Delphi 与 DirectX 之 DelphiX(91): TDIB.DrawMono();

本例效果图:

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代码文件:

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unit Unit1;

interface

uses
  Windows, Messages, SysUtils, Variants, Classes, Graphics, Controls, Forms,
  Dialogs, DIB, StdCtrls;

type
  TForm1 = class(TForm)
    DXPaintBox1: TDXPaintBox;
    Button1: TButton;
    procedure Button1Click(Sender: TObject);
    procedure FormCreate(Sender: TObject);
  end;

var
  Form1: TForm1;

implementation

{$R *.dfm}

const
  c1 = clBlack;
  c2 = clLime;
var
  w,h: Integer;

procedure TForm1.FormCreate(Sender: TObject);
begin
  w := DXPaintBox1.ClientWidth;
  h := DXPaintBox1.ClientHeight;
  DXPaintBox1.DIB.SetSize(w, h, 24);
  DXPaintBox1.DIB.Fill(c1);
  DXPaintBox1.DIB.Canvas.Brush.Style := bsClear;
  DXPaintBox1.DIB.Canvas.Font.Color := c2;
  DXPaintBox1.DIB.Canvas.Font.Name := 'Arial Black';
  DXPaintBox1.DIB.Canvas.Font.Size := 36;
  DXPaintBox1.DIB.Canvas.Font.Style := [fsBold];
  DXPaintBox1.DIB.Canvas.TextOut(20, 10, 'DelphiX');
  DXPaintBox1.Repaint;
end;

procedure TForm1.Button1Click(Sender: TObject);
begin
  DXPaintBox1.DIB.DrawMono(DXPaintBox1.DIB, 0, 0, w, h, 0, 0, c1, c1, c2);
  DXPaintBox1.Repaint;
end;

end.

窗体文件:

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object Form1: TForm1
  Left = 0
  Top = 0
  Caption = 'Form1'
  ClientHeight = 134
  ClientWidth = 273
  Color = clBtnFace
  Font.Charset = DEFAULT_CHARSET
  Font.Color = clWindowText
  Font.Height = -11
  Font.Name = 'Tahoma'
  Font.Style = []
  OldCreateOrder = False
  OnCreate = FormCreate
  PixelsPerInch = 96
  TextHeight = 13
  object DXPaintBox1: TDXPaintBox
    Left = 8
    Top = 8
    Width = 257
    Height = 89
    AutoStretch = False
    Center = False
    KeepAspect = False
    Stretch = False
    ViewWidth = 0
    ViewHeight = 0
  end
  object Button1: TButton
    Left = 190
    Top = 103
    Width = 75
    Height = 25
    Caption = 'Button1'
    TabOrder = 0
    OnClick = Button1Click
  end
end