DELPHI/Часто задаваемые вопросы и ответы на них/ОС и железо

Печать всей формы

unit PrintF;

{Печатает TLabel, TEdit, TMemo, TStringGrid, TShape и др. DB-компоненты.

Установите Form H & V ScrollBar.Ranges на 768X1008 для страницы 8X10.5.
Примечание: это не компонент. Успехов. Bill}

interface
uses

  SysUtils, WinTypes, WinProcs, Classes, Graphics, Controls,
  Forms, Grids, Printers, StdCtrls, ExtCtrls, Mask;

function PrintForm(AForm: TForm; ATag: Longint): integer;

{используйте:   PrintForm(Form2, 0);

AForm - форма, которую необходимо напечатать. Если вы, к примеру,
печатаете Form2 из обработчика события Form1, то используйте Unit2
в списке используемых модулей в секции implementation молуля Unit1.
ATag - поле Tag компонента, который необходимо печатать или 0 для всех.
Если Tag компонента равен 14 (2+4+8), он буден напечатан в случае,
когда ATag равен 0, 2, 4 или 8.
Функция возвращает количество напечатанных компонентов. }

implementation
var
  ScaleX, ScaleY, I, Count: integer;

  DC: HDC;
  F: TForm;

function ScaleToPrinter(R: TRect): TRect;
begin
  R.Top := (R.Top + F.VertScrollBar.Position) * ScaleY;
  R.Left := (R.Left + F.HorzScrollBar.Position) * ScaleX;
  R.Bottom := (R.Bottom + F.VertScrollBar.Position) * ScaleY;
  R.Right := (R.Right + F.HorzScrollBar.Position) * ScaleY;
  Result := R;
end;

procedure PrintMComponent(MC: TMemo);
var
  C: array[0..255] of char;
  CLen: integer;
  Format: Word;
  R: TRect;

begin
  Printer.Canvas.Font := MC.Font;
  DC := Printer.Canvas.Handle; {так DrawText знает о шрифте}
  R := ScaleToPrinter(MC.BoundsRect);
  if (not (F.Components[I] is TCustomLabel)) and (MC.BorderStyle = bsSingle)
    then
    Printer.Canvas.Rectangle(R.Left, R.Top, R.Right, R.Bottom);
  Format := DT_LEFT;
  if (F.Components[I] is TEdit) or (F.Components[I] is TCustomMaskEdit) then
    Format := Format or DT_SINGLELINE or DT_VCENTER
  else
  begin
    if MC.WordWrap then
      Format := DT_WORDBREAK;
    if MC.Alignment = taCenter then
      Format := Format or DT_CENTER;
    if MC.Alignment = taRightJustify then
      Format := Format or DT_RIGHT;
    R.Bottom := R.Bottom + Printer.Canvas.Font.Height;
  end;
  CLen := MC.GetTextBuf(C, 255);
  R.Left := R.Left + ScaleX + ScaleX;
  WinProcs.DrawText(DC, C, CLen, R, Format);
  inc(Count);
end;

procedure PrintShape(SC: TShape);
var
  H, W, S: integer;
  R: TRect;
begin {PrintShape}
  Printer.Canvas.Pen := SC.Pen;
  Printer.Canvas.Pen.Width := Printer.Canvas.Pen.Width * ScaleX;
  Printer.Canvas.Brush := SC.Brush;
  R := ScaleToPrinter(SC.BoundsRect);
  W := R.Right - R.Left;
  H := R.Bottom - R.Top;
  if W < H then
    S := W
  else
    S := H;
  if SC.Shape in [stSquare, stRoundSquare, stCircle] then
  begin
    Inc(R.Left, (W - S) div 2);
    Inc(R.Top, (H - S) div 2);
    W := S;
    H := S;
  end;
  case SC.Shape of
    stRectangle, stSquare:
      Printer.Canvas.Rectangle(R.Left, R.Top, R.Left + W, R.Top + H);
    stRoundRect, stRoundSquare:
      Printer.Canvas.RoundRect(R.Left, R.Top, R.Left + W, R.Top + H, S div 4, S
        div 4);
    stCircle, stEllipse:
      Printer.Canvas.Ellipse(R.Left, R.Top, R.Left + W, R.Top + H);
  end;
  Printer.Canvas.Pen.Width := ScaleX;
  Printer.Canvas.Brush.Style := bsClear;
  inc(Count);
end; {PrintShape}

procedure PrintSGrid(SGC: TStringGrid);
var
  J, K: integer;
  Q, R: TRect;
  Format: Word;
  C: array[0..255] of char;
  CLen: integer;
begin
  Printer.Canvas.Font := SGC.Font;
  DC := Printer.Canvas.Handle; {так DrawText знает о шрифте}
  Format := DT_SINGLELINE or DT_VCENTER;
  Q := SGC.BoundsRect;
  Printer.Canvas.Pen.Width := SGC.GridLineWidth * ScaleX;
  for J := 0 to SGC.ColCount - 1 do
    for K := 0 to SGC.RowCount - 1 do
    begin
      R := SGC.CellRect(J, K);
      if R.Right > R.Left then
      begin
        R.Left := R.Left + Q.Left;
        R.Right := R.Right + Q.Left + SGC.GridLineWidth;
        R.Top := R.Top + Q.Top;
        R.Bottom := R.Bottom + Q.Top + SGC.GridLineWidth;
        R := ScaleToPrinter(R);
        if (J < SGC.FixedCols) or (K < SGC.FixedRows) then
          Printer.Canvas.Brush.Color := SGC.FixedColor
        else
          Printer.Canvas.Brush.Style := bsClear;
        if SGC.GridLineWidth > 0 then
          Printer.Canvas.Rectangle(R.Left, R.Top, R.Right, R.Bottom);
        StrPCopy(C, SGC.Cells[J, K]);
        R.Left := R.Left + ScaleX + ScaleX;
        WinProcs.DrawText(DC, C, StrLen(C), R, Format);

