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SetUserObjectSecurity info  Overview  Group

The SetUserObjectSecurity function sets the security of a user object. This can be, for example, a window or a DDE conversation.

BOOL SetUserObjectSecurity(

    HANDLE hObj,

// handle of user object


// address of security information


// address of security descriptor



Identifies a user object for which security information is set.
Points to a SECURITY_INFORMATION structure describing the security information being set.
Points to a SECURITY_DESCRIPTOR structure containing the new security information.

Return Values

If the function succeeds, the return value is nonzero.

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


The SetUserObjectSecurity function applies changes specified in a security descriptor to the security descriptor assigned to a user object. The objectís security descriptor must be in self-relative form. If necessary, this function allocates additional memory to increase the size of the security descriptor.

The SetUserObjectSecurity function is successful only if the following conditions are met:

See Also

GetUserObjectSecurity, SECURITY_DESCRIPTOR, SECURITY_INFORMATION, SetFileSecurity, SetKernelObjectSecurity, SetPrivateObjectSecurity

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