ContextMenu Sample (C++)
This sample illustrates context menus, and .
The source code is located at C:\Program Files (x86)\Softelvdm\SftTree DLL 7.5\Samples\MFC\ContextMenu\SamplVw.cpp or C:\Program Files\Softelvdm\SftTree DLL 7.5\Samples\MFC\ContextMenu\SamplVw.cpp (on 32-bit Windows versions).
/****************************************************************************/
/* SftTree/DLL 7.5 - Tree Control for C/C++ */
/* Copyright (C) 1995, 2016 Softel vdm, Inc. All Rights Reserved. */
/****************************************************************************/
#include "stdafx.h"
#include "ContextMenu.h"
#include "sampldoc.h"
#include "samplvw.h"
#ifdef _DEBUG
#undef THIS_FILE
static char BASED_CODE THIS_FILE[] = __FILE__;
#endif
/////////////////////////////////////////////////////////////////////////////
// CSampleView
IMPLEMENT_DYNCREATE(CSampleView, CView)
BEGIN_MESSAGE_MAP(CSampleView, CView)
//{{AFX_MSG_MAP(CSampleView)
ON_WM_CREATE()
ON_WM_SIZE()
ON_WM_CONTEXTMENU()
//}}AFX_MSG_MAP
ON_SFTTREEN_LBUTTONDBLCLK_TEXT(IDC_TREE, OnLButtonExpandCollapse)
ON_SFTTREEN_LBUTTONDOWN_BUTTON(IDC_TREE, OnLButtonExpandCollapse)
ON_SFTTREEN_LBUTTONDBLCLK_BUTTON(IDC_TREE, OnLButtonExpandCollapse)
ON_SFTTREEN_EXPANDALL(IDC_TREE, OnExpandAll)
ON_SFTTREEN_LBUTTONDBLCLK_COLUMNRES(IDC_TREE, OnLButtonDblClkColumnResize)
ON_SFTTREEN_LBUTTONDOWN_COLUMN_HEADER(IDC_TREE, OnColumnHeaderClick)
ON_SFTTREEN_LBUTTONDBLCLK_COLUMN_HEADER(IDC_TREE, OnColumnHeaderClick)
ON_SFTTREEN_LBUTTONDOWN_COLUMN_HEADERDD(IDC_TREE, OnColumnHeaderDDClick)
ON_SFTTREEN_LBUTTONDBLCLK_COLUMN_HEADERDD(IDC_TREE, OnColumnHeaderDDClick)
ON_COMMAND_RANGE( IDM_COLUMN_ENABLE+0, IDM_COLUMN_ENABLE+50, OnColumnEnable)
ON_COMMAND( IDM_COLUMN_ENABLE_ALL, OnColumnEnableAll)
ON_COMMAND( ID_POPUP_ITEM, OnPopupNoptImplemented)
ON_COMMAND( ID_POPUP_EDIT, OnPopupNoptImplemented)
ON_COMMAND( ID_POPUP_INSERT, OnPopupNoptImplemented)
ON_COMMAND( ID_POPUP_APPEND, OnPopupNoptImplemented)
ON_COMMAND( ID_POPUP_DELETE, OnPopupNoptImplemented)
END_MESSAGE_MAP()
/////////////////////////////////////////////////////////////////////////////
// CSampleView construction/destruction
CSampleView::CSampleView()
{
}
CSampleView::~CSampleView()
{
}
/////////////////////////////////////////////////////////////////////////////
// CSampleView drawing
void CSampleView::OnDraw(CDC* pDC)
{
CSampleDoc* pDoc = GetDocument();
ASSERT_VALID(pDoc);
}
/////////////////////////////////////////////////////////////////////////////
// CSampleView diagnostics
#ifdef _DEBUG
void CSampleView::AssertValid() const
{
CView::AssertValid();
}
void CSampleView::Dump(CDumpContext& dc) const
{
CView::Dump(dc);
}
CSampleDoc* CSampleView::GetDocument() // non-debug version is inline
{
ASSERT(m_pDocument->IsKindOf(RUNTIME_CLASS(CSampleDoc)));
return (CSampleDoc*)m_pDocument;
}
#endif //_DEBUG
/////////////////////////////////////////////////////////////////////////////
// CSampleView message handlers
int CSampleView::OnCreate(LPCREATESTRUCT lpCreateStruct)
{
if (CView::OnCreate(lpCreateStruct) == -1)
return -1;
if (!m_Tree.CreateEx(
WS_EX_CLIENTEDGE,
SFTTREESTYLE_NOTIFY | /* Notify parent window */
SFTTREESTYLE_LEFTBUTTONONLY | /* Only respond to left mouse button */
SFTTREESTYLE_SCROLL | /* Honor WS_H/VSCROLL */
WS_HSCROLL | WS_VSCROLL | /* Vertical and horizontal scrollbars */
