DELPHI中使用熱鍵

在windows中規定應用程序熱鍵的唯一標識符取值範圍在0x0000~0xBFFF之間，動態鏈接庫的取值範圍在0xC000~0XFFFF之間。

熱鍵的輔助按鍵還包括Mod_Ctrl,Mod_Alt和Mod_Shift，對于windows兼容鍵盤，還包括windows標志鍵，Mod_Win。

熱鍵設置成功後，在程序運行過程中如果有預定義的熱鍵被按下，windows系統都會給應用程序發送一個wm_hotkey消息。

下面用一個例子演示它的使用

編譯程序、運行，如果此程序不是當前桌面顯示在最前邊的窗體，按下ctrl+alt+a後，程序界面將出現在桌面的最上。

示例程序開發平台：D7+WINXP

轉載請注明出處。

unit Unit1;

interface

uses

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

type

TForm1 = class(TForm)

procedure FormCreate(Sender: TObject);

procedure FormClose(Sender: TObject; var Action: TCloseAction);

private

...{ Private declarations }

public

...{ Public declarations }

hotkeyid :integer; //記錄熱鍵標識

//處理wm_hotkey消息

procedure WMhotkeyhandle(var msg:Tmessage);

message wm_hotkey;

end;

var

Form1: TForm1;

implementation

...{$R *.DFM}

procedure TForm1.Wmhotkeyhandle

(var msg:Tmessage);

begin

//判斷是否是ctrl+alt+a

if (msg.LParamHi=$41) and

(msg.lparamLo=MOD_CONTROL or mod_Alt) then

begin

msg.Result:=1;//正常返回

application.BringToFront;//將窗體顯示在最前邊

end;

end;

procedure TForm1.FormCreate(Sender: TObject);

begin

//通過原子表獲得一個關于hotkey的唯一標識，注意本文前邊提到的範圍

hotkeyid:=GlobalAddAtom(pchar('UserDefineHotKey'))-$C000;

//注冊ctrl+alt+a

registerhotkey(handle,hotkeyid,MOD_CONTROL or mod_Alt,$41);

end;

procedure TForm1.FormClose(Sender: TObject; var Action: TCloseAction);

begin

unregisterhotkey(handle,hotkeyid);//

DeleteAtom(HotKeyID);

end;

end.

 

