win32 创建工具条控件不显示,不知道哪错了,请大神指点下

case WM_CREATE:
	{
		HINSTANCE hInstance = ((LPCREATESTRUCT)lParam)->hInstance;

		HWND hReaBar = CreateWindowEx(WS_EX_CLIENTEDGE,REBARCLASSNAME, NULL,
			WS_CHILD | WS_VISIBLE | WS_CLIPCHILDREN | RBS_VARHEIGHT | RBS_BANDBORDERS,
			0, 0, 0, 0, hWnd, NULL, hInstance, 0);

		HWND hBtn = CreateWindow(WC_BUTTON, L"idok",
			WS_CHILD | WS_VISIBLE | BS_PUSHBUTTON,
			0, 0, 0, 0, hReaBar, (HMENU)1001, hInstance, 0);

		HWND hEdit = CreateWindow(WC_EDIT, L"edit",
			WS_CHILD | WS_VISIBLE | WS_BORDER | ES_MULTILINE,
			0, 0, 0, 0, hReaBar, (HMENU)1002, hInstance, 0);

		REBARBANDINFO rb = { 0};
		rb.cbSize = sizeof(REBARBANDINFO);
		rb.fMask = RBBIM_STYLE | RBBIM_TEXT
			| RBBIM_CHILD | RBBIM_CHILDSIZE;
		rb.fStyle = RBBS_GRIPPERALWAYS;
		rb.lpText = (LPTSTR)L"带区1";
		rb.hwndChild = hEdit;
		rb.cxMinChild = 100;
		rb.cyMinChild = 30;
		SendMessage(hReaBar, RB_INSERTBAND, 0, (LPARAM)&rb);

		rb.lpText = (LPTSTR)L"带区2";
		rb.hwndChild = hBtn;
		SendMessage(hReaBar, RB_INSERTBAND, 1, (LPARAM)&rb);

		break;
	}

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