注入呼出的一件郁闷事情
这几天学习钩子注入呼出，参考各位大大的代码，左拼右凑的写了一个注入呼出，是传奇的，开始的时候呼不出，几经查找修改后，变成现在这样，在游戏里按 HOME键时，辅助窗体按着 home键时不停的闪烁，当松开home键后，窗体消失，但按一会儿后，窗体就可以正常显示了，小弟不知道那里出错了，参考别人的代码，他们却可以正常显示，现在贴出代码，希望各位帮忙看一下：
exe 代码：
unit Unit1;
interface
uses
Windows, Messages, SysUtils, Variants, Classes, Graphics, Controls, Forms,
Dialogs, StdCtrls,ExtCtrls;
type
TForm1 = class(TForm)
Button1: TButton;
Button2: TButton;
procedure FormClose(Sender: TObject; var Action: TCloseAction);
procedure Button1Click(Sender: TObject);
procedure FormCreate(Sender: TObject);
procedure Button2Click(Sender: TObject);
private
{ Private declarations }
public
{ Public declarations }
end;
var
Form1: TForm1;
function HookOn(iphwnd:HWND;iptype:LongInt):LongInt;stdcall;external 'mydll' name 'HookOn';
function HookOff:Boolean;stdcall;external 'mydll' name 'HookOff';
implementation
{$R *.dfm}
procedure TForm1.FormCreate(Sender: TObject);
var
h1:HWND;
begin
h1:=FindWindow(nil,'legend of mir2');
if h1=0 then ShowMessage('没找到游戏');
if h1>0 then Button1.Caption:='DLL注入';
Button2.Caption:='取消注入';
HookOn(h1,WH_KEYBOARD);
end;
procedure TForm1.Button1Click(Sender: TObject);
var
h1:HWND;
begin
if Button1.Caption= 'DLL注入' then
begin
Button1.Caption:='按home启动';
h1:=FindWindow(nil,'legend of mir2');
Sleep(1000);
HookOn(h1,WH_KEYBOARD);
end;
end;
procedure TForm1.Button2Click(Sender: TObject);
begin
HookOff;
Button1.Caption:='DLL注入';
end;
procedure TForm1.FormClose(Sender: TObject; var Action: TCloseAction);
begin
HookOff;
end;
end.
DLL部分：
library mydll;
{ Important note about DLL memory management: ShareMem must be the
first unit in your library's USES clause AND your project's (select
Project-View Source) USES clause if your DLL exports any procedures or
functions that pass strings as parameters or function results. This
applies to all strings passed to and from your DLL--even those that
are nested in records and classes. ShareMem is the interface unit to
the BORLNDMM.DLL shared memory manager, which must be deployed along
with your DLL. To avoid using BORLNDMM.DLL, pass string information
using PChar or ShortString parameters. }
uses
SysUtils,
Classes,
Forms,
dllform in 'dllform.pas' {Form1};
{$R *.res}
exports
hookon,hookoff;
begin
end. dll窗体部分：
unit dllform;
interface
uses
Windows, Messages, SysUtils, Variants, Classes, Graphics, Controls, Forms,
Dialogs, RzTabs,StdCtrls;
type
TForm1 = class(TForm)
RzPageControl1: TRzPageControl;
TabSheet1: TRzTabSheet;
TabSheet2: TRzTabSheet;
TabSheet3: TRzTabSheet;
private
{ Private declarations }
public
{ Public declarations }
end;
var
Form1: TForm1;
function HookProc(nCode:integer;wparam:WPARAM;lparam:LPARAM):LRESULT;stdcall;
function HookOn(IpHwnd:HWND;IpType:LongInt):LongInt;stdcall;export;
function HookOff:Boolean;stdcall;export;
implementation
var
hHk:HHOOK=0;
mhwnd:HWND=0;
bshow:Integer=1;
hThread:Cardinal;
hmod:Pointer;
hprocessid:Cardinal;
mmode:Integer;
{$R *.dfm}
{建立键盘钩子}
function HookProc(nCode:Integer;WParam: WPARAM;LParam:LPARAM):LRESULT;stdcall;
begin
//接收按键F8开始挂钩DLL
if (bShow=1) And (wParam=VK_Home) then
begin
bShow:=5;
Form1:=TForm1.Create(Application);
Form1.Show;
ShowCursor(true);
end;
if (bShow=2) And (wParam=VK_Home) then
begin
bShow:=6;
Form1.Free;
end;
if (bShow=3) And (wParam=VK_Home) then
begin
bShow:=2;
end;
if (bShow=4) And (wParam=VK_Home) then
begin
bShow:=1;
end;
if (bShow=5) then bShow:=3;
if (bShow=6) then bShow:=4;
Result := CallNextHookEx(hHk,nCode,WParam,LParam);
end;
function HookOn(iphwnd:HWND; ipType:LongInt):LongInt;stdcall;export;
begin
hThread:= GetWindowThreadProcessId(iphwnd,hmod);
hHk:=SetWindowsHookEx(iptype,@hookproc,HInstance,hthread);
result:=hHk;
end;
function HookOff:Boolean;stdcall;export;
begin
if hHk<>0 then
begin
UnhookWindowsHookEx(hHk);
hHk:=0;
Result:=True;
end else
Result:=False;
end;
end. function HookProc(nCode:Integer;WParam: WPARAM;LParam:LPARAM):LRESULT;stdcall;
begin
if (nCode = HC_ACTION) and ((lParam and $80000000) = 0) then
begin
case wParam of
VK_HOME: begin
try
if Form1 = nil then
begin
Application.Handle := GetForegroundWindow; //hwnd;
Form1 := TForm1.Create(Application);
end;
finally
if Assigned(Form1) then Form1.Visible := not Form1.Visible;
end;
end;
end;
Result := CallNextHookEx(hHk, nCode, WParam, LParam);
end; 你的代码我就不看了,头晕,我给你一个我在使用的,一切正常
library HookDll;
{ Important note about DLL memory management: ShareMem must be the
first unit in your library's USES clause AND your project's (select
Project-View Source) USES clause if your DLL exports any procedures or
functions that pass strings as parameters or function results. This
applies to all strings passed to and from your DLL--even those that
are nested in records and classes. ShareMem is the interface unit to
the BORLNDMM.DLL shared memory manager, which must be deployed along
with your DLL. To avoid using BORLNDMM.DLL, pass string information
using PChar or ShortString parameters. }
uses
Windows,
Messages,
SysUtils,
Classes,
Forms,
Variants,
uDll in 'uDll.pas' {FrmDll},
uFunc in 'uFunc.pas',
uGlobal in 'uGlobal.pas';
{$R *.res}
var
HK: HHOOK = 0;
HMod: Pointer;
ProcID: Cardinal;
//--------------------------勾子子程-----------------------------------
function HookProc(nCode: Integer; wParam: WPARAM; lParam: LPARAM): LRESULT; stdcall;
label
ToExit;
begin
if nCode < 0 then goto ToExit;
if nCode <> HC_ACTION then goto ToExit;
if (LPARAM and $80000000) = 0 then goto ToExit;
if WPARAM=VK_F12 then
begin
if FrmDll = nil then FrmDll:=TFrmDll.Create(Application);
FrmDll.Visible := not FrmDll.Visible;
end;
ToExit:
Result := CallNexthookex(HK,nCode,wparam,lparam);
end;
//--------------------------安装勾子-----------------------------------
function HookOn(AHwd: HWND): LongInt; stdcall; export;
begin
ProcID := GetWindowThreadProcessId(AHwd,HMod);
if ProcID <> 0 then HK := SetWindowsHookEx(WH_KEYBOARD,@HookProc,hinstance,ProcID);
Result := HK;
end;
//--------------------------关闭勾子-----------------------------------
function HookOff(AHHK: HHOOK): Boolean; stdcall; export;
begin
Result := False;
if AHHK <> 0 then begin
UnhookWindowsHookEx(AHHK);
Result := True;
end;
end;
procedure MyDllProc(Reason: Integer);
begin
case Reason of
DLL_PROCESS_DETACH:
begin
FreeAndNil(FrmDll);
//ShowMessage('整个DLL的善後程序');
end;
DLL_Process_Attach:
begin
//ShowMessage('整个DLL的初始化代码');
end;
DLL_Thread_Attach:
begin
//FrmDll:=TFrmDll.Create(Application);
//ShowMessage('当主叫端开始一个Thread时');
end;
DLL_Thread_Detach:
begin
//ShowMessage('当主叫端终止一个Thread时');
end;
end;
end;
exports HookOn, HookOff;
begin
//DllProc := @MyDllProc
end. 找到原因了，exe代码乱了，改为简单的，现在正常了
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