Duilib 学习笔记

1.列表元素的访问

else if (msg.pSender->GetName() == _T("train_ls_btn"))
            {

                CListUI* pList = static_cast(m_PaintManager.FindControl(_T("ListDemo1")));
                CControlUI *sequence = m_PaintManager.FindSubControlByName(msg.pSender->GetParent()->GetParent(), _T("sequence"));
//通过这种方式来进行对列表的某一行的控件的访问。

2.Dulib 动态控制控件的位置

通过name找到控件后，Remove这个控件在重新新建一个加入布局中

                    if (trace) {
                        phor->Remove(trace);
                        trace = new CControlUI;
                        phor->Add(trace);
                    }

3.MFC 动态控制控件的位置

    CWnd *pWnd;
    pWnd = GetDlgItem(IDC_PICTURE);//IDC_PICTURE为控件的ID
    pWnd->SetWindowPos(NULL, 28, 100, 961, 913, SWP_NOZORDER);    //编辑控件的大小和位置都改变  
    CRect rectL, rectR;
    GetDlgItem(IDC_PICTURE)->GetWindowRect(&rectL);//获取控件相对于屏幕的位置
    ScreenToClient(rectL);//转化为对话框上的相对位置

4.MFC控件绘图

void CMyPicoTestDlg::DrawWave(CDC *pDC,CRect &rectPicture)
{

    CPen newPen;                  //用于创建新画笔
    CPen *pOldPen;                  //用于存放旧画笔
    CBrush newBrush;              //用于创建新画笔
    CBrush *pOldBrush;            //用于存放旧画笔        
        newBrush.CreateSolidBrush(RGB(0,0,0));    //新建黑色画刷
    pOldBrush=pDC->SelectObject(&newBrush); //选择新画刷并将旧画刷的指针保存在pOldBrush
    pDC->Rectangle(rectPicture); //黑色画刷为绘图控件，形成黑色背景
    pDC->SelectObject(pOldBrush);//恢复旧画刷
    newBrush.DeleteObject(); //删除新画刷

    newPen.CreatePen(PS_SOLID,1,RGB(0,255,0));  //创建实心画笔，粗度为1，颜色为绿色
    pOldPen=pDC->SelectObject(&newPen);//选择新画笔，并将旧画笔的指针保存在pOldPen
/************************************************************************/
/* 坐标轴                                                               */
/************************************************************************/
//x轴
    pDC->MoveTo(0,rectPicture.Height()/2);
    pDC->LineTo(rectPicture.Width(),rectPicture.Height()/2);
//y轴
    pDC->MoveTo(rectPicture.Width()/2,0);
    pDC->LineTo(rectPicture.Width()/2,rectPicture.Height());
//x轴刻度

    for (int32_t i=rectPicture.Width()/2-10;i>0;i-=10)
    {
        pDC->MoveTo(i,rectPicture.Height()/2);
        pDC->LineTo(i,rectPicture.Height()/2-5);
    }
    for (int32_t i=rectPicture.Width()/2+10;i1;i+=10)
    {
        pDC->MoveTo(i,rectPicture.Height()/2);
        pDC->LineTo(i,rectPicture.Height()/2-5);

    }
//y轴刻度
    for (int32_t i=rectPicture.Height()/2-10;i>0;i-=10)
    {
        pDC->MoveTo(rectPicture.Width()/2,i);
        pDC->LineTo(rectPicture.Width()/2+5,i);
    }
    for (int32_t     
         i=rectPicture.Height()/2+10;i10)
    {
        pDC->MoveTo(rectPicture.Width()/2,i);
        pDC->LineTo(rectPicture.Width()/2+5,i);
    }
    pDC->SelectObject(pOldPen);//恢复旧画笔
    newPen.DeleteObject();//删除新画笔
 }

void CMyPicoTestDlg::OnBnClickedButton2()
{
    // TODO: 在此添加控件通知处理程序代码

    CRect rectPicture;   
    m_picDraw.GetClientRect(&rectPicture);   
       //绘制坐标系
    DrawWave(m_picDraw.GetDC(), rectPicture);

}