ScrollF.pas
资源名称:delphi.rar [点击查看]
上传用户:fh681027
上传日期:2022-07-23
资源大小:1959k
文件大小:1k
源码类别:
Delphi控件源码
开发平台:
Delphi
- unit ScrollF;
- interface
- uses
- Qt, SysUtils, Classes, QGraphics, QControls, QForms, QDialogs;
- type
- TForm2 = class(TForm)
- procedure FormPaint(Sender: TObject);
- private
- { Private declarations }
- public
- { Public declarations }
- end;
- var
- Form2: TForm2;
- implementation
- {$R *.xfm}
- procedure TForm2.FormPaint(Sender: TObject);
- begin
- {draw a yellow line}
- Canvas.Pen.Width := 30;
- Canvas.Pen.Color := clYellow;
- Canvas.MoveTo (30 - HorzScrollbar.Position, 30 - VertScrollbar.Position);
- Canvas.LineTo (1970 - HorzScrollbar.Position, 1970 - VertScrollbar.Position);
- {draw a blue line}
- Canvas.Pen.Color := clNavy;
- Canvas.MoveTo (30 - HorzScrollbar.Position, 1970 - VertScrollbar.Position);
- Canvas.LineTo (1970 - HorzScrollbar.Position, 30 - VertScrollbar.Position);
- {draw a fuchsia square}
- Canvas.Pen.Color := clFuchsia;
- Canvas.Brush.Style := bsClear;
- Canvas.Rectangle (500 - HorzScrollbar.Position, 500 - VertScrollbar.Position,
- 1500 - HorzScrollbar.Position, 1500 - VertScrollbar.Position);
- end;
- end.