位图作为MDI mainfrm的背景 [英] Bitmap as background to MDI mainfrm

问题描述

在尝试加载其他帧之前，我正在尝试为大型机的背景制作位图图像，但是我没有运气，我还缺少什么?

I am trying to make a bitmap image the background for the mainframe before any other frames are loaded but I'm not having any luck, what am I missing?

BOOL CMainFrame::OnEraseBkgnd(CDC* pDC)
{
    CBitmap m_cbImage;
    COLORREF m_crBack;
    UINT m_uImage;
    m_crBack = RGB(255, 255, 255);
    m_uImage = IDB_SPLASH;

    if ((m_cbImage.m_hObject == NULL) && (m_uImage>0))
    {
        m_cbImage.LoadBitmap(m_uImage);
        m_bFirst = TRUE;
    }
    else
    {
        if (m_bFirst)
        {
            m_bFirst = FALSE;
        }
    }
    CRect rcClient;
    GetClientRect(rcClient);
    pDC->FillSolidRect(rcClient, m_crBack);
    if (m_cbImage.m_hObject != NULL)
    {
        BITMAP sBitmap;
        m_cbImage.GetBitmap(&sBitmap);
        CSize szImage(sBitmap.bmWidth, sBitmap.bmHeight);
        pDC->DrawState(CPoint(0, 0), szImage, &m_cbImage, DST_BITMAP | DSS_NORMAL);
    }
    return TRUE;

}

推荐答案

看起来好像大型机的背景不是真的.大型机通常只是处理:框架.MDI客户区由"MDI客户"窗口处理(该窗口又管理MDI子窗口).

What looks like the background of the mainframe really isn't. The mainframe mostly just handles exactly that: the frame. The MDI client area is handled by a MDI Client window (which, in turn, manages the MDI child windows).

要更改背景图形，请创建一个MDI Client窗口类( CWnd 的公共派生)，并在其 OnEraseBkgnd 中处理该图形.在MainFrame类中创建该类的实例，然后在MainFrame的 OnCreate 中，告诉MDI客户将股票MDI客户窗口子类化:

To change the background drawing, you create a MDI Client window class (public derivative of CWnd), and handle the drawing in its OnEraseBkgnd. Create an instance of that class in your MainFrame class, and in your MainFrame's OnCreate, tell your MDI client to subclass the stock MDI client window:

myClient.SubclassWindow(m_hWndMDIClient);

这篇关于位图作为MDI mainfrm的背景的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！