trouble in inserting data to tree control

[firebolt77]

Hi..I want to insert a item to an existing tree and I want to make the item become the child of one of the tree members for example: before: root ..|_parent1 ..|_parent2 ..|_parent3 after: root ..|_parent1 ..|_parent2 ......|_(I want to insert my new item in here) ..|_parent3 but I didn't know how to do it. Plz help me because I'm a newbie in MFC programming thx.

[Marc Soleda]

m_treeCtrl.InsertItem. From MSDN: HTREEITEM InsertItem( LPTVINSERTSTRUCT lpInsertStruct ); HTREEITEM InsertItem(UINT nMask, LPCTSTR lpszItem, int nImage, int nSelectedImage, UINT nState, UINT nStateMask, LPARAM lParam, HTREEITEM hParent, HTREEITEM hInsertAfter ); Download this project[^], you'll find it usefull. Marc Soleda. ... she said you are the perfect stranger she said baby let's keep it like this... Tunnel of Love, Dire Straits.

[David Crow]

Call CTreeCtrl::GetItem() on the "parent2" item. Then call CTreeCtrl::InsertItem() to insert the new "child" item below that.

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"Ideas are a dime a dozen. People who put them into action are priceless." - Unknown

[firebolt77]

thx 2 you all for your help. Can a tree control access another atttributes of a data? I am planning to make a tree control from a list of data for example, I am a list of datas, each of data consists of Name, adrress, phone number, etc and I want to make the tree control based on the name. Does it exist any command to access/ display other attributes by clicking the tree element? thx..

[David Crow]

After inserting a node in the tree control, use SetItemData() to associate that node with the item in the list.

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"Ideas are a dime a dozen. People who put them into action are priceless." - Unknown

[firebolt77]

Can u give me some examples pls?because I'm still new in MFC and lack of experience in programming. thx

[David Crow]

http://msdn.microsoft.com/library/default.asp?url=/library/en-us/vclib/html/_mfc_ctreectrl.3a3a.setitemdata.asp[^] In your case, the second parameter to SetItemData() would be an item in your data structure.

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"Ideas are a dime a dozen. People who put them into action are priceless." - Unknown

[firebolt77]

thx...I have read the link u gave me, but I think it is not what I' looking for for example I have a data base file that consist name,age,address,phone number,etc and I want to make a tree control based on the name for example. And then if I click the tree control attributes, I can access the other database attributes such as the age,address,phone,etc. Is there any function or maybe some links to help me..because I'm so confused. thx...

[David Crow]

One way would be to read the records from the database into a data structure and populate the tree control from that data structure.

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"Ideas are a dime a dozen. People who put them into action are priceless." - Unknown

[firebolt77]

thx...I also have some problem on populating the tree control. I want to group the tree attributes if there are same occurences. I have tried to make the function, but when I run it, my program become not responding. here is my function: HTREEITEM CCDBMainDlg::LoadTree(CStringArray& tree) { m_hItem = m_treeCDB.GetNextItem(m_hItem,TVGN_ROOT); if(m_treeCDB.ItemHasChildren(m_hItem)) { m_hItem = m_treeCDB.GetChildItem(m_hItem); while(m_treeCDB.GetItemText(m_hItem).Compare(tree.GetAt(12))!=NULL || m_hItem != NULL) { m_hItem = m_treeCDB.GetNextSiblingItem(m_hItem); } if(m_treeCDB.ItemHasChildren(m_hItem)) { m_hItem = m_treeCDB.GetChildItem(m_hItem); while(m_treeCDB.GetItemText(m_hItem).Compare(tree.GetAt(11))!=NULL || m_hItem != NULL) { m_hItem = m_treeCDB.GetNextSiblingItem(m_hItem); } if(m_treeCDB.ItemHasChildren(m_hItem)) { m_hItem = m_treeCDB.GetChildItem(m_hItem); while(m_treeCDB.GetItemText(m_hItem).Compare(tree.GetAt(0))!=NULL || m_hItem != NULL) { m_hItem = m_treeCDB.GetNextSiblingItem(m_hItem); } } else { m_hItem = m_treeCDB.InsertItem(tree.GetAt(0),0,1,m_hItem); } } else { m_hItem = m_treeCDB.InsertItem(tree.GetAt(11),0,1,m_hItem); m_hItem = m_treeCDB.InsertItem(tree.GetAt(0),0,1,m_hItem); } } else { m_hItem = m_treeCDB.InsertItem(tree.GetAt(12),0,1,m_hItem); m_hItem = m_treeCDB.InsertItem(tree.GetAt(11),0,1,m_hItem); m_hItem = m_treeCDB.InsertItem(tree.GetAt(0),0,1,m_hItem); } m_hItem = m_treeCDB.InsertItem(tree.GetAt(1),0,1,m_hItem); m_treeCDB.EnsureVisible(m_hItem); return m_hItem; } pls help. thx.

[David Crow]

firebolt77 wrote: ...but when I run it, my program become not responding. One of the while loops is not ending. You'll need to set a breakpoint on each one, run the program using F5, and note which breakpoint was not hit. That'll tell you which loop is faulty.

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"Ideas are a dime a dozen. People who put them into action are priceless." - Unknown