CTreeCtrl study

常用接口

插入

可以设置 data 然后根据选中的 data 来判断是哪个。

auto item = m_ctrl_tree.InsertItem(L"几何常数");
m_ctrl_tree.InsertItem(L"测量工步");
m_ctrl_tree.InsertItem(L"预处理");

SetItemImage

BOOL SetItemImage(
    HTREEITEM hItem,
    int nImage,
    int nSelectedImage);

Notify

NM_CLICK

ON_NOTIFY(NM_CLICK, 4, &CFolderView::OnNMClickTree)

void OnNMClickTree(NMHDR *pNMHDR, LRESULT *pResult);

void CFolderView::OnNMClickTree(NMHDR *pNMHDR, LRESULT *pResult)
{
     g_pwndMain->m_spWndFileList->ActivateFrame();
    *pResult = 0;
}

typedef struct tagNMHDR
{
    HWND     hwndFrom;
    UINT_PTR idFrom;
    UINT     code;
} NMHDR;

TVN_SELCHANGING

ON_NOTIFY(TVN_SELCHANGING, 4, &CFolderView::OnTvnSelchangingFolder)

afx_msg void OnTvnSelchangingFolder(NMHDR *pNMHDR, LRESULT *pResult);

void CFolderView::OnTvnSelchangingFolder(NMHDR *pNMHDR, LRESULT *pResult)
{
	LPNMTREEVIEW pNMTreeView = reinterpret_cast<LPNMTREEVIEW>(pNMHDR);
	// TODO: Add your control notification handler code here
	*pResult = 0;
}

TVN_SELCHANGED

ON_NOTIFY(TVN_SELCHANGED, 4, &CFolderView::OnTvnSelchangedFolder)

void OnTvnSelchangedFolder(NMHDR *pNMHDR, LRESULT *pResult);

void CFolderView::OnTvnSelchangedFolder(NMHDR *pNMHDR, LRESULT *pResult)
{
    LPNMTREEVIEW pNMTreeView = reinterpret_cast<LPNMTREEVIEW>(pNMHDR);
    HTREEITEM hItem = pNMTreeView->itemNew.hItem;
    if (hItem == 0)
    {
        return;
    }
    if (hItem != m_curDbRootItem)
    {
        m_wndTree.SetItemImage(hItem, 1, 1);
    } 
    if (pNMTreeView->itemOld.hItem != m_curDbRootItem)
    {
        m_wndTree.SetItemImage(pNMTreeView->itemOld.hItem, 2, 2);
    }
    m_wndTree.Expand(pNMTreeView->itemNew.hItem, TVE_EXPAND);
    
    *pResult = 0;
}