C / C++ / MFC Discussion Boards

slippnslide15-Apr-06 5:37

15-Apr-06 5:37

I have code to run through all the running processes and it gives me the PID of the program that I need. I got OpenProcess to work fine. This is what I have for code:
<code>#include <windows.h>
#include <psapi.h>

//Maximum processes
#define PROCMAXCOUNT 4096

int main()
{
int aa,bb,mode=0;
int IsProgram; //Used to check if a process is StarCraft
DWORD pIDs[PROCMAXCOUNT],pIDssz,pIDscount,Modssz,Modscount;
HANDLE proch;
HMODULE Mods[4096];
unsigned char mbasename[MAX_PATH];
MODULEINFO minfo;
char str[13] = "Program.exe"; //Process Name

HANDLE hProcess;
PBYTE pBuffer;
DWORD dwBaseAddress = 0x0114772C;
DWORD lSize = 0;
DWORD lRead = 0;

/* enumerate processes */
if (EnumProcesses(pIDs,sizeof(pIDs),&pIDssz)==FALSE) {
printf("Error getting process list.\n");
return 1;}

/* show processes info */
pIDscount=pIDssz/sizeof(DWORD);
for (aa=0;aa<pIDscount;aa++) {

/* open process */
if (!(proch=OpenProcess(PROCESS_QUERY_INFORMATION|PROCESS_VM_READ,FALSE,pIDs[aa]))) {
continue;}

/* enumerate modules */
if (!EnumProcessModules(proch,Mods,sizeof(HMODULE)*4096,&Modssz)) {
continue;}
Modscount=Modssz/sizeof(DWORD);

/* first module representes own process */
if (!mode) {
Modscount=1;}
for (bb=0;bb<Modscount;bb++) {
GetModuleBaseName(proch,Mods[bb],mbasename,MAX_PATH/sizeof(unsigned char));

IsProgram = strcmpi(str,mbasename);
if(IsStarCraft == 0) //checks if process name is StarCraft.exe
{
printf("Process ID: %i\n",pIDs[aa]);
hProcess = OpenProcess(PROCESS_ALL_ACCESS, FALSE, pIDs[aa]);
if (hProcess == NULL) { printf("Error opening process with OpenProcess()\n"); }

if (ReadProcessMemory(hProcess, (LPVOID)dwBaseAddress, pBuffer, lSize, &lRead))
{
printf("%s",pBuffer);
}
else { printf("ReadProcessMemory failed.\n"); }

}

}

}

return 0;
}</code>

ReadProcessMemory works fine if lSize is 0, but not if I set it to anything else. So, I have these questions:
1) Is dwBaseAddress being used correctly for the specific address I need?
2) How do I get ReadProcessMemory to read a string from memory and display it as ASCII?
3) What do you set lSize to if you want to read a 4-byte long integer? Setting it to 4 or 0x4 doesn't work.

Thanks in advance.

-- modified at 11:40 Saturday 15th April, 2006

Re: Getting ReadProcessMemory to work right

Ryan Binns15-Apr-06 22:17

Ryan Binns

15-Apr-06 22:17

slippnslide wrote:
1) Is dwBaseAddress being used correctly for the specific address I need?

The base address is the value of the HINSTANCE for the module you're reading from.

slippnslide wrote:
2) How do I get ReadProcessMemory to read a string from memory and display it as ASCII?

ReadProcessMemory() doesn't do any display - you use it to read the bytes you want and then do the display yourself.

slippnslide wrote:
3) What do you set lSize to if you want to read a 4-byte long integer? Setting it to 4 or 0x4 doesn't work.

Err... 4. You're reading 4 bytes, so set lSize to 4. 4 will work if you have got the address correct.

Ryan

"Punctuality is only a virtue for those who aren't smart enough to think of good excuses for being late" John Nichol "Point Of Impact"

Message Box

Laughing Buddha15-Apr-06 5:06

Laughing Buddha

15-Apr-06 5:06

Hi everyone,

I am using a dialog application and I want to use Message Boxes to send messages to the user. However they seem to be hidden behind the dialog application. As a consequence I have to press the TAB key once and then press Enter to get back to interact with my application. I read in the Microsoft Helo that pressing the TAB key looses the focus of a control. Why does my message box not appear over my dialog application?? Is there another easy way of sending messages to the user. I don't really want to create a lot of modal dialogs. Frown | :(

Can anyone help me with this problem please? I would appreciate any help at all!!

Re: Message Box

Ravi Bhavnani15-Apr-06 5:10

Ravi Bhavnani

15-Apr-06 5:10

Laughing Buddha wrote:
However they seem to be hidden behind the dialog application.

Check that you're passing the right parent handle to the MessageBox() function. If you're using MFC, you may find it more convenient to use AfxMessageBox().

/ravi

My new year's resolution: 2048 x 1536
Home | Music | Articles | Freeware | Trips
ravib(at)ravib(dot)com

Re: Message Box

FarPointer15-Apr-06 5:23

FarPointer

15-Apr-06 5:23

Set the parent of the messagebox as that of your dialog .(pass the dialog's handle to the messagebox).

Regards,
FarPointer

Re: Message Box

bob1697215-Apr-06 12:05

bob16972

15-Apr-06 12:05

AfxMessageBox("Sample topmost messagebox in MFC",MB_TOPMOST);

Re: Message Box

Ryan Binns15-Apr-06 22:18

Ryan Binns

15-Apr-06 22:18

Argh. Not topmost message boxes. I hate them. What if the user wants to switch away from your application? They shouldn't be forced to close some silly message box just to use another application.

Ryan

"Punctuality is only a virtue for those who aren't smart enough to think of good excuses for being late" John Nichol "Point Of Impact"

Re: Message Box

bob169722-May-06 18:20

bob16972

2-May-06 18:20

Ryan Binns wrote:
They shouldn't be forced to close some silly message box just to use another application

Yeah, your probably right. We should let the important message linger somewhere behind all those other windows. I always love it when I'm trying to close my windows and a stray message box is hiding behind the others keeping me from closing my app until I figure out that there is a modal messagebox hidden somewhere.

Re: Message Box

Ryan Binns2-May-06 23:29

Ryan Binns

2-May-06 23:29

Thankyou for deliberately twisting my words. I specifically said "to use another application"

Message boxes should be on top of all the other windows in your application. They should not be on top of every other application in the system unless they are informing the user of something that affects the entire system, not just your application.

Ryan

"Punctuality is only a virtue for those who aren't smart enough to think of good excuses for being late" John Nichol "Point Of Impact"

Cannot find a way to emulate Ctrl-Alt-Del on Windows NT

Hovo15-Apr-06 4:20

Hovo

15-Apr-06 4:20

It has been a couple of days as I am trying to emulate Ctrl-Alt-Del action on Windows NT.

It turns out that there is no any API similar to 'LockWorkStation' supported in Windows 2000/XP.

Recently I found out that there is one undocumented function in User32.dll named 'LockWindowStation'. Does anybody know how I can make use of it? Or does anybody know how can I emulate Ctrl-Alt-Del on Windows NT at all?

Thank You in advance.

Hovo

Re: Cannot find a way to emulate Ctrl-Alt-Del on Windows NT

Hallery.Lai16-Apr-06 22:18

Hallery.Lai

16-Apr-06 22:18

I think 'LockWorkStation' supported in windows 2000/xp,'emulate'? what's mean? Is forbid Ctrl-Alt-Del?if you will forbid Ctrl-Alt-Del,that's easy. if you are imitative of the login interface of win2000/xp, you can replace file "gina.dll" to your own gina.dll

Manifest for MFC DLL

madmax000115-Apr-06 2:28

madmax0001

15-Apr-06 2:28

Hello,

I want to implement XP Visual Styles for a MFC DLL. I've read many infos about it in the web but I have still problems.
So what I have done:
resource.h
#define MANIFEST_RESOURCE_ID 2

I imported a new resource with the type 24 as MANIFEST_RESOURCE_ID. So the .rc file looks like:
MANIFEST_RESOURCE_ID 24 MOVEABLE PURE "res\\MyDlgDll.dll.manifest"

stdafx.h
#define ISOLATION_AWARE_ENABLED 1

compiler otion:
/D "ISOLATION_AWARE_ENABLED"

When I build the project with VC8 it works fine: The main application can have the visual styles disabled while the DLL always uses XP styles.

But I must build the DLL with VC6 and this doesn't work. I have installed the newest Microsoft Platform SDK for Windows Server 2003 R2 where I can see in commctrl.h the #if def section for the ISOLATION_AWARE_ENABLED stuff.
I have adjusted the VC6 path to the new include dirc of the platform SDK. But I still use the old VC6 libs because the plaform SDK has no X86 builds of the LIBs.
Maybe the problem is the linking of my dll fo mfc42? (When I comile with VC8 the dll is linked mfc80).

Can someone help me?

THX

BREAK POINT PROBLEM

shadrach_india15-Apr-06 2:21

shadrach_india

15-Apr-06 2:21

When I go to set break point in my code , I am facing this error message from IDE.

“ One or more breakpoints cannot be set and have been disabled. Execution will stop at the beginning of the program.”

There is no break point in my code.

How to solve this problem ?

-- modified at 8:21 Saturday 15th April, 2006

Re: BREAK POINT PROBLEM

Stephen Hewitt15-Apr-06 3:07

Stephen Hewitt

15-Apr-06 3:07

This problem happens with MSVC when you place a BP and try to debug the program but the module that contains the BP isn't loaded yet. All you can really do is wait for the module to be loaded then re-insert the BP or use WinDBG (or another debugger which) allows you to place breakpoints in modules which are not yet loaded.

Steve

Re: BREAK POINT PROBLEM

Ravi Bhavnani15-Apr-06 5:11

Ravi Bhavnani

15-Apr-06 5:11

It's possible that your source code may not be in sync with your binaries. Try rebuilding the entire project (esp. any libraries or DLLs you link with) and see if that helps.

/ravi

My new year's resolution: 2048 x 1536
Home | Music | Articles | Freeware | Trips
ravib(at)ravib(dot)com

Re: BREAK POINT PROBLEM

FarPointer15-Apr-06 5:25

FarPointer

15-Apr-06 5:25

Check wether its in release mode .

Regards,
FarPointer

pls help in completing my project

swapna_signsin14-Apr-06 22:23

swapna_signsin

14-Apr-06 22:23

Hi,
I actually I've to complete my project asap.I just have to display the database(MSACCESS) thru comboboxes.I just have to display the corresponding products,of say 1st combobox in 2nd combobox.How do I do it,where should I write the code.

pls hlp

swapna_signsin

Re: pls help in completing my project

kk.tvm14-Apr-06 22:31

kk.tvm

14-Apr-06 22:31

Hi
Please try to use DAO in your program. More help is available in MSDN

regards

KK

Re: pls help in completing my project

kk.tvm14-Apr-06 22:44

kk.tvm

14-Apr-06 22:44

Hi
Write combo box change message function for 1st Combo Box
In the function clear 2nd combo box and write query corresponding to the value of first combo box

regards
KK

Implementing SampleGrabber Filter

atimpoo14-Apr-06 21:43

atimpoo

14-Apr-06 21:43

Hi All,

I am trying to implement a SampleGrabber filter which takes two input and gives an output.
My actual requirement is I want to replace an audio stream in any media file with my own audio stream.

Can anybody help me out in this.

Thanks in Advance

Poornima

Re: Implementing SampleGrabber Filter

Amar Sutar15-Apr-06 1:59

Amar Sutar

15-Apr-06 1:59

Sample application is available in DirectX SDK
Samples\C++\DirectShow\Editing\SampGrabCB

Use ISampleGrabberCB. For more help search in MSDN.

Regards
Amar. Smile | :)

Re: Implementing SampleGrabber Filter

atimpoo16-Apr-06 21:41

atimpoo

16-Apr-06 21:41

Hi Amar,

I created time line object to mix audio and video files. It is working fine and thanks for the help.

How can I save this to a destination?

Regards,
Poornima

Release a file that is in use

Yevgeny Efter14-Apr-06 21:27

Yevgeny Efter

14-Apr-06 21:27

Hello!
I want to write a program that releases files that are in use by something I don't know...
Actually, I don't know where to start... If someone could help, I would be very thankful...

Thanks in advance!

Re: Release a file that is in use

_AnsHUMAN_ 14-Apr-06 23:05

_AnsHUMAN_

14-Apr-06 23:05

check for CTL_E_FILEALREADYOPEN.
If the file is already open you would need to create a custom method for
CUSTOM_CTL_SCODE and then you can release the file you intend to use.
May be this can help you.

Vision is Always important and so is your ATTITUDE.

Wishes.

Anshuman Dandekar

Re: Release a file that is in use

Yevgeny Efter15-Apr-06 7:21

Yevgeny Efter

15-Apr-06 7:21

I didn't understand what you mean... Maybe you can better explain yourself?

Thanks!

Use Ctrl+Left/Right to switch messages, Ctrl+Up/Down to switch threads, Ctrl+Shift+Left/Right to switch pages.