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CreateDesktop info  Overview  Group

The CreateDesktop function creates a new desktop on the window station associated with the calling process. It returns a handle that can be used to access the new desktop. The calling process must have an associated window station, either assigned by the system at process creation time or set by SetProcessWindowStation. A desktop is a secure object contained within a window station object. A desktop has a logical display surface and contains windows, menus, and hooks.

HDESK CreateDesktop(

    LPCTSTR lpszDesktop,

// name of the new desktop

    LPCTSTR lpszDevice,

// reserved; must be NULL.

    LPDEVMODE pDevMode,

// reserved; must be NULL

    DWORD dwFlags,

// flags to control interaction with other applications

    DWORD dwDesiredAccess,

// specifies access of returned handle

    LPSECURITY_ATTRIBUTES lpsa

// specifies security attributes of the desktop

   );

Parameters

lpszDesktop
Points to a null-terminated string specifying the name of the desktop to be created. Desktop names are case-insensitive and may not contain backslash characters (\).
lpszDevice
Reserved; must be NULL. The desktop uses the default display driver loaded at boot time.
pDevMode
Reserved; must be NULL.
dwFlags
A bit flag parameter that controls how the calling application will cooperate with other applications on the desktop. This parameter can specify zero or the following value:

Value

Description

DF_ALLOWOTHERACCOUNTHOOK

Allows processes running in other accounts on the desktop to set hooks in this process.

dwDesiredAccess
Specifies the type of access to the desktop. This parameter can be one or more of the following values:

Value

Description

DESKTOP_CREATEMENU

Required to create a menu on the desktop.

DESKTOP_CREATEWINDOW

Required to create a window on the desktop.

DESKTOP_ENUMERATE

Required for the desktop to be enumerated.

DESKTOP_HOOKCONTROL

Required to establish any of the window hooks.

DESKTOP_JOURNALPLAYBACK

Required to perform journal playback on the desktop.

DESKTOP_JOURNALRECORD

Required to perform journal recording on the desktop.

DESKTOP_READOBJECTS

Required to read objects on the desktop.

DESKTOP_SWITCHDESKTOP

Required to activate the desktop using the SwitchDesktop function.

DESKTOP_WRITEOBJECTS

Required to write objects on the desktop.

lpsa
Pointer to a SECURITY_ATTRIBUTES structure that determines whether the returned handle can be inherited by child processes. If lpsa is NULL, the handle cannot be inherited.

The lpSecurityDescriptor member of the structure specifies a security descriptor for the new desktop. If lpsa is NULL, the desktop inherits its security descriptor from the parent window station.

Return Values

If the function succeeds, the return value is a handle to the newly created desktop. If the specified desktop already exists, the function succeeds and returns a handle to the existing desktop.

If the function fails, the return value is NULL. To get extended error information, call GetLastError.

Remarks

The CreateDesktop function returns a handle that can be used to access the desktop.

See Also

SECURITY_ATTRIBUTES, SetProcessWindowStation, SwitchDesktop 

See also:


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