帮忙分析一下为什么程序运行100多小时候死机

前阵子找程序的内存泄露找半天。。结果是调用GetTextExtentPoint32这个函数是传了个GetDC 进去。。忘记ReleaseDC

CARM_181View::CARM_181View()
{
// TODO: add construction code here
// TODO: 在此处添加构造代码
m_serialPort.OpenPort(this,_T("COM2:"),9600,8,1,0); //初始化串口设置
m_initCmd = 0;
m_hang = 100; // 当前行数
m_lie = 100;  //当前列
m_cmd = 0;  //当前命令
m_counter = 0;
for(int i=0;i<12;i++)
for(int j=0;j<40;j++)
m_arrayAll[12][40] = 32;//32为空格
VERIFY(font.CreateFont(
FONTHEIGHT,                 // nHeight
14,                         // nWidth
0,                         // nEscapement
0,                         // nOrientation
FW_NORMAL,                 // nWeight
FALSE,                     // bItalic
FALSE,                     // bUnderline
0,                         // cStrikeOut
ANSI_CHARSET,              // nCharSet
OUT_RASTER_PRECIS,        // nOutPrecision
CLIP_DEFAULT_PRECIS,       // nClipPrecision
CLEARTYPE_QUALITY,  // nQuality
FIXED_PITCH | FF_MODERN,  // nPitchAndFamily
_T("Courer New")));                 // lpszFacename
VERIFY(font_Chinese.CreateFont(
FONTHEIGHT-2,                 // nHeight
14,                         // nWidth
0,                         // nEscapement
0,                         // nOrientation
FW_NORMAL,                 // nWeight
FALSE,                     // bItalic
FALSE,                     // bUnderline
0,                         // cStrikeOut
GB2312_CHARSET,              // nCharSet
OUT_RASTER_PRECIS,        // nOutPrecision
CLIP_DEFAULT_PRECIS,       // nClipPrecision
DEFAULT_QUALITY,  // nQuality
FIXED_PITCH | FF_MODERN,  // nPitchAndFamily
_T("宋体")));                 // lpszFacename
VERIFY(font_pDC.CreateFont(
19,                // nHeight
8,                        // nWidth
0,                         // nEscapement
0,                         // nOrientation
FW_SEMIBOLD,                 // nWeight
FALSE,                     // bItalic
FALSE,                     // bUnderline
0,                         // cStrikeOut
CHINESEBIG5_CHARSET,       // nCharSet
OUT_RASTER_PRECIS,         // nOutPrecision
CLIP_DEFAULT_PRECIS,       // nClipPrecision
DEFAULT_QUALITY,           // nQuality
FIXED_PITCH | FF_MODERN,   // nPitchAndFamily
_T("宋体")));              // lpszFacename
pen.CreatePen(PS_SOLID, 2, RGB(255,0,0));
}CARM_181View::~CARM_181View()
{
MMRESULT mmr=timeKillEvent(m_TimerID);
    if(mmr==TIMERR_NOERROR )
    {
        m_TimerID=NULL;
        mmr=timeEndPeriod(m_wTimerRes);
    }
dcShow.Detach();
}BOOL CARM_181View::PreCreateWindow(CREATESTRUCT& cs)
{
// TODO: Modify the Window class or styles here by modifying
//  the CREATESTRUCT cs return CView::PreCreateWindow(cs);
}/////////////////////////////////////////////////////////////////////////////
// CARM_181View drawingvoid CARM_181View::OnDraw(CDC* pDC)
{
CARM_181Doc* pDoc = GetDocument();
ASSERT_VALID(pDoc);
// TODO: add draw code for native data here
pDC->MoveTo(0,480);
pDC->LineTo(642,480);
pDC->LineTo(642,0);
// pDC->MoveTo(0,80);
// pDC->LineTo(642,80);
pDC->MoveTo(39,0);
pDC->LineTo(39,480);
pDC->MoveTo(600,0);
pDC->LineTo(600,480);
int i = 0;
for(i=0;i < 4;i++)   //画左边4个指示灯
{
pDC->Ellipse(5,(i+1)*80,35,(i+1)*80+30);
}
for(i=0;i < 4;i++) //画右边4个指示灯
{
pDC->Ellipse(605,(i+1)*80,635,(i+1)*80+30);
} int xLcd = 5;
int yLcd = 120;
pDC->ExtTextOut(xLcd,yLcd,ETO_CLIPPED,NULL,_T("关节"),NULL);
pDC->ExtTextOut(xLcd,yLcd+80,ETO_CLIPPED,NULL,_T("直角"),NULL);
pDC->ExtTextOut(xLcd,yLcd+160,ETO_CLIPPED,NULL,_T("工具"),NULL);
pDC->ExtTextOut(xLcd,yLcd+240,ETO_CLIPPED,NULL,_T("用户"),NULL);
xLcd = 605;
pDC->ExtTextOut(xLcd,yLcd,ETO_CLIPPED,NULL,_T("高速"),NULL);
pDC->ExtTextOut(xLcd,yLcd+80,ETO_CLIPPED,NULL,_T("中速"),NULL);
pDC->ExtTextOut(xLcd,yLcd+160,ETO_CLIPPED,NULL,_T("低速"),NULL);
pDC->ExtTextOut(xLcd,yLcd+240,ETO_CLIPPED,NULL,_T("微动"),NULL);
// pDC->SelectObject(RGB(255,255,0));
CPen pen(PS_SOLID, 2, RGB(0,255,i*10));
pDC->SelectObject(&pen);
for(i=0;i<24;i++)
{
pDC->MoveTo(40,i);
pDC->LineTo(600,i);
}

// CString stradsf("如果设置为如果设置为如果设置为如果设置为");
// pDC->SelectObject(&font);
// pDC->ExtTextOut(40,240,ETO_CLIPPED,NULL,stradsf,NULL);
pDC->SelectObject(&font_pDC);
// CPen pen_pDC(PS_SOLID,3,RGB(0,255,0));
// pDC->SelectObject(&pen_pDC);
pDC->SetTextColor(RGB(10,255,190));
pDC->ExtTextOut(5,20,ETO_CLIPPED,NULL,_T("坐标"),NULL);
pDC->ExtTextOut(605,20,ETO_CLIPPED,NULL,_T("速度"),NULL);}/////////////////////////////////////////////////////////////////////////////
// CARM_181View diagnostics

LRESULT CARM_181View::OnReceiveData(WPARAM ch1, LPARAM port) //接收到字符进行处理
{
//处理初始化的内容：收0x55,0xAA,发0x50,0x50,0xD0,0xD0
unsigned char ch = (unsigned char)ch1;
// dc.ExtTextOut(20,0,ETO_CLIPPED,NULL,"收到消息处理命令",NULL);
if(m_initCmd < 2)
{
m_initCmd = 2;
TransportInit(ch);
return 0;
}
//接受其余的信息
if(0x80<=ch&&ch<=0x88) //为命令操作码
{
m_cmd = ch;          //存储当前命令
m_hang = 100; //设置为初始的行号
m_lie = 100; //设置为初始的列号
}
switch (m_cmd)
{
case 0x80://80H----清屏
ClearScreen_80(ch);
break;
case 0x81://81H，N1，N2-----光标移到N1行，N2列。 N1（0---15） N2（0---39）
Show_81(ch);
break;
case 0x82://82H，N1----清N1行。     N1（0---15）
ClearHang_82(ch);
break;
case 0x83://83H，N1，N2，N3-----在N1行，N2列反显（N3为长度）。
Show_83(ch);
break;
case 0x84://84H，N1，N2，N3-----在N1行，N2列正显（N3为长度）。
Show_84(ch);
break;
case 0x85://85H，N1，N2-----在N1行N2列显示光标。
ShowCaret_85(ch);
break;
case 0x86://86H----关闭光标。
ShutCaret_86(ch);
break;
case 0x87://87H，L1，L2----控制灯。
ControlLight_87(ch);
break;
case 0x88://88H，M1----LCD对比度。M1（0---7）
Lcd_88(ch);
break;
default:
break;
// MessageBox(_T("error Cmd_view.cppOnReceiveData"));
}
return 0;
}void CARM_181View::ClearScreen_80(WPARAM ch)
{
for(int i=0;i<12;i++)
for(int j=0;j<40;j++)
m_arrayAll[i][j] = 0x32;
for(int k=0;k<12;k++)
ShowLine(k);
}void CARM_181View::Show_81(WPARAM ch)
{
unsigned char ch1 = (unsigned char)ch;
if(ch != 0x81)
{
if(m_hang == 100)             //设置行号和列号
m_hang = ch;
else if(m_lie == 100)
m_lie = ch;
else
{
// m_caretPoint.x = 16+16*m_lie; //显示光标
// m_caretPoint.y = 33*m_hang+82;
// SetCaretPos(m_caretPoint);
// ShowCaret();
m_arrayAll[m_hang][m_lie] = ch;
m_counter++;
if(m_counter == 40)    //40个字符接收完成
{
ShowLine(m_hang);
m_counter = 0;
}
m_lie++;
}
}
}void CARM_181View::ClearHang_82(WPARAM ch)
{
if((ch != 0x82)&&(m_hang == 100))
{
m_hang = ch; //要清除的行数
for(int i = 0; i<40; i++)
{
m_arrayAll[m_hang][i] = 0x20;
}
ShowLine(m_hang);
}
}
void CARM_181View::Show_83(WPARAM ch)
{
CSize sz;
CString strTemp("");
int i=0;
CClientDC dc(this);
dc.SelectObject(&font);
if((ch != 0x83)&&(m_hang == 100))
m_hang = ch;
else if((ch != 0x83)&&(m_lie == 100))
m_lie = ch;
else if(ch != 0x83)  //处理反显问题，ch为反显的长度
{
char *CharPre = new char[m_lie+1];  //计算前面显示的长度
for(i = 0;i<m_lie;i++)
{
CharPre[i] = m_arrayAll[m_hang][i];
}
CharPre[m_lie] = 0;
//从ASCII转换到UNICODE
int unicodeLen1 = MultiByteToWideChar(CP_ACP,0,CharPre,-1,NULL,0);
wchar_t *pUnicode1;
pUnicode1 = new wchar_t[unicodeLen1+1];
memset(pUnicode1,0,(unicodeLen1+1)*sizeof(wchar_t));
MultiByteToWideChar(936,0,CharPre,-1,(LPWSTR)pUnicode1,unicodeLen1);
