委托中 Not enough actual parameters 的问题
定义如下：
TMouseMoveProc = procedure(Shift: TShiftState; X, Y: Integer) of object;
procedure OnMouseMove(Shift: TShiftState; X, Y: Integer);
FMouseMoveProc: TMouseMoveProc;
出错代码如下：
FMouseMoveProc := FDrawService.OnMouseMove
出错信息：
[Error] HisView.pas(111): Not enough actual parameters

[解决办法]
sf
[解决办法]
实参不够
[解决办法]

Delphi(Pascal) code

unit Unit1;interfaceuses  Windows, Messages, SysUtils, Variants, Classes, Graphics, Controls, Forms,  Dialogs, StdCtrls;type  TMouseMoveProc = procedure(Shift: TShiftState; X, Y: Integer) of object;  TForm1 = class(TForm)    Button1: TButton;    procedure Button1Click(Sender: TObject);  private    { Private declarations }    FMouseMoveProc: TMouseMoveProc;    procedure OnMouseMove(Shift: TShiftState; X, Y: Integer);  public    { Public declarations }  end;var  Form1: TForm1;implementation{$R *.dfm}{ TForm1 }procedure TForm1.OnMouseMove(Shift: TShiftState; X, Y: Integer);beginend;procedure TForm1.Button1Click(Sender: TObject);beginFMouseMoveProc := OnMouseMove;end;end.
[解决办法]
FDrawService.OnMouseMove 是哪里来的？
[解决办法]
可能你的OnMouseMove有问题，建议改个名字试试。

unit Unit3;

interface

uses
 Classes;

type
 TMyProcedure=Procedure() of Object;
 testThread = class(TThread)
 private
   F_ProcFuncMemoryAddress:TMyProcedure;
   F_para:String;

   Procedure SetThreadFunction(_MyProcedure:TMyProcedure);
   Procedure SetPara(_Para:String);
 protected
   procedure Execute; override;
 published
   property ThreadFunction:TMyProcedure write SetThreadFunction;
   property ThreadPara:String Write SetPara;
 end;

implementation

{ testThread }

procedure testThread.Execute;
begin
 FreeOnTerminate:=true;
 Synchronize(F_ProcFuncMemoryAddress);
 //F_ProcFuncMemoryAddress(F_para);
end;

procedure testThread.SetPara(_Para: String);
begin
 F_Para:=_Para;
end;

procedure testThread.SetThreadFunction(_MyProcedure:TMyProcedure);
begin
 F_ProcFuncMemoryAddress:=_MyProcedure;
end;

end.

[解决办法]
应该这样吧

FMouseMoveProc := 接口实现 as FDrawService.OnMouseMove;
[解决办法]
用两种方法都可以.
Delphi(Pascal) code
TForm1 = class(TForm)    Button1: TButton;    procedure Button1Click(Sender: TObject);  private    { Private declarations }    FMouseMoveProc: TMouseMoveProc;  public    { Public declarations }    property MouseMoveProc: TMouseMoveProc read FMouseMoveProc write FMouseMoveProccode;  end;procedure TForm1.Button1Click(Sender: TObject);begin  //第一种方法  MouseMoveProc := FDrawService.OnMouseMove;    //第二种方法  FMouseMoveProc(FDrawService.OnMouseMove);end;