DeleteDC (hdcPrn) ;
     return bSuccess ;
}