WS_VISIBLE | WS_CHILD, /* Visible, child window */
CRect(0,0,0,0), /* Location */
this, /* Parent window */
IDC_TREE)) /* Tree control ID */
return -1;
m_Tree.SetShowHeader(TRUE); /* Show column headers */
/* Register the . These pictures are used */
/* for all items in the tree control. All three pictures */
/* must be the same size. */
{
SFT_PICTURE aPic[3];
Sft_InitPicture(&aPic[0]);
Sft_InitPicture(&aPic[1]);
Sft_InitPicture(&aPic[2]);
m_aThreeItemBitmaps[0].LoadBitmap(IDB_EXPANDABLE);/* Expandable bitmap */
Sft_SetPictureBitmap(&aPic[0], m_aThreeItemBitmaps[0]);/* Assign bitmap */
m_aThreeItemBitmaps[1].LoadBitmap(IDB_EXPANDED);/* Expanded bitmap */
Sft_SetPictureBitmap(&aPic[1], m_aThreeItemBitmaps[1]);/* Assign bitmap */
m_aThreeItemBitmaps[2].LoadBitmap(IDB_LEAF);/* bitmap */
Sft_SetPictureBitmap(&aPic[2], m_aThreeItemBitmaps[2]);/* Assign bitmap */
m_Tree.SetPictures(aPic); /* Use */
}
m_Tree.SetItemPictureAlign(TRUE); /* Align item bitmaps */
m_Tree.SetTreeLineStyle(SFTTREE_TREELINE_AUTOMATIC0);/* Dotted (incl. level 0) */
m_Tree.SetShowButtons(TRUE); /* Expand/collapse buttons (level 1..n) */
m_Tree.SetShowButton0(TRUE); /* Show expand/collapse buttons (level 0) */
m_Tree.SetButtons(SFTTREE_BUTTON_AUTOMATIC3);/* Automatic button style 3 */
m_Tree.SetShowGrid(TRUE); /* Show grid */
m_Tree.SetGridStyle(SFTTREE_GRID_BOTH_DOT);/* Dotted */
m_Tree.SetShowTruncated(TRUE); /* Show ... if truncated */
m_Tree.SetSelectionStyle(SFTTREE_SELECTION_CELL1);/* Select first only */
m_Tree.SetSelectionArea(SFTTREE_SELECTIONAREA_ALLCELLS);/* Selection changes by clicking on an item's */
m_Tree.SetFlyby(TRUE); /* Flyby highlighting */
m_Tree.SetUpdateCaretExpandCollapse(FALSE);/* don't update caret location when expand/collapse button clicked */
m_Tree.SetScrollTips(TRUE); /* Show Scrolltips */
m_Tree.SetInheritBgColor(TRUE); /* Inherit background color of first */
m_Tree.SetReorderColumns(TRUE); /* Column reordering */
m_Tree.EnableSortIndicators(TRUE, TRUE);/* Automatic - application must implement sorting */
m_Tree.SetOpenEnded(TRUE); /* Last column width */
m_Tree.SetShowHeaderButtons(TRUE); /* Show column header as buttons */
/* Define control attributes */
{
SFTTREE_CONTROL CtrlInfo;
memset(&CtrlInfo, 0, sizeof(SFTTREE_CONTROL));
CtrlInfo.cbSize = sizeof(SFTTREE_CONTROL);
if (!m_Tree.GetControlInfo(&CtrlInfo))/* Get current settings */
; /* Error handling goes here */
CtrlInfo.fRowColumnHeaderColorsOverrideTheme = TRUE;
/* can override Windows themes */
CtrlInfo.fRowColumnFooterColorsOverrideTheme = TRUE;
/* can override Windows themes */
CtrlInfo.iFlybyStyle = SFTTREE_FLYBY_COL1;
if (!m_Tree.SetControlInfo(&CtrlInfo))/* Save new settings */
; /* Error handling goes here */
}
/* Define columns */
{
SFTTREE_COLUMN_EX aCol[3] = {
{ 0, 0, /* Reserved */
41, /* Width (in pixels) */
ES_LEFT | SFTTREE_TOOLTIP, /* alignment */
ES_LEFT | SFTTREE_HEADER_UP | SFTTREE_HEADER_FILTER,/* Title style */
_T("First Column"), /* Column header title */
NULL, NULL, /* Reserved field and bitmap handle */
SFTTREE_BMP_RIGHT, /* Picture alignment */
0, /* Reserved */
SFTTREE_COL_BGHORIZONTAL | SFTTREE_COL_PROGRESSHORIZONTAL | SFTTREE_COL_PROGRESSSMALL,
0, /* Reserved */
SFTTREE_NOCOLOR, /* Default background color */
SFTTREE_NOCOLOR, /* Default foreground color */
