当您单击左窗格树控件时，如何在右窗格的编辑框中显示数据 [英] How to display the data in edit box of right pane when u click on the left pane tree control

问题描述

我已经在MFC中创建了MDI应用程序，我已经完成了左右窗格的分割页面，并且我已经在左侧添加了树​​控件并在右窗格中编辑了控件。



我的问题是如何在你点击树控件时从INI文件中获取数据，并且数据应该显示在右窗格中。



我尝试过：

 void CFormLeft :: OnInitialUpdate（）
 {
 CFormView :: OnInitialUpdate（）; 
 
 HTREEITEM hParent = m_TreeCtrl.InsertItem（LSTUDENT DETAILS，TVI_ROOT）; 
 HTREEITEM hChild = m_TreeCtrl.InsertItem（LSTUDETN1，hParent，TVI_LAST）; 
 HTREEITEM hChild1 = m_TreeCtrl.InsertItem（LSTUDETN2，hParent，TVI_LAST）; 
 HTREEITEM hChild2 = m_TreeCtrl.InsertItem（LSTUDETN3，hParent，TVI_LAST）; 
 HTREEITEM hChild3 = m_TreeCtrl.InsertItem（LSTUDETN4，hParent，TVI_LAST）; 
 HTREEITEM hChild4 = m_TreeCtrl.InsertItem（LSTUDETN5，hParent，TVI_LAST）; 
 
 
 // HTREEITEM hItem = m_TreeCtrl.GetSelectedItem（）; 
 
 // CString strItemText = m_TreeCtrl.GetItemText（hItem）; 
} 
 
无效CFormLeft :: OnSelchangedTree1（NMHDR * pNMHDR，LRESULT * pResult）
 {
 NM_TREEVIEW * pNMTreeView =（NM_TREEVIEW *）pNMHDR; 
 
 // TODO：在这里添加你的控制通知处理程序代码
 HTREEITEM hItem = m_TreeCtrl.GetSelectedItem（）; 
 CString strItemText = m_TreeCtrl.GetItemText（hItem）; 
 
 // MessageBox（strItemText）; 
 //m_student1.SetWindowText(L\"DETAILS OF SURESH）; 
 
 * pResult = 0; 

解决方案

您需要访问包含编辑控件的右侧窗格。怎么做取决于你的窗格是如何组织的。



我假设一个 CSplitterWnd 包含两个静态窗格树控件和编辑控件。然后你有三个选择：

1. 从父窗口创建时将信息传递给 CFormLeft 类
   
   
2. 从父窗口获取运行时的信息
   
   
3. 将相应的功能添加到父窗口
   
   

在所有情况下，父窗口（ CSplitterWnd ）窗口应该包含窗格的成员（ CLeftPane 和 CRightPane ）。



及其指针（）作为父参数传递。





第一种情况是将 CRightPane * 成员添加到以某种方式初始化的 CLeftPane 类中（构造函数或setter函数） ;从父窗口调用）。



对于第二种情况，实现一个函数从分割器父窗口获取指向右窗格的指针，转换父窗口从内部 CLeftPane 并调用getter函数

 CMySplitterWnd * pParent =（CMySplitterWnd *）GetParent（）; 
  //  必须实施： 
  //   CRightPane * CMySplitterWnd :: GetRightPane（）{return m_pRightPane; }  
 CRightPane * pRightPane = pParent-> GetRightPane（）; 

一旦有了指向右侧窗格视图的指针，就可以调用功能或根据需要发送消息。如有必要，可以为 CRightPane * 类添加函数以执行特定任务（例如，用于访问编辑控件）。



对于第三种情况，在父级中实现一个将命令转发到右窗格的函数

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

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;

解决方案

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:

1. Passing the information to your CFormLeft class upon creation from the parent window
   
2. Get the information during run-time from the parent window
   
3. 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

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

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

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