画像の真ん中、ストレッチと平らな店-「私は飛びたい小鳥です」という質問に答えた.
3183 ワード
問題のソース:
http://www.cnblogs.com/del/archive/2008/11/04/1326105.html#1533947
本例の効果図:
コードファイル:
フォームファイル:
http://www.cnblogs.com/del/archive/2008/11/04/1326105.html#1533947
本例の効果図:
コードファイル:
unit Unit1;
interface
uses
Windows, Messages, SysUtils, Variants, Classes, Graphics, Controls, Forms,
Dialogs, StdCtrls;
type
TForm1 = class(TForm)
Button1: TButton;
Button2: TButton;
Button3: TButton;
Button4: TButton;
procedure FormCreate(Sender: TObject);
procedure FormDestroy(Sender: TObject);
procedure Button1Click(Sender: TObject);
procedure Button2Click(Sender: TObject);
procedure Button3Click(Sender: TObject);
procedure Button4Click(Sender: TObject);
end;
var
Form1: TForm1;
implementation
{$R *.dfm}
var
bit: TBitmap;
procedure TForm1.Button1Click(Sender: TObject);
begin
Repaint;
bit.LoadFromFile('C:\Temp\Test.bmp');
Canvas.Draw(0, 0, bit);
end;
procedure TForm1.Button2Click(Sender: TObject);
var
x,y: Integer;
begin
Repaint;
x := (ClientWidth - bit.Width) div 2;
y := (ClientHeight - bit.Height) div 2;
Canvas.Draw(x, y, bit);
end;
procedure TForm1.Button3Click(Sender: TObject);
begin
Repaint;
Canvas.StretchDraw(ClientRect, bit);
end;
procedure TForm1.Button4Click(Sender: TObject);
begin
Self.Brush.Bitmap := bit;
Repaint;
Self.Brush.Bitmap := nil;
end;
procedure TForm1.FormCreate(Sender: TObject);
begin
Button1.Caption := ' ';
Button2.Caption := ' ';
Button3.Caption := ' ';
Button4.Caption := ' ';
bit := TBitmap.Create;
Self.Brush.Bitmap := nil;
end;
procedure TForm1.FormDestroy(Sender: TObject);
begin
bit.Free;
end;
end.
フォームファイル:
object Form1: TForm1
Left = 0
Top = 0
Caption = 'Form1'
ClientHeight = 231
ClientWidth = 335
Color = clBtnFace
Font.Charset = DEFAULT_CHARSET
Font.Color = clWindowText
Font.Height = -11
Font.Name = 'Tahoma'
Font.Style = []
OldCreateOrder = False
OnCreate = FormCreate
OnDestroy = FormDestroy
PixelsPerInch = 96
TextHeight = 13
object Button1: TButton
Left = 8
Top = 187
Width = 75
Height = 25
Caption = 'Button1'
TabOrder = 0
OnClick = Button1Click
end
object Button2: TButton
Left = 89
Top = 187
Width = 75
Height = 25
Caption = 'Button2'
TabOrder = 1
OnClick = Button2Click
end
object Button3: TButton
Left = 170
Top = 187
Width = 75
Height = 25
Caption = 'Button3'
TabOrder = 2
OnClick = Button3Click
end
object Button4: TButton
Left = 251
Top = 187
Width = 75
Height = 25
Caption = 'Button4'
TabOrder = 3
OnClick = Button4Click
end
end