CListBox的糊涂使用

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WM_CTLCOLOR消息用来完成对EDIT, STATIC, BUTTON等控件设置背景和字体颜色, 其用法如下:

1.首先在自己需要设置界面的对话框上点击右键-->建立类向导-->加入WM_CTLCOLOR消息-->自动生成OnCtlColor()函数, 此函数可以对本对话框的控件的界面外观做修饰, 用法如下:
将类向导产生的函数做如下修改:

HBRUSH CDialogColor::OnCtlColor(CDC* pDC, CWnd* pWnd, UINT nCtlColor)
{
    HBRUSH hbr = CDialog::OnCtlColor(pDC,pWnd, nCtlColor);
    // TODO: Change any attributes of the DC here
    // 设置显示字体
    CFont * cFont=new CFont;
    cFont->CreateFont(16,0,0,0,FW_SEMIBOLD,FALSE,FALSE,0,
                ANSI_CHARSET,OUT_DEFAULT_PRECIS,
                CLIP_DEFAULT_PRECIS,DEFAULT_QUALITY,
                DEFAULT_PITCH&FF_SWISS,"Arial");
    // 对特定的控件做修改
    switch()
    {
        case CTLCOLOR_STATIC: //对所有静态文本控件的设置
        {
            pDC->SetBkMode(TRANSPARENT);
            //设置背景为透明
            pDC->SetTextColor(RGB(255,255,0)); //设置字体颜色
            pWnd->SetFont(cFont); //设置字体
            HBRUSH B = CreateSolidBrush(RGB(125,125,255));
            //创建画刷
            return (HBRUSH) B; //返回画刷句柄
        }
        case CTLCOLOR_EDIT: //对所有编辑框的设置
        {
            pDC->SetBkMode(TRANSPARENT);
            pDC->SetTextColor(RGB(255,255,0));
            pWnd->SetFont(cFont);
            HBRUSH B = CreateSolidBrush(RGB(125,125,255));
            return (HBRUSH) B;
        }
        default:
            return CDialog::OnCtlColor(pDC,pWnd, nCtlColor);
    }
}

注:case的类别有以下几种:
CTLCOLOR_BTN 按钮控件
CTLCOLOR_DLG 对话框
CTLCOLOR_EDIT 编辑框
CTLCOLOR_LISTBOX 列表框
CTLCOLOR_MSGBOX 消息框
CTLCOLOR_SCROLLBAR 滚动条
CTLCOLOR_STATIC 静态文本

2.你可能觉得对所有的控件使用统一的界面设置觉得不自由, 其实VC同样可以对特定的ID的控件进行设置, 方法如下:

switch (pWnd->GetDlgCtrlID())
{
    //针对ID为IDC_CTL1, IDC_CTL2和IDC_CTL3的控件进行同样的设置
    case IDC_CTL1:
    case IDC_CTL2:
    case IDC_CTL3:
    {
        pDC->SetBkMode(TRANSPARENT);
        pDC->SetTextColor(RGB(255,255, 0));
        pWnd->SetFont(cFont);
        HBRUSH B = CreateSolidBrush(RGB(125,125,255));
        return (HBRUSH) B;
    }
    default:
        return CDialog::OnCtlColor(pDC, pWnd, nCtlColor);
}

================================================================================================

在用到CListBox的时候,总是觉得很郁闷,这次认真的研究了一下。有两种方法,

一种是相应WM_CTLCOLOR它是最简单,最方便的,相关代码如下:  

HBRUSH br=::CreateSolidBrush (RGB(0,255,255));
 if(pWnd->GetDlgCtrlID ()==IDC_LIST3)
 {
  pDC->SetTextColor (RGB(255,0,0));
  pDC->SelectObject (&font);
  pDC->SetBkColor (RGB(0,255,255));
  return br;
 }

 

第二种方法是我们自己写个,重新写void DrawItem(LPDRAWITEMSTRUCT lpDrawItemStruct)函数.

因为CListBox不支持OWNER DRAW,因此要增加String,要自己绘制。

一定要记住:CListBox的属性要这样设置,ower draw:选fixed。勾选下面的has string.

相关代码如下:

void CMyListBox::DrawItem(LPDRAWITEMSTRUCT lpDrawItemStruct)
{
   CDC dc;
   dc.Attach(lpDrawItemStruct->hDC);
   COLORREF clrItemText;
   CRect rect;
   switch ( lpDrawItemStruct->itemAction )
   {
    case ODA_SELECT:
       case ODA_DRAWENTIRE:
     if ( lpDrawItemStruct->itemState & ODS_SELECTED )
           {
              clrItemText = GetSysColor( COLOR_HIGHLIGHTTEXT );
              FillRect( lpDrawItemStruct->hDC,&lpDrawItemStruct->rcItem,(HBRUSH)(COLOR_ACTIVECAPTION+1));
           }
    else
          {
              clrItemText = GetSysColor( COLOR_WINDOWTEXT );
              FillRect( lpDrawItemStruct->hDC,&lpDrawItemStruct->rcItem,(HBRUSH)(COLOR_WINDOW+1) );
          }
     break;
    default:
     break;
   }
   DrawFocusRect(lpDrawItemStruct->hDC ,&lpDrawItemStruct->rcItem);
   CRect rectFull = lpDrawItemStruct->rcItem;
   rect = rectFull;
   rect.left = rect.Width();
   CRect rect2 = rectFull;
   rect2.right = rect.left - 1;
   UINT nIndex = lpDrawItemStruct->itemID;
   if (nIndex != (UINT) -1)
   {
       CFont font, *pOldFont;
       font.CreatePointFont (100,_T("楷体"));
       pOldFont=dc.SelectObject(&font);
       CString strName;
       this->GetText(nIndex,strName);
       dc.SetBkMode(TRANSPARENT);
       dc.SetTextColor (RGB(255,0,0));
  
       dc.SetBkColor (RGB(0,255,255));
       dc.DrawText(strName,CRect(rect2.left+3,rect2.top+3,
       rect2.right-3,rect2.bottom+3),
       DT_LEFT | DT_SINGLELINE);
    dc.SelectObject (pOldFont);
    font.DeleteObject ();
  
   }
   dc.Detach();
}

 

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