PostMessage to simulate mouse input

[Anadrol]

Hello all,

Did someone manage to simulate mouse clicks in Wow with PostMessage ? (I need background mode).

Using Winspector or Spy++ I see that clicks happen in the right X Y place.

Here are the messages:

Real click:

WM_LBUTTONDOWN
Mouse coordinates: 695, 86

WM_LBUTTONDOWN
Buttons pressed: MK_LBUTTON
Mouse coordinates: 695, 86

WM_LBUTTONUP
wParam: 0x00000001
lParam: 0x005602b7

WM_LBUTTONUP
wParam: 0x00000000
lParam: 0x005602b7

False click:

WM_LBUTTONDOWN
Buttons pressed: MK_LBUTTON (this line was added)
Mouse coordinates: 695, 86

WM_LBUTTONDOWN
Buttons pressed: MK_LBUTTON
Mouse coordinates: 695, 86

WM_LBUTTONUP
wParam: 0x00000001
lParam: 0x005602b7

WM_LBUTTONUP
wParam: 0x00000001 (1 instead of 0)
lParam: 0x005602b7

I read that Wow detects false clicks and blocks them in the message queue, is that right ?

Apoc stated that WoW's MainWindowHandle is not the good one, and I need to send the move/click messages to the actual game window.
He suggested : Which requires you to enumerate over the windows for the WoW process. Use Spy++ to get the class name and parent of the draw window.

But well I did find only the GxWindowClass D3d handle.

By the way simulating keystrokes works (even though sending keydown and keyup will strangely press the key twice).

Thank you very much for your help !
Kind regards.

[Nesox]

The messagepump wow uses removes any bogus mouse message.
You could try to patch it to make it accept all messages in wow it starts at 0x007C9F80
good luck

[Anadrol]

Thx Nesox for the great advice !

I tried to NOP some JMP instructions, without success for the moment.

Anyway Wow detects at login the exe was modified, will it work if I modify the process in game with WriteProcessMemory or will Warden detect that ?

Thank you again, +rep for you

[JuJuBoSc]

+rep cause i need too

[p20ph37]

Yeah... I cannot figure it out either. I have been trying endlessly to send mouse clicks...Has there been any posts regarding this?

[Apoc]

Use SendInput instead.

[~Unknown~]

Use SendInput instead.

How can one use SendInput with WoW in background? :confused:

[dook123]

Im pretty sure you cant use sendinput for background only :S

-Duke