Печатаем миллиметровку.
Использует Printers.Printer и преобразование миллиметров в пиксели средствами windows.
program PrnGrid;
uses
Dialogs,
Printers,
Windows,
Types;
{$R *.res}
function GetPenWidth(I: Integer): Integer;
begin
if I mod 100 = 0 then
Result := 45
else if I mod 50 = 0 then
Result := 30
else if I mod 10 = 0 then
Result := 20
else if I mod 5 = 0 then
Result := 15
else
Result := 10;
end;
var
PageRect: TRect;
I, J: Integer;
begin
with TPrintDialog.Create(nil) do
try
if not Execute then
Exit;
finally
Free;
end;
PageRect := Rect(0, 0, Printer.PageWidth, Printer.PageHeight);
Printer.Title := 'Милиметровка'; Printer.BeginDoc;
try
try
with Printer.Canvas do
begin
SetMapMode(Handle, MM_HIMETRIC);
DPtoLP(Handle, PageRect, 2);
with PageRect do
begin
Inc(Left, 1000);
Dec(Top, 1000);
Dec(Right, 1000);
Inc(Bottom, 1000);
end;
J := 0;
I := PageRect.Left;
while I < PageRect.Right do
begin
Pen.Width := GetPenWidth(J);
MoveTo(I, PageRect.Top);
LineTo(I, PageRect.Bottom);
Inc(I, 100);
Inc(J);
end;
J := 0;
I := PageRect.Top;
while I > PageRect.Bottom do
begin
Pen.Width := GetPenWidth(J);
MoveTo(PageRect.Left, I);
LineTo(PageRect.Right, I);
Dec(I, 100);
Inc(J);
end;
end;
except
Printer.Abort;
raise;
end;
finally
Printer.EndDoc;
end;
end. |