strTemp.Empty();
strTemp.Format(_T("%s"),pUnicode1);
// strTemp = strTemp.Mid(0,unicodeLen1-1);
sz = dc.GetTextExtent(strTemp);
// delete CharPre;
char *All = new char[ch+1];
All[ch] = 0;
for(i = m_lie;i< m_lie+ch;i++)
{
All[i-m_lie] = m_arrayAll[m_hang][i]; // 存储要反显的内容
} //从ASCII转换到UNICODE
int unicodeLen = MultiByteToWideChar(CP_ACP,0,All,-1,NULL,0);
wchar_t *pUnicode;
pUnicode = new wchar_t[unicodeLen+1];
memset(pUnicode,0,(unicodeLen+1)*sizeof(wchar_t));
MultiByteToWideChar(936,0,All,-1,(LPWSTR)pUnicode,unicodeLen); strTemp.Empty();
strTemp.Format(_T("%s"),pUnicode);
// strTemp = strTemp.Mid(0,unicodeLen-1);
dc.SetTextColor(RGB(255,255,255)); //白笔
dc.SetBkColor(RGB(0,0,0));         //黑背景
dc.ExtTextOut(sz.cx+40,FONTHEIGHT*m_hang+BLANK,ETO_CLIPPED,NULL,strTemp,NULL);
delete pUnicode;
delete pUnicode1;
delete CharPre;
delete All;
m_cmd = 0;
}}void CARM_181View::Show_84(WPARAM ch)
{
CSize sz;
CString strTemp("");
CClientDC dc(this);
dc.SelectObject(&font);
if((ch != 0x84)&&(m_hang == 100))
m_hang = ch;
else if((ch != 0x84)&&(m_lie == 100))
m_lie = ch;
else if(ch != 0x84)  //处理反显问题，ch为反显的长度
{
strTemp.Empty();
int i = 0;
char *CharPre = new char[m_lie+1]; //计算前面显示的长度
for(i = 0;i<m_lie;i++)
{
CharPre[i] = m_arrayAll[m_hang][i];
}
CharPre[m_lie] = 0;
//从ASCII转换到UNICODE
int unicodeLen1 = MultiByteToWideChar(CP_ACP,0,CharPre,-1,NULL,0);
wchar_t *pUnicode1;
pUnicode1 = new wchar_t[unicodeLen1+1];
memset(pUnicode1,0,(unicodeLen1+1)*sizeof(wchar_t));
MultiByteToWideChar(936,0,CharPre,-1,(LPWSTR)pUnicode1,unicodeLen1);
strTemp.Empty();
strTemp.Format(_T("%s"),pUnicode1);
// strTemp = strTemp.Mid(0,unicodeLen1-1);
sz = dc.GetTextExtent(strTemp);
// delete CharPre; char *All = new char[ch+1];
All[ch] = 0;
for(i = m_lie;i< m_lie+ch;i++)
{
All[i-m_lie] = m_arrayAll[m_hang][i]; // 存储要反显的内容
}
//从ASCII转换到UNICODE
int unicodeLen = MultiByteToWideChar(CP_ACP,0,All,-1,NULL,0);
wchar_t *pUnicode;
pUnicode = new wchar_t[unicodeLen+1];
memset(pUnicode,0,(unicodeLen+1)*sizeof(wchar_t));
MultiByteToWideChar(936,0,All,-1,(LPWSTR)pUnicode,unicodeLen); strTemp.Empty();
strTemp.Format(_T("%s"),pUnicode);
// strTemp = strTemp.Mid(0,unicodeLen-1);
dc.SetTextColor(RGB(0,0,0)); //黑笔
dc.SetBkColor(RGB(255,255,255));         //白背景
dc.ExtTextOut(sz.cx+40,FONTHEIGHT*m_hang+BLANK,ETO_CLIPPED,NULL,strTemp,NULL);
delete CharPre;
delete pUnicode1;
delete pUnicode;
delete All;
m_cmd = 0;
}}void CARM_181View::ShowCaret_85(WPARAM ch)
{
if(ch != 0x85 && m_hang==100) //设置行
{
m_hang = ch;
}
else if(m_hang != 100 && m_lie == 100)//设置列
{
m_lie = ch;
m_caretPoint.x = 16*m_lie;
m_caretPoint.y = 33*m_hang+82;
SetCaretPos(m_caretPoint);
ShowCaret();
}
}void CARM_181View::ShutCaret_86(WPARAM ch)
{
HideCaret();
}
void CARM_181View::ControlLight_87(WPARAM ch)
{
if(ch == 0x55 || ch == 0xAA)
return;
if(ch != 0x87)//不是命令时
{
if(m_hang == 100)
{
m_hang = ch&0x0000F;
}
else if(m_lie == 100)   //命令传输完成
{
m_lie = ch&0x0000F;
LcdShow();
}
}
}void CARM_181View::Lcd_88(WPARAM ch)
{

