home
***
CD-ROM
|
disk
|
FTP
|
other
***
search
/
Delphi 4 Bible
/
Delphi_4_Bible_Tom_Swan_IDG_Books_1998.iso
/
source
/
SKETCH
/
MAIN.PAS
< prev
next >
Wrap
Pascal/Delphi Source File
|
1998-04-04
|
2KB
|
83 lines
unit Main;
interface
uses
Windows, SysUtils, Messages, Classes, Graphics, Controls,
Forms, Dialogs, Menus;
type
TMainForm = class(TForm)
MainMenu1: TMainMenu;
Demo1: TMenuItem;
Erase1: TMenuItem;
Exit1: TMenuItem;
N1: TMenuItem;
procedure FormMouseDown(Sender: TObject;
Button: TMouseButton; Shift: TShiftState; X, Y: Integer);
procedure FormMouseMove(Sender: TObject;
Shift: TShiftState; X, Y: Integer);
procedure FormMouseUp(Sender: TObject;
Button: TMouseButton; Shift: TShiftState; X, Y: Integer);
procedure FormDblClick(Sender: TObject);
procedure Erase1Click(Sender: TObject);
procedure Exit1Click(Sender: TObject);
procedure FormCreate(Sender: TObject);
private
{ Private declarations }
public
{ Public declarations }
Dragging: Boolean;
end;
var
MainForm: TMainForm;
implementation
{$R *.DFM}
procedure TMainForm.FormCreate(Sender: TObject);
begin
Dragging := False;
end;
procedure TMainForm.FormMouseDown(Sender: TObject;
Button: TMouseButton; Shift: TShiftState; X, Y: Integer);
begin
Dragging := True;
Canvas.MoveTo(X, Y);
end;
procedure TMainForm.FormMouseMove(Sender: TObject;
Shift: TShiftState; X, Y: Integer);
begin
if Dragging then
Canvas.LineTo(X, Y);
end;
procedure TMainForm.FormMouseUp(Sender: TObject;
Button: TMouseButton; Shift: TShiftState; X, Y: Integer);
begin
Dragging := False;
end;
procedure TMainForm.FormDblClick(Sender: TObject);
begin
Erase1Click(Sender);
end;
procedure TMainForm.Erase1Click(Sender: TObject);
begin
Canvas.Brush := Brush; { Assign form's brush to Canvas }
Canvas.FillRect(MainForm.ClientRect); { Repaint form bkgrnd}
end;
procedure TMainForm.Exit1Click(Sender: TObject);
begin
Close;
end;
end.