How to display the data in edit box of right pane when u click on the left pane tree control

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I have created the MDI app in MFC , I have done up to splitted page as left and right pane ,And I have added the tree control in left and edit control in right pane as well.

My problem is how to get the data from INI file the moment when u click on the tree control and the data should be displayed in right pane.

What I have tried:

void CFormLeft::OnInitialUpdate()
{
	CFormView::OnInitialUpdate();

	HTREEITEM hParent = m_TreeCtrl.InsertItem(L"STUDENT DETAILS", TVI_ROOT);
	HTREEITEM hChild = m_TreeCtrl.InsertItem(L"STUDETN1", hParent, TVI_LAST);
	HTREEITEM hChild1 = m_TreeCtrl.InsertItem(L"STUDETN2", hParent, TVI_LAST);
	HTREEITEM hChild2 = m_TreeCtrl.InsertItem(L"STUDETN3", hParent, TVI_LAST);
	HTREEITEM hChild3 = m_TreeCtrl.InsertItem(L"STUDETN4", hParent, TVI_LAST);
	HTREEITEM hChild4 = m_TreeCtrl.InsertItem(L"STUDETN5", hParent, TVI_LAST);
	

	//HTREEITEM hItem = m_TreeCtrl.GetSelectedItem();

	//CString strItemText = m_TreeCtrl.GetItemText(hItem);
}

void CFormLeft::OnSelchangedTree1(NMHDR *pNMHDR, LRESULT *pResult)
{
	NM_TREEVIEW* pNMTreeView = (NM_TREEVIEW*)pNMHDR;

	// TODO: Add your control 	notification handler code here
	HTREEITEM hItem = m_TreeCtrl.GetSelectedItem();
	CString strItemText = m_TreeCtrl.GetItemText(hItem);

	//MessageBox(strItemText);
	//m_student1.SetWindowText(L"DETAILS OF SURESH");
	
	*pResult = 0;

Posted 7-Nov-17 2:48am

Member 13460634

Updated 7-Nov-17 3:44am

v3

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Richard MacCutchan 7-Nov-17 9:39am

The usual way is for the TreeView event handler to send a message to the other Window.

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Jochen Arndt · Answer 1 · 2017-11-07T03:44:00

You need access to the right pane that contains the edit control. How to do that depends on how your panes are organised.

I assume a CSplitterWnd with two static panes containing a tree control and an edit control. Then you have three options:

Passing the information to your CFormLeft class upon creation from the parent window
Get the information during run-time from the parent window
Add appropriate functions to the parent window

In all cases the parent (CSplitterWnd) window should have members for the panes (CLeftPane and CRightPane).
[EDIT]
and a pointer to it (this) must be passed as parent parameter when creating the pane views.
[EDIT]

For the first case add a CRightPane* member to your CLeftPane class that is initialised in some way (constructor or a setter function; both called from the parent window).

For the second case implement a function to get a pointer to the right pane from the splitter parent window, cast the parent window from within CLeftPane and call the getter function

C++

CMySplitterWnd *pParent = (CMySplitterWnd *)GetParent();
// Must be implemented:
// CRightPane* CMySplitterWnd::GetRightPane() { return m_pRightPane; }
CRightPane* pRightPane = pParent->GetRightPane();

Once you have the pointer to the right pane view, you can call functions or send messages as required. If necessary add functions to the CRightPane* class for specific tasks (e.g. for accessing the edit control).

For the third case implement a function in the parent that forwards commands to the right pane

C++

CMySplitterWnd *pParent = (CMySplitterWnd *)GetParent();
// Must be implemented:
// CMySplitterWnd::SetRightPaneEditText(const CString& s)
// { 
// m_pRightPane->m_editCtrl.SetWindowText(strItem); 
// }
pParent->SetRightPaneEditText(strItemText);