PRINTER.C

/******************************Module*Header*******************************\ 
* Module Name: printer.c 
* 
* Contains functions for enermerating printers 
* 
* Created: 16-Apr-1992 11:19:00 
* 
* Copyright 1993 - 1998 Microsoft Corporation 
* 
* Before printing the bInitPrinter is called for enumerating printers 
* and doing the setup for printing 
* 
* When Mandelbrot Dream exits, bCleanupPrinter is called to free up 
* memory 
* 
* Dependencies: 
* 
*   (#defines) 
*   (#includes) 
* 
\**************************************************************************/ 
#include <windows.h> 
#include <winspool.h> 
#include <drivinit.h> 
#include "julia.h" 
#include "printer.h" 
 
// 
// Globals for printing 
// 
PPRINTER_INFO_1     gpPrinters       = NULL; 
PSZ                *gpszPrinterNames = NULL; 
PSZ                *gpszDeviceNames  = NULL; 
 
extern HMENU  hPrinterMenu; 
extern INT    giNPrinters; 
extern HWND   ghwndMain; 
 
BOOL bInitPrinter(HWND); 
BOOL bCleanupPrinter(VOID); 
 
 
/******************************Public*Routine******************************\ 
* 
* bInitPrinter 
* 
* Effects: Enumerating printers... 
* 
* Warnings: Globals alert!! 
* 
\**************************************************************************/ 
 
BOOL bInitPrinter(HWND hwnd) { 
    BOOL        bSuccess; 
    DWORD       cbPrinters; 
    DWORD       cbNeeded, cReturned, j; 
    int         i; 
 
 
    bSuccess = TRUE; 
    cbPrinters = 4096L; 
     
    if (!(gpPrinters = (PPRINTER_INFO_1)LocalAlloc((LMEM_FIXED | LMEM_ZEROINIT), 
                                                  cbPrinters))) 
    { 
        OutputDebugString( "InitPrint: LocalAlloc for gpPrinters failed."); 
        return (FALSE); 
    } 
 
    if (!EnumPrinters(PRINTER_ENUM_LOCAL|PRINTER_ENUM_CONNECTIONS, NULL, 1, (LPBYTE)gpPrinters, 
                      cbPrinters, &cbNeeded, &cReturned)) 
    { 
        if (GetLastError() == ERROR_INSUFFICIENT_BUFFER)  
        { 
            LocalFree((LOCALHANDLE)gpPrinters); 
            gpPrinters = (PPRINTER_INFO_1)LocalAlloc((LMEM_FIXED | LMEM_ZEROINIT), 
                                               cbNeeded); 
            cbPrinters = cbNeeded; 
 
            if (!EnumPrinters(PRINTER_ENUM_LOCAL|PRINTER_ENUM_CONNECTIONS, NULL, 1, (LPBYTE)gpPrinters, 
                              cbPrinters, &cbNeeded, &cReturned)) 
            { 
                MessageBox(ghwndMain,  
       GetStringRes (IDS_ERR_CANT_ENUM_PRINTERS), 
       NULL, MB_OK); 
                return (FALSE); 
            } 
 
        }  
        else  
        { 
            MessageBox(ghwndMain,  
       GetStringRes (IDS_ERR_CANT_ENUM_PRINTERS), 
   NULL, MB_OK); 
            return (FALSE); 
        } 
    } 
 
    // allocate some memory. 
 
    gpszPrinterNames = (PSZ *)LocalAlloc((LMEM_FIXED | LMEM_ZEROINIT), 
                                        cReturned * (DWORD)sizeof(PSZ)); 
 
    gpszDeviceNames = (PSZ *)LocalAlloc((LMEM_FIXED | LMEM_ZEROINIT), 
                                        cReturned * (DWORD)sizeof(PSZ)); 
 
    if (giNPrinters != 0) { 
        for (i = 0; i < giNPrinters; i++) { 
            RemoveMenu(hPrinterMenu, 3, MF_BYPOSITION); 
        } 
        giNPrinters = 0; 
    } 
 
    // insert each printer name into the menu. 
 
    j = giNPrinters = cReturned; 
    for (i = 0; i < (INT) cReturned; i++) 
    { 
        // insert into menu from bottom up. 
 
        j--;         
        InsertMenu(hPrinterMenu, 4, MF_BYCOMMAND | MF_STRING, 
                   MM_PRINTER + i, (LPSTR)gpPrinters[j].pName); 
 
        // save a list of printer names, so we can associate them 
        // with their menu indices later. 
 
        gpszPrinterNames[i] = gpPrinters[j].pName; 
        gpszDeviceNames[i] = gpPrinters[j].pDescription; 
    } 
#if 0 
    // 
    // Use this if this is called in the MDI child instead 
    // 
    DrawMenuBar(GetParent(GetParent(hwnd))); 
#endif 
    // 
    // Use this instead if this is called in InitializeApp 
    // 
    DrawMenuBar(hwnd); 
    return (bSuccess); 
} 
 
 
 
 
/******************************Public*Routine******************************\ 
* 
* bCleanupPrinter 
* 
* Effects:  Local freeing 
* 
* Warnings: globals!!! 
* 
\**************************************************************************/ 
 
BOOL bCleanupPrinter(VOID) 
{ 
    if (gpPrinters != NULL) 
        LocalFree((LOCALHANDLE)gpPrinters); 
    if (gpszPrinterNames != NULL) 
        LocalFree((LOCALHANDLE)gpszPrinterNames); 
    if (gpszDeviceNames  != NULL) 
        LocalFree((LOCALHANDLE)gpszDeviceNames); 
 
    return TRUE; 
}