How to Create an Application that has Office Style

step 1:
#include <XTToolkitPro.h>

step 2:
change your base class to be CXTPMDIFrameWnd for MDI applications or CXTPFrameWnd for SDI applications:
class CMainFrame : public CXTPFrameWnd
{
    ...
};

step 3:
If you plan to override either PreTranslateMessage or OnWndMsg make sure that you call the CXTPFrameWnd or CXTPMDIFrameWnd base class, for example:
BOOL CMainFrame::PreTranslateMessage(MSG* pMsg)
{   
    return CXTPFrameWnd::PreTranslateMessage(pMsg);
}

BOOL CMainFrame::OnCmdMsg(UINT nID, int nCode,void* pExtra, AFX_CMDHANDLERINFO* pHandlerInfo)
{
   
    return CXTPFrameWnd::OnCmdMsg(nID, nCode, pExtra, pHandlerInfo);
}

step 4:
Add the following code to the int CMainFrame::OnCreate(LPCREATESTRUCT lpCreateStruct) function:
int CMainFrame::OnCreate(LPCREATESTRUCT lpCreateStruct)
{
    if (CXTPFrameWnd::OnCreate(lpCreateStruct) == -1)
    {
        return -1;
    }

    if (!m_wndStatusBar.Create(this) ||!m_wndStatusBar.SetIndicators(indicators,sizeof(indicators)/sizeo(UINT)))
    {
        TRACE0("Failed to create status bar/n");
        return -1;      
    }

    if (!InitCommandBars())
    {
        return -1;
    }

    CXTPCommandBars* pCommandBars = GetCommandBars();
    if(pCommandBars == NULL)
    {
        TRACE0("Failed to create command bars object./n");
        return -1;     
    }

    CXTPCommandBar* pMenuBar = pCommandBars->SetMenu(_T("Menu Bar"), IDR_MAINFRAME);
    if(pMenuBar == NULL)
    {
        TRACE0("Failed to create menu bar./n");
        return -1;     
    }

    CXTPToolBar* pToolBar = (CXTPToolBar*)pCommandBars->Add(_T("Standard"),xtpBarTop);
    if (!pToolBar || !pToolBar->LoadToolBar(IDR_MAINFRAME))
    {
        TRACE0("Failed to create toolbar/n");
        return -1;
    }

    // Set Office 2003 Theme
    CXTPPaintManager::SetTheme(xtpThemeOffice2003);

    return 0;
}