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标题:[求助]请问这个程序为什么出不来图片???
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Michelle25
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[求助]请问这个程序为什么出不来图片???

// testDlg.cpp : implementation file
//
#include <windows.h>

#include "stdafx.h"
#include "test.h"
#include "testDlg.h"

#include "math.h"

#include <iostream>
#include "stdlib.h"
#include <exception>
#pragma comment(lib,"inpout32.lib")

#ifdef _DEBUG
#define new DEBUG_NEW
#undef THIS_FILE
static char THIS_FILE[] = __FILE__;
#endif

short _stdcall Inp32(short PortAddress);
void _stdcall Out32(short PortAddress, short data);
double m[100];

/////////////////////////////////////////////////////////////////////////////
// CAboutDlg dialog used for App About

class CAboutDlg : public CDialog
{
public:
CAboutDlg();

// Dialog Data
//{{AFX_DATA(CAboutDlg)
enum { IDD = IDD_ABOUTBOX };
//}}AFX_DATA

// ClassWizard generated virtual function overrides
//{{AFX_VIRTUAL(CAboutDlg)
protected:
virtual void DoDataExchange(CDataExchange* pDX); // DDX/DDV support
//}}AFX_VIRTUAL

// Implementation
protected:
//{{AFX_MSG(CAboutDlg)
//}}AFX_MSG
DECLARE_MESSAGE_MAP()
};

CAboutDlg::CAboutDlg() : CDialog(CAboutDlg::IDD)
{
//{{AFX_DATA_INIT(CAboutDlg)
//}}AFX_DATA_INIT
}

void CAboutDlg::DoDataExchange(CDataExchange* pDX)
{
CDialog::DoDataExchange(pDX);
//{{AFX_DATA_MAP(CAboutDlg)
//}}AFX_DATA_MAP
}

BEGIN_MESSAGE_MAP(CAboutDlg, CDialog)
//{{AFX_MSG_MAP(CAboutDlg)
// No message handlers
//}}AFX_MSG_MAP
END_MESSAGE_MAP()

/////////////////////////////////////////////////////////////////////////////
// CTestDlg dialog

CTestDlg::CTestDlg(CWnd* pParent /*=NULL*/)
: CDialog(CTestDlg::IDD, pParent)
{
//{{AFX_DATA_INIT(CTestDlg)
// NOTE: the ClassWizard will add member initialization here
//}}AFX_DATA_INIT
// Note that LoadIcon does not require a subsequent DestroyIcon in Win32
m_hIcon = AfxGetApp()->LoadIcon(IDR_MAINFRAME);
}

void CTestDlg::DoDataExchange(CDataExchange* pDX)
{
CDialog::DoDataExchange(pDX);
//{{AFX_DATA_MAP(CTestDlg)
// NOTE: the ClassWizard will add DDX and DDV calls here
//}}AFX_DATA_MAP
}

BEGIN_MESSAGE_MAP(CTestDlg, CDialog)
//{{AFX_MSG_MAP(CTestDlg)
ON_WM_SYSCOMMAND()
ON_WM_PAINT()
ON_WM_QUERYDRAGICON()
ON_WM_TIMER()
ON_WM_DESTROY()
//}}AFX_MSG_MAP
END_MESSAGE_MAP()

/////////////////////////////////////////////////////////////////////////////
// CTestDlg message handlers

BOOL CTestDlg::OnInitDialog()
{
CDialog::OnInitDialog();

// Add "About..." menu item to system menu.

// IDM_ABOUTBOX must be in the system command range.
ASSERT((IDM_ABOUTBOX & 0xFFF0) == IDM_ABOUTBOX);
ASSERT(IDM_ABOUTBOX < 0xF000);

CMenu* pSysMenu = GetSystemMenu(FALSE);
if (pSysMenu != NULL)
{
CString strAboutMenu;
strAboutMenu.LoadString(IDS_ABOUTBOX);
if (!strAboutMenu.IsEmpty())
{
pSysMenu->AppendMenu(MF_SEPARATOR);
pSysMenu->AppendMenu(MF_STRING, IDM_ABOUTBOX, strAboutMenu);
}
}