}void CARM_181View::ShowLine(int num)
{
// Sleep(10);
// ReadEvent.SetEvent();
int i = 0;
for(i=0;i<40;i++)
{
AllShow[i] = (char)m_arrayAll[num][i];
}
//从ASCII转换到UNICODE
int unicodeLen = MultiByteToWideChar(CP_ACP,0,AllShow,-1,NULL,0);
wchar_t *pUnicode;
pUnicode = new wchar_t[unicodeLen+1];
memset(pUnicode,0,(unicodeLen+1)*sizeof(wchar_t));
MultiByteToWideChar(936,0,AllShow,-1,(LPWSTR)pUnicode,unicodeLen);

/* CString strTemp("");
strTemp.Format(_T("%s"),pUnicode);
strTemp = strTemp.Mid(0,unicodeLen-1);   //除去多余的部分
CString str(strTemp);
*/ CString strSpace("                                        ");   //清除原先的显示
dcShow.ExtTextOut(40,FONTHEIGHT*num+BLANK,ETO_CLIPPED,NULL,strSpace,NULL);
CString str(pUnicode);
// str.Format(_T("%s"),pUnicode);
// CClientDC dc(this);
// dc.SelectObject(&font);// if(m_cmd == 0x82 || m_cmd == 0x80)
// {
// dcShow.ExtTextOut(317,FONTHEIGHT*num,ETO_CLIPPED,NULL,str,NULL);
// }
// if(m_cmd == 0x81)
// {
// dcShow.ExtTextOut(0,33*num+82,ETO_CLIPPED,NULL,str,NULL);
// }
// Sleep(10);
// dcShow.SelectObject(&font); int  width = 40;
if(num == 11)
{
CBrush m_brush(RGB(200,200,200));
CRect rect_temp(width,FONTHEIGHT*num+BLANK,600,FONTHEIGHT*num+BLANK+40);
dcShow.FillRect(&rect_temp,&m_brush); dcShow.SetBkColor(RGB(200,200,200));
dcShow.SelectObject(&font_Chinese);
for(i = 0;i<unicodeLen-1;i++)
{
dcShow.ExtTextOut(width,FONTHEIGHT*num+BLANK,ETO_CLIPPED,NULL,str[i],NULL);
if((int)str[i]>0x3400)
width += 28;
else
width += 14;
}
dcShow.SetBkColor(RGB(255,255,255));
/* dcShow.SelectObject(&font_Chinese);
dcShow.ExtTextOut(40,FONTHEIGHT*num+BLANK,ETO_CLIPPED,NULL,str,NULL);
dcShow.SelectObject(&font);
*/
dcShow.SelectObject(&font);
return;
}

