征集CTreeCtrl继承类右键菜单问题解决方案：使用LoadMenu方式弹出菜单为菜单左侧竖条

CTreeCtrl继承类部分代码 如下
void CZBTreeCtrl::OnRclick(NMHDR* pNMHDR, LRESULT* pResult)
{
    CPoint point;
    GetCursorPos(&point);

    HTREEITEM item;

    UINT flag = TVHT_ONITEM;

    item = this->HitTest(point, &flag);
               HTREEITEM hItem =this->GetDropHilightItem( );
    if(hItem!=NULL)
        this->Select(hItem,TVGN_CARET);
    else
        hItem=this->GetSelectedItem();

    if(hItem != NULL)
    {
            CMenu menu;
            menu.LoadMenu(IDR_POPUP_MENU);
            menu.TrackPopupMenu(TPM_LEFTALIGN |
                             TPM_RIGHTBUTTON, point.x, point.y, this);
           }
    *pResult = 0;
}

效果如图1


而如下方式则可以正确显示
void CZBTreeCtrl::OnRclick(NMHDR* pNMHDR, LRESULT* pResult)
{
    HTREEITEM hItem =this->GetDropHilightItem( );
    if(hItem!=NULL)
        this->Select(hItem,TVGN_CARET);
    else
        hItem=this->GetSelectedItem();
    CMenu menu;
    POINT point;
    GetCursorPos(&point);
    menu.CreatePopupMenu();
    menu.AppendMenu(MF_STRING,ID_ZB_MENU1,"菜单1");
    menu.AppendMenu(MF_STRING, ID_ZB_MENU2, "菜单2");
    menu.AppendMenu(MF_STRING, ID_ZB_MENU3, "菜单3");
    menu.AppendMenu(MF_STRING, ID_ZB_MENU4 "菜单4");

    if(hItem==NULL)
    {
        menu.EnableMenuItem(ID_ZB_TURNOFF, MF_GRAYED);
        menu.EnableMenuItem(ID_ZB_ADJUSTPOWER, MF_GRAYED);
        menu.EnableMenuItem(ID_ZB_MAXPOWER, MF_GRAYED);
        menu.EnableMenuItem(ID_ZB_STATE, MF_GRAYED);
    }
   
    menu.TrackPopupMenu(TPM_LEFTALIGN |TPM_RIGHTBUTTON,point.x,point.y,this);

    *pResult = 0;
}
效果如图2