// WM_NCHITTEST handler
int cef_dark_aero_window::HandleNcHitTest(LPPOINT ptHit)
{
    RECT rectWindow;
    GetWindowRect(&rectWindow);

    if (!::PtInRect(&rectWindow, *ptHit)) 
        return HTNOWHERE;
    
    RECT rectCaption;
    ComputeWindowCaptionRect(rectCaption);
    NonClientToScreen(&rectCaption);

    if (::PtInRect(&rectCaption, *ptHit)) 
        return HTCAPTION;

    RECT rectCloseButton;
    ComputeCloseButtonRect(rectCloseButton);
    NonClientToScreen(&rectCloseButton);

    if (::PtInRect(&rectCloseButton, *ptHit)) 
        return HTCLOSE;

    RECT rectMaximizeButton;
    ComputeMaximizeButtonRect(rectMaximizeButton);
    NonClientToScreen(&rectMaximizeButton);

    if (::PtInRect(&rectMaximizeButton, *ptHit)) 
        return HTMAXBUTTON;

    RECT rectMinimizeButton;
    ComputeMinimizeButtonRect(rectMinimizeButton);
    NonClientToScreen(&rectMinimizeButton);

    if (::PtInRect(&rectMinimizeButton, *ptHit)) 
        return HTMINBUTTON;

    RECT rectSysIcon;
    ComputeWindowIconRect(rectSysIcon);
    NonClientToScreen(&rectSysIcon);

    if (::PtInRect(&rectSysIcon, *ptHit)) 
        return HTSYSMENU;

    if (!IsZoomed()) {

        // Left Border
        if (ptHit->x >= rectWindow.left && ptHit->x <= rectWindow.left + ::kWindowFrameSize)
        {
            // it's important that we know if the mouse is on a corner so that
            //    the right mouse cursor is displayed
            if (ptHit->y <= rectWindow.top + ::kWindowFrameSize)
                 return HTTOPLEFT;
 
            if (ptHit->y >= rectWindow.bottom - ::kWindowFrameSize)
                 return HTBOTTOMLEFT;
 
            return HTLEFT;
        }

        // Right Border
        if (ptHit->x <= rectWindow.right && ptHit->x >= rectWindow.right - ::kWindowFrameSize) 
        {
            // it's important that we know if the mouse is on a corner so that
            //    the right mouse cursor is displayed
            if (ptHit->y <= rectWindow.top + ::kWindowFrameSize)
                return HTTOPRIGHT;
 
            if (ptHit->y >= rectWindow.bottom - ::kWindowFrameSize)
                return HTBOTTOMRIGHT;
 
            return HTRIGHT;
        }

        // Top and Bottom Borders
        if (ptHit->y <= rectWindow.top + ::kWindowFrameSize) 
             return HTTOP;
             
        if (ptHit->y >= rectWindow.bottom - ::kWindowFrameSize)
             return HTBOTTOM;
    }

    RECT rectMenu;
    ComputeRequiredMenuRect(rectMenu);
    NonClientToScreen(&rectMenu);

    if (::PtInRect(&rectMenu, *ptHit))
        return HTMENU;

    // If it's in the menu bar but not actually
    //  on a menu item, then return caption so 
    //  the window can be dragged from the dead space 
    ComputeMenuBarRect(rectMenu);
    NonClientToScreen(&rectMenu);
    if (::PtInRect(&rectMenu, *ptHit))
        return HTCAPTION;

    // Aero requires that we return HTNOWHERE
    return HTNOWHERE;
}
// WM_NCHITTEST handler
int cef_dark_window::HandleNcHitTest(LPPOINT ptHit)
{
    RECT rectWindow;
    GetWindowRect(&rectWindow);

    if (!::PtInRect(&rectWindow, *ptHit)) 
        return HTNOWHERE;
    
    RECT rectClient;
    GetClientRect(&rectClient);
    ClientToScreen(&rectClient);

    if (::PtInRect(&rectClient, *ptHit)) 
        return HTCLIENT;

    RECT rectCaption;
    ComputeWindowCaptionRect(rectCaption);
    NonClientToScreen(&rectCaption);

    if (::PtInRect(&rectCaption, *ptHit)) 
        return HTCAPTION;

    RECT rectCloseButton;
    ComputeCloseButtonRect(rectCloseButton);
    NonClientToScreen(&rectCloseButton);

    if (::PtInRect(&rectCloseButton, *ptHit)) 
        return HTCLOSE;

    RECT rectMaximizeButton;
    ComputeMaximizeButtonRect(rectMaximizeButton);
    NonClientToScreen(&rectMaximizeButton);

    if (::PtInRect(&rectMaximizeButton, *ptHit)) 
        return HTMAXBUTTON;

    RECT rectMinimizeButton;
    ComputeMinimizeButtonRect(rectMinimizeButton);
    NonClientToScreen(&rectMinimizeButton);

    if (::PtInRect(&rectMinimizeButton, *ptHit)) 
        return HTMINBUTTON;

    RECT rectSysIcon;
    ComputeWindowIconRect(rectSysIcon);
    NonClientToScreen(&rectSysIcon);

    if (::PtInRect(&rectSysIcon, *ptHit)) 
        return HTSYSMENU;

    // Left Border
    if (ptHit->x >= rectWindow.left && ptHit->x <= rectWindow.left + ::GetSystemMetrics (SM_CYFRAME))
    {
        // it's important that we know if the mouse is on a corner so that
        //    the right mouse cursor is displayed
        if (ptHit->y <= rectWindow.top + ::GetSystemMetrics (SM_CYFRAME))
             return HTTOPLEFT;
 
        if (ptHit->y >= rectWindow.bottom - ::GetSystemMetrics (SM_CYFRAME))
             return HTBOTTOMLEFT;
 
        return HTLEFT;
    }

    // Right Border
    if (ptHit->x <= rectWindow.right && ptHit->x >= rectWindow.right - ::GetSystemMetrics (SM_CYFRAME)) 
    {
        // it's important that we know if the mouse is on a corner so that
        //    the right mouse cursor is displayed
        if (ptHit->y <= rectWindow.top + ::GetSystemMetrics (SM_CYFRAME))
            return HTTOPRIGHT;
 
        if (ptHit->y >= rectWindow.bottom - ::GetSystemMetrics (SM_CYFRAME))
            return HTBOTTOMRIGHT;
 
        return HTRIGHT;
    }

    // Top and Bottom Borders
    if (ptHit->y <= rectWindow.top + ::GetSystemMetrics (SM_CYFRAME)) 
         return HTTOP;
             
    if (ptHit->y >= rectWindow.bottom - ::GetSystemMetrics (SM_CYFRAME))
         return HTBOTTOM;

    // If it's not in the menu, it's in the caption
    RECT rectMenu;
    ComputeRequiredMenuRect(rectMenu);
    NonClientToScreen(&rectMenu);

    if (::PtInRect(&rectMenu, *ptHit))
        return HTMENU;

    return HTCAPTION;
}