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Sasami
Goddess in Training
 
   
  
 
 
Since: 02-18-02
From: Back in texas! YAY! college sucked!
Rating: 10 (1030 pts)
Since last post: 7570 days
Last activity: 7570 days
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the sub hdc to display the graphics? When i was working with ragnarok, it was the one with the name "Ragnarok"
i used findwindowtext and gethdc and it gave me the right one... |
EgoFelix
 
Since: 05-08-02
Since last post: 8172 days
Last activity: 8172 days
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I changed the hole code to this now:
Hook Dll:______________
library hook;
uses
Windows, Messages, SysUtils, Variants, Classes, Graphics, Controls, Forms,
Dialogs, DIrectMemory;
var
Hookhandle: Cardinal = 0;
HookTarget: HWND;
I: Integer = 0;
function HookProc(nCode: Integer; wParam: WPARAM; lParam: LPARAM):
LRESULT; stdcall;
var
Msg: Cardinal;
MyHand: HWND;
MyDc: HDC;
MyCanvas: TCanvas;
begin
Msg := TMsg(Pointer(lParam)^).message; //find message
if Msg = WM_PAINT then begin
//Draw Test Text
MyHand := TMsg(Pointer(lParam)^).hwnd;
MyDc := GetWindowDC(MyHand);
MyCanvas := TCanvas.Create;
MyCanvas.Handle := MyDC;
BeginPath(MyCanvas.Handle);
MyCanvas.Font.Color := clRed;
MyCanvas.Font.Name := 'Courier New';
MyCanvas.Font.Size := 60;
SetBkMode(MyCanvas.Handle, TRANSPARENT);
EndPath(MyCanvas.Handle);
MyCanvas.TextOut(0, 0, 'my test text');
MyCanvas.Free;
end;
Result := CallNextHookEx(HookHandle, nCode, wParam, lParam); //Next Hook
end;
function InstallHook(HandleName: HWND): Boolean; stdcall;
begin
Result := False;
HookTarget := HandleName;
if HookHandle = 0 then begin
HookHandle := SetWindowsHookEx(WH_GETMESSAGE, @HookProc, HInstance, GetWindowThreadProcessId(HookTarget)); //install specified hook
Result := TRUE;
end;
end;
function UninstallHook: Boolean; stdcall;
begin
Result := UnhookWindowsHookEx(HookHandle); //Delete Hook
HookHandle := 0;
end;
exports
InstallHook,
UninstallHook;
end.
HookHandle := SetWindowsHookEx(WH_GETMESSAGE, @HookProc, HInstance, GetWindowThreadProcessId(HookTarget)); //install specified hook
Code From Main Application:______________
unit Unit1;
interface
uses
Windows, Messages, SysUtils, Classes, Graphics, Controls, Forms, Dialogs,
StdCtrls, DirectMemory;
type
TForm1 = class(TForm)
Button1: TButton;
Button2: TButton;
procedure Button1Click(Sender: TObject);
procedure Button2Click(Sender: TObject);
private
{ Private declarations }
public
{ Public declarations }
end;
var
Form1: TForm1;
implementation
//Implant the dll...
function InstallHook(HandleName: HWND): Boolean; stdcall; external 'hook.dll';
function UninstallHook: Boolean; stdcall; external 'hook.dll';
{$R *.DFM}
//install hook
procedure TForm1.Button1Click(Sender: TObject);
begin
if installhook(FindwindowByTitle(PCHAR('Ragnarok'))) then begin
Button2.Enabled:=True;
Button1.Enabled:=False;
end;
end;
//deinstall hook
procedure TForm1.Button2Click(Sender: TObject);
begin
if uninstallhook then begin
Button1.Enabled:=True;
Button2.Enabled:=False;
end;
end;
end.
Comment:______________
This Installs the hook just for the RO HWND... But the problem is, that the directX is painted in a sub-hdc... How can i find that? All would work, but i cant find that HDC Plz help
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Sasami
Goddess in Training
Since: 02-18-02
From: Back in texas! YAY! college sucked!
Rating: 10 (1030 pts)
Since last post: 7570 days
Last activity: 7570 days
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I spent quite a long time searching for the answer to that when I had the same problem, and never found it.  |
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