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Robert E Mitchell, Sr.
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 Posted: Sun Jul 30, 2006 8:10 am Post subject: How do I detect if a windows program is running |
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I sell a software package that starts several windows programs, but does not
always shut them down properly. If any of the programs are running, it
blocks the windows shutdown functionality. It also won't start the package
properly if any of the programs are already running. I get tired of going
out to my customers sites to go through the task manager to clean things up.
The manufacturer doesn't want to solve the problem, so I want to write a
program that will detect if any of the programs are already running, and if
they are, shut them down.
I need some advice on where to start finding if a program is running.
Any help would be greatly appreciated.
Thank you.
Robert E Mitchell, Sr.
Mill Creek, WA |
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JD
Guest
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| Posted: Sun Jul 30, 2006 3:57 pm Post subject: Re: How do I detect if a windows program is running |
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"Robert E Mitchell, Sr." <n2963p (AT) earthlink (DOT) net> wrote:
| Quote: |
[...] I need some advice on where to start finding if a
program is running.
|
The first thing that you'll need to do is build a list of the
offending applications and then translate that list into each
application's Window's ClassName.
To accomplish this, launch the offending application and use
the win32 API EnumWindows to enumerate all top level windows
and inspect their Window's ClassName. For example:
//-------------------------------------------------------------
BOOL CALLBACK EnumWindowsCallBack( HWND hWnd, LPARAM lParam )
{
char WindowClassName[256] = { 0 };
if( ::GetClassName(hWnd, WindowClassName, 255) )
{
ShowMessage( WindowClassName );
}
return TRUE;
}
//-------------------------------------------------------------
void __fastcall TForm1::Button1Click( TObject *Sender )
{
::EnumWindows( (WNDENUMPROC)EnumWindowsCallBack, NULL );
}
//-------------------------------------------------------------
Then, once you have the list built:
//-------------------------------------------------------------
BOOL CALLBACK EnumWindowsCallBack( HWND hWnd, LPARAM lParam )
{
char WindowClassName[256] = { 0 };
if( ::GetClassName(hWnd, WindowClassName, 255) )
{
if( stricmp(WindowClassName, (char*)lParam) == 0)
{
::SendMessage( hWnd, WM_QUIT, 0, 0 );
return FALSE;
}
}
return TRUE;
}
//-------------------------------------------------------------
void __fastcall TForm1::Button1Click( TObject *Sender )
{
int TotalOffenders = 2;
AnsiString ClassNames[ TotalOffenders ] = { "ThisOne", "ThatOne" };
for( int x = 0; x < TotalOffenders; ++x )
{
::EnumWindows( (WNDENUMPROC)EnumWindowsCallBack, (LPARAM)ClassNames[x].c_str() );
}
}
//-------------------------------------------------------------
Be aware that you may find one or 2 applications that don't
close because they don't have to if they don't want to. For
those, you'll need to use the win32 API TerminateProcess.
~ JD |
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Remy Lebeau (TeamB)
Guest
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| Posted: Mon Jul 31, 2006 5:29 am Post subject: Re: How do I detect if a windows program is running |
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"Robert E Mitchell, Sr." <n2963p (AT) earthlink (DOT) net> wrote in message
news:44cc30ce$1 (AT) newsgroups (DOT) borland.com...
| Quote: | I want to write a program that will detect if any of the
programs are already running
|
How To Enumerate Applications Using Win32 APIs
http://support.microsoft.com/default.aspx?scid=kb;EN-US;q175030
| Quote: | and if they are, shut them down.
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Once you find the desired .exe process, you will have its process ID. You
can use OpenProcess() and TerminateProcess() to kill it.
Gambit |
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