SFTTREE_NOCOLOR, /* Default background color for selected */
SFTTREE_NOCOLOR, /* Default foreground color for selected */
0, /* Real column position (set by SetColumns call) */
0, /* Display column number (display position) */
0, /* Column flag */
0, /* Minimum column width */
0,0, /* Reserved */
{ 0 }, /* Image - none */
TRUE, /* Allow color overrides */
RGB(0,0,0), /* Column header's background color */
RGB(0,0,0), /* Column header's foreground color */
RGB(0,0,0), /* Column header's background color if selected */
RGB(0,0,0), /* Column header's foreground color if selected */
RGB(0,0,0), /* Column header's background color if disabled */
RGB(0,0,0), /* Column header's foreground color if disabled */
RGB(0,0,0), /* Column header's background color if disabled and selected */
RGB(0,0,0), /* Column header's foreground color if disabled and selected */
RGB(0,0,0), /* Column's default background color (ending color for gradient fill) */
RGB(0,0,0), /* Column's default background color if selected (ending color for gradient fill) */
RGB(0,0,0), /* Column's default progressbar color */
RGB(0,0,0), /* Column's default progressbar color (ending color for gradient fill) */
ES_LEFT, /* Footer style */
TEXT(""), /* Column footer title */
NULL, /* Reserved field */
{ 0 }, /* Image - none */
SFTTREE_BMP_LEFT, /* Picture alignment */
TRUE, /* Allow color overrides */
RGB(0,0,0), /* Column footer's background color */
RGB(0,0,0), /* Column footer's foreground color */
RGB(0,0,0), /* Column footer's background color if selected */
RGB(0,0,0), /* Column footer's foreground color if selected */
RGB(0,0,0), /* Column footer's background color if disabled */
RGB(0,0,0), /* Column footer's foreground color if disabled */
RGB(0,0,0), /* Column footer's background color if disabled and selected */
RGB(0,0,0), /* Column footer's foreground color if disabled and selected */
},
{ 0, 0, /* Reserved */
190, /* Width (in pixels) */
ES_LEFT | SFTTREE_TOOLTIP, /* alignment */
ES_LEFT | SFTTREE_HEADER_UP | SFTTREE_HEADER_FILTER,/* Title style */
_T("Second Column"), /* Column header title */
NULL, NULL, /* Reserved field and bitmap handle */
SFTTREE_BMP_RIGHT, /* Picture alignment */
0, /* Reserved */
SFTTREE_COL_BGHORIZONTAL | SFTTREE_COL_PROGRESSHORIZONTAL | SFTTREE_COL_PROGRESSSMALL,
0, /* Reserved */
SFTTREE_NOCOLOR, /* Default background color */
SFTTREE_NOCOLOR, /* Default foreground color */
SFTTREE_NOCOLOR, /* Default background color for selected */
SFTTREE_NOCOLOR, /* Default foreground color for selected */
0, /* Real column position (set by SetColumns call) */
1, /* Display column number (display position) */
0, /* Column flag */
0, /* Minimum column width */
0,0, /* Reserved */
{ 0 }, /* Image - none */
TRUE, /* Allow color overrides */
RGB(0,0,0), /* Column header's background color */
RGB(0,0,0), /* Column header's foreground color */
RGB(0,0,0), /* Column header's background color if selected */
RGB(0,0,0), /* Column header's foreground color if selected */
RGB(0,0,0), /* Column header's background color if disabled */
RGB(0,0,0), /* Column header's foreground color if disabled */
RGB(0,0,0), /* Column header's background color if disabled and selected */
RGB(0,0,0), /* Column header's foreground color if disabled and selected */
RGB(0,0,0), /* Column's default background color (ending color for gradient fill) */