      end;
    end;
  Printer.Canvas.Pen.Width := ScaleX;
  inc(Count);
end;

function PrintForm(AForm: TForm; ATag: Longint): integer;
begin {PrintForm}

  Count := 0;
  F := AForm;
  Printer.BeginDoc;
  try
    DC := Printer.Canvas.Handle;
    ScaleX := WinProcs.GetDeviceCaps(DC, LOGPIXELSX) div F.PixelsPerInch;
    ScaleY := WinProcs.GetDeviceCaps(DC, LOGPIXELSY) div F.PixelsPerInch;
    for I := 0 to F.ComponentCount - 1 do
      if TControl(F.Components[I]).Visible then
        if (ATag = 0) or (TControl(F.Components[I]).Tag and ATag = ATag) then
        begin
          if (F.Components[I] is TCustomLabel) or (F.Components[I] is
            TCustomEdit) then
            PrintMComponent(TMemo(F.Components[I]));
          if (F.Components[I] is TShape) then
            PrintShape(TShape(F.Components[I]));
          if (F.Components[I] is TStringGrid) then
            PrintSGrid(TStringGrid(F.Components[I]));
        end;
  finally
    Printer.EndDoc;
    Result := Count;
  end;
end; {PrintForm}

end.

unit Rulers;
{ Добавьте в файл .DCR иконки для двух компонентов.

Успехов, Bill}
interface

uses

  SysUtils, WinTypes, WinProcs, Messages, Classes, Graphics, Controls,
  Forms;

type

  THRuler = class(TGraphicControl)
  private
    { Private declarations }
    fHRulerAlign: TAlign;
    procedure SetHRulerAlign(Value: TAlign);
  protected
    { Protected declarations }
    procedure Paint; override;
  public
    { Public declarations }
    constructor Create(AOwner: TComponent); override;
  published
    { Published declarations }
    property AlignHRuler: TAlign read fHRulerAlign write SetHRulerAlign default
      alNone;
    property Color default clYellow;
    property Height default 33;
    property Width default 768;
    property Visible;
  end;

type
  TVRuler = class(TGraphicControl)
  private
    { Private declarations }
    fVRulerAlign: TAlign;
    procedure SetVRulerAlign(Value: TAlign);
  protected
    { Protected declarations }
    procedure Paint; override;
  public
    { Public declarations }
    constructor Create(AOwner: TComponent); override;
  published
    { Published declarations }
    property AlignVRuler: TAlign read fVRulerAlign write SetVRulerAlign default
      alNone;
    property Color default clYellow;
    property Height default 1008;
    property Width default 33;
    property Visible;
  end;

procedure Register;

implementation

procedure Register;
begin

  RegisterComponents('Samples', [THRuler, TVRuler]);
end;

procedure THRuler.SetHRulerAlign(Value: TAlign);
begin

  if Value in [alTop, alBottom, alNone] then
  begin
    fHRulerAlign := Value;
    Align := Value;
  end;
end;

constructor THRuler.Create(AOwner: TComponent);
begin

  inherited Create(AOwner);
  AlignHRuler := alNone;
  Color := clYellow;
  Height := 33;
  Width := 768;
end;

procedure THRuler.Paint;
var
  a12th, N, X: word;
begin

  a12th := Screen.PixelsPerInch div 12;
  N := 0;
  X := 0;
  with Canvas do
  begin
    Brush.Color := Color;
    FillRect(ClientRect);
    with ClientRect do
      Rectangle(Left, Top, Right, Bottom);
    while X < Width do
    begin
      MoveTo(X, 1);
      LineTo(X, 6 * (1 + byte(N mod 3 = 0) +
        byte(N mod 6 = 0) +
        byte(N mod 12 = 0)));
      if (N > 0) and (N mod 12 = 0) then
        TextOut(PenPos.X + 3, 9, IntToStr(N div 12));
      N := N + 1;
      X := X + a12th;
    end;
  end;
end;
{*********************************************}

procedure TVRuler.SetVRulerAlign(Value: TAlign);
begin

  if Value in [alLeft, alRight, alNone] then
  begin
    fVRulerAlign := Value;
    Align := Value;
  end;
end;

constructor TVRuler.Create(AOwner: TComponent);
begin

  inherited Create(AOwner);
  AlignVRuler := alNone;
  Color := clYellow;
  Height := 1008;
  Width := 33;
end;

procedure TVRuler.Paint;
var
  a6th, N, Y: word;
begin

  a6th := Screen.PixelsPerInch div 6;
  N := 0;
  Y := 0;
  with Canvas do
  begin
    Brush.Color := Color;
    FillRect(ClientRect);
    with ClientRect do
      Rectangle(Left, Top, Right, Bottom);
    while Y < Height do
    begin
      MoveTo(1, Y);
      LineTo(6 * (2 + byte(N mod 3 = 0) +
        byte(N mod 6 = 0)), Y);
      if (N > 0) and (N mod 6 = 0) then
        TextOut(12, PenPos.Y - 16, IntToStr(N div 6));
      N := N + 1;
      Y := Y + a6th;
    end;
  end;
end;

end.

Источник получения информации: http://www.delphiworld.narod.ru