HDC GetPrinterDC (void)
{
DWORD dwNeeded, dwReturned ;
HDC hdc ;
PRINTER_INFO_4 * pinfo4 ;
PRINTER_INFO_5 * pinfo5 ; if (GetVersion () & 0x80000000) // Windows 98
{
EnumPrinters (PRINTER_ENUM_DEFAULT, NULL, 5, NULL,
0, &dwNeeded, &dwReturned) ;
pinfo5 = malloc (dwNeeded) ;
EnumPrinters (PRINTER_ENUM_DEFAULT, NULL, 5, (PBYTE) pinfo5,
dwNeeded, &dwNeeded, &dwReturned) ;
hdc = CreateDC (NULL, pinfo5->pPrinterName, NULL, NULL) ;
free (pinfo5) ;
}
else
//Windows NT
{
EnumPrinters (PRINTER_ENUM_LOCAL, NULL, 4, NULL,
0, &dwNeeded, &dwReturned) ;
pinfo4 = malloc (dwNeeded) ;
EnumPrinters (PRINTER_ENUM_LOCAL, NULL, 4, (PBYTE) pinfo4,
dwNeeded, &dwNeeded, &dwReturned) ;
hdc = CreateDC (NULL, pinfo4->pPrinterName, NULL, NULL) ;
free (pinfo4) ;
}
return hdc ;
}
{
DWORD dwNeeded, dwReturned ;
HDC hdc ;
PRINTER_INFO_4 * pinfo4 ;
PRINTER_INFO_5 * pinfo5 ; if (GetVersion () & 0x80000000) // Windows 98
{
EnumPrinters (PRINTER_ENUM_DEFAULT, NULL, 5, NULL,
0, &dwNeeded, &dwReturned) ;
pinfo5 = malloc (dwNeeded) ;
EnumPrinters (PRINTER_ENUM_DEFAULT, NULL, 5, (PBYTE) pinfo5,
dwNeeded, &dwNeeded, &dwReturned) ;
hdc = CreateDC (NULL, pinfo5->pPrinterName, NULL, NULL) ;
free (pinfo5) ;
}
else
//Windows NT
{
EnumPrinters (PRINTER_ENUM_LOCAL, NULL, 4, NULL,
0, &dwNeeded, &dwReturned) ;
pinfo4 = malloc (dwNeeded) ;
EnumPrinters (PRINTER_ENUM_LOCAL, NULL, 4, (PBYTE) pinfo4,
dwNeeded, &dwNeeded, &dwReturned) ;
hdc = CreateDC (NULL, pinfo4->pPrinterName, NULL, NULL) ;
free (pinfo4) ;
}
return hdc ;
}
好像编译没什么问题
其实很多工作priters里已经做了。
use winspool;function getprtDc: integer;
var
dwNeeded, dwReturned: DWORD;
hdc1: HDC;
pinfo4: PPrinterInfo4;
pinfo5: PPRINTERINFO5;
begin
if (GetVersion() and $80000000) = 0 then // Windows 98
begin
EnumPrinters(PRINTER_ENUM_DEFAULT, nil, 5, nil,
0, dwNeeded, dwReturned);
GetMem(pinfo5, dwNeeded);
EnumPrinters(PRINTER_ENUM_DEFAULT, nil, 5, pinfo5,
dwNeeded, dwNeeded, dwReturned);
hdc1 := CreateDC(nil, pinfo5^.pPrinterName, nil, nil);
freemem(pinfo5);
end
else
//Windows NT
begin
EnumPrinters(PRINTER_ENUM_LOCAL, nil, 4, nil,
0, dwNeeded, dwReturned);
getmem(pinfo4, dwNeeded);
EnumPrinters(PRINTER_ENUM_LOCAL, nil, 4, pinfo4,
dwNeeded, dwNeeded, dwReturned);
hdc1 := CreateDC(nil, pinfo4^.pPrinterName, nil, nil);
freemem(pinfo4);
end;
Result := hdc1;end;