＋设为首页 ＋添加到收藏夹
题目说的有点乱.我是做了一个类似word的程序,在没有打开一个文档的时候,在父窗口中显示一幅画面,一直保留着,不知如何实现?
不知道是不是理解了你的意思，下面是一个类。
//bmp_clnt.cpp
#include "stdafx.h"
#include "Bmp_Clnt.h"
#ifdef _DEBUG
#define new DEBUG_NEW
#undef THIS_FILE
static char THIS_FILE[] = __FILE__;
#endif
/////////////////////////////////////////////////////////////////////////////
// CBitmapClient
CBitmapClient::CBitmapClient()
{
VERIFY(m_bmp.LoadBitmap(IDB_BKG01));
VERIFY(m_bkg.LoadBitmap(IDB_BKG02));
}
CBitmapClient::~CBitmapClient()
{
}
BEGIN_MESSAGE_MAP(CBitmapClient, CWnd)
//{{AFX_MSG_MAP(CBitmapClient)
ON_WM_SIZE()
ON_WM_ERASEBKGND()
//}}AFX_MSG_MAP
END_MESSAGE_MAP()
/////////////////////////////////////////////////////////////////////////////
// CBitmapClient message handlers
void CBitmapClient::OnSize(UINT nType, int cx, int cy)
{
CWnd::OnSize(nType, cx, cy);
// TODO: Add your message handler code here
RedrawWindow(NULL,NULL,
RDW_INVALIDATE | RDW_ERASE | RDW_ERASENOW | RDW_ALLCHILDREN);
return;
}
BOOL CBitmapClient::OnEraseBkgnd(CDC* pDC)
{
// TODO: Add your message handler code here and/or call default
BITMAP bm;
CDC dcMem;
CWnd::OnEraseBkgnd(pDC);
CRect rect;
GetClientRect(rect);
VERIFY(m_bmp.GetObject(sizeof(bm),(LPVOID)&bm));
dcMem.CreateCompatibleDC(pDC);
CBitmap* pOldBMP = (CBitmap* )dcMem.SelectObject(&m_bmp);
int x,y;
x = rect.right;
while( (x-rect.left+bm.bmHeight)>0 ){
y = rect.bottom;
x -= bm.bmHeight;
while( (y-rect.top+bm.bmWidth)>0 ){
y -= bm.bmWidth;
pDC -> BitBlt( x,y,
bm.bmWidth,
bm.bmHeight,
&dcMem,
0,0,
SRCCOPY);
}
}
VERIFY(m_bkg.GetObject(sizeof(bm),(LPVOID)&bm));
int n = GetLastError();
dcMem.SelectObject(&m_bkg);
pDC -> BitBlt( rect.right-bm.bmWidth,rect.bottom-bm.bmHeight,
bm.bmWidth,
bm.bmHeight,
&dcMem,
0,0,
SRCCOPY);
dcMem.SelectObject(pOldBMP);
return TRUE;
}
//bmp_clnt.h
#if !defined(AFX_BMP_CLNT_H__4F6F6142_3F2E_11D1_8B50_00002100070B__INCLUDED_)
#define AFX_BMP_CLNT_H__4F6F6142_3F2E_11D1_8B50_00002100070B__INCLUDED_
#if _MSC_VER >= 1000
#pragma once
#endif // _MSC_VER >= 1000
// Bmp_Clnt.h : header file
//
/////////////////////////////////////////////////////////////////////////////
// CBitmapClient window
class CBitmapClient : public CWnd
{
// Construction
public:
CBitmapClient();
// Attributes
public:
CBitmap m_bmp;//前景图，我用来放置公司标志
CBitmap m_bkg;//背景图
// Operations
public:
// Overrides
// ClassWizard generated virtual function overrides
//{{AFX_VIRTUAL(CBitmapClient)
//}}AFX_VIRTUAL
// Implementation
public:
virtual ~CBitmapClient();
// Generated message map functions
protected:
//{{AFX_MSG(CBitmapClient)
afx_msg void OnSize(UINT nType, int cx, int cy);
afx_msg BOOL OnEraseBkgnd(CDC* pDC);
//}}AFX_MSG
DECLARE_MESSAGE_MAP()
};
/////////////////////////////////////////////////////////////////////////////
//{{AFX_INSERT_LOCATION}}
// Microsoft Developer Studio will insert additional declarations immediately before the previous line.
#endif // !defined(AFX_BMP_CLNT_H__4F6F6142_3F2E_11D1_8B50_00002100070B__INCLUDED_)
在mainfrm.h中定义
CBitmapClient m_wndClient;
在mainfrm.cpp中的OnCreate函数中加入
if (!m_wndClient.SubclassWindow(m_hWndMDIClient)){
TRACE("fAILED TO SUBCLASS mdi CLIENT WINDOW.\n");
return -1;
}
如果对了别忘记给分