dcShow.ExtTextOut(40,FONTHEIGHT*num+BLANK,ETO_CLIPPED,NULL,str,NULL);
if((num == 0) && (m_arrayAll[0][21] == 0xA1) && (m_arrayAll[0][22] == 0xF1))    //解决黑圈问题
{
/* CString str111(str,17);
CSize sz;
sz = dcShow.GetTextExtent(str111);
dcShow.SelectObject(&font_Chinese);
dcShow.ExtTextOut(40,50,ETO_CLIPPED,NULL,str[18],NULL);
dcShow.ExtTextOut(40+sz.cx,FONTHEIGHT*num+BLANK,ETO_CLIPPED,NULL,str[19],NULL);
dcShow.SelectObject(&font);*/
CSize sz;
for(int i=0;i<30;i++)
{
if(pUnicode[i] == 9679)
break;
}
CString str111(pUnicode,i);
sz = dcShow.GetTextExtent(str111);
CClientDC dc1(this);
CBrush brush(RGB(0,250,0));
dc1.SelectObject(&brush);
dc1.Ellipse(sz.cx+41,BLANK+6,sz.cx+61,BLANK+26);
}
delete pUnicode;
m_cmd = 0;
}void CARM_181View::LcdShow()
{
CClientDC dc(this);
int i = 0;
for(i=0;i < 4;i++)   //画左边4个指示灯
{
dc.Ellipse(5,(i+1)*80,35,(i+1)*80+30);
}
for(i=0;i < 4;i++) //画右边4个指示灯
{
dc.Ellipse(605,(i+1)*80,635,(i+1)*80+30);
}
//显示现在要显示的
CBrush brush(RGB(255,0,0));
dc.SelectObject(&brush);
if(m_hang == 0x04)     //转换列
m_hang = 3;
if(m_hang == 0x08)
m_hang = 4;
if(m_lie == 0x04)
m_lie = 3;
if(m_lie == 0x08)
m_lie = 4;
// m_lie = m_lie-1;
if((m_hang == 0)||(m_lie == 0))
return;
m_hang = 4-m_hang;
dc.Ellipse(5,(m_lie)*80,35,(m_lie)*80+30);
dc.Ellipse(605,(m_hang+1)*80,635,(m_hang+1)*80+30);
}

void CARM_181View::OnInitialUpdate()
{
CView::OnInitialUpdate();

// TODO: Add your specialized code here and/or call the base class
CreateSolidCaret(10,1);
AllShow[40] = 0;
// CeSetThreadPriority(this,251);
TIMECAPS tc;
MMRESULT mmr=timeGetDevCaps(&tc,sizeof(TIMECAPS)); //获取系统最小时间间隔
m_wTimerRes=min(tc.wPeriodMax,tc.wPeriodMin);
mmr=timeBeginPeriod(m_wTimerRes); //设置最小时间分辨率
m_TimerID = timeSetEvent(21,m_wTimerRes,CallBackFunc,(DWORD)this,TIME_PERIODIC);
dcShow.Attach(*this->GetDC());
dcShow.SelectObject(&font);
// dcShow.SelectObject(&pen);
HANDLE m_DispThread= AfxBeginThread(DisplayThread,this);
if( !m_DispThread )return ;
CeSetThreadPriority(m_DispThread,200);
}
void CARM_181View::TransportInit(WPARAM ch1)
{
unsigned char ch = (unsigned char)ch1;
if(ch == 0x55)
{
m_initCmd++;
}
else if(ch == 0xAA)
{
m_initCmd++;
if(m_initCmd == 2)
{
char a[4];                 //可能出错
a[0] = 0x50;
a[1] = 0x50;
a[2] = 0xD0;
a[3] = 0xD0;
m_serialPort.OnSend(a,4);
// CClientDC dc(this);
// dc.ExtTextOut(20,0,ETO_CLIPPED,NULL,"收到初始化命令",NULL);
}
}
// if(m_initCmd > 2)
// MessageBox(_T("处理初始化的内容错误：收0x55,0xAA,发0x50,0x50,0xD0,0xD0"));
}UINT DisplayThread(LPVOID pParam)
{
CARM_181View* pView = (CARM_181View*)pParam;
int counter;
while(TRUE)
{
counter = 0;
WaitForSingleObject(DisplayEvent.m_hObject,INFINITE);
while((pRead != pWrite) && (counter<50))
{
counter++;
critical_section.Lock();
pView->OnReceiveData(pRead->ReadQueue(pRead),2);
pRead = pRead->GetAfterP();
critical_section.Unlock();
}
}
}
void PASCAL    CallBackFunc   (UINT uID, // Timer identifier
                               UINT uMsg,       // Not currently used
                               DWORD dwUser,    // User information
                               DWORD dw1,       // Windows reserved
                               DWORD dw2) // is also reserved
{
/* static int IsRead = 0;
if(IsRead == 3)
IsRead =0;
if(IsRead != 2)
{
IsRead++;
ReadEvent.SetEvent();
}
else
{
IsRead++;
// ReadEvent.SetEvent();
DisplayEvent.SetEvent();
}*/
static bool IsRead = TRUE;
if(IsRead == TRUE)
{
IsRead = FALSE;
ReadEvent.SetEvent();
}
else
{
IsRead = TRUE;
DisplayEvent.SetEvent();
// ReadEvent.SetEvent();
}/* CClientDC dc(pView);
static float time = 0;
time += 0.05;
CString str("");
str.Format(_T("%.2f"),time);
dc.ExtTextOut(200,100,ETO_CLIPPED,NULL,str,NULL);*/
}

