C / C++ / MFC

Problem Exporting the Modal Dialog from a Regular MFC DLL

13-Jul-04 1:58

Buddy,
add ON_WM_SCROLL message In your application.
or see my application shutdown timer,i have used slider ctrl in that->
http://www.codeproject.com/useritems/ShutDownAlarm.asp

-----------------------------
"I Think It will Work"
-----------------------------
Alok Gupta
visit me at http://www.thisisalok.tk

SriSubbu13-Jul-04 1:17

Re: Problem Exporting the Modal Dialog from a Regular MFC DLL

13-Jul-04 1:17

Hi Friends,

I've Problem exporting a Modal Dialog from a Regular MFC DLL (Shared Library). But on runtime i'm getting error when i call the DoModal on the DLL side. This is happening for both MFC DLL Depended Host Application as well as the Win32 Host Application Confused | :confused:

.

The Code is like this

//on the DLL Side
extern "C" void __declspec(dllexport) TestFunction();

void TestFunction()
{
AFX_MANAGE_STATE(AfxGetStaticModuleState());
CMyDialog dlg;
dlg.DoModal();
}

//On the Caller Side
extern "C" void __declspec(dllimport) TestFunction();

void CMyTestApp::OnAppAbout()
{
TestFunction();
}

Please Help Me... Big Grin | :-D

!

Kind regards,
Subbi.

ThatsAlok13-Jul-04 2:08

Re: Problem Exporting the Modal Dialog from a Regular MFC DLL

13-Jul-04 2:08

Madame,With all due Respect,

Basiclly i never head of exporting class from MFC Regular DLL.
i think only MFC Extention DLL provide support for exporting class.

in my opinion,You create a MFCExtention DLL and then try to export Model Dilg class.
don't remeber to precede the DLg className with AFX_EXT_CLASS macro,then only you able to export it

-----------------------------
"I Think It will Work"
-----------------------------
Alok Gupta
visit me at http://www.thisisalok.tk

SriSubbu13-Jul-04 2:14

Re: Problem Exporting the Modal Dialog from a Regular MFC DLL

13-Jul-04 2:14

Hi Alok,

I think you have understood the problem not clearly. I'm creating a MFC Regular dll not a MFC Extention DLL as first.
Further What i'm trying to export is a C++ Function rather than the MFC Dialog Class (the TestFunction in this case). The Problem is whenever i try to call the Modal Dialog the Application breaks.

Kind regards,
Subramanian Iyer.

ThatsAlok13-Jul-04 2:35

Re: Problem Exporting the Modal Dialog from a Regular MFC DLL

13-Jul-04 2:35

Soory Again,Madame.
previously i think you want to export Dialog in your Main Application,that why i suggest you MFC Extention DLL because i am successfull in exporting Dialog Class using MFC .

but i think you want to create Regular dll that can show Dialog.,ok pls tell me is you seeing any error or assertion call,if yes pls send me the error code.

-----------------------------
"I Think It will Work"
-----------------------------
Alok Gupta
visit me at http://www.thisisalok.tk

SriSubbu13-Jul-04 3:43

Re: Problem Exporting the Modal Dialog from a Regular MFC DLL

13-Jul-04 3:43

Hi Alok,

I've my application break at the point when it tries to run the modal loop

I've the call Stack goes like that

Call stack:

CWnd::RunModalLoop(unsigned long 4) line 3478 + 11 bytes
CDialog::DoModal() line 536 + 12 bytes
InvokeModalDialog(HWND__ * 0x003d0290) line 72

And it seems that line 3478 of Wincore.cpp is calling the AfxGetThread() Which is returning NULL.

I thnink it will give you a clear picture...

Kind Regards,
Subbi.

bikram singh13-Jul-04 4:37

Re: Problem Exporting the Modal Dialog from a Regular MFC DLL

13-Jul-04 4:37

Hi,

I see no reason why your code should fail, under normal circumstances.

Infact, I tried your code (dll+exe side), and it compiles and runs perfectly well.

Something other than your test code could be causing the problem. It would help if you specified what else you are doing.

Bikram Singh

SriSubbu13-Jul-04 5:45

Re: Problem Exporting the Modal Dialog from a Regular MFC DLL

13-Jul-04 5:45

Hi Bikram,

Is it possible for you, can you kindly send me Your Test Application to me, so that i can find out the problem in my code. Even one of my other friend tried the same, even he got the same result.

Kind regards,
Subbi.

bikram singh13-Jul-04 6:22

Re: Problem Exporting the Modal Dialog from a Regular MFC DLL

13-Jul-04 6:22

sure. i'll email it to you.

Bikram Singh

SriSubbu13-Jul-04 10:50

objectpointer through memory

13-Jul-04 10:50

Bikram,

Really Thank You so much for your code. I found the Problem with my code.

Actually I've created a Win32 DLL thru' the Application wizard first and then I set the property to use MFC in Shared Dialog. So, i've no CWinApp Object Created, rather i've only the DLLMain function in the Application, which leads to the failure of the Application call by which i get a NULL pointer, of the AfxGetApp call in the RunModalLoop function.

Again I thank you for your help.

Kind Regards,
Subbi.

abhay10113-Jul-04 0:53

abhay101

13-Jul-04 0:53

Hi,
is there any way to get the oject pointer using WriteProcessMemory,ReadProcessMemory and windows hooking.

Regards
Abhay

objectpointer through memory

abhay10113-Jul-04 0:53

abhay101

13-Jul-04 0:53

Hi,
is there any way to get the oject pointer using WriteProcessMemory,ReadProcessMemory and windows hooking.

Regards
Abhay

Re: objectpointer through memory

bikram singh13-Jul-04 4:39

13-Jul-04 4:39

it is possible.

what does 'object' mean? C++ object? Win32 object?

Bikram Singh

process monitor

Anonymous13-Jul-04 0:52

Anonymous

13-Jul-04 0:52

i need to develop a process monitor which will show all the open ports in the machine. how do i proceed?

Re: process monitor

ThatsAlok13-Jul-04 1:41

13-Jul-04 1:41

serch for Port Scanner On CP ,you will many good Code for that.

An idea Behind it is.
create a socket application and connect each and every port
on local system.like this.

<br />
  CSocket a;<br />
  a.Create();<br />
  CUintArray b;<br />
  for(int i=0;i<=1024;i++)<br />
  {<br />
       if(a.Connect("127.0.0.1",i)==TRUE)<br />
        {<br />
         b.Add(i);<br />
         a.close();<br />
        }<br />
       a.close();<br />
    ::Sleep(1000);//wait for i sec<br />
}

and CUIntArray b contain all open port on your system

-----------------------------
"I Think It will Work"
-----------------------------
Alok Gupta
visit me at http://www.thisisalok.tk

computer id?

chedly_ensi13-Jul-04 0:43

chedly_ensi

13-Jul-04 0:43

hello,
i need to identify a machine (pc) in a unique way, is there a solution to get the id of motherboard or processor, the network card isn't always present.
thank you

Re: computer id?

bikram singh13-Jul-04 4:44