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CTreeCtrlEx - Setting color and font attribute for individual items in tree control

, 26 May 2002
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Allows to display color items and change the font style

Sample Image - ColorTreeCtrl.jpg

Introduction

This is an example how to enable colors in Tree Controls. Actually I saw a similar Article from a friend, but it was based on CTreeView, not on CTreeCtrl which I actually needed.

Features

Below are some of the many features that CTreeCtrlEx has.

  • Change the item color.
  • Change the item font.
  • Make the item bold.
  • Get the item color.
  • Get the item font.
  • Get if item is bold.
  • And more in future.

Usage

It is so easy, you only need to include the class CTreeCtrlEx in your project, and create control member variable from that class. The function name and the parameters you can find in the source zip file. Here is some sample code from the demo app. Here m_cTree is a member of type CTreeCtrlEx

HTREEITEM hOrder[1024], hContent[1024];
CString sStr;

for(int i = 0; i < 255; i++) 
{
    sStr.Format("Parent%d", i);
    hOrder[i] = m_cTree.InsertItem(sStr);
    for (int j = 0; j < 5; j++) 
    {
        sStr.Format("Child%d", j);
        hContent[j] = m_cTree.InsertItem(sStr, hOrder[i]);
        m_cTree.SetItemColor(hContent[j], RGB(i, 255, 0));
    }
    m_cTree.SetItemColor(hOrder[i], RGB(255, i, 0));
}

Acknowledgements

The CTreeCtrlEx is inspired by code, ideas, and submissions from the following:

Setting color and font attribute for individual items - By Zafir Anjum

License

This article has no explicit license attached to it but may contain usage terms in the article text or the download files themselves. If in doubt please contact the author via the discussion board below.

A list of licenses authors might use can be found here

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About the Author

lion
Software Developer (Senior)
Germany Germany
Lion is a software engineer start working with C/C++ in 1995, after that he move to the internet developing with PERL, PHP, ASP, JSP, MySql. now he since 12 years is working on Object Oriented, Visual C++ (he could say that he speak VC++ better than his nativ language), SDK, MFC, COM, COM+, ATL, ADO, ODBC, Internet technologies, DataBase (MS-SQLServer, ORACLE), named pipe, threading... you name it.
And now he is very interesting in .NET technology, as well in Android development and maybe later in Windows Phone 7.
Lion is originally from Bulgaria, he is working right now in Germany since 2001, developing a hospital/Labor software.

Comments and Discussions

 
QuestionLicense restrictions PinmemberJim Kotelly15-Jun-12 5:17 
QuestionFull row select (HIGHLIGHTED) Pinmemberfurtel2-Sep-11 2:45 
QuestionJapanese error SetItemColor change text to garbage characters Pinmemberyotamwimmer16-Aug-11 19:07 
GeneralAnother way to do this without redrawing PinmemberMike Heskamp19-Nov-09 10:24 
When working with this, it worked well but there are a few draw backs resulting from having to draw the text on top of MFC's text: the text will need to be shifted for larger windows fonts, and I have noticed an issue on a foreign system with the text not lining up properly. Here is another way to do this within the drawing frame work in place by using custom drawing:
 
Override OnCustomDraw(NMHDR* pNMHDR, LRESULT* pResult):
 
In the header, add
afx_msg void OnCustomDraw(NMHDR* pNMHDR, LRESULT* pResult);
 
In Message Map, add
ON_NOTIFY_REFLECT(NM_CUSTOMDRAW, OnCustomDraw)
 
Then in the OnCustomDraw() function, you can tell it to loop through the items with each call and access each item individually setting the font color.
 
This microsoft article is helpful with explaining the process of handling prepainting, postpainting, etc. and it tells what results to pass back to control the behavior: http://msdn.microsoft.com/en-us/library/bb761817(VS.85).aspx#list_tree[^]
 
To change an items color, cast the NMHDR structure:
  LPNMLVCUSTOMDRAW lplvcd = (LPNMLVCUSTOMDRAW)pNMHDR;
 
Handle each painting case as described in the article and change color in CDDS_ITEMPREPAINT. To loop through each item with subsequent OnCustomDraw() calls, return CDRF_NOTIFYSUBITEMDRAW in the CDDS_PREPAINT stage:
 
  switch(lplvcd->nmcd.dwDrawStage)
  {
    case CDDS_PREPAINT:
      *pResult = CDRF_NOTIFYSUBITEMDRAW;
      break;   
 
    case CDDS_ITEMPREPAINT:
    {
      // Get the tree item to do whatever process needed to determine color
      HTREEITEM hTreeItem = (HTREEITEM)lplvcd->nmcd.dwItemSpec;
 
      // Set the item color
      lplvcd->clrText = RGB(225,0,0);
 
      // Color was changed, so send new font notification
      *pResult = CDRF_NEWFONT;
      break;
    }
 
    case CDDS_ITEMPOSTPAINT:
      *pResult = CDRF_DODEFAULT;
      break;
 
    default:
      *pResult = CDRF_DODEFAULT;
      break;
  }
 
Hope this helps...
 
mike
GeneralRe: Another way to do this without redrawing Pinmemberzhuweiping21-Dec-09 16:30 
GeneralActually, I need the Colorful TreeView in my project. Pinmembersnookermx8-Sep-09 17:43 
GeneralCTreeCtrlEx in a CTreeView Pinmembermimosa21-Jun-09 13:32 
GeneralCTreeCtrlEx license restrictions PinmemberclintM22-Apr-09 7:45 
GeneralUpdating the GUI Pinmemberkydyl9-Oct-07 21:00 
GeneralOverloaded DeleteItem() and DeleteAllItems() PinmemberChristoph Conrad29-Aug-07 5:21 
GeneralRe: Overloaded DeleteItem() and DeleteAllItems() PinmemberGukki25-May-08 22:46 
GeneralHorizontal scrollbar missing PinmemberAndreas Gut11-Nov-05 2:39 
GeneralFunctionality Enhancement Request - Custom Highlight Color Pinmembertytan7-Jun-05 19:59 
Questionhow to i change selected item bk and fg color PinmemberJiten D. Gandhi16-Mar-05 20:31 
GeneralSetting Text Background Color Pinsussmister trunks5-Nov-03 10:31 
GeneralRe: Setting Text Background Color PinmemberSamuele27-Nov-03 3:06 
GeneralRe: Setting Text Background Color Pinmembermister trunks9-Dec-03 5:34 
AnswerRe: Setting Text Background Color Pinmemberstokos6-Mar-06 23:57 
GeneralRe: Setting Text Background Color PinmemberSamuele8-Mar-06 2:07 
AnswerRe: Setting Text Background Color Pinmemberstokos9-Mar-06 1:59 
GeneralRe: Setting Text Background Color PinmemberSamuele9-Mar-06 4:05 
GeneralIME Issue in Tree Control...!! Pinmemberboonshajayan25-Aug-03 22:33 
QuestionHow to display a turecolor image or icon in the treectrl? PinmemberJack_Cai24-Apr-03 3:32 
GeneralBug when changing item height PinmemberAlex Hazanov16-Apr-03 1:45 
Generalhelp Pinmemberxuchuangeng30-Dec-02 0:58 

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