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{
***************************************************************************
* *
* This source is free software; you can redistribute it and/or modify *
* it under the terms of the GNU General Public License as published by *
* the Free Software Foundation; either version 2 of the License, or *
* (at your option) any later version. *
* *
* This code is distributed in the hope that it will be useful, but *
* WITHOUT ANY WARRANTY; without even the implied warranty of *
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU *
* General Public License for more details. *
* *
* A copy of the GNU General Public License is available on the World *
* Wide Web at <http://www.gnu.org/copyleft/gpl.html>. You can also *
* obtain it by writing to the Free Software Foundation, *
* Inc., 51 Franklin Street - Fifth Floor, Boston, MA 02110-1335, USA. *
* *
***************************************************************************
}
unit SelectionForm;
interface
{$mode objfpc}{$H+}
uses
Messages, SysUtils, Classes, Graphics, Controls, Forms, Dialogs,
ControlSelection, StdCtrls, Buttons;
type
TForm1 = class(TForm)
Button1: TButton;
Button2: TButton;
Button3: TButton;
Button4: TButton;
Button5: TButton;
Button6: TButton;
Button7: TButton;
Button8: TButton;
procedure AddSelClick(Sender: TObject);
procedure Button8MouseMove(Sender: TObject; Shift: TShiftState; X, Y: Integer);
procedure Button8MouseDown(Sender: TObject; Button: TMouseButton; Shift: TShiftState; X, Y: Integer);
procedure Button8MouseUp(Sender: TObject; Button: TMouseButton; Shift: TShiftState; X, Y: Integer);
private
FSelection: TControlSelection;
FDown: Boolean;
FStart: TPoint;
procedure SelChange(Sender: TObject);
public
constructor Create(Owner: TComponent); override;
end;
var
Form1: TForm1;
implementation
constructor TForm1.Create(Owner: TComponent);
begin
inherited CreateNew(Owner, 1);
Left := 154;
Top := 117;
Width := 500;
Height := 400;
Caption := 'Selection Test';
Button1 := TButton.Create(Self);
with Button1 do
begin
Parent := Self;
Visible := True;
Left := 44;
Top := 128;
Width := 265;
Height := 25;
Caption := 'Button1';
TabOrder := 0;
OnClick := AddSelClick;
end;
Button2 := TButton.Create(Self);
with Button2 do
begin
Parent := Self;
Visible := True;
Left := 212;
Top := 184;
Width := 221;
Height := 105;
Caption := 'Button2 (Allways selected)';
TabOrder := 1;
end;
Button3 := TButton.Create(Self);
with Button3 do
begin
Parent := Self;
Visible := True;
Left := 148;
Top := 92;
Width := 75;
Height := 25;
Caption := 'Button3';
TabOrder := 2;
OnClick := AddSelClick;
end;
Button4 := TButton.Create(Self);
with Button4 do
begin
Parent := Self;
Visible := True;
Left := 264;
Top := 80;
Width := 217;
Height := 25;
Caption := 'Button4';
TabOrder := 3;
OnClick := AddSelClick;
end;
Button5 := TButton.Create(Self);
with Button5 do
begin
Parent := Self;
Visible := True;
Left := 96;
Top := 56;
Width := 75;
Height := 25;
Caption := 'Button5';
TabOrder := 4;
OnClick := AddSelClick;
end;
Button6 := TButton.Create(Self);
with Button6 do
begin
Parent := Self;
Visible := True;
Left := 112;
Top := 212;
Width := 75;
Height := 105;
Caption := 'Button6';
TabOrder := 5;
OnClick := AddSelClick;
end;
Button7 := TButton.Create(Self);
with Button7 do
begin
Parent := Self;
Visible := True;
Left := 324;
Top := 48;
Width := 75;
Height := 165;
Caption := 'Button7';
TabOrder := 6;
OnClick := AddSelClick;
end;
Button8 := TButton.Create(Self);
with Button8 do
begin
Parent := Self;
Visible := True;
Left := 32;
Top := 36;
Width := 105;
Height := 85;
Caption := 'Drag test';
TabOrder := 7;
OnMouseDown := Button8MouseDown;
OnMouseMove := Button8MouseMove;
OnMouseUp := Button8MouseUp;
end;
FDown := False;
FSelection := TControlSelection.Create(Self);
FSelection.OnChange := SelChange;
FSelection.Add(Button2);
end;
procedure TForm1.AddSelClick(Sender: TObject);
begin
if FSelection.IsSelected(TControl(Sender))
then FSelection.Remove(TControl(Sender))
else FSelection.Add(TControl(Sender));
end;
procedure TForm1.SelChange(Sender: TObject);
begin
beep;
end;
procedure TForm1.Button8MouseMove(Sender: TObject; Shift: TShiftState; X,Y: Integer);
begin
Button8.Caption := Format('X:%d, Y:%d', [X, Y]);
if FDown then
begin
Button8.Left := Button8.Left + X - FStart.X;
Button8.Top := Button8.Top + Y - FStart.Y;
end;
end;
procedure TForm1.Button8MouseDown(Sender: TObject; Button: TMouseButton; Shift: TShiftState; X, Y: Integer);
begin
FDown := True;
FStart := Point(X, Y);
end;
procedure TForm1.Button8MouseUp(Sender: TObject; Button: TMouseButton; Shift: TShiftState; X, Y: Integer);
begin
FDown := False;
end;
end.
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