Re: Error in CreateProcess. - C / C++ / MFC Discussion Boards

GauranG Shah1-Sep-07 2:35

1-Sep-07 2:35

Hi,

I have made the Followind chages to my code but now it gives me followind Exceprion

Unhandled exception at 0x7c4f3ac3 in Dekstop-GUI.exe: 0xC0000005: Access violation writing location 0x00416856.

The Code is as follow.

<br />
<br />
void ShowImage(void)<br />
{<br />
	LPWSTR str = L"c:\\WINNT\\system32\\notepad.exe";<br />
	STARTUPINFO si;<br />
	PROCESS_INFORMATION pi;<br />
   <br />
	BOOL ProcCreated;<br />
    ZeroMemory( &si, sizeof(si) );<br />
    si.cb = sizeof(si);<br />
    ZeroMemory( &pi, sizeof(pi) );<br />
<br />
    // Start the child process. <br />
    ProcCreated =CreateProcess( NULL,str,NULL,NULL,FALSE,0,NULL, NULL,&si,&pi );             <br />
<br />
}<br />
<br />

Re: Error in CreateProcess.

Nishad S1-Sep-07 2:40

Nishad S

1-Sep-07 2:40

The following modifications may help you...

STARTUPINFO si;
PROCESS_INFORMATION pi;

ZeroMemory(&si,sizeof(si));
si.cb = sizeof(si);
si.dwFlags = STARTF_USESHOWWINDOW;
si.wShowWindow = SW_SHOWMAXIMIZED;
ZeroMemory(&pi,sizeof(pi));

- NS -

Re: Error in CreateProcess.

GauranG Shah1-Sep-07 3:20

GauranG Shah

1-Sep-07 3:20

Thnx,
But Error Still persist.
The prior code I just post to you is working well in other application. But it gives the Error in this Application only.

I am using MouseHook in my Programming. Can it generate any Probelem. Confused | :confused:

Re: Error in CreateProcess.

Waldermort1-Sep-07 14:37

Waldermort

1-Sep-07 14:37

The second paramater expects a LPTSTR you are passing a LPCTSTR. CreateProcess() will try to modify the string in the second paramater.

TCHAR str[ MAX_PATH ];<br />
_tcscpy_s( str, MAX_PATH, _T("c:\\WINNT\\system32\\notepad.exe") );<br />
<br />
CreateProcess( NULL, str, ... )

Re: Error in CreateProcess.

GauranG Shah2-Sep-07 18:25

GauranG Shah

2-Sep-07 18:25

Thnx a lot. problem solved. might be u had find this probelm silly. But I am a vary beginner programmer in VC++.

Re: Error in CreateProcess.

Roger Broomfield1-Sep-07 3:16

Roger Broomfield

1-Sep-07 3:16

Gaurang you deleted the message at the base of this thread too, please stop doing that.

Re: Error in CreateProcess.

GauranG Shah1-Sep-07 3:23

GauranG Shah

1-Sep-07 3:23

Sorry for that.

But can u help me in my problem
I am trying to create the Process using Crateprocess. I have just copy the function from my other project. It works there fine. but gives error in this project.

I am using win32 Dialog base Applicaion and a Dll file for MouseHook.
Can this thing cause any problem

Re: Error in CreateProcess.

Roger Broomfield1-Sep-07 4:02

Roger Broomfield

1-Sep-07 4:02

You imply in your messages that you are using some kind of MouseHook and yet all you give is the CreateProcess() call.

Stack trace the exception, and post relevant pieces of your code.

Re: Error in CreateProcess.

GauranG Shah1-Sep-07 4:28

GauranG Shah

1-Sep-07 4:28

Ok. I have tried the same code in other win32 application which doesnt uses any other thing.

I just simply create the Win32 Project throught Winzard(VC 2005) and the make the changes so that when you press OK Button on About Box it Call the ShowImage() Function. But still it gives the me the Runtime Error. The Follwing code works fine in one of my MFC Application.

<br />
<br />
void ShowImage(void)<br />
{ STARTUPINFO si;<br />
    PROCESS_INFORMATION pi;<br />
<br />
    ZeroMemory(&si, sizeof(si) );<br />
    si.cb = sizeof(si);<br />
    ZeroMemory(&pi, sizeof(pi) );<br />
<br />
    // Start the child process. <br />
    CreateProcess( NULL, // No module name (use command line). <br />
        L"MSPAINT", // Command line. <br />
        NULL,             // Process handle not inheritable. <br />
        NULL,             // Thread handle not inheritable. <br />
        FALSE,            // Set handle inheritance to FALSE. <br />
        0,                // No creation flags. <br />
        NULL,             // Use parent's environment block. <br />
        NULL,             // Use parent's starting directory. <br />
        &si,              // Pointer to STARTUPINFO structure.<br />
        &pi );             // Pointer to PROCESS_INFORMATION structure.<br />
		<br />
}<br />
<br />

Re: Error in CreateProcess. [modified]

Roger Broomfield1-Sep-07 5:08

Roger Broomfield

1-Sep-07 5:08

I see nothing wrong in your usage of CreateProcess() (unless you are compiling without UNICODE defined) therefore the problem must be in some other part of your application. As suggested by your statement The Follwing code works fine in one of my MFC Application.

As indicated by WalderMort above my comment here is totally wrong.

-- modified at 0:14 Sunday 2nd September, 2007

include mfc42.dll in exe? (vc++ 6.0) [modified]

rolfhorror1-Sep-07 1:13

rolfhorror

1-Sep-07 1:13

is there any way of including the mfc42.dll file (or it's content) in the exe file,
so that you dont have to add the mfcfile along with the executable when releasing the final product to the end user?
or is any way to not use mfc42.dll at all when developing a mfc dialog app?
(vc++ 6.0 standard edition)

off topic: is there any new servicepacks for vc++ 6.0, i've got sp6, is this the latest?

thx!

-- modified at 8:00 Saturday 1st September, 2007
sp1 -> sp6

Re: include mfc42.dll in exe? (vc++ 6.0)

Nishad S1-Sep-07 1:45

Nishad S

1-Sep-07 1:45

rolfhorror wrote:
is there any way of including the mfc42.dll file (or it's content) in the exe file

You can link it as static library. It is set via project settings => General.

rolfhorror wrote:
is there any new servicepacks for vc++ 6.0

As far as I know, SP6 is there. But I dont know from where it is available.

- NS -

Re: include mfc42.dll in exe? (vc++ 6.0) [modified]

rolfhorror1-Sep-07 1:58

rolfhorror

1-Sep-07 1:58

thanx for answering, i'll try the linking thing.
sorry about the servicepack, i meant i've got sp6 not sp1, maybe 6 is the latest Smile | :)

thanx.

Re: include mfc42.dll in exe? (vc++ 6.0)

rolfhorror1-Sep-07 2:38

rolfhorror

1-Sep-07 2:38

how exactly would you link mfc42.dll in Project->Settings->General

where do i go from there? Theres no options only "Use MFC in a Shared DLL"

How do i statically link mfc42.dll to my exe?
cant seem to find any articles about that.

Re: include mfc42.dll in exe? (vc++ 6.0)

Nishad S1-Sep-07 2:45

Nishad S

1-Sep-07 2:45

rolfhorror wrote:
Theres no options only "Use MFC in a Shared DLL"

Really? You probably not installed the static libraries... Frown | :(

If it is fine, there will be another option, "Use MFC in a Static Library"

- NS -

Re: include mfc42.dll in exe? (vc++ 6.0) [modified]

rolfhorror1-Sep-07 2:51

rolfhorror

1-Sep-07 2:51

i guess i havent got static libs installed, strange, isn't static libs common?
think i need vc++ 6.0 Pro.Edition, i only have the Standard ed, and its without the static libs Frown | :-(

is there any other options?
maybe programatically add som lines of code?

thanx! Smile | :)

-- modified at 9:06 Saturday 1st September, 2007

Re: include mfc42.dll in exe? (vc++ 6.0)

Nishad S1-Sep-07 3:08

Nishad S

1-Sep-07 3:08

rolfhorror wrote:
how can i install them

You just need to modify the installation from the "Add or Remove Programs" in control panel. Select Add/Remove when setup screen is shown... And select the options of static libraries...

- NS -

Re: include mfc42.dll in exe? (vc++ 6.0) [modified]

rolfhorror1-Sep-07 3:09

rolfhorror

1-Sep-07 3:09

ok, i'll check it out.
thanx. Smile | :)

edit:

i only have these options:

VC++ dev studio
VC++ runtime libs
VC++ mfc and temp libs
VC++ build tools
tools
data access
activex controls

---
no static libs..
only something called "static crt libs" in a submenu, but this was installed.

like i said before, i think i may have the light version of vc++ 6.0(standard not pro) which is without static libs.

-- modified at 9:17 Saturday 1st September, 2007

Re: include mfc42.dll in exe? (vc++ 6.0)

Nishad S1-Sep-07 3:20

Nishad S

1-Sep-07 3:20