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标题:VC++画图 运行Win32时窗口会卡死
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wby210
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VC++画图 运行Win32时窗口会卡死
#include "stdafx.h"
#include "Ele.h"

#include "EleDoc.h"
#include "EleView.h"

#ifdef _DEBUG
#define new DEBUG_NEW
#endif


// CEleView

IMPLEMENT_DYNCREATE(CEleView, CScrollView)

BEGIN_MESSAGE_MAP(CEleView, CScrollView)
    ON_COMMAND(ID_SELECT, &CEleView::OnSelect)
    ON_UPDATE_COMMAND_UI(ID_SELECT, &CEleView::OnUpdateSelect)
    ON_COMMAND(ID_FRONT, &CEleView::OnFront)
    ON_COMMAND(ID_COLOR, &CEleView::OnColor)
    ON_WM_LBUTTONDOWN()
    ON_WM_LBUTTONUP()
    ON_WM_MOUSEMOVE()
    ON_WM_MOUSEWHEEL()
    ON_WM_CONTEXTMENU()
    ON_UPDATE_COMMAND_UI(ID_COLOR, &CEleView::OnUpdateColor)
    ON_UPDATE_COMMAND_UI(ID_WIRE, &CEleView::OnUpdateWire)
    ON_COMMAND(ID_WIRE, &CEleView::OnWire)
END_MESSAGE_MAP()

// CEleView 构造/析构

CEleView::CEleView()
: m_type(0),
m_element(NULL)
, m_ldPoint(0)
, m_mmPoint(0)
, m_luPoint(0)
{
    // TODO: 在此处添加构造代码

}

CEleView::~CEleView()
{
}

BOOL CEleView::PreCreateWindow(CREATESTRUCT& cs)
{
    // TODO: 在此处通过修改
    //  CREATESTRUCT cs 来修改窗口类或样式

    return CScrollView::PreCreateWindow(cs);
}

// CEleView 绘制

void CEleView::OnDraw(CDC* pDC)
{
    CEleDoc* pDoc = GetDocument();
    ASSERT_VALID(pDoc);
    if (!pDoc)
        return;

    // TODO: 在此处为本机数据添加绘制代码
    pDoc->m_list.Show(pDC);
    if(this->m_element != NULL)
        this->m_element->Draw(pDC);
    ReleaseDC(pDC);
}

void CEleView::OnInitialUpdate()
{
    CScrollView::OnInitialUpdate();

    CSize sizeTotal;
    // TODO: 计算此视图的合计大小
    sizeTotal.cx = sizeTotal.cy = 50000;
    SetScrollSizes(MM_TEXT, sizeTotal);
}


// CEleView 诊断

#ifdef _DEBUG
void CEleView::AssertValid() const
{
    CScrollView::AssertValid();
}

void CEleView::Dump(CDumpContext& dc) const
{
    CScrollView::Dump(dc);
}

CEleDoc* CEleView::GetDocument() const // 非调试版本是内联的
{
    ASSERT(m_pDocument->IsKindOf(RUNTIME_CLASS(CEleDoc)));
    return (CEleDoc*)m_pDocument;
}
#endif //_DEBUG


// CEleView 消息处理程序

void CEleView::OnSelect()
{
    // TODO: 在此添加命令处理程序代码
    if(this->m_toolFlag.m_createtype != ID_SELECT)
    {
        this->m_toolFlag.m_createtype = ID_SELECT;
    }
    else
    {
        this->m_toolFlag.m_createtype = 0;
    }
    this->m_element = NULL;
    this->m_list.Clear();
}

void CEleView::OnUpdateSelect(CCmdUI *pCmdUI)
{
    // TODO: 在此添加命令更新用户界面处理程序代码
    if(this->m_toolFlag.m_createtype == pCmdUI->m_nID)
    {
        pCmdUI->SetCheck();
    }
    else
    {
        pCmdUI->SetCheck(0);
    }
}



void CEleView::OnFront()
{
    // TODO: 在此添加命令处理程序代码
    CFontDialog* dlg = new CFontDialog(NULL,CF_EFFECTS|CF_SCREENFONTS,NULL,NULL);
    if(dlg->DoModal() == IDOK)
    {
        dlg->GetCurrentFont(& this->m_toolFlag.m_font);
    }
}

void CEleView::OnColor()
{
    // TODO: 在此添加命令处理程序代码
    CColorDialog *dlg = new CColorDialog();
    if(dlg->DoModal() == IDOK)
    {
        this->m_toolFlag.m_color = dlg->GetColor();
    }
}

