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[C#] CreateProcess()

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rump
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Joined: 03 Oct 2007
Posts: 169

Posted: Wed Dec 26, 2007 9:00 am Post subject: [C#] CreateProcess()

Hello again, unfortunatly I suck at understanding how to use the code @ www.msdn.com so when I searched for CreateProcess() and I got this snippet of code I became a bit clueless:

Code:

BOOL WINAPI CreateProcess(
__in_opt LPCTSTR lpApplicationName,
__inout_opt LPTSTR lpCommandLine,
__in_opt LPSECURITY_ATTRIBUTES lpProcessAttributes,
__in_opt LPSECURITY_ATTRIBUTES lpThreadAttributes,
__in BOOL bInheritHandles,
__in DWORD dwCreationFlags,
__in_opt LPVOID lpEnvironment,
__in_opt LPCTSTR lpCurrentDirectory,
__in LPSTARTUPINFO lpStartupInfo,
__out LPPROCESS_INFORMATION lpProcessInformation
);

Should I just copy paste it into my clickbutton function and add "my path to my .exe file" after __in_opt LPCTSTR <here>, my usual methods i've used have only required 1 or 2 parameters, thus I've written the calling of those methods like this:

Code:

myMethod(param1, param2);

Is there any difference between that and writing it like this:

Code:

myMethod(
param1,
param2,
);

Thanks for reading
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lurc
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Joined: 13 Nov 2006
Posts: 1900

Posted: Wed Dec 26, 2007 10:58 am Post subject: Re: [C#] CreateProcess()

rump wrote:

I've written the calling of those methods like this:

Code:

myMethod(param1, param2);

Is there any difference between that and writing it like this:

Code:

myMethod(
param1,
param2,
);

no
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rapion124
Grandmaster Cheater Supreme

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Joined: 25 Mar 2007
Posts: 1095

Posted: Wed Dec 26, 2007 2:20 pm Post subject:

You can't just copy down the code and have it work. MSDN documents a WinAPI function. It shows you all the parameters needed to call it, what the function does, and the return values. You need to replace all the parameters with the ones you are going to use in your program.

samuri25404
Grandmaster Cheater

Reputation: 7

Joined: 04 May 2007
Posts: 955
Location: Why do you care?

Posted: Wed Dec 26, 2007 2:25 pm Post subject: Re: [C#] CreateProcess()

rump wrote:

Hello again, unfortunatly I suck at understanding how to use the code @ www.msdn.com so when I searched for CreateProcess() and I got this snippet of code I became a bit clueless:

Code:

myMethod(param1, param2);

Is there any difference between that and writing it like this:

Code:

myMethod(
param1,
param2,
);

Thanks for reading

I Google'd and found this VB.Net code:

Code:

Private Declare Function CreateProcess
Lib _
"kernel32" Alias "CreateProcessA" (ByVal lpApplicationName As String, _
ByVal lpCommandLine As String, _ =
ByVal lpProcessAttributes As Long,_
ByVal lpThreadAttributes As Long,_
ByVal bInheritHandles As Long, _ =
ByVal dwCreationFlags As ProcessCreationFlags, _
ByVal lpEnvironment As Long, _
ByVal lpCurrentDirectory As String, _
lpStartupInfo As STARTUPINFO,_
lpProcessInformation As PROCESS_INFORMATION) _
As Long

Public Enum ProcessCreationFlags
DEBUG_PROCESS = &H1
DEBUG_ONLY_THIS_PROCESS = &H2
CREATE_SUSPENDED = &H4
DETACHED_PROCESS = &H8
CREATE_NEW_CONSOLE = &H10
NORMAL_PRIORITY_CLASS = &H20
IDLE_PRIORITY_CLASS = &H40
HIGH_PRIORITY_CLASS = &H80
REALTIME_PRIORITY_CLASS = &H100
CREATE_NEW_PROCESS_GROUP = &H200
CREATE_UNICODE_ENVIRONMENT = &H400
CREATE_SEPARATE_WOW_VDM = &H800
CREATE_SHARED_WOW_VDM = &H1000
CREATE_FORCEDOS = &H2000
CREATE_DEFAULT_ERROR_MODE = &H4000000
CREATE_NO_WINDOW = &H8000000
End Enum

and hand-converted it to C#:

Code:

private static extern long CreateProcessA(
string lpApplicationName,
string lpCommandLine,
long lpProcessAttributes,
long lpThreadAttributes,
long bInheritHandles,
ProcessCreationFlags dwCreationFlags,
long lpEnvironment,
string lpCurrentDirectory,
STARTUPINFO lpStartupInfo,
PROCESSINFORMATION lpProcessInformation);

public enum ProcessCreationFlags
{
DEBUG_PROCESS = &0x1
DEBUG_ONLY_THIS_PROCESS = &0x2
CREATE_SUSPENDED = &0x4
DETACHED_PROCESS = &0x8
CREATE_NEW_CONSOLE = &0x10
NORMAL_PRIORITY_CLASS = &0x20
IDLE_PRIORITY_CLASS = &0x40
HIGH_PRIORITY_CLASS = &0x80
REALTIME_PRIORITY_CLASS = &0x100
CREATE_NEW_PROCESS_GROUP = &0x200
CREATE_UNICODE_ENVIRONMENT = &0x400
CREATE_SEPARATE_WOW_VDM = &0x800
CREATE_SHARED_WOW_VDM = &0x1000
CREATE_FORCEDOS = &0x2000
CREATE_DEFAULT_ERROR_MODE = &0x4000000
CREATE_NO_WINDOW = &0x8000000
}

Here's the link:

http://www.codeguru.com/vb/gen/vb_system/win32/article.php/c7525/
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the_undead
Expert Cheater

Reputation: 1

Joined: 12 Nov 2006
Posts: 235
Location: Johannesburg, South Africa

Posted: Wed Dec 26, 2007 2:35 pm Post subject:

Youre using C# so why not just:

Code:

using System.Diagnostics;
Process engine = Process.Start("C:\\ADDRESSOFEXE.EXE")

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samuri25404
Grandmaster Cheater

Reputation: 7

Joined: 04 May 2007
Posts: 955
Location: Why do you care?

Posted: Wed Dec 26, 2007 2:38 pm Post subject:

the_undead wrote:

Youre using C# so why not just:

Code:

using System.Diagnostics;
Process engine = Process.Start("C:\\ADDRESSOFEXE.EXE")

Good point--I assumed he wanted to make the apicall, but yeah.
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