delphi WinAPI: GetFocus - 获取当前拥有焦点的窗口的句柄

WinAPI: GetFocus - 获取当前拥有焦点的窗口的句柄

//声明:

GetFocus: HWND; {无参数; 返回当前拥有焦点窗口的句柄}

//举例:

unit Unit1;

interface

uses

Windows, Messages, SysUtils, Variants, Classes, Graphics, Controls, Forms,

Dialogs, StdCtrls, ExtCtrls;

type

TForm1 = class(TForm)

Button1: TButton;

Memo1: TMemo;

Edit1: TEdit;

Timer1: TTimer;

procedure Timer1Timer(Sender: TObject);

end;

var

Form1: TForm1;

implementation

{$R *.dfm}

procedure TForm1.Timer1Timer(Sender: TObject);

var

h: HWND;

begin

h := GetFocus;

Text := IntToStr(h);

end;

end.

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