WndProc: 0x00000046 WM_WINDOWPOSCHANGING
WndProc: 0x00000024 WM_GETMINMAXINFO
WndProc: 0x00000083 WM_NCCALCSIZE
WndProc: 0x00000093 WM_UAHINITMENU
===Flickering happens between these two messages!===
WndProc: 0x00000085 WM_NCPAINT
WndProc: 0x00000093 WM_UAHINITMENU
WndProc: 0x00000093 WM_UAHINITMENU
WndProc: 0x00000091 WM_UAHDRAWMENU
WndProc: 0x00000092 WM_UAHDRAWMENUITEM
WndProc: 0x00000092 WM_UAHDRAWMENUITEM
WndProc: 0x00000092 WM_UAHDRAWMENUITEM
WndProc: 0x00000014 WM_ERASEBKGND
WndProc: 0x00000047 WM_WINDOWPOSCHANGED
WndProc: 0x00000003 WM_MOVE
WndProc: 0x00000005 WM_SIZE

HWND g_hWndList = NULL;
#define LIST_WIDTH  500
#define LIST_HEIGHT 400

void GetListRect(HWND hWnd, RECT& rectList)
{
    GetClientRect(hWnd, &rectList);
    InflateRect(&rectList, -10, -10);
    rectList.left = rectList.right - LIST_WIDTH;
    rectList.bottom = rectList.top + LIST_HEIGHT;
}

BOOL InitInstance(HINSTANCE hInstance, int nCmdShow)
{
   hInst = hInstance; // Store instance handle in our global variable

   HWND hWnd = CreateWindowW(szWindowClass, szTitle, WS_OVERLAPPEDWINDOW,
      CW_USEDEFAULT, 0, CW_USEDEFAULT, 0, nullptr, nullptr, hInstance, nullptr);

   if (!hWnd)
   {
      return FALSE;
   }

   RECT rectList;
   GetListRect(hWnd, rectList);
   g_hWndList = CreateWindow(WC_LISTVIEW, TEXT("listL"), WS_CHILD | WS_VISIBLE | WS_BORDER | WS_TABSTOP | LVS_REPORT,
       rectList.left, rectList.top, rectList.right - rectList.left, rectList.bottom - rectList.top, hWnd, nullptr, hInstance, nullptr);

   ShowWindow(hWnd, nCmdShow);
   UpdateWindow(hWnd);

   return TRUE;
}

LRESULT CALLBACK WndProc(HWND hWnd, UINT message, WPARAM wParam, LPARAM lParam)
{
    switch (message)
    {
    case WM_COMMAND:
        {
            int wmId = LOWORD(wParam);
            // Parse the menu selections:
            switch (wmId)
            {
            case IDM_ABOUT:
                // Resize the window instead of showing "About" dialog
                //DialogBox(hInst, MAKEINTRESOURCE(IDD_ABOUTBOX), hWnd, About);
                {
                    RECT rect;
                    GetWindowRect(hWnd, &rect);
                    rect.left += 100;
                    SetWindowPos(hWnd, nullptr, rect.left, rect.top, rect.right - rect.left, rect.bottom - rect.top, SWP_NOACTIVATE | SWP_NOZORDER);
                }
                break;
            }
        }
        break;
    case WM_WINDOWPOSCHANGED:
        {
            RECT rectList;
            GetListRect(hWnd, rectList);
            SetWindowPos(g_hWndList, nullptr, rectList.left, rectList.top, 0, 0, SWP_NOACTIVATE | SWP_NOZORDER | SWP_NOSIZE);
        }
        break;
    }
}

BOOL g_bExpandingShrinking = FALSE;

void OnCommandExpandShrinkWindow(HWND hWnd, BOOL bExpand)
{
    RECT rect;
    GetWindowRect(hWnd, &rect);
    rect.left += bExpand ? -100 : 100;
    UINT nFlags = SWP_NOZORDER | SWP_NOACTIVATE;
    g_bExpandingShrinking = TRUE;
    SetWindowPos(hWnd, nullptr, rect.left, rect.top, rect.right - rect.left, rect.bottom - rect.top, nFlags);
    g_bExpandingShrinking = FALSE;
}

LRESULT OnNcCalcSize(HWND hWnd, WPARAM wParam, LPARAM lParam)
{
    NCCALCSIZE_PARAMS* lpncsp = reinterpret_cast<NCCALCSIZE_PARAMS*>(lParam);
    LRESULT res;
    if (wParam && g_bExpandingShrinking)
    {
        // let DefWindowProc calculate the new client rectangle
        res = DefWindowProc(hWnd, WM_NCCALCSIZE, wParam, lParam);
        // copy the content of the right list control
        GetWindowRect(g_hwndListRight, lpncsp->rgrc + 2);
        lpncsp->rgrc[1] = lpncsp->rgrc[2];
        res = WVR_VALIDRECTS;
    }
    else
    {
        res = DefWindowProc(hWnd, WM_NCCALCSIZE, wParam, lParam);
    }
    return res;
}