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ListCtrl控件添加NM_CUSTOMDRAW消息

 VC6没有ListCtrl控件的NM_CUSTOMDRAW属性，要自己添加，添加的步骤：

1、Message Map

BEGIN_MESSAGE_MAP( ... , ...)

        //{

{AFX_MSG_MAP(CCustomDrawDlg)

        // ......

       ON_NOTIFY(NM_CUSTOMDRAW, IDC_LIST, OnNMCustomdrawList)                  // Add here

                 // IDC_LIST Specify the ID of the  Ctrl

                 // OnNMCustomdrawCtrl  Specify the function name

       //}}AFX_MSG_MAP

END_MESSAGE_MAP()

2、类的声明中添加

 afx_msg void OnNMCustomdrawList(NMHDR *pNMHDR, LRESULT *pResult);

3、对应的cpp文件中添加定义

 

CListCtrl列表中，改写几列的文字颜色

在ListCtrl控件绘画前处理NM_CUSTOMDRAW消息。

告诉Windows我们想对每个Item处理NM_CUSTOMDRAW消息。当这些消息中的一个到来，告诉Windows我们想在每个SubItem的绘制前处理这个消息当这些消息到达，我们就为每个SubItem设置文字和背景的颜色。

void CMyDlg::OnCustomdrawMyList ( NMHDR* pNMHDR, LRESULT* pResult ){  NMLVCUSTOMDRAW* pLVCD = reinterpret_cast
   
    ( pNMHDR );     // Take the default processing unless we set this to something else below.      *pResult = CDRF_DODEFAULT;     // First thing - check the draw stage. If it's the control's prepaint      // stage, then tell Windows we want messages for every item.       if ( CDDS_PREPAINT == pLVCD->nmcd.dwDrawStage )  {      *pResult = CDRF_NOTIFYITEMDRAW;  }      elseif ( CDDS_ITEMPREPAINT == pLVCD->nmcd.dwDrawStage )          {          // This is the notification message for an item. We'll request                  // notifications before each subitem's prepaint stage.                   *pResult = CDRF_NOTIFYSUBITEMDRAW;          }      elseif ( (CDDS_ITEMPREPAINT | CDDS_SUBITEM) == pLVCD->nmcd.dwDrawStage )          {          // This is the prepaint stage for a subitem. Here's where we set the                  // item's text and background colors. Our return value will tell                   // Windows to draw the subitem itself, but it will use the new colors                  // we set here.                  // The text color will cycle through red, green, and light blue.                  // The background color will be light blue for column 0, red for                  // column 1, and black for column 2.                                COLORREF crText, crBkgnd;                          if ( 0 == pLVCD->iSubItem )          {                        crText = RGB(255,0,0);                        crBkgnd = RGB(128,128,255);                      }                  elseif ( 1 == pLVCD->iSubItem )                      {                      crText = RGB(0,255,0);                         crBkgnd = RGB(255,0,0);                      }                  else                      {                       crText = RGB(128,128,255);                         crBkgnd = RGB(0,0,0);                    }                   // Store the colors back in the NMLVCUSTOMDRAW struct.                            pLVCD->clrText = crText;                  pLVCD->clrTextBk = crBkgnd;                             // Tell Windows to paint the control itself.                  *pResult = CDRF_DODEFAULT;           }}
   

 

 

l         clrTextBk的颜色只是针对每一列，在最后一列的右边那个区域颜色也还是和ListCtrl控件的背景颜色一致。l         当我重新看文档的时候，我注意到有一篇题目是“NM_CUSTOMDRAW (list view)”的文章，它说你可以在最开始的custom draw消息中返回CDRF_NOTIFYSUBITEMDRAW就可以处理SubItem了，而不需要在CDDS_ITEMPREPAINT绘画段中去指定CDRF_NOTIFYSUBITEMDRAW。但是我试了一下，发现这种方法并不起作用，你还是需要处理CDDS_ITEMPREPAINT段。

 

 

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