RGB(0,0,0), /* Column's default background color if selected (ending color for gradient fill) */
RGB(0,0,0), /* Column's default progressbar color */
RGB(0,0,0), /* Column's default progressbar color (ending color for gradient fill) */
ES_LEFT, /* Footer style */
TEXT(""), /* Column footer title */
NULL, /* Reserved field */
{ 0 }, /* Image - none */
SFTTREE_BMP_LEFT, /* Picture alignment */
TRUE, /* Allow color overrides */
RGB(0,0,0), /* Column footer's background color */
RGB(0,0,0), /* Column footer's foreground color */
RGB(0,0,0), /* Column footer's background color if selected */
RGB(0,0,0), /* Column footer's foreground color if selected */
RGB(0,0,0), /* Column footer's background color if disabled */
RGB(0,0,0), /* Column footer's foreground color if disabled */
RGB(0,0,0), /* Column footer's background color if disabled and selected */
RGB(0,0,0), /* Column footer's foreground color if disabled and selected */
},
{ 0, 0, /* Reserved */
237, /* Width (in pixels) */
ES_LEFT | SFTTREE_TOOLTIP, /* alignment */
ES_LEFT | SFTTREE_HEADER_UP | SFTTREE_HEADER_FILTER,/* Title style */
_T("Third Column"), /* Column header title */
NULL, NULL, /* Reserved field and bitmap handle */
SFTTREE_BMP_RIGHT, /* Picture alignment */
0, /* Reserved */
SFTTREE_COL_BGHORIZONTAL | SFTTREE_COL_PROGRESSHORIZONTAL | SFTTREE_COL_PROGRESSSMALL,
0, /* Reserved */
SFTTREE_NOCOLOR, /* Default background color */
SFTTREE_NOCOLOR, /* Default foreground color */
SFTTREE_NOCOLOR, /* Default background color for selected */
SFTTREE_NOCOLOR, /* Default foreground color for selected */
0, /* Real column position (set by SetColumns call) */
2, /* Display column number (display position) */
0, /* Column flag */
0, /* Minimum column width */
0,0, /* Reserved */
{ 0 }, /* Image - none */
TRUE, /* Allow color overrides */
RGB(0,0,0), /* Column header's background color */
RGB(0,0,0), /* Column header's foreground color */
RGB(0,0,0), /* Column header's background color if selected */
RGB(0,0,0), /* Column header's foreground color if selected */
RGB(0,0,0), /* Column header's background color if disabled */
RGB(0,0,0), /* Column header's foreground color if disabled */
RGB(0,0,0), /* Column header's background color if disabled and selected */
RGB(0,0,0), /* Column header's foreground color if disabled and selected */
RGB(0,0,0), /* Column's default background color (ending color for gradient fill) */
RGB(0,0,0), /* Column's default background color if selected (ending color for gradient fill) */
RGB(0,0,0), /* Column's default progressbar color */
RGB(0,0,0), /* Column's default progressbar color (ending color for gradient fill) */
ES_LEFT, /* Footer style */
TEXT(""), /* Column footer title */
NULL, /* Reserved field */
{ 0 }, /* Image - none */
SFTTREE_BMP_LEFT, /* Picture alignment */
TRUE, /* Allow color overrides */
RGB(0,0,0), /* Column footer's background color */
RGB(0,0,0), /* Column footer's foreground color */
RGB(0,0,0), /* Column footer's background color if selected */
RGB(0,0,0), /* Column footer's foreground color if selected */
RGB(0,0,0), /* Column footer's background color if disabled */
RGB(0,0,0), /* Column footer's foreground color if disabled */
RGB(0,0,0), /* Column footer's background color if disabled and selected */
