TPrinter
http://www.delphibbs.com/delphibbs/dispq.asp?LID=1876989
Example:
unit multiprn;
interface
{$ IFDEF WIN32}
uses
Windows, Messages, SysUtils, Classes, Graphics, Controls,
Forms, Dialogs, StdCtrls;
{$ ELSE}
uses
SysUtils, WinTypes, WinProcs, Messages, Classes, Graphics,
Controls, Forms, Dialogs, StdCtrls;
{$ ENDIF}
type
TForm1 = class(TForm)
Button1: TButton;
ListBox1: TListBox;
ListBox2: TListBox;
ListBox3: TListBox;
procedure FormCreate(Sender: TObject);
procedure ListBox1Click(Sender: TObject);
procedure ListBox2Click(Sender: TObject);
procedure ListBox3Click(Sender: TObject);
procedure Button1Click(Sender: TObject);
private
{ Private declarations }
procedure GetTheListOfPrinters;
public
{ Public declarations }
end;
var
Form1: TForm1;
implementation
{$ R *.DFM}
type
PdcArray = ^TdcArray;
TdcArray = array[0..0] of hdc;
procedure TForm1.GetTheListOfPrinters;
var
p : pChar;
p2 : pChar;
i : integer;
sDriver : string;
sPort : string;
begin
GetMem(p, 32767);
p2 := p;
{Get a list of the printer names from the win.ini file.}
{The list will be a buffer filled with strings, each seperated}
{by a null character, with the final string terminated with}
{a two null characters}
if GetProfileString('devices', nil, '',p, 32767) <> 0 then begin
{loop though the null terminated strings. We know we}
{have reached the end when p2 equals a null character}
while p2^ <> #0 do begin
ListBox1.Items.Add(StrPas(p2));
{increment the pointer past the null to get the next string}
p2 := @p2[lStrLen(p2) + 1];
end;
end;
GetMem(p2, 32767);
{Get the driver and port names for each printer found}
for i := 0 to (ListBox1.Items.Count - 1) do begin
StrPCopy(p2, ListBox1.Items[i]);
if GetProfileString('devices', p2, '',p, 32767) <> 0 then begin
sDriver := StrPas(p);
sPort := sDriver;
{The driver is the portion of the string before the comma}
Delete(sDriver, Pos(',', sDriver), Length(sDriver));
{The port is the portion of the string after the comma}
Delete(sPort, 1, Pos(',', sPort));
ListBox2.Items.Add(sDriver);
ListBox3.Items.Add(sPort);
end;
end;
FreeMem(p2, 32767);
FreeMem(p, 32767);
end;
procedure TForm1.FormCreate(Sender: TObject);
begin
GetTheListOfPrinters;
{Allow the user to select multiple printers}
ListBox1.MultiSelect := true;
ListBox2.MultiSelect := true;
ListBox3.MultiSelect := true;
end;
procedure TForm1.ListBox1Click(Sender: TObject);
var
i : integer;
begin
{Select same indexes in ListBoxs 2 and 3 as are selected in Listbox1}
for i := 0 to ListBox1.Items.Count - 1 do begin
ListBox2.Selected[i] := ListBox1.Selected[i];
ListBox3.Selected[i] := ListBox1.Selected[i]
end;
end;
procedure TForm1.ListBox2Click(Sender: TObject);
var
i : integer;
begin
{Select same indexes in ListBoxs 1 and 3 as are selected in Listbox2}
for i := 0 to ListBox2.Items.Count - 1 do begin
ListBox1.Selected[i] := ListBox2.Selected[i];
ListBox3.Selected[i] := ListBox2.Selected[i]
end;
end;
procedure TForm1.ListBox3Click(Sender: TObject);
var
i : integer;
begin
{Select same indexes in ListBoxs 1 and 2 as are selected in Listbox3}
for i := 0 to ListBox3.Items.Count - 1 do begin
ListBox1.Selected[i] := ListBox3.Selected[i];
ListBox2.Selected[i] := ListBox3.Selected[i]
end;
end;
procedure TForm1.Button1Click(Sender: TObject);