void CEleView::OnLButtonDown(UINT nFlags, CPoint point)
{
    // TODO: 在此添加消息处理程序代码和/或调用默认值
    this->SetCapture();
    this->m_ldPoint = point;
    CDC *dc = this->GetDC();
    if(dc == NULL)
        return;
    if(this->m_element != NULL)
        this->m_element->Draw(dc);
    this->m_element = NULL;
    switch(this->m_toolFlag.m_createtype)
    {
    case ID_SELECT:
        this->m_element = this->GetDocument()->m_list.IsSelect(point);
        if(this->m_element != NULL)
        {
            this->m_element->HighShow(dc,1);
            C_Complex *complex = static_cast<C_Complex*>(this->m_element);
            complex->m_point = complex->SelectPoint(point);
            if(complex->m_point != NULL)
                complex->m_point->HighShow(dc,2);
        }
        break;
    default:
        switch(this->m_toolFlag.m_createtype)
        {
        case ID_WIRE:
            do{
                C_Point p1(point,this->m_toolFlag.m_color,5);
                C_Line line(point,point,2,PS_SOLID,this->m_toolFlag.m_color);
                this->m_element = new C_Wire(p1,p1,line);
                this->m_element->Draw(dc);
            }while(0);
            break;
        default:
            break;
        }
    }
    dc->ReleaseOutputDC();
    this->ReleaseDC(dc);
    //CScrollView::OnLButtonDown(nFlags, point);
}

void CEleView::OnLButtonUp(UINT nFlags, CPoint point)
{
    // TODO: 在此添加消息处理程序代码和/或调用默认值
    this->m_luPoint = point;
    CDC *dc = this->GetDC();
    if(dc == NULL)
        return;
    switch(this->m_toolFlag.m_createtype)
    {
    case ID_SELECT:
        if(this->m_element != NULL)
            this->m_element->HighShow(dc,1);
        break;
    default:
        switch(this->m_toolFlag.m_createtype)
        {
        case ID_WIRE:
            if(this->m_element != NULL)
            {
                this->m_element->Draw(dc);
                this->GetDocument()->m_list.Add(this->m_element);
                delete this->m_element;
                this->m_element = NULL;
            }
            break;
        default:
            break;
        }
    }
    //C_List *m = &(this->GetDocument()->m_list);
    this->ReleaseDC(dc);
    ReleaseCapture();
    //CScrollView::OnLButtonUp(nFlags, point);
}

void CEleView::OnMouseMove(UINT nFlags, CPoint point)
{
    // TODO: 在此添加消息处理程序代码和/或调用默认值
    this->m_mmPoint = point;
    CDC *dc = this->GetDC();
    if(dc == NULL)
        return;
    switch(this->m_toolFlag.m_createtype)
    {
    case ID_SELECT:
        if(this->m_element != NULL)
        {
            C_Complex *complex = static_cast<C_Complex*>(this->m_element);
            complex->HighShow(dc,1);
            if(complex->m_point != NULL && (nFlags & MK_LBUTTON))
            {
                this->InvalidateRect(&complex->m_rect,1);
                if(complex->ChangePoint(point))
                {
                    complex->HighShow(dc,1);
                }
            }
            else
                if(nFlags & MK_LBUTTON)
                {
                    if(this->m_element->Move(this->m_mmPoint - this->m_ldPoint))
                    {
                        this->InvalidateRect(&complex->m_rect,1);
                        this->m_element->HighShow(dc,1);
                    }
                    this->m_ldPoint = point;
                }
                else
                {
                    complex->m_point = complex->SelectPoint(point);
                    if(complex->m_point != NULL)
                        complex->m_point->HighShow(dc,2);
                }
        }
        break;
    default:
        switch(this->m_toolFlag.m_createtype)
        {
        case ID_WIRE:
            if(this->m_element != NULL &&
                this->m_element->ReturnType() == ID_WIRE)
            {
                C_Wire *pWire = static_cast<C_Wire*>(this->m_element);
                this->InvalidateRect(&pWire->m_rect);
                pWire->m_point = pWire->m_endPoint;
                pWire->ChangePoint(point);
                pWire->m_point = NULL;
            }
            break;
        default:
            break;
        }
    }
    dc->ReleaseOutputDC();
    //CScrollView::OnMouseMove(nFlags, point);
}

BOOL CEleView::OnMouseWheel(UINT nFlags, short zDelta, CPoint pt)
{
    // TODO: 在此添加消息处理程序代码和/或调用默认值

    return CScrollView::OnMouseWheel(nFlags, zDelta, pt);
}

void CEleView::OnContextMenu(CWnd* pWnd, CPoint point)
{
    // TODO: 在此处添加消息处理程序代码
}

void CEleView::OnUpdateColor(CCmdUI *pCmdUI)
{
    // TODO: 在此添加命令更新用户界面处理程序代码
}

void CEleView::OnUpdateWire(CCmdUI *pCmdUI)
{
    // TODO: 在此添加命令更新用户界面处理程序代码
    if(this->m_toolFlag.m_createtype == pCmdUI->m_nID)
    {
        pCmdUI->SetCheck();
    }
    else
    {
        pCmdUI->SetCheck(0);
    }
}

void CEleView::OnWire()
{
    // TODO: 在此添加命令处理程序代码
    if(this->m_toolFlag.m_createtype != ID_WIRE)
    {
        this->m_toolFlag.m_createtype = ID_WIRE;
    }
    else
    {
        this->m_toolFlag.m_createtype = 0;
    }
    this->m_element = NULL;
    this->m_list.Clear();
}
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