RGB(0,0,0), /* Column footer's foreground color if disabled and selected */
}
};
m_Tree.SetColumns(3, aCol); /* Set column attributes */
}
m_Tree.SetShowRowHeader(SFTTREE_ROWSTYLE_BUTTONCOUNT1);/* Row style */
m_Tree.SetRowColHeaderText(_T("?")); /* text */
m_Tree.SetRowColHeaderStyle(ES_LEFT | SFTTREE_HEADER_UP);/* style */
m_Tree.SetCharSearchMode(SFTTREE_CHARSEARCH_ALLCHARS, -1);/* Consider all characters typed */
/* Change the default colors */
{
SFTTREE_COLORS Colors;
m_Tree.GetCtlColors(&Colors); /* Get current color settings */
Colors.colorTreeLines = COLOR_3DDKSHADOW | 0x80000000L;/* Tree line color */
Colors.colorSelBgNoFocus = COLOR_BTNFACE | 0x80000000L;/* Selection background color (no input focus) */
Colors.colorSelFgNoFocus = COLOR_BTNTEXT | 0x80000000L;/* Selection foreground color (no input focus) */
m_Tree.SetCtlColors(&Colors); /* Set new colors */
}
/*------------------------------------------------------------------------------*/
/* Add a few items. */
/*------------------------------------------------------------------------------*/
{
int index;
index = m_Tree.AddString(_T("In this sample, all items offer a context menu"));/* Add an item */
index = m_Tree.AddString(_T("The column headers also offer a context menu"));/* Add another item */
//m_Tree.SetItemLevel(index, 1);/* change level */
m_Tree.SetText(index, 1, _T("2nd Column"));/* Set text in next column */
m_Tree.SetText(index, 2, _T("3nd Column"));/* Set text in next column */
index = m_Tree.AddString(_T("A third item"));/* Add another item */
m_Tree.SetText(index, 1, _T("2nd Column"));/* Set text in next column */
m_Tree.SetText(index, 2, _T("3nd Column"));/* Set text in next column */
index = m_Tree.AddString(_T("The last item"));/* Add another item */
m_Tree.SetText(index, 1, _T("2nd Column"));/* Set text in next column */
m_Tree.SetText(index, 2, _T("3nd Column"));/* Set text in next column */
index = m_Tree.AddString(_T("Item A"));/* Add another item */
index = m_Tree.AddString(_T("Item B"));/* Add another item */
index = m_Tree.AddString(_T("Item C"));/* Add another item */
}
/*------------------------------------------------------------------------------*/
/* Once ALL TREE CONTROL ITEMS HAVE BEEN ADDED, you can set additional tree */
/* control attributes. */
/*------------------------------------------------------------------------------*/
/* Make all column widths optimal, so text and pictures are */
/* not clipped horizontally. */
m_Tree.MakeColumnOptimal(-1, 0, FALSE);/* Make column widths optimal */
/* Make row header width optimal, so text and pictures are */
/* not clipped horizontally. */
m_Tree.MakeRowHeaderOptimal(0, FALSE);/* Make row header width optimal */
m_Tree.RecalcHorizontalExtent(0, FALSE);/* Update horizontal scroll bar */
return 0;
}
void CSampleView::OnSize(UINT nType, int cx, int cy)
{
CView::OnSize(nType, cx, cy);
m_Tree.MoveWindow(0, 0, cx, cy);
}
/* Respond to events as the user clicks on different tree */
/* components. The events handled here can be changed to */
/* suit your application. */
void CSampleView::OnLButtonExpandCollapse()
{
/* get index of item to expand/collapse */
int index = m_Tree.GetExpandCollapseIndex();
/* get current expand/collapsed status */
BOOL fExpanded = m_Tree.GetItemExpand(index);
/* if control key is used we'll expand all */
BOOL fDepth = (::GetKeyState(VK_CONTROL)&0x8000);