这是view类中的全部代码，所有的显示都是在这里实现的
写的有点乱

CClientDC dc(this)

DeleteDC(dc);

你这个问题还真是不太清楚，再补充一点， CreatePen, CreateFont等函数，最后最好调用一下 DeleteObject，这是释放函数。New不delete会造成内存耗尽
GetDC不ReleaseDC会造成再也不能绘图
CreateBrush不DeleteObject，会造成资源的耗尽。程序死掉，这个原因太多，一时看不出来。

有测试了一次，还是100多个小时就死机了
操作系统应该没有死，应为点击开始还能够弹出菜单，但是不能弹出二级菜单
详细看了一下，系统的内存是8k,8k,8k...的往上涨的，wince的颗粒度不是4k吗？

主要的是下面几个函数，帮忙看看有没有问题
void CARM_181View::ShowLine(int num)
{
// Sleep(10);
// ReadEvent.SetEvent();
int i = 0;
for(i=0;i<40;i++)
{
AllShow[i] = (char)m_arrayAll[num][i];
}
//从ASCII转换到UNICODE
int unicodeLen = MultiByteToWideChar(CP_ACP,0,AllShow,-1,NULL,0);
wchar_t *pUnicode;
pUnicode = new wchar_t[unicodeLen+1];
memset(pUnicode,0,(unicodeLen+1)*sizeof(wchar_t));
MultiByteToWideChar(936,0,AllShow,-1,(LPWSTR)pUnicode,unicodeLen);

/* CString strTemp("");
strTemp.Format(_T("%s"),pUnicode);
strTemp = strTemp.Mid(0,unicodeLen-1);   //除去多余的部分
CString str(strTemp);
*/ CString strSpace("                                        ");   //清除原先的显示
dcShow.ExtTextOut(40,FONTHEIGHT*num+BLANK,ETO_CLIPPED,NULL,strSpace,NULL);
CString str(pUnicode);
// str.Format(_T("%s"),pUnicode);
// CClientDC dc(this);
// dc.SelectObject(&font);// if(m_cmd == 0x82 || m_cmd == 0x80)
// {
// dcShow.ExtTextOut(317,FONTHEIGHT*num,ETO_CLIPPED,NULL,str,NULL);
// }
// if(m_cmd == 0x81)
// {
// dcShow.ExtTextOut(0,33*num+82,ETO_CLIPPED,NULL,str,NULL);
// }
// Sleep(10);
// dcShow.SelectObject(&font); int  width = 40;
if(num == 11)
{
CBrush m_brush(RGB(200,200,200));
CRect rect_temp(width,FONTHEIGHT*num+BLANK,600,FONTHEIGHT*num+BLANK+40);
dcShow.FillRect(&rect_temp,&m_brush); dcShow.SetBkColor(RGB(200,200,200));
dcShow.SelectObject(&font_Chinese);
for(i = 0;i<unicodeLen-1;i++)
{
dcShow.ExtTextOut(width,FONTHEIGHT*num+BLANK,ETO_CLIPPED,NULL,str[i],NULL);
if((int)str[i]>0x3400)
width += 28;
else
width += 14;
}
dcShow.SetBkColor(RGB(255,255,255));
/* dcShow.SelectObject(&font_Chinese);
dcShow.ExtTextOut(40,FONTHEIGHT*num+BLANK,ETO_CLIPPED,NULL,str,NULL);
dcShow.SelectObject(&font);
*/
dcShow.SelectObject(&font);
delete []pUnicode;
return;
}

