Unsolved Inject .dll into Qt and call functions

[mrjj]

Hi, just a thought
Maybe try to use findChildren and dump all ClassNames to see
how its structured.
That might give hints on what we need to target to resize.
also as @kshegunov, dump sizepol, min,max and geometry
for all Widgets owned by mainwin and childs.

[kshegunov]

@JulienMaille
Possibly, but I don't know if it'll work without the debug information. Worth a try though.

[Johannes S]

Thanks a million guys, didn't have time to look into it today, but I'll try everything out tomorrow and let you know how it worked!

[Johannes S]

Okay, I've tried to dump some info on the window. This is what I got:

Dumping window info:
Class name: TableMainWidget
Horizontal size policy: 5 Vertical size policy: 5
Minimum size: 480/340
Maximum size: 2560/1815
44 children found:

Class name: QRubberBand

Class name: QWidget
Form
Class name: TableLayoutWidget

Class name: QGraphicsView

Class name: QWidget

Class name: QScrollBar

Class name: QWidget

Class name: QScrollBar

Class name: QWidget

Class name: QWidget

Class name: QWidget
Form
Class name: CMinigamesTitleWidget

Class name: QWidget

Class name: QGraphicsView

Class name: QWidget

Class name: QScrollBar

Class name: QWidget

Class name: QScrollBar

Class name: QWidget

Class name: QWidget

Class name: QGraphicsView

Class name: QWidget

Class name: QScrollBar

Class name: QWidget

Class name: QScrollBar

Class name: QWidget

Class name: QScrollArea

Class name: QWidget
Form
Class name: CMinigamesPanelWidget

Class name: QWidget

Class name: QWebView
Betfair
Class name: QWebView

Class name: QWidget

Class name: QScrollBar

Class name: QWidget

Class name: QScrollBar

Class name: QWidget

Class name: QWidget

Class name: QWidget

Class name: QWidget

Class name: QWidget

Class name: QWidget

Class name: QWidget

Class name: QWidget

Not that helpful so far...I'm trying to get GammaRay to work.

EDIT: So, I've cloned the git repo and cmake. I've used the cmake gui to build GammaRay with the visual studio 12 compiler. Then I've opened the solution file and built it with Qt5.
For two files, I'm getting this error:

qtmain.lib(qtmain_win.obj) : error LNK2038: mismatch detected for '_MSC_VER': value '1600' doesn't match value '1800' in main.obj

The other 70 succeed. I then tried to start the gammaray.exe, but I'm getting:
error1
error2

What am I doing wrong here? Sorry that I seem to be so incompetent, I'm always struggling with this sh*t..

[JulienMaille]

@Johannes-S GammaRay needs to be compiled for exactly the Qt version you are using in the application you are debugging (and on most platforms even with the same compiler and compiler settings)

https://github.com/KDAB/GammaRay/wiki/Getting-GammaRay

[kshegunov]

@Johannes-S
Besides Gamma ray, i'd suggest focusing your investigations on CMinigamesPanelWidget subclass (possibly on Betfair as well).

[Johannes S]

@JulienMaille Yeah I figured that out, but I wasn't even able to start GammaRay without attaching it to anything...

[Johannes S]

Thank you very much, all of you who helped me here!
I finally got it to work today. It was the TableLayoutWidget, which I had tried to resize before, but I made a stupid mistake...I checked if the className was equal to "TableLayoutWidget" and resized only if it was. However, since I received the classname as a const char* the comparison to a string always failed and nothing happened...

So now all thats left to do is to find a way to easily communicate with the process to resize windows without reinjecting a .dll every time.

Thanks again!

EDIT: Do you know if there's a way to automatically subclass (SetWindowLong with a new WndProc) all windows of a process?

[kshegunov]

@Johannes-S
I'm glad it worked.

So now all thats left to do is to find a way to easily communicate with the process to resize windows without reinjecting a .dll every time.

This may not be possible, although don't hold me to that statement.

Do you know if there's a way to automatically subclass (SetWindowLong with a new WndProc) all windows of a process?

I have no clue what you're talking about, but it's probably just me. I haven't developed for Windows for quite a lot of years.

Kind regards.

[patxi]

Hi, sorry for the bump. I am upping this because I'd like to share some more thoughts about this topic with @Johannes-S. I hope I didn't break any rules.

[mrjj]

@patxi
Its quite ok
but the poster has not been online for 10 month so you might have better luck just posting a new question
regarding GammaRay and see what happens :)

[yue.feng]

@Johannes-S
hi , i use CreateRemoteThread to inject a dll into a qt application ,after QCoreApplication::instance()->installEventFilter (this);
eventFilter doesnt work... i dont know why...please help

[jsulm]

@yue-feng said in Inject .dll into Qt and call functions:

please help

How? You don't provide much information.
Did you verify that QCoreApplication::instance()->installEventFilter (this) is called?
If it is called did you do any debugging to see whether you event filter is called?

[yue.feng]

@jsulm
i tested yesterday, the reason why eventFilter doesnt work is that the ptr get from QCoreApplication::instance() is nullptr.....
i think i use QCoreApplication::instance() in a wrong place...

[jsulm]

@yue-feng said in Inject .dll into Qt and call functions:

i think i use QCoreApplication::instance() in a wrong place

Yes, looks like you use it before QCoreApplication instance is created.

[yue.feng]

@jsulm
the question is solved,Thank you very much