if (fExpanded)
m_Tree.Collapse(index, TRUE);
else
m_Tree.Expand(index, TRUE, fDepth);
}
/* Respond to numeric keypad multiply key. */
void CSampleView::OnExpandAll()
{
/* get index of item to expand/collapse */
int index = m_Tree.GetExpandCollapseIndex();
m_Tree.Expand(index, TRUE, TRUE);
}
/* Respond to events as the user double-clicks on the */
/* column resizing area. The events handled here can be */
/* changed to suit your application. */
void CSampleView::OnLButtonDblClkColumnResize()
{
/* Resize column optimally */
int realCol = m_Tree.GetResizeColumn();
if (realCol >= 0) {
m_Tree.MakeColumnOptimal(realCol);/* Make column width optimal */
m_Tree.RecalcHorizontalExtent(0, FALSE);/* Update horizontal scroll bar */
}
}
/* This sample code sorts the selected column (items on */
/* level 0 ONLY) based on the current which */
/* is automatically managed by the tree control. */
void CSampleView::OnColumnHeaderClick()
{
int sortCol, sortStyle;
if (m_Tree.GetSortColumn1(sortCol, sortStyle)) {/* Retrieve the current sort column */
BOOL ascending = (sortStyle == SFTTREE_SORT_ASC);
m_Tree.SortDependents(-1, sortCol,
ascending ? SortCallbackExAscending : SortCallbackExDescending);/* Sort level 0 items using the column and order specified */
}
}
/* Colummn Dropdown/Filter was clicked */
void CSampleView::OnColumnHeaderDDClick()
{
int col = m_Tree.GetHeaderButton();
if (col >= 0) {
CRect rect;
if (m_Tree.GetDisplayHeaderDropDownRect(col, &rect)) {
m_Tree.MapWindowPoints(NULL, &rect);
ShowHeaderMenu(CPoint(rect.left, rect.bottom));
}
}
}
/*------------------------------------------------------------------------------*/
/* This sample code can be used to implement a sorting callback routine. */
/* This routine is called to compare two items while sorting tree control */
/* items using SortDependents. */
/*------------------------------------------------------------------------------*/
int CALLBACK CSampleView::SortCallbackExAscending(HWND hwnd, LPCTSTR lpszString1, LPCTSTR lpszString2, SFTTREE_DWORD_PTR item1, SFTTREE_DWORD_PTR item2)
{
/* In this example, items are sorted in descending order. */
int rc = lstrcmp(lpszString1, lpszString2);
if (rc < 0)
return -1;
else if (rc > 0)
return 1;
return 0;
}
int CALLBACK CSampleView::SortCallbackExDescending(HWND hwnd, LPCTSTR lpszString1, LPCTSTR lpszString2, SFTTREE_DWORD_PTR item1, SFTTREE_DWORD_PTR item2)
{
/* In this example, items are sorted in descending order. */
int rc = lstrcmp(lpszString1, lpszString2);
if (rc > 0)
return -1;
else if (rc < 0)
return 1;
return 0;
}
/**********************************************************************/
/* Context Menu */
/**********************************************************************/
void CSampleView::ShowHeaderMenu(CPoint pt)
{
// the right mouse button was clicked in the column header, display
// a menu to allow the user to hide/show columns
int realCol, displayCol;
int total = 0;
BOOL fAdded = FALSE;
// get column information
LPSFTTREE_COLUMN_EX lpCols;
int nCols = m_Tree.GetColumns(&lpCols);
m_PopupMenu.DestroyMenu();
m_PopupMenu.CreatePopupMenu();
// determine how many columns are currently visible.
// If only one is visible, that menu entry must be grayed, it can't be unchecked
// (or we would have 0 visible columns. Some users might object to that.
