状态栏在最大化后恢复，无法显示，什么原因？

[像我这么帅的只有一个]

状态栏在最大化后，恢复，无法显示。[

LRESULT XXXXXXXXXX::WindowProc(UINT message, WPARAM wParam, LPARAM lParam)
{
	switch(message)
	{
	case WM_SYSCOMMAND:
		{
			//DefWindowProc(hWnd, message, wParam, lParam); 
			if(wParam == SC_RESTORE) 
			{ 
				CWnd *pWnd;
				pWnd = GetDlgItem(IDC_LIST1);    
				CRect crect;
				pWnd->GetClientRect(&crect);
				pWnd->SetWindowPos( NULL,0,0,1215,600,SWP_NOZORDER | SWP_NOMOVE );  //位置不变，高度和宽度拉伸
            
				CRect rect;
				GetClientRect(&rect);
				RepositionBars(AFX_IDW_CONTROLBAR_FIRST,AFX_IDW_CONTROLBAR_LAST,0);显示状态栏
				m_StatBar.MoveWindow(0,rect.bottom-20,rect.right,10);
			} 
			break; 
		}
	}

	return CDialogEx::WindowProc(message, wParam, lParam);

[schlafenhamster]

	case WM_SIZE:
		g_cx=LOWORD(lParam);
		g_cy=HIWORD(lParam);
		// Resize the status bar to fit along the bottom of the client area.
		MoveWindow (m_hwndStatus, 0, g_cy - 10, g_cx, g_cy, TRUE);
// Set the rectangles for the multiple parts of the status bar.
// Make each part 1/4 of the width of the client area.
		m_aWidths [0] = g_cx / 4;
		m_aWidths [1] = g_cx / 2;
		m_aWidths [2] = g_cx - m_aWidths [0];
		m_aWidths [3] = -1;
		SendMessage (m_hwndStatus, SB_SETPARTS, 4, (LPARAM)m_aWidths);
	break;

case WM_SIZE: