为什么简单的多线程会抛出EAccessViolation错误呢?
就一个很简单的多线程例子

调用类:
unit Unit1;

interface

uses
Windows, Messages, SysUtils, Variants, Classes, Graphics, Controls, Forms,
Dialogs, StdCtrls,uMyThread;

type
TForm1 = class(TForm)
Button1: TButton;
procedure Button1Click(Sender: TObject);
private
{ Private declarations }
public
myThread:MyThread;
end;

var
Form1: TForm1;



implementation

{$R *.dfm}

procedure TForm1.Button1Click(Sender: TObject);
begin
myThread:=MyThread.Create(true);
myThread.Resume;
end;

end.


线程:
unit uMyThread;

interface

uses
Classes;

type
MyThread = class(TThread)
private
protected
procedure Execute; override;
end;

implementation



procedure MyThread.Execute;
var
i:Integer;
begin
inc(i)
end;

end.





[解决办法]
看你定义的，变量跟类都一样...

public
myThread:MyThread;
end;
[解决办法]
procedure MyThread.Execute;
var
i:Integer;
begin
inc(i)
end;

这个一般没问题，不过还是得这样：
procedure MyThread.Execute;
var
i:Integer;
begin
i:=0;
inc(i)
end;