Called to ask the package if the shell can be closed.
Namespace:  Microsoft.VisualStudio.Shell
Assembly:  Microsoft.VisualStudio.Shell.12.0 (in Microsoft.VisualStudio.Shell.12.0.dll)
Syntax
'Declaration
Protected Overridable Function QueryClose ( _
    <OutAttribute> ByRef canClose As Boolean _
) As Integer
protected virtual int QueryClose(
    out bool canClose
)
protected:
virtual int QueryClose(
    [OutAttribute] bool% canClose
)
abstract QueryClose : 
        canClose:bool byref -> int  
override QueryClose : 
        canClose:bool byref -> int
protected function QueryClose(
    canClose : boolean
) : int
Parameters
- canClose 
 Type: Boolean%- [out] Returns true if the shell can be closed, otherwise false. 
Return Value
Type: Int32
S_OK if the method succeeded, otherwise an error code.
Remarks
By default this method returns canClose as true and S_OK.
.NET Framework Security
- Full trust for the immediate caller. This member cannot be used by partially trusted code. For more information, see Using Libraries from Partially Trusted Code.