界面背景色修改没效果

绿色盒子 2020-01-02 11:19:44

MFC界面背景色修改没效果
非模态界面
尝试了很多方式
包括



//在OnEraseBkgnd

	//设置brush为希望的背景颜色

	CBrush backBrush(RGB(120,120,120));



	//保存旧的brush

	CBrush* pOldBrush = pDC->SelectObject(&backBrush);

	CRect rect;

	pDC->GetClipBox(&rect);



	//画需要的区域

	pDC->PatBlt(rect.left, rect.top, rect.Width(), rect.Height(), PATCOPY);

	pDC->SelectObject(pOldBrush);



	return TRUE;

//OnPaint

        CPaintDC dc(this); // device context for painting

	CRect Rect;

	GetClientRect(Rect);

	CRect rectClient;

	CDC dcMen, dcBkgnd;

	CBitmap bitmapTemp, *pOldBitmap;

	GetClientRect(&rectClient);

	bitmapTemp.CreateCompatibleBitmap(&dc, rectClient.Width(), rectClient.Height());

	dcMen.CreateCompatibleDC(&dc);

	pOldBitmap = dcMen.SelectObject(&bitmapTemp);

	dcMen.FillSolidRect(rectClient,RGB(120,120,120));   //主要的作图操作

	dc.BitBlt(0, 0, rectClient.Width(), rectClient.Height(), &dcMen, 0, 0, SRCCOPY);//绘制图片到主DC

	dcMen.SelectObject(pOldBitmap);//内存复位

	bitmapTemp.DeleteObject();

	pOldBitmap=NULL;

//OnCtlColor

        HBRUSH hbr = CDialogEx::OnCtlColor(pDC, pWnd, nCtlColor);

	if(nCtlColor == CTLCOLOR_DLG)

	{   

		pDC->SetTextColor(RGB(255,255,255));//字体颜色

		pDC->SetBkColor(RGB(120,120,120));

		hbr=CreateSolidBrush(RGB(120,120,120));//控件的背景色

	} 

	return hbr;

以上都没有效果

该界面与普通界面唯一的不同点就是这是个子界面，先放到容器m_Forms中再创建显示的，创建和显示的代码如下



    ASSERT(ix <= m_Forms.GetUpperBound());

    if (ix > m_Forms.GetUpperBound()) return(false); // does not exist



    CDialogEx* pDlg;

	if(ix == m_nActiveForm)

	{

		if (m_nActiveForm != -1)

		{

			pDlg = m_Forms.GetAt(m_nActiveForm);			

			pDlg->ShowWindow(SW_SHOW);

			pDlg->Invalidate();

                        pDlg->RedrawWindow();	



		}

		return TRUE; //new == old

	}

	//hide old

    if (m_nActiveForm != -1)

	{

        pDlg = m_Forms.GetAt(m_nActiveForm);

        ASSERT(pDlg != NULL);

		if(pDlg->GetSafeHwnd())

		{

			TRACE0("Close child window\n");

			pDlg->SendMessage(WM_CLOSE);

		}

		m_nActiveForm = -1; // set active is null;

    }

    m_nActiveForm = ix; // this is the active one now;

	if(ix == -1) return TRUE; //hide all

	//

    pDlg = m_Forms.GetAt(m_nActiveForm);

    ASSERT(pDlg != NULL);

	if(pDlg->GetSafeHwnd())

	{

		TRACE0("Show child window\n");

		pDlg->MoveWindow(m_Rect);

		pDlg->ShowWindow(SW_SHOW);

		pDlg->Invalidate();

		pDlg->RedrawWindow();

		return TRUE;

	}

	//create 

	TRACE0("create child window\n");

	pDlg->Create(m_dwIdArray[m_nActiveForm],m_pParentWnd);

	CRect r;

    int x,y;

    pDlg->GetWindowRect(&r); // Get the size and position of the dialog in screen coordinates

    if (m_bCentered) {

        x = m_Rect.left - r.left + ((m_Rect.Width() - r.Width()) / 2);

        y = m_Rect.top - r.top + ((m_Rect.Height() - r.Height()) / 2);

    }

    else 

	{ // just use the top left corner

        x = m_Rect.left - r.left;

        y = m_Rect.top - r.top;

    }

	pDlg->SetWindowPos(m_pParentWnd,x,y, r.Width(), r.Height(), SWP_NOZORDER);

	pDlg->MoveWindow(m_Rect);

	pDlg->ShowWindow(SW_SHOW);

	pDlg->Invalidate();

	pDlg->RedrawWindow();