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在windows中規定應用程序熱鍵的唯一標識符取值範圍在0x0000~0xBFFF之間，動態鏈接庫的取值範圍在0xC000~0XFFFF之間。 熱鍵的輔助按鍵還包括Mod_Ctrl,Mod_Alt和Mod_Shift，對于windows兼容鍵盤，還包括windows標志鍵，Mod_Win。 熱鍵設置成功後，在程序運行過程中如果有預定義的熱鍵被按下，windows系統都會給應用程序發送一個wm_hotkey消息。 下面用一個例子演示它的使用 編譯程序、運行，如果此程序不是當前桌面顯示在最前邊的窗體，按下ctrl+alt+a後，程序界面將出現在桌面的最上。 示例程序開發平台：D7+WINXP 轉載請注明出處。 [url=/bbs/detail_501490.html][img]http://images.csdn.net/syntaxhighlighting/OutliningIndicators/None.gif[/img][/url]unit Unit1; [url=/bbs/detail_501490.html][img]http://images.csdn.net/syntaxhighlighting/OutliningIndicators/None.gif[/img][/url] [url=/bbs/detail_501490.html][img]http://images.csdn.net/syntaxhighlighting/OutliningIndicators/None.gif[/img][/url]interface [url=/bbs/detail_501490.html][img]http://images.csdn.net/syntaxhighlighting/OutliningIndicators/None.gif[/img][/url] [url=/bbs/detail_501490.html][img]http://images.csdn.net/syntaxhighlighting/OutliningIndicators/None.gif[/img][/url]uses [url=/bbs/detail_501490.html][img]http://images.csdn.net/syntaxhighlighting/OutliningIndicators/None.gif[/img][/url] Windows, Messages, SysUtils, Classes, Graphics, Controls, Forms, Dialogs; [url=/bbs/detail_501490.html][img]http://images.csdn.net/syntaxhighlighting/OutliningIndicators/None.gif[/img][/url] [url=/bbs/detail_501490.html][img]http://images.csdn.net/syntaxhighlighting/OutliningIndicators/None.gif[/img][/url]type [url=/bbs/detail_501490.html][img]http://images.csdn.net/syntaxhighlighting/OutliningIndicators/None.gif[/img][/url] TForm1 = class(TForm) [url=/bbs/detail_501490.html][img]http://images.csdn.net/syntaxhighlighting/OutliningIndicators/None.gif[/img][/url] procedure FormCreate(Sender: TObject); [url=/bbs/detail_501490.html][img]http://images.csdn.net/syntaxhighlighting/OutliningIndicators/None.gif[/img][/url] procedure FormClose(Sender: TObject; var Action: TCloseAction); [url=/bbs/detail_501490.html][img]http://images.csdn.net/syntaxhighlighting/OutliningIndicators/None.gif[/img][/url] private [url=/bbs/detail_501490.html][img]http://images.csdn.net/syntaxhighlighting/OutliningIndicators/ExpandedBlockStart.gif[/img][/url][url=/bbs/detail_501490.html][img]http://images.csdn.net/syntaxhighlighting/OutliningIndicators/ContractedBlock.gif[/img][/url] ...{ Private declarations } [url=/bbs/detail_501490.html][img]http://images.csdn.net/syntaxhighlighting/OutliningIndicators/None.gif[/img][/url] public [url=/bbs/detail_501490.html][img]http://images.csdn.net/syntaxhighlighting/OutliningIndicators/ExpandedBlockStart.gif[/img][/url][url=/bbs/detail_501490.html][img]http://images.csdn.net/syntaxhighlighting/OutliningIndicators/ContractedBlock.gif[/img][/url] ...{ Public declarations } [url=/bbs/detail_501490.html][img]http://images.csdn.net/syntaxhighlighting/OutliningIndicators/None.gif[/img][/url] hotkeyid :integer; //記錄熱鍵標識 [url=/bbs/detail_501490.html][img]http://images.csdn.net/syntaxhighlighting/OutliningIndicators/None.gif[/img][/url] //處理wm_hotkey消息 [url=/bbs/detail_501490.html][img]http://images.csdn.net/syntaxhighlighting/OutliningIndicators/None.gif[/img][/url] procedure WMhotkeyhandle(var msg:Tmessage); [url=/bbs/detail_501490.html][img]http://images.csdn.net/syntaxhighlighting/OutliningIndicators/None.gif[/img][/url] message wm_hotkey; [url=/bbs/detail_501490.html][img]http://images.csdn.net/syntaxhighlighting/OutliningIndicators/None.gif[/img][/url] [url=/bbs/detail_501490.html][img]http://images.csdn.net/syntaxhighlighting/OutliningIndicators/None.gif[/img][/url] end; [url=/bbs/detail_501490.html][img]http://images.csdn.net/syntaxhighlighting/OutliningIndicators/None.gif[/img][/url] [url=/bbs/detail_501490.html][img]http://images.csdn.net/syntaxhighlighting/OutliningIndicators/None.gif[/img][/url]var [url=/bbs/detail_501490.html][img]http://images.csdn.net/syntaxhighlighting/OutliningIndicators/None.gif[/img][/url] Form1: TForm1; [url=/bbs/detail_501490.html][img]http://images.csdn.net/syntaxhighlighting/OutliningIndicators/None.gif[/img][/url] [url=/bbs/detail_501490.html][img]http://images.csdn.net/syntaxhighlighting/OutliningIndicators/None.gif[/img][/url]implementation [url=/bbs/detail_501490.html][img]http://images.csdn.net/syntaxhighlighting/OutliningIndicators/None.gif[/img][/url] [url=/bbs/detail_501490.html][img]http://images.csdn.net/syntaxhighlighting/OutliningIndicators/ExpandedBlockStart.gif[/img][/url][url=/bbs/detail_501490.html][img]http://images.csdn.net/syntaxhighlighting/OutliningIndicators/ContractedBlock.gif[/img][/url]...{$R *.DFM} [url=/bbs/detail_501490.html][img]http://images.csdn.net/syntaxhighlighting/OutliningIndicators/None.gif[/img][/url]procedure TForm1.Wmhotkeyhandle [url=/bbs/detail_501490.html][img]http://images.csdn.net/syntaxhighlighting/OutliningIndicators/None.gif[/img][/url](var msg:Tmessage); [url=/bbs/detail_501490.html][img]http://images.csdn.net/syntaxhighlighting/OutliningIndicators/None.gif[/img][/url]begin [url=/bbs/detail_501490.html][img]http://images.csdn.net/syntaxhighlighting/OutliningIndicators/None.gif[/img][/url] //判斷是否是ctrl+alt+a [url=/bbs/detail_501490.html][img]http://images.csdn.net/syntaxhighlighting/OutliningIndicators/None.gif[/img][/url] if (msg.LParamHi=$41) and [url=/bbs/detail_501490.html][img]http://images.csdn.net/syntaxhighlighting/OutliningIndicators/None.gif[/img][/url] (msg.lparamLo=MOD_CONTROL or mod_Alt) then [url=/bbs/detail_501490.html][img]http://images.csdn.net/syntaxhighlighting/OutliningIndicators/None.gif[/img][/url] begin [url=/bbs/detail_501490.html][img]http://images.csdn.net/syntaxhighlighting/OutliningIndicators/None.gif[/img][/url] msg.Result:=1;//正常返回 [url=/bbs/detail_501490.html][img]http://images.csdn.net/syntaxhighlighting/OutliningIndicators/None.gif[/img][/url] application.BringToFront;//將窗體顯示在最前邊 [url=/bbs/detail_501490.html][img]http://images.csdn.net/syntaxhighlighting/OutliningIndicators/None.gif[/img][/url] end; [url=/bbs/detail_501490.html][img]http://images.csdn.net/syntaxhighlighting/OutliningIndicators/None.gif[/img][/url]end; [url=/bbs/detail_501490.html][img]http://images.csdn.net/syntaxhighlighting/OutliningIndicators/None.gif[/img][/url] [url=/bbs/detail_501490.html][img]http://images.csdn.net/syntaxhighlighting/OutliningIndicators/None.gif[/img][/url]procedure TForm1.FormCreate(Sender: TObject); [url=/bbs/detail_501490.html][img]http://images.csdn.net/syntaxhighlighting/OutliningIndicators/None.gif[/img][/url]begin [url=/bbs/detail_501490.html][img]http://images.csdn.net/syntaxhighlighting/OutliningIndicators/None.gif[/img][/url] //通過原子表獲得一個關于hotkey的唯一標識，注意本文前邊提到的範圍 [url=/bbs/detail_501490.html][img]http://images.csdn.net/syntaxhighlighting/OutliningIndicators/None.gif[/img][/url] hotkeyid:=GlobalAddAtom(pchar('UserDefineHotKey'))-$C000; [url=/bbs/detail_501490.html][img]http://images.csdn.net/syntaxhighlighting/OutliningIndicators/None.gif[/img][/url] //注冊ctrl+alt+a [url=/bbs/detail_501490.html][img]http://images.csdn.net/syntaxhighlighting/OutliningIndicators/None.gif[/img][/url] registerhotkey(handle,hotkeyid,MOD_CONTROL or mod_Alt,$41); [url=/bbs/detail_501490.html][img]http://images.csdn.net/syntaxhighlighting/OutliningIndicators/None.gif[/img][/url] [url=/bbs/detail_501490.html][img]http://images.csdn.net/syntaxhighlighting/OutliningIndicators/None.gif[/img][/url]end; [url=/bbs/detail_501490.html][img]http://images.csdn.net/syntaxhighlighting/OutliningIndicators/None.gif[/img][/url] [url=/bbs/detail_501490.html][img]http://images.csdn.net/syntaxhighlighting/OutliningIndicators/None.gif[/img][/url]procedure TForm1.FormClose(Sender: TObject; var Action: TCloseAction); [url=/bbs/detail_501490.html][img]http://images.csdn.net/syntaxhighlighting/OutliningIndicators/None.gif[/img][/url]begin [url=/bbs/detail_501490.html][img]http://images.csdn.net/syntaxhighlighting/OutliningIndicators/None.gif[/img][/url] unregisterhotkey(handle,hotkeyid);// [url=/bbs/detail_501490.html][img]http://images.csdn.net/syntaxhighlighting/OutliningIndicators/None.gif[/img][/url] DeleteAtom(HotKeyID); [url=/bbs/detail_501490.html][img]http://images.csdn.net/syntaxhighlighting/OutliningIndicators/None.gif[/img][/url]end; [url=/bbs/detail_501490.html][img]http://images.csdn.net/syntaxhighlighting/OutliningIndicators/None.gif[/img][/url] [url=/bbs/detail_501490.html][img]http://images.csdn.net/syntaxhighlighting/OutliningIndicators/None.gif[/img][/url]end. [url=/bbs/detail_501490.html][img]http://images.csdn.net/syntaxhighlighting/OutliningIndicators/None.gif[/img][/url]