dcShow.ExtTextOut(40,FONTHEIGHT*num+BLANK,ETO_CLIPPED,NULL,str,NULL);
if((num == 0) && (m_arrayAll[0][21] == 0xA1) && (m_arrayAll[0][22] == 0xF1))    //解决黑圈问题
{
/* CString str111(str,17);
CSize sz;
sz = dcShow.GetTextExtent(str111);
dcShow.SelectObject(&font_Chinese);
dcShow.ExtTextOut(40,50,ETO_CLIPPED,NULL,str[18],NULL);
dcShow.ExtTextOut(40+sz.cx,FONTHEIGHT*num+BLANK,ETO_CLIPPED,NULL,str[19],NULL);
dcShow.SelectObject(&font);*/
CSize sz;
for(int i=0;i<30;i++)
{
if(pUnicode[i] == 9679)
break;
}
CString str111(pUnicode,i);
sz = dcShow.GetTextExtent(str111);
CClientDC dc1(this);
CBrush brush(RGB(0,250,0));
dc1.SelectObject(&brush);
dc1.Ellipse(sz.cx+41,BLANK+6,sz.cx+61,BLANK+26);
}
delete []pUnicode;
m_cmd = 0;
}

void CARM_181View::Show_83(WPARAM ch)
{
CSize sz;
CString strTemp("");
int i=0;
CClientDC dc(this);
dc.SelectObject(&font); if((ch != 0x83)&&(m_hang == 100))
m_hang = ch;
else if((ch != 0x83)&&(m_lie == 100))
m_lie = ch;
else if(ch != 0x83)  //处理反显问题，ch为反显的长度
{
char *CharPre = new char[m_lie+1];  //计算前面显示的长度
for(i = 0;i<m_lie;i++)
{
CharPre[i] = m_arrayAll[m_hang][i];
}
CharPre[m_lie] = 0;
//从ASCII转换到UNICODE
int unicodeLen1 = MultiByteToWideChar(CP_ACP,0,CharPre,-1,NULL,0);
wchar_t *pUnicode1;
pUnicode1 = new wchar_t[unicodeLen1+1];
memset(pUnicode1,0,(unicodeLen1+1)*sizeof(wchar_t));
MultiByteToWideChar(936,0,CharPre,-1,(LPWSTR)pUnicode1,unicodeLen1);
strTemp.Empty();
strTemp.Format(_T("%s"),pUnicode1);
// strTemp = strTemp.Mid(0,unicodeLen1-1);
sz = dc.GetTextExtent(strTemp);
// delete CharPre;
char *All = new char[ch+1];
All[ch] = 0;
for(i = m_lie;i< m_lie+ch;i++)
{
All[i-m_lie] = m_arrayAll[m_hang][i]; // 存储要反显的内容
} //从ASCII转换到UNICODE
int unicodeLen = MultiByteToWideChar(CP_ACP,0,All,-1,NULL,0);
wchar_t *pUnicode;
pUnicode = new wchar_t[unicodeLen+1];
memset(pUnicode,0,(unicodeLen+1)*sizeof(wchar_t));
MultiByteToWideChar(936,0,All,-1,(LPWSTR)pUnicode,unicodeLen); strTemp.Empty();
strTemp.Format(_T("%s"),pUnicode);
// strTemp = strTemp.Mid(0,unicodeLen-1);
dc.SetTextColor(RGB(255,255,255)); //白笔
dc.SetBkColor(RGB(0,0,0));         //黑背景
dc.ExtTextOut(sz.cx+40,FONTHEIGHT*m_hang+BLANK,ETO_CLIPPED,NULL,strTemp,NULL);
delete []pUnicode;
delete []All;
delete []pUnicode1;
delete []CharPre;
m_cmd = 0;
}}void CARM_181View::Show_84(WPARAM ch)
{
CSize sz;
CString strTemp("");
CClientDC dc(this);
dc.SelectObject(&font);
if((ch != 0x84)&&(m_hang == 100))
m_hang = ch;
else if((ch != 0x84)&&(m_lie == 100))
m_lie = ch;
else if(ch != 0x84)  //处理反显问题，ch为反显的长度
{
strTemp.Empty();
int i = 0;
char *CharPre = new char[m_lie+1]; //计算前面显示的长度
for(i = 0;i<m_lie;i++)
{
CharPre[i] = m_arrayAll[m_hang][i];
}
CharPre[m_lie] = 0;
//从ASCII转换到UNICODE
int unicodeLen1 = MultiByteToWideChar(CP_ACP,0,CharPre,-1,NULL,0);
wchar_t *pUnicode1;
pUnicode1 = new wchar_t[unicodeLen1+1];
memset(pUnicode1,0,(unicodeLen1+1)*sizeof(wchar_t));
MultiByteToWideChar(936,0,CharPre,-1,(LPWSTR)pUnicode1,unicodeLen1);
strTemp.Empty();
strTemp.Format(_T("%s"),pUnicode1);
// strTemp = strTemp.Mid(0,unicodeLen1-1);
sz = dc.GetTextExtent(strTemp);
// delete CharPre; char *All = new char[ch+1];
All[ch] = 0;
for(i = m_lie;i< m_lie+ch;i++)
{
All[i-m_lie] = m_arrayAll[m_hang][i]; // 存储要反显的内容
}
//从ASCII转换到UNICODE
int unicodeLen = MultiByteToWideChar(CP_ACP,0,All,-1,NULL,0);
wchar_t *pUnicode;
pUnicode = new wchar_t[unicodeLen+1];
memset(pUnicode,0,(unicodeLen+1)*sizeof(wchar_t));
MultiByteToWideChar(936,0,All,-1,(LPWSTR)pUnicode,unicodeLen); strTemp.Empty();
strTemp.Format(_T("%s"),pUnicode);
// strTemp = strTemp.Mid(0,unicodeLen-1);
dc.SetTextColor(RGB(0,0,0)); //黑笔
dc.SetBkColor(RGB(255,255,255));         //白背景
dc.ExtTextOut(sz.cx+40,FONTHEIGHT*m_hang+BLANK,ETO_CLIPPED,NULL,strTemp,NULL);
delete []pUnicode;
delete []All;
delete []pUnicode1;
delete []CharPre;
m_cmd = 0;
}}