for (realCol = 0 ; realCol < nCols ; ++realCol) {
if (lpCols[realCol].width > 0)
++total;
}
// add a menu entry for each column
for (displayCol = 0 ; displayCol < nCols ; ++displayCol) {
int col;
UINT nFlags = MF_STRING;
LPCTSTR lpszMenuText;
// translate the display column # to the actual column number
col = lpCols[displayCol].realPos;
// build a menu item
if (lpCols[col].width > 0) {
if (total == 1)
nFlags |= MF_GRAYED;
nFlags |= MF_CHECKED;
}
if (lpCols[col].minWidth > 0)
nFlags |= MF_GRAYED;
// use title as menu
lpszMenuText = TEXT("(No title)");
if (lpCols[col].lpszTitle && *lpCols[col].lpszTitle)
lpszMenuText = lpCols[col].lpszTitle;
m_PopupMenu.AppendMenu(nFlags, IDM_COLUMN_ENABLE+displayCol, lpszMenuText);
fAdded = TRUE;
}
// if nothing was added to the menu, don't display it
if (fAdded) {
m_PopupMenu.AppendMenu(MF_SEPARATOR, 0, TEXT(""));
m_PopupMenu.AppendMenu(MF_STRING | (total < nCols ? 0 : MF_GRAYED), IDM_COLUMN_ENABLE_ALL, TEXT("Show All"));
// Always send a WM_CANCELMODE to the tree control before displaying a popup menu
m_Tree.SendMessage(WM_CANCELMODE);
// Display the menu
m_PopupMenu.TrackPopupMenu(TPM_LEFTALIGN
#if !defined(_WIN32_WCE)
|TPM_LEFTBUTTON|TPM_RIGHTBUTTON
#endif
, pt.x, pt.y, this, NULL);
}
}
void CSampleView::OnColumnEnableAll()
{
LPSFTTREE_COLUMN_EX lpCols;
int realCol;
int nCols = m_Tree.GetColumns(NULL);
for (realCol = 0 ; realCol < nCols ; ++realCol) {
// the column is no longer locked
m_Tree.GetColumns(&lpCols);
lpCols[realCol].colFlag &= ~SFTTREE_COL_LOCKED;
m_Tree.SetColumns(nCols, lpCols);
// resize the column
m_Tree.MakeColumnOptimal(realCol);
}
m_Tree.RecalcHorizontalExtent();
}
void CSampleView::OnColumnEnable(UINT id)
{
// Get column information
LPSFTTREE_COLUMN_EX lpCols;
int nCols = m_Tree.GetColumns(&lpCols);
// calculate the column number
int displayCol = id - IDM_COLUMN_ENABLE;
// this is the display number, so translate the display column # to
// the actual column number
int realCol = m_Tree.GetRealColumn(displayCol);
// now resize the column
if (lpCols[realCol].width == 0) {
// the column is no longer locked
lpCols[realCol].colFlag &= ~SFTTREE_COL_LOCKED;
// save new attributes
m_Tree.SetColumns(nCols, lpCols);
// optimally resize the column
m_Tree.MakeColumnOptimal(realCol);
} else {
// the column must be locked so the user can't resize it
lpCols[realCol].colFlag |= SFTTREE_COL_LOCKED;
// hide the column
lpCols[realCol].width = 0;
// save new attributes
m_Tree.SetColumns(nCols, lpCols);
}
m_Tree.RecalcHorizontalExtent();
}
void CSampleView::OnPopupNoptImplemented()
{
::MessageBox(NULL, TEXT("This sample doesn't implement any actions for the item menu."),
TEXT("SftTree/DLL Sample"), MB_OK|MB_TASKMODAL);
}
void CSampleView::ShowItemMenu(int index, CPoint pt)
{
// the right mouse button was clicked on an item, display
// a menu for the item
CMenu menu;
CMenu* popupMenu;
m_Tree.SetCurSel(index); // select it
m_Tree.SetCaretIndex(index); // make it the current item
menu.LoadMenu(MAKEINTRESOURCE(IDR_MENU1));
popupMenu = menu.GetSubMenu(0);
CString str;
m_Tree.GetText(index, 0, str);
popupMenu->ModifyMenu(0, MF_BYPOSITION|MF_STRING, ID_POPUP_ITEM, str);
// Always send a WM_CANCELMODE to the tree control before displaying a popup menu
m_Tree.SendMessage(WM_CANCELMODE);
// Display the menu
popupMenu->TrackPopupMenu(TPM_LEFTALIGN
#if !defined(_WIN32_WCE)
|TPM_LEFTBUTTON|TPM_RIGHTBUTTON
#endif
, pt.x, pt.y, this, NULL);
}
void CSampleView::OnContextMenu( CWnd* pWnd, CPoint pt)
{
RECT rect;
int index;
POINT ptTree;
if (pt.x < 0 && pt.y < 0) // Shift+F10 or VK_APPS pressed (not used in this sample)
return;
ptTree = pt;
ScreenToClient(&ptTree);
// check if header right-clicked - we don't show the popup there
m_Tree.GetHeaderRect(-1, &rect);
if (PtInRect(&rect, ptTