activatekeyboardlayout and loadkeyboardlayout not working

please tell me why this code is not working.

Code:

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// key_sample.cpp : Defines the entry point for the console application.
//
#include <stdafx.h>
using namespace std;
// Keyboard layout structure
class _KeyboardLayout
{
public:
        HKL hBengali;
        bool bBengali;
        HKL hEnglish;
        bool bEnglish;
        _KeyboardLayout();
} ;

_KeyboardLayout::_KeyboardLayout()
{
// setting default values (as not installed = false)
bBengali=false;
bEnglish=false;
}


int main()
{
       
        _KeyboardLayout KeyboardLayout;
        // Get layout’s count
TCHAR szKeyboard[KL_NAMELENGTH];
int nBuff=::GetKeyboardLayoutList(0, NULL);
int nKeyboard;
HKL * phkl;
if((phkl = new HKL[nBuff])==NULL)
{
        cout<<"Out of Memory !";
        return 1;
}

// Get and parse layout items
int x=::GetKeyboardLayoutList(nBuff,phkl);
// iterate through list to check needed layouts
for(nKeyboard=0; nKeyboard<nBuff; nKeyboard++)
{
        ::ActivateKeyboardLayout(phkl[nKeyboard], KLF_SETFORPROCESS);
        GetKeyboardLayoutName(szKeyboard);
        if(wcscmp(szKeyboard,_T("00000445"))==0)
        {
                KeyboardLayout.bBengali=true;
                KeyboardLayout.hBengali=phkl[nKeyboard];
                cout<<phkl[nKeyboard];
        }
        if(wcscmp(szKeyboard,_T("00000409"))==0)
        {
                KeyboardLayout.bEnglish=true;
                KeyboardLayout.hEnglish=phkl[nKeyboard];
        }

}
delete [] phkl;

if(!KeyboardLayout.bBengali)
        cout<<"error in bengali layout";
        //MessageBox(NULL,_T("Bengali keyboard layout not installed"),_T("Warning"),MB_OK|MB_ICONEXCLAMATION);
if(!KeyboardLayout.bEnglish)
        MessageBox(NULL,_T("English (USA) keyboard layout not installed"),_T("Warning"),MB_OK|MB_ICONEXCLAMATION);
else
{}
cout<<endl<<::LoadKeyboardLayoutW(_T("00000445"),KLF_ACTIVATE | KLF_SETFORPROCESS);
if(KeyboardLayout.bBengali)
{
        cout<<endl<<::ActivateKeyboardLayout(HKL(HKL_PREV), KLF_REORDER);
        //cout<<endl<<::ActivateKeyboardLayout(HKL(HKL_PREV), KLF_ACTIVATE);
}
//CString strLCID = _T("00000445");
//HKL hNewKeyboard = LoadKeyboardLayout(_T("00000445"),KLF_SUBSTITUTE_OK);
//HKL hkl = ActivateKeyboardLayout(hNewKeyboard,0);
//cout<<::PostMessage( NULL, WM_INPUTLANGCHANGEREQUEST, 1, 0x04450445 );


//cout<<endl<<GetLastError();
getchar();
getchar();
return 0;
}

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