How to switch to "Login Window" using cocoa?

From my cocoa application I need to programmatically switch user desktop to Login Window.
The analog of this function is "Login Window" item near the user list menu in the status area (Fast User Switching, Session switch).
I need this API under 10.6
thanks!

In the Terminal, type
{code}/System/Library/CoreServices/Menu\ Extras/User.menu/Contents/Resources/CGSession -suspend{code}
So you just have to perform a system call to run this command.

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This question is in Business Continuity Plan (BCP)
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Hi,
I am using my mac now since about 10 months. I was used to work with Linux and Windows XP.
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well what you are saying is obvious to me. This is not the point for me and not what I wanted to know. But I think you answered my question anyway: OS X is unable to switch between windows of the same application as I mentioned in my example.
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Panic after switching to Login Window

Background/Recent changes (new to old):
(12/27) Installed a Blue Tooth Mighty Mouse
(12/26) Installed 10.5.1 update (http://www.apple.com/downloads/macosx/apple/macosx_updates/macosx1051update.html) to eliminate all but one "Warning: SUID file" disk permission warnings. The following post relates: http://discussions.apple.com/thread.jspa?messageID=6030410&#6030410
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http://discussions.apple.com/message.jspa?messageID=6187227#6187227
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This is the log after restarting:
Sat Dec 29 10:14:17 2007
panic(cpu 1 caller 0x001A7BED): Kernel trap at 0x2147f059, type 14=page fault, registers:
CR0: 0x80010033, CR2: 0x2147f059, CR3: 0x010bb000, CR4: 0x00000660
EAX: 0x00000001, EBX: 0x03e4e4e4, ECX: 0x00000000, EDX: 0x03e5e0b0
CR2: 0x2147f059, EBP: 0x217b7dd8, ESI: 0x06283e04, EDI: 0x034f3330
EFL: 0x00010246, EIP: 0x2147f059, CS: 0x00000008, DS: 0x02d00010
Error code: 0x00000010
Backtrace, Format - Frame : Return Address (4 potential args on stack)
0x217b7bc8 : 0x12b0e1 (0x455670 0x217b7bfc 0x133238 0x0)
0x217b7c18 : 0x1a7bed (0x45ea20 0x2147f059 0xe 0x45e1d4)
0x217b7cf8 : 0x19e517 (0x217b7d10 0x1ff2fc 0x217b7dd8 0x2147f059)
0x217b7d08 : 0x2147f059 (0xe 0x48 0xa0010 0x10)
0x217b7dd8 : 0x3a0b44 (0x34f3330 0x1 0x1b158f0 0x7583308)
0x217b7df8 : 0x3a2555 (0x34f3330 0x9 0x0 0x369144)
0x217b7e58 : 0x3a26f3 (0x34f3330 0x1 0x217b7ea8 0x3751a9)
0x217b7e78 : 0x364171 (0x34f3330 0x217b7ec8 0x217b7ec8 0x141c4d)
0x217b7ee8 : 0x364562 (0x35bcab0 0x757c888 0x75832b0 0x2)
0x217b7f28 : 0x36461e (0x0 0x4 0x217b7f5c 0x1)
0x217b7f78 : 0x3da847 (0x75832b0 0x4314860 0x43148a4 0xbffff11c)
0x217b7fc8 : 0x19ea34 (0x4fc0760 0x0 0x1a10b5 0x4fc0760)
No mapping exists for frame pointer
Backtrace terminated-invalid frame pointer 0xbffff348
BSD process name corresponding to current thread: parentalcontrols
Mac OS version:
9B18
Kernel version:
Darwin Kernel Version 9.1.0: Wed Oct 31 17:46:22 PDT 2007; root:xnu-1228.0.2~1/RELEASE_I386
System model name: iMac7,1 (Mac-F42386C8)
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Programs used have been operating without any events. Can someone please explain the error, cause any required resolution?

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How to switch to "Login Window" using cocoa?

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