终于查到原因了，因为有个函数里面：
CClientDC dc1(this);
CBrush brush(RGB(0,250,0));
dc1.SelectObject(&brush);
dc1.Ellipse(sz.cx+41,BLANK+6,sz.cx+61,BLANK+26);
哪位能够给我解释一下为什么会内存泄露？

人家不都告诉你了吗？？
你没有ReleaseDC和DeleteObject

改为以下代码试试，dc用完以后要恢复到原来的配置，如果brush选入dc的话，brush对象不会释放
其他类似的地方也要这样处理，如果还不行，就不知道了CClientDC dc1(this);
CBrush brush(RGB(0,250,0));
CBrush *pOldBrush = dc1.SelectObject(&brush);
dc1.Ellipse(sz.cx+41,BLANK+6,sz.cx+61,BLANK+26);dc1.SelectObject(pOldBrush );

To Conry:
我也试了一下，这样还是不行，在pc机上也有内存泄露

在经常用到CClientDC dc1、CBrush brush的地方，声明成全局变量。
WinCE的内存机制与Win98/2k/xp不同，因为它常用于嵌入式设备上，嵌入式设备多数是小内存。如果你反复开辟内存，比如不断地new,delete，尽管你都做了delete，但内存的“碎片”会越积越多，尤其是在CPU速度慢的设备上，系统还没来得及delete，你又new了。非数组变量也是同样，比如函数内的局部变量，你调用该函数的次数越多越快，内存的“碎片”就越多，所以还是多用全局变量。
你的CClientDC dc1、CBrush brush占用内存又更多，如果经常调用、快速调用，内存会慢慢消耗掉！

我之前也是这样，以为只要有new的地方有DELETE就没关系，写的一个程序，显示一个3*2的小方块，显示8个，没用ReleaseDC 跑了半天提示内存不足

调试易

帮忙分析一下为什么程序运行100多小时候死机

解决方案 »