Delphi设置快捷键热键演示为Ctrl+Alt+F8_delphi的快捷键怎么改-优快云博客

本文链接：https://blog.youkuaiyun.com/qq_33577118/article/details/121792678

这篇博客介绍了如何在Delphi中注册和处理热键。通过`RegisterHotKey`函数注册了Ctrl+Alt+F8的热键组合，并在`HotKeyDown`事件中检测并响应该热键，实现窗口的隐藏和显示功能。在程序关闭时，使用`UnRegisterHotKey`释放资源。

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unit Unit1;

interface

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

type
  TForm1 = class(TForm)
    procedure FormCreate(Sender: TObject);
    procedure HotKeyDown(var Msg: Tmessage); message WM_HOTKEY;
    procedure FormClose(Sender: TObject; var Action: TCloseAction);
  private
    { Private declarations }
  public
    { Public declarations }
  end;

var
  Form1: TForm1;
  HotKeyId: Integer; 
implementation

{$R *.dfm}

procedure TForm1.FormCreate(Sender: TObject);
begin
  HotKeyId := GlobalAddAtom('MyHotKey')- $C000;  //快捷键取得唯一标识ID
  RegisterHotKey(Handle, hotkeyid, MOD_ALT + MOD_CONTROL, VK_F8);
  //上面 的代码注册了一个热键：Ctrl+Alt+F8。当然如果你希望象TAKEIT那样，只用F8, 就这么写：/
  //注：handle是一个特殊的变量，它表示当前窗口的句柄。
end;


procedure TForm1.HotKeyDown(var Msg: Tmessage);
begin 
if (Msg.LparamLo = MOD_ALT + MOD_CONTROL) AND (Msg.LParamHi = VK_F8) then // 假设热键为ALT+F8
  begin
    if Form1.Visible    //判断窗口是否存在
      then  Form1.Hide
     else Form1.Show;
//   ShowMessage('热键演示为Ctrl+Alt+F8');
  end;
end; 


procedure TForm1.FormClose(Sender: TObject; var Action: TCloseAction);
begin
UnRegisterHotKey(handle, HotKeyId); //注销HotKey, 释放资源。
end;

end.