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| unit Main;
interface
uses
Windows, Messages, SysUtils, Variants, Classes, Graphics, Controls, Forms,
Dialogs, ExtCtrls, sPanel, StdCtrls, sButton, Math;
type
TForm6 = class(TForm)
fnlBG: TFlowPanel;
pnlMenu: TsPanel;
btnEdit: TsButton;
procedure FormCreate(Sender: TObject);
procedure OnFormMouseDown(Sender: TObject; Button: TMouseButton; Shift: TShiftState; X, Y: Integer);
procedure OnFormMouseMove(Sender: TObject; Shift: TShiftState; X, Y: Integer);
procedure OnFormMouseUp(Sender: TObject; Button: TMouseButton; Shift: TShiftState; X, Y: Integer);
procedure btnEditClick(Sender: TObject);
private
bEditMode, bItemSelected: Boolean;
NewPos, OldPos: TPoint;
arrForms: array of TForm;
arrButtons: array of TButton;
public
end;
const
MAX_FORM = 10;
var
Form6: TForm6;
implementation
{$R *.dfm}
procedure TForm6.FormCreate(Sender: TObject);
var
i: Integer;
begin
bEditMode := False;
bItemSelected := False;
SetLength(arrForms, MAX_FORM);
SetLength(arrButtons, MAX_FORM);
for i := 0 to MAX_FORM - 1 do
begin
arrForms[i] := TForm.Create(Self);
arrForms[i].BorderStyle := bsNone;
Randomize;
arrForms[i].Color := RGB(Random(255), Random(255), Random(255));
arrForms[i].Visible := false;
arrForms[i].AlignWithMargins := True;
arrForms[i].Caption := IntToStr(i);
arrForms[i].Parent := fnlBG;
arrForms[i].Height := 100;
case i of
0, 6:
arrForms[i].Width := 800;
1..4:
arrForms[i].Width := 400;
else
arrForms[i].Width := 200;
end;
arrButtons[i] := TButton.Create(Self);
arrButtons[i].Caption := 'Move';
arrButtons[i].Visible := False;
arrButtons[i].Parent := arrForms[i];
arrButtons[i].OnMouseDown := OnFormMouseDown;
arrButtons[i].OnMouseMove := OnFormMouseMove;
arrButtons[i].OnMouseUp := OnFormMouseUp;
end;
for i := 0 to MAX_FORM - 1 do
begin
arrForms[i].Visible := True;
arrButtons[i].Visible := True;
end;
end;
procedure TForm6.OnFormMouseDown(Sender: TObject; Button: TMouseButton; Shift: TShiftState; X, Y: Integer);
begin
bItemSelected := True;
if (Button = mbLeft) then
begin
(Sender as TButton).Parent.Parent := Self;
SetCapture((Sender as TButton).Handle);
GetCursorPos(OldPos);
end;
end;
procedure TForm6.OnFormMouseMove(Sender: TObject; Shift: TShiftState; X, Y: Integer);
begin
if not bItemSelected then
Exit;
GetCursorPos(NewPos);
(Sender as TButton).Parent.Left := (Sender as TButton).Parent.Left - OldPos.X + NewPos.X;
(Sender as TButton).Parent.Top := (Sender as TButton).Parent.Top - OldPos.Y + NewPos.Y;
OldPos := NewPos;
end;
procedure TForm6.OnFormMouseUp(Sender: TObject; Button: TMouseButton; Shift: TShiftState; X, Y: Integer);
var
TmpPos: TPoint;
AHWN: HWND;
nIdx: Integer;
begin
if not bItemSelected then
Exit;
(Sender as TButton).Parent.Parent := fnlBG;
GetCursorPos(TmpPos);
AHWN := WindowFromPoint(TmpPos);
if FindControl(AHWN) is TForm then
begin
nIdx := fnlBG.GetControlIndex(FindControl(AHWN) as TForm);
fnlBG.SetControlIndex((Sender as TButton).Parent, nIdx);
ReleaseCapture;
end;
bItemSelected := False;
end;
procedure TForm6.btnEditClick(Sender: TObject);
var
i: Integer;
begin
bEditMode := not bEditMode;
for i := 0 to MAX_FORM - 1 do
begin
if bEditMode then
arrForms[i].BorderStyle := bsToolWindow
else
arrForms[i].BorderStyle := bsNone;
end;
end;
end.
|
