VC++窗口分割与通信实例
1.使用MFC建立一个SDI(基类为View)，工程名为SplitWndDemo；
2.在 CMainFrame中增加变量
public:
CSplitterWnd m_wndSplitter;
3.增加左右视图类，CLeftTreeView:public: CTreeView,如下：
#include <afxcview.h>
/////////////////////////////////////////////////////////////////////////////
// CLeftTreeView view
#include "TestDlg.h"
class CLeftTreeView : public CTreeView
#include "TestDlg.h"
/////////////////////////////////////////////////////////////////////////////
// CRightView view
CRightView : public CView如下：
class CRightView : public CView
4.重载CMainFrame的OnCreateClient（）函数
BOOL CMainFrame::OnCreateClient(LPCREATESTRUCT lpcs, CCreateContext* pContext)
{
// TODO: Add your specialized code here and/or call the base class
// create splitter window
if (!m_wndSplitter.CreateStatic(this, 1, 2))
return FALSE;
if (!m_wndSplitter.CreateView(0, 0, RUNTIME_CLASS(CLeftTreeView),CSize(200, 100), pContext) ||
!m_wndSplitter.CreateView(0, 1, RUNTIME_CLASS(CRightView), CSize(100, 100), pContext))
{
m_wndSplitter.DestroyWindow();
return FALSE;
}
//set the target for mapped messages
// ((CFormLeft*)m_wndSplitter.GetPane(0,0))->SetTarget(m_wndSplitter.GetPane(0,1));
return TRUE;
}
5.插入一个对话框，假如一个CEdit控件，控件名为IDC_EDIT1，类名为CTestDlg；
6.在CLeftTreeView中增加函数
HTREEITEM FindItem(long lItemData);
HTREEITEM CLeftTreeView::FindItem(long lItemData)
{
// the tree object
CTreeCtrl &tTree = this->GetTreeCtrl ();
// the current item
HTREEITEM tiItem= tTree.GetNextItem(TVGN_ROOT,TVGN_ROOT);
long lCurrentData;
while (tiItem)
{
tTree.Expand(tiItem,TVE_EXPAND);
lCurrentData = (long)tTree.GetItemData(tiItem);
if( lCurrentData == lItemData )
return tiItem;
tiItem= tTree.GetNextItem(tiItem,TVGN_NEXTVISIBLE);
}
return NULL;
}
7.在CLeftTreeView::OnInitialUpdate() 函数中添加代码：
void CLeftTreeView::OnInitialUpdate()
{
CTreeCtrl &tTree = this->GetTreeCtrl ();
// variables to compute new items
long lItemTitle;
CString sItemTitle;
char cItemTitle[10];
int iItemSize;
int iCptr;
// item created
HTREEITEM tiTestNode;
HTREEITEM tiParentNode;
CTreeView::OnInitialUpdate();
// update the tree style
tTree.ModifyStyle ( 0, TVS_HASLINES | TVS_HASBUTTONS | TVS_LINESATROOT);
// Add items to the tree
for(lItemTitle=1; lItemTitle<=999; lItemTitle+=2)
{
ltoa(lItemTitle,cItemTitle,10);
sItemTitle = "";
iItemSize= strlen(cItemTitle);
sItemTitle=sItemTitle+cItemTitle[0];
for(iCptr=1; iCptr<iItemSize; iCptr++)
{
sItemTitle=sItemTitle+"."+cItemTitle[iCptr];
}
// insert the node
tiParentNode = FindItem((long)(lItemTitle/10));
//for the first level nodes
if((long)(lItemTitle/10)==0)
{
tiTestNode = tTree.InsertItem(sItemTitle);
tTree.SetItemData(tiTestNode,lItemTitle);
}
//for the other nodes
if( tiParentNode )
{
tiTestNode = tTree.InsertItem(sItemTitle, tiParentNode);
tTree.SetItemData(tiTestNode,lItemTitle);
}
}
}
8.增加消息响应函数：使用ClassWizard增加消息响应函数CLeftTreeView::OnSelchanged()
void CLeftTreeView::OnSelchanged(NMHDR* pNMHDR, LRESULT* pResult)
{
NM_TREEVIEW* pNMTreeView = (NM_TREEVIEW*)pNMHDR;
// TODO: Add your control notification handler code here
TVITEM item = pNMTreeView->itemNew;
CString strCurSelItemText = this->GetTreeCtrl().GetItemText(item.hItem);
CMainFrame * pMainFrm = (CMainFrame*)AfxGetMainWnd();
CRightView * pRightView = (CRightView *)pMainFrm->m_wndSplitter.GetPane(0,1);
if(pRightView->m_TestDlg.GetSafeHwnd())
{
pRightView->m_TestDlg.SetDlgItemText(IDC_EDIT1,strCurSelItemText);
}
*pResult = 0;
}
9.在CRightView增加变量CTestDlg m_TestDlg;
在 CRightView::OnInitialUpdate() 中添加代码：
void CRightView::OnInitialUpdate()
{
CView::OnInitialUpdate();
// TODO: Add your specialized code here and/or call the base class
if(!m_TestDlg.GetSafeHwnd()) //第一次初始化m_Tab 控件和page页的建立
{
m_TestDlg.Create(IDD_TestDlg,this);
m_TestDlg.ShowWindow(SW_SHOW);
}
}
10.在vCRightView::OnSize()中添加代码：
oid CRightView::OnSize(UINT nType, int cx, int cy)
{
CView::OnSize(nType, cx, cy);
// 让窗体覆盖在上面。
if(m_TestDlg.GetSafeHwnd())
{
CRect rect;
GetClientRect(rect);
m_TestDlg.MoveWindow(rect);
m_TestDlg.ShowWindow(SW_SHOW);
}
// TODO: Add your message handler code here
}
11.编译运行！