Go Premium for a chance to win a PS4. Enter to Win

x
  • Status: Solved
  • Priority: Medium
  • Security: Public
  • Views: 250
  • Last Modified:

Stop, start and reume the task

in the created form there is start and stop buttons

I dont know what to do to add stop thread  and strat task in the form.

please advice

Omar fayyad

0
omarmf
Asked:
omarmf
1 Solution
 
shaneholmesCommented:
Omar, I emailed you the code.

As I stated in the last post, you need to explain you rnew posts better so as other experts have a shot at helping you solve your questions. Although, I understood (cause I have worked on it enough), a EE expert will need a full explanation.

ANyway, here is the code below for start & stop of your threads.

Shane

unit nismsn;

interface

uses
  Windows, Messages, SysUtils, Variants, Classes, Graphics, Controls, Forms,
  Dialogs, StdCtrls, ComCtrls, ExtCtrls, Buttons, ImgList, Contnrs;

type

  TXThread = class(TThread)
  private
    { Private declarations }
   fNode: TTreeNode;
   fName: String;
   fForm: TForm;
   fLabel: TLabel;
   fCount: Integer;
  protected
    procedure DoCount;
    procedure Execute; override;
  public
   property Count: Integer read fCount write fCount;
   property Name: String read fName write fName;
   property ThreadNode: TTreeNode read fNode write fNode;
   property ThreadForm: TForm read fFOrm write fForm;
   property FormLabel: TLabel read fLabel write fLabel;
   constructor Create(ANode: TTreeNode; AForm: TForm; ALabel:
                      TLabel);reintroduce;
 end;

  TForm1 = class(TForm)
    TreeView1: TTreeView;
    recieverm: TRichEdit;
    procedure FormCreate(Sender: TObject);
    procedure TreeView1DblClick(Sender: TObject);
    procedure CustomFormOnClose(Sender: TObject; var Action: TCloseAction);
    procedure FormClose(Sender: TObject; var Action: TCloseAction);
    procedure Btn1ClickEv(Sender: TObject);
    procedure Btn2ClickEv(Sender: TObject);
  private
    { Private declarations }
  public
      MsgL: TStringList;
      ThreadList: TObjectList;
  end;

var
  Form1: TForm1;

implementation

{$R *.dfm}

procedure TXThread.DoCount;
begin
 FormLabel.Caption:= inttostr(Count);
end;

procedure TXThread.Execute;
var I: Integer;
begin
  for I:= 0 to 10000 do
  begin
   Count:= I;
   Synchronize(DoCount);
   Sleep(20);
  end;
end;

constructor TXThread.Create(ANode: TTreeNode; AForm: TForm;
                            ALabel: TLabel);
begin
inherited Create(True);
 fNode:= ANode;
 fForm:= AForm;
 fLabel:= ALabel;
end;

procedure TForm1.CustomFormOnClose(Sender: TObject; var Action: TCloseAction);
Begin
  TForm(Sender).Destroy;
end;

procedure TForm1.FormCreate(Sender: TObject);
var
  TreeNodeM1, TreeNodeM2: TTreeNode;
begin
  MsgL:= TStringList.Create;
  ThreadList:= TObjectList.Create;
  ThreadList.OwnsObjects:= True;
  TreeNodeM1 := TreeView1.Items.Add(nil, 'Online');
  TreeNodeM2 := TreeView1.Items.Add(nil, 'Offline');
  TreeView1.Items.AddChild(TreeNodeM2, 'Omar');
  TreeView1.Items.AddChild(TreeNodeM1, 'Abdu');
  TreeView1.Items.AddChild(TreeNodeM1, 'Modar');
end;

procedure TForm1.Btn1ClickEv(Sender: TObject);
var
 Idx: Integer;
begin
 Idx:= TButton(Sender).Parent.Tag;
 TXThread(ThreadList[Idx]).Resume;
end;

procedure TForm1.Btn2ClickEv(Sender: TObject);
var
 Idx: Integer;
begin
 Idx:= TButton(Sender).Parent.Tag;
 TXThread(ThreadList[Idx]).Suspend;
end;

procedure TForm1.TreeView1DblClick(Sender: TObject);
var
  NewForm : TForm;
  RichEdit: TRichEdit;
    Edit  : TEdit;
  NewButton1, NewButton2: TBitBtn;
  NewLabel: TLabel;
  AThread : TXThread;
begin
  NewForm := TForm.create(Application); //*****
  with NewForm do
  begin
    Left := 100;
    Top := 200;
    Width := 250;
    Height := 350;
    Caption := TreeView1.Selected.Text;
    Name   := 'Form'+TreeView1.Selected.Text;
    OnClose := CustomFormOnClose;
    Show;
  end;
  RichEdit:= TRichEdit.Create(Self);
  with RichEdit do
  begin
    Left := 5;
    Top := 5;
    Width := 180;
    Height := NewForm.Height - 60;
    text:= '';
    Name   := 'RichEdit'+TreeView1.Selected.Text;
    parent := NewForm;
  end;
  Edit:= TEdit.Create(Self);
  with Edit do
  begin
    Left := RichEdit.Left;
    Width := RichEdit.Width;
    Height := 300;
    Top := RichEdit.Height+10;
    Name   := 'Edit'+TreeView1.Selected.Text;
    text := '';
    parent := NewForm;
  end;
  NewButton1:= TBitBtn.Create(Self);
  with NewButton1 do
  begin
    Left := edit.width + 10;
    Width := 50;
    Height := Edit.Height;
    Top := Edit.Top;
    Name   := 'BitBtn1'+TreeView1.Selected.Text;
    Caption:= 'Start';
    OnClick:= Btn1ClickEv;
    parent := NewForm;
  end;
  NewButton2:= TBitBtn.Create(Self);
  with NewButton2 do
  begin
    Left := edit.width + 10;
    Width := 50;
    Height := Edit.Height;
    Top := Edit.Top - 30;
    Name   := 'BitBtn2'+TreeView1.Selected.Text;
    Caption:= 'Stop';
    OnClick:= Btn2ClickEv;
    parent := NewForm;
  end;
  NewLabel:= TLabel.Create(Self);
  with NewLabel do
  begin
    Left := edit.width + 30;
    Width := 50;
    Height := Edit.Height;
    Top := 30;
    Name   := 'Caption'+TreeView1.Selected.Text;
    Caption:= '0';
    parent := NewForm;
  end;
  AThread:= TXThread.Create(TreeView1.Selected, NewForm, NewLabel);
  AThread.Priority:= tpNormal;
  AThread.Name:= 'Thread'+ AThread.ThreadNode.Text;
  NewForm.Tag:= ThreadList.Add(AThread); //*****
end;

procedure TForm1.FormClose(Sender: TObject; var Action: TCloseAction);
begin
 ThreadList.Free;
end;

end.
0
 
omarmfAuthor Commented:
Ok nice

  I want it to start working directly so i madeworking with for

constructor TXThread.Create(ANode: TTreeNode; AForm: TForm;
                            ALabel: TLabel);
begin
inherited Create(False);
 fNode:= ANode;
 fForm:= AForm;
 fLabel:= ALabel;
end;

It works ??

0

Featured Post

Ask an Anonymous Question!

Don't feel intimidated by what you don't know. Ask your question anonymously. It's easy! Learn more and upgrade.

Tackle projects and never again get stuck behind a technical roadblock.
Join Now