Delphi设置系统默认打印机-创新互联
获取默认打印机名:

function TForm1.GetDefaultPrinterName: string;
var
iSize: Integer;
sIniFile, sSection, sKeyName: PChar;
begin
iSize := 256;
sIniFile := 'win.ini';
sSection := 'windows';
sKeyName := 'device';
SetLength(Result, iSize);
GetPrivateProfileString(sSection, sKeyName, nil, PChar(Result), iSize, sIniFile);
Result := Copy(Result, 0, Pos(',', Result) - 1);
end;更改默认打印机:需要Uses WinSpool
procedure ChangeDefaultPrinter(const Name: string); var W2KSDP: function(pszPrinter: PChar): Boolean; stdcall; H: THandle; Size, Dummy: Cardinal; PI: PPrinterInfo2; begin if (Win32Platform = VER_PLATFORM_WIN32_NT) and (Win32MajorVersion >= 5) then begin @W2KSDP := GetProcAddress(GetModuleHandle(winspl), 'SetDefaultPrinterA'); if @W2KSDP = nil then RaiseLastOSError; if not W2KSDP(PChar(Name)) then RaiseLastOSError; end else begin if not OpenPrinter(PChar(Name), H, nil) then RaiseLastOSError; try GetPrinter(H, 2, nil, 0, @Size); if GetLastError <> ERROR_INSUFFICIENT_BUFFER then RaiseLastOSError; GetMem(PI, Size); try if not GetPrinter(H, 2, PI, Size, @Dummy) then RaiseLastOSError; PI^.Attributes := PI^.Attributes or PRINTER_ATTRIBUTE_DEFAULT; if not SetPrinter(H, 2, PI, PRINTER_CONTROL_SET_STATUS) then RaiseLastOSError; finally FreeMem(PI); end; finally ClosePrinter(H); end; end; end; //ChangeDefaultPrinter
ChangeDefaultPrinter函数 在D7下使用SetDefaultPrinterA,在Delphi2010以上版本使用SetDefaultPrinterW
procedure TDM.ChangeDefaultPrinter(const Name: string);
var
Device: array[0..255] of Char;
Driver: array[0..255] of char;
Port: array[0..255] of char;
s : array[0..255] of Char;
hDeviceMode: THandle;
I: Integer;
begin
for I := 0 to Printer.Printers.Count - 1 do
if Printer.Printers.Strings[I] = name then
begin
Printer.PrinterIndex := I;
Break;
end;
Printer.GetPrinter (Device, Driver, Port, hDeviceMode);
StrCopy (s, Device);
StrCat (s, ',');
StrCat (s, Driver);
StrCat (s, ',');
StrCat (s, Port);
WriteProfileString ('windows', 'device', s);
StrCopy (s, 'windows');
SendMessage (HWND_BROADCAST, WM_WININICHANGE, 0, LongInt(@s));
end;//这个函数也可以更改打印机,效果没有上面的好另外有需要云服务器可以了解下创新互联scvps.cn,海内外云服务器15元起步,三天无理由+7*72小时售后在线,公司持有idc许可证,提供“云服务器、裸金属服务器、高防服务器、香港服务器、美国服务器、虚拟主机、免备案服务器”等云主机租用服务以及企业上云的综合解决方案,具有“安全稳定、简单易用、服务可用性高、性价比高”等特点与优势,专为企业上云打造定制,能够满足用户丰富、多元化的应用场景需求。
当前题目:Delphi设置系统默认打印机-创新互联
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