// Set the icon for this dialog. The framework does this automatically
// when the application's main window is not a dialog
SetIcon(m_hIcon, TRUE); // Set big icon
SetIcon(m_hIcon, FALSE); // Set small icon

// TODO: Add extra initialization here

return TRUE; // return TRUE unless you set the focus to a control
}

void CTestDlg::OnSysCommand(UINT nID, LPARAM lParam)
{
if ((nID & 0xFFF0) == IDM_ABOUTBOX)
{
CAboutDlg dlgAbout;
dlgAbout.DoModal();
}
else
{
CDialog::OnSysCommand(nID, lParam);
}
}

// If you add a minimize button to your dialog, you will need the code below
// to draw the icon. For MFC applications using the document/view model,
// this is automatically done for you by the framework.

void CTestDlg::OnPaint()
{
if (IsIconic())
{
CPaintDC dc(this); // device context for painting

SendMessage(WM_ICONERASEBKGND, (WPARAM) dc.GetSafeHdc(), 0);

// Center icon in client rectangle
int cxIcon = GetSystemMetrics(SM_CXICON);
int cyIcon = GetSystemMetrics(SM_CYICON);
CRect rect;
GetClientRect(&rect);
int x = (rect.Width() - cxIcon + 1) / 2;
int y = (rect.Height() - cyIcon + 1) / 2;

// Draw the icon
dc.DrawIcon(x, y, m_hIcon);
}
else
{
}
}

// The system calls this to obtain the cursor to display while the user drags
// the minimized window.
HCURSOR CTestDlg::OnQueryDragIcon()
{
return (HCURSOR) m_hIcon;
}


void CTestDlg::OnTimer(UINT nIDEvent)
{
// TODO: Add your message handler code here and/or call default
int a,x=0,y=0,z=0,j=0;
int i;
double v;

for(i=0;i<100;i++)
{

Out32(0x378,0); Sleep(10);
Out32(0x378,0x20);
do{a=Inp32(0x379);}while(a&0x8==0);

Out32(0x378,0x40);Sleep(1);
x=Inp32(0x379); x=x/16;

Out32(0x378,0x60);Sleep(1);
y=Inp32(0x379); y=y/16;

Out32(0x378,0x80);Sleep(1);
z=Inp32(0x379); z=z/16;

j=x*256+y*16+z;
v=10.0*j/4096-5;
m[i]=v; //存放

}


CDialog::OnTimer(nIDEvent);
}


BOOL CTestDlg::DrawBitmap(CDC *pDC)
{
//CDC *pDC;//屏幕绘图设备
CDC memDC;//内存绘图设备
CRect rect;
//获取绘制坐标的文本框

//内存绘图
CBitmap memBitmap;
CBitmap* pOldBmp=NULL;

//创建内存绘图
memDC.CreateCompatibleDC(pDC);
memBitmap.CreateCompatibleBitmap(pDC,rect.right,rect.bottom);
pOldBmp=memDC.SelectObject(&memBitmap);
memDC.BitBlt(rect.left,rect.top,rect.right,rect.bottom,pDC,0,0,SRCCOPY);

memDC.MoveTo(0,rect.bottom/2); //**draw on the update point

//自定义绘图
int t;
double u;
for(t=0;t<200;t++)
{
u=m[t+1];
memDC.LineTo(t,u);
}
//把内存绘图拷贝到屏幕
pDC->BitBlt(rect.left,rect.top,rect.right,rect.bottom,&memDC,0,0,SRCCOPY);
memDC.SelectObject(pOldBmp);
memDC.DeleteDC();
memBitmap.DeleteObject();
return CTestDlg::DrawBitmap(pDC);
}

void CTestDlg::OnDestroy()
{
CDialog::OnDestroy();

// TODO: Add your message handler code here
KillTimer(1);
}

搜索更多相关主题的帖子: include windows short 
2006-08-30 08:40
Michelle25
Rank: 1
等 级:新手上路
帖 子:8
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注 册:2006-8-28
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得分:0 
结果是一个框,没有图
2006-08-30 08:48
飞雪随风
Rank: 1
等 级:新手上路
帖 子:13
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注 册:2006-8-31
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加个刷新试试Invalidate();
2006-08-31 10:50
快速回复:[求助]请问这个程序为什么出不来图片???
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