var
dcs : PdcArray; {a pointer to an array of hdc's}
dcsCount : integer; {count of valad hdc's}
dc : hdc; {test hdc}
i : integer; {couning variable}
pPrinter : pChar; {pointer to a printer name}
pDriver : pChar; {pointer to a printer driver filename}
pPort : pChar; {pointer to a port}
DocInfo: TDocInfo; {document information for the spooler}
{$ IFDEF WIN32}
osv : TOSVERSIONINFO; {to test for Windows NT}
{$ ENDIF}
begin
{If there are no printers selected then exit}
if ListBox1.SelCount = 0 then exit;
{If Range Checking is on then rember the setting and turn it off}
{This will allow use to access the dcs[i] array past element zero}
{without a compiler or runtime error}
{$ IFOPT R+}
{$ DEFINE CKRANGE}
{$ R-}
{$ ENDIF}
{Allocate the array of dcs}
GetMem(dcs, sizeof(hdc) * ListBox1.SelCount);
dcsCount := 0;
{Loop though the printers that are selected and create dc's for each}
for i := 0 to (ListBox1.Items.Count - 1) do begin
{Loop through the list box to find the selected printers}
if ListBox1.Selected[i] then begin
{Allocate and get the Printer, Driver and port from the listboxs}
{in the form of a null terminated string}
GetMem(pPrinter, Length(ListBox1.Items[i]) + 1);
GetMem(pDriver, Length(ListBox2.Items[i]) + 1);
GetMem(pPort, Length(ListBox3.Items[i]) + 1);
StrPCopy(pPrinter, ListBox1.Items[i]);
StrPCopy(pDriver, ListBox2.Items[i]);
StrPCopy(pPort, ListBox3.Items[i]);
{Attempt to create a dc - notes 1) Not all printers can}
{support multiple dc's at one time. 2) CreateDc requires}
{different parameters if Win32 andor Win32 under NT.}
{Sixteen bit win apps get standard handling}
{$ IFDEF WIN32}
GetVersionEx(osv);
if osv.dwPlatformId = VER_PLATFORM_WIN32_NT then
dc := CreateDc(pDriver, pPrinter, nil, nil) else
dc := CreateDc(nil, pPrinter, nil, nil);
{$ ELSE}
dc := CreateDc(pDriver, pPrinter, pPort, nil);
{$ ENDIF}
FreeMem(pPrinter, Length(ListBox1.Items[i]));
FreeMem(pDriver, Length(ListBox2.Items[i]));
FreeMem(pPort, Length(ListBox3.Items[i]));
{If the dc is valid, then lets save it to our array}
{and increment our count}
if dc <> 0 then begin
dcs^[dcsCount] := dc;
inc(dcsCOunt);
end;
end;
end;
{If we ended up with a valid array of dc's then let's print}
if dcsCount > 0 then begin
{Fill Out the DocInfo structure for the spooler}
{and start a document for each printer}
GetMem(DocInfo.lpszDocName, 32);
for i := 0 to (dcsCount - 1) do begin
FillChar(DocInfo, sizeof(DocInfo), #0);
DocInfo.cbSize := SizeOf(DocInfo);
StrPCopy(DocInfo.lpszDocName, 'Test Doc' + IntToStr(i));
StartDoc(dcs^[i], DocInfo);
end;
FreeMem(DocInfo.lpszDocName, 32);
{Start a page for each printer}
for i := 0 to (dcsCount - 1) do
StartPage(dcs^[i]);
{Print something}
for i := 0 to (dcsCount - 1) do
TextOut(dcs^[i], 200, 200, 'Test', 4);
{End a page for each printer}
for i := 0 to (dcsCount - 1) do
EndPage(dcs^[i]);
{End the document for each printer}
for i := 0 to (dcsCount - 1) do
EndDoc(dcs^[i]);
{Delete the dc for each printer}
for i := 0 to (dcsCount - 1) do
DeleteDc(dcs^[i]);
end; {dcsCount}
{Free our array of printers}
FreeMem(dcs, sizeof(hdc) * ListBox1.SelCount);
{If range checking was on when we started then turn it back on}
{$ IFDEF CKRANGE}
{$ UNDEF CKRANGE}
{$ R+}
{$ ENDIF}
end;
end.
Api函数列表
--与打印相关
Api函数名 函数说明 适用范围
W3.x W95 NT
AddPrinterConnection 为当前用户建立与打印机的联系 否 是 是
StartPagePrinter 开始打印机 否 是 是
StartDoc 开始打印作业 是 是 是
StartDocPrinter 开始打印作业 否 是 是
AddPrintProvidor 加入一个打印机支持器 否 是 是
AddForm 加入一个打印机窗体 否 是 是
AddPort 加入一个打印机端口 否 是 是
AddMonitor 加入一个打印机管理器 否 是 是
ShellExecute 打开或打印指定文件 否 是 是
ClosePrinter 关闭打开的打印机 否 是 是
WritePrinter 向打印机输出数据 否 是 是
AddPrinter 在打印机服务器上建立一个打印机 否 是 是
SetAbortProc 设备打印作业的放弃函数 否 是 是
SetPrinter 设置打印机信息 否 是 是
SetPrinterData 设置打印机配置 否 是 是
SetJob 设置打印作业信息 否 是 是
ResetPrinter 设置打印数据类型和设备模式值 否 是 是
DeletePrinterConnection 删除与打印机的连接 否 是 是
DeletePrintProcessor 删除打印机处理器 否 是 是
DeletePrinterDriver 删除打印机驱动程序 否 是 是
DeletePrinter 删除打印机服务器上的打印机 否 是 是
DeleteMonitor 删除打印机监视器 否 是 是
DeletePrintProvidor 删除打印机提供者 否 是 是
DeleteForm 删除打印机窗体层差 否 是 是
AbortPrinter 删除打印机缓冲文件 否 是 是
DeletePort 删除打印机端口 否 是 是
AddJob 启动一个打印作业 否 是 是
AdvancedDocumentProperties 进行打印机高级设置 否 是 是
PrintDlg 建立打印文本对话框 否 是 是
EnumPrintProcessors 枚举已安装的打印机处理器 否 是 是
EnumPrinterDrivers 枚举已安装的打印机驱动程序 否 是 是
EnumPorts 枚举可用打印机端口 否 是 是
EnumPrintProcessorDatatypes 枚举打印机所支持的数据类型 否 是 是
EnumForms 枚举所支持的打印机窗体 否 是 是
AbortDoc 终止一项打印作业 是 是 是
PrinterProperties 修改打印机属性 否 是 是
AddPrintProcessor 将打印处理器复制到打印机服务器中 否 是 是
AddPrinterDriver 将打印机驱动程序复制到打印机服务器中 否 是 是
PrinterMessageBox 显示打印作业出错信息 否 是 是
ConnectToPrinterDlg 显示浏览对话并连接网络打印机 否 是 是
EndPagePrinter 结束打印页 否 是 是
EndDoc 结束打印作业 是 是 是
EndDocPrinter 结束打印作业 否 是 是
StartPage 准备打印机接收数据 是 是 是
WaitForPrinterChange 监测打印机或打印机服务器变化 否 是 是
GetPrintProcessorDirectory 获取打印机驱动处理器路径 否 是 是
GetPrinterDriver 获取打印机驱动程序信息 否 是 是
GetPrinterDriverDirectory 获取打印机驱动程序路径 否 是 是
GetPrinter 获取打印机信息 否 是 是
