More vb.Net Create Process Problems

[paul schenk via .NET 247]

(Type your message here)

--------------------------------
From: paul schenk

Hi All

Would be grateful of advice please. I have code in VB6 working as follows:

lngReply = CreateProcess(sNull, txtStart, ByVal 0&, ByVal 0&, 1&, _
NORMAL_PRIORITY_CLASS, ByVal 0&, sNull, sInfo, pInfo)

but alas, the 'equivelant' vb.Net code translated as:


lngReply = CreateProcess(sNull, txtStart.Text, sa, sa, 1, _
NORMAL_PRIORITY_CLASS, 0, sNull, sInfo, pInfo)


does not execute cleanly. That is, although the CreateProcess returns 'successfully', and populates the sInfo structure with valid data, the application (e.g. c:\windows\notepad.exe) 'fails during initialisation' and terminates.

The only 'meaningful' difference between the working vb6 and non-working vb.net code, is the substitution of vb6's 'As Any' Win32API declaration parameterss with 'AS Securities_Attributes' structures, which I have defined thus:

Structure SECURITY_ATTRIBUTES
Dim nLength As Integer
Dim lpSecurityDescriptor As Integer
Dim bInheritHandle As Integer
End Structure

and are passed-in called 'sa', as noted above.

Please, can someone offer either a correction for my error, or a good code example / reference for calling CreateProcess from vb.net.

NB: I need to use CreateProcess rather than the Process component in the managed code, as I need to set some 'lower level' start info parameters, which I can only get at using the API directly

Many Thanks in advance,
Paul.

 

[Chris Tacke, eMVP]

Since the security attributes are not supported in CE, just pass it null or
zero. You might consider looking at the OpenNETCF Process class which wraps
this (and a whole lot more).

www.opennetcf.org

-Chris

(Type your message here)

--------------------------------
From: paul schenk

Hi All

Would be grateful of advice please. I have code in VB6 working as follows:

lngReply = CreateProcess(sNull, txtStart, ByVal 0&, ByVal 0&, 1&, _
NORMAL_PRIORITY_CLASS, ByVal 0&, sNull, sInfo, pInfo)

but alas, the 'equivelant' vb.Net code translated as:


lngReply = CreateProcess(sNull, txtStart.Text, sa, sa, 1, _
NORMAL_PRIORITY_CLASS, 0, sNull, sInfo, pInfo)


does not execute cleanly. That is, although the CreateProcess returns

'successfully', and populates the sInfo structure with valid data, the
application (e.g. c:\windows\notepad.exe) 'fails during initialisation' and
terminates.

The only 'meaningful' difference between the working vb6 and non-working

vb.net code, is the substitution of vb6's 'As Any' Win32API declaration
parameterss with 'AS Securities_Attributes' structures, which I have defined
thus:

Structure SECURITY_ATTRIBUTES
Dim nLength As Integer
Dim lpSecurityDescriptor As Integer
Dim bInheritHandle As Integer
End Structure

and are passed-in called 'sa', as noted above.

Please, can someone offer either a correction for my error, or a good code

example / reference for calling CreateProcess from vb.net.

NB: I need to use CreateProcess rather than the Process component in the

managed code, as I need to set some 'lower level' start info parameters,
which I can only get at using the API directly

 

[Guest]

Hi Chris,

Many thanks for your reply. Unfortunately, I am using regular vb.net in VS2003. Confusion was caused by me posting on your ce board - my apologies.

However, the problem remains.... as passing 0 or null doesn't fix things

Sorry to be cheeky but i'm still at a loss. Frankly, honestly, I have not seen ANYWHERE yet, after several days looking, of ANY example - using vb.Net - of a CreateProcess function that works - not in MSDN / KB, nor any of the multitude of 'guru' sites.....

If you or anyone knows different, I would be grateful in the extreme for a simple hello world example of CreateProcess, that actually works in vb.Net

Appreciative Thanks,
Paul.

Since the security attributes are not supported in CE, just pass it null or
zero. You might consider looking at the OpenNETCF Process class which wraps
this (and a whole lot more).

www.opennetcf.org

-Chris

(Type your message here)

--------------------------------
From: paul schenk

Hi All

Would be grateful of advice please. I have code in VB6 working as follows:

lngReply = CreateProcess(sNull, txtStart, ByVal 0&, ByVal 0&, 1&, _
NORMAL_PRIORITY_CLASS, ByVal 0&, sNull, sInfo, pInfo)

but alas, the 'equivelant' vb.Net code translated as:


lngReply = CreateProcess(sNull, txtStart.Text, sa, sa, 1, _
NORMAL_PRIORITY_CLASS, 0, sNull, sInfo, pInfo)


does not execute cleanly. That is, although the CreateProcess returns

'successfully', and populates the sInfo structure with valid data, the
application (e.g. c:\windows\notepad.exe) 'fails during initialisation' and
terminates.

The only 'meaningful' difference between the working vb6 and non-working

vb.net code, is the substitution of vb6's 'As Any' Win32API declaration
parameterss with 'AS Securities_Attributes' structures, which I have defined
thus:

Structure SECURITY_ATTRIBUTES
Dim nLength As Integer
Dim lpSecurityDescriptor As Integer
Dim bInheritHandle As Integer
End Structure

and are passed-in called 'sa', as noted above.

Please, can someone offer either a correction for my error, or a good code

example / reference for calling CreateProcess from vb.net.

NB: I need to use CreateProcess rather than the Process component in the

managed code, as I need to set some 'lower level' start info parameters,
which I can only get at using the API directly

 

[Guest]

Hi Chris,

Many thanks for your reply. Unfortunately, I am using regular vb.net in VS2003. Confusion was caused by me posting on your ce board - my apologies.

However, the problem remains.... as passing 0 or null doesn't fix things

Sorry to be cheeky but i'm still at a loss. Frankly, honestly, I have not seen ANYWHERE yet, after several days looking, of ANY example - using vb.Net - of a CreateProcess function that works - not in MSDN / KB, nor any of the multitude of 'guru' sites.....

If you or anyone knows different, I would be grateful in the extreme for a simple hello world example of CreateProcess, that actually works in vb.Net

Appreciative Thanks,
Paul.

Since the security attributes are not supported in CE, just pass it null or
zero. You might consider looking at the OpenNETCF Process class which wraps
this (and a whole lot more).

www.opennetcf.org

-Chris

(Type your message here)

--------------------------------
From: paul schenk

Hi All

Would be grateful of advice please. I have code in VB6 working as follows:

lngReply = CreateProcess(sNull, txtStart, ByVal 0&, ByVal 0&, 1&, _
NORMAL_PRIORITY_CLASS, ByVal 0&, sNull, sInfo, pInfo)

but alas, the 'equivelant' vb.Net code translated as:


lngReply = CreateProcess(sNull, txtStart.Text, sa, sa, 1, _
NORMAL_PRIORITY_CLASS, 0, sNull, sInfo, pInfo)


does not execute cleanly. That is, although the CreateProcess returns

'successfully', and populates the sInfo structure with valid data, the
application (e.g. c:\windows\notepad.exe) 'fails during initialisation' and
terminates.

The only 'meaningful' difference between the working vb6 and non-working

vb.net code, is the substitution of vb6's 'As Any' Win32API declaration
parameterss with 'AS Securities_Attributes' structures, which I have defined
thus:

Structure SECURITY_ATTRIBUTES
Dim nLength As Integer
Dim lpSecurityDescriptor As Integer
Dim bInheritHandle As Integer
End Structure

and are passed-in called 'sa', as noted above.

Please, can someone offer either a correction for my error, or a good code

example / reference for calling CreateProcess from vb.net.

NB: I need to use CreateProcess rather than the Process component in the

managed code, as I need to set some 'lower level' start info parameters,
which I can only get at using the API directly