Использование ловушек, блокировка мышки, клавиатуры и т.д.

Code:

library Project2;

Uses Windows,Messages;

Var SysHook:HHook=0;

Function SysMsgProc(Code:Integer; WParam:LongInt; LParam:LongInt):LongInt; stdcall;

Var Msg:TMessage;

Begin

IF Code=HC_ACTION then

Case TMsg(Pointer(LParam)^).Message OF

  WM_RBUTTONDOWN,WM_RBUTTONUP,WM_RBUTTONDBLCLK: TMsg(Pointer(LParam)^).Message:=WM_NULL

  else Result:=CallNextHookEx(SysHook,Code,WParam,LParam);

End;

end;

procedure Hook(Flag:Boolean); export; stdcall;

Begin

IF Flag then SysHook:=SetWindowsHookEx(WH_GETMESSAGE,@SysMsgProc,HInstance,0) Else

Begin

  UnhookWindowsHookEx(SysHook);

  SysHook:=0;

End;

End;

exports Hook;

{$R *.res}

begin

end.

Code:

unit Unit1;

interface

uses

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

Dialogs, Menus, StdCtrls;

type

MyProcType = procedure (Flag: Boolean); stdcall;

type

TForm1 = class(TForm)

   Button1: TButton;

   Button2: TButton;

   procedure FormMouseDown(Sender: TObject; Button: TMouseButton;

     Shift: TShiftState; X, Y: Integer);

   procedure Button1Click(Sender: TObject);

   procedure Button2Click(Sender: TObject);

   procedure FormDestroy(Sender: TObject);

private

   { Private declarations }

public

   { Public declarations }

end;

var

Form1: TForm1;

HDLL:HWND;

implementation

{$R *.dfm}

procedure TForm1.FormMouseDown(Sender: TObject; Button: TMouseButton;

Shift: TShiftState; X, Y: Integer);

begin

IF Button=mbRight then ShowMessage('Right mouse key pressed');

end;

procedure TForm1.Button1Click(Sender: TObject);

Var Hook: MyProcType;

Begin

@Hook:=nil;

HDLL:=LoadLibrary(PChar('project2.dll'));

IF HDLL>HINSTANCE_ERROR then          

Begin

  @Hook:=GetProcAddress(HDLL,'Hook'); 

  Hook(True);

End else MessageDlg('Ошибка загрузки DLL.',mtError,[mbIgnore],0);

end;

procedure TForm1.Button2Click(Sender: TObject);

Var Hook: MyProcType;

Begin

@Hook:=nil;

IF HDLL>HINSTANCE_ERROR then

Begin                                  

  @Hook:=GetProcAddress(HDLL,'Hook'); 

  Hook(False);                       

End;

End;

procedure TForm1.FormDestroy(Sender: TObject);

begin

Button2.Click;

end;

end.

Code:

type

TForm1 = class(TForm)

   procedure FormCreate(Sender: TObject);

   procedure FormDestroy(Sender: TObject);

protected

   procedure hotykey(var msg: TMessage); message WM_HOTKEY;

end;

var

Form1: TForm1;

id, id2: Integer;

implementation

{$R *.DFM}

procedure TForm1.hotykey(var msg: TMessage);

begin

if (msg.LParamLo = MOD_CONTROL) and (msg.LParamHi = 81) then

   begin

     ShowMessage('Ctrl + Q wurde gedrьckt !');

   end;

if (msg.LParamLo = MOD_CONTROL) and (msg.LParamHi = 82) then

   begin

     ShowMessage('Ctrl + R wurde gedrьckt !');

   end;

end;

procedure TForm1.FormCreate(Sender: TObject);

begin

id := GlobalAddAtom('hotkey');

RegisterHotKey(handle, id, mod_control, 81);

id2 := GlobalAddAtom('hotkey2');

RegisterHotKey(handle, id2, mod_control, 82);

end;

procedure TForm1.FormDestroy(Sender: TObject);

begin

UnRegisterHotKey(handle, id);

UnRegisterHotKey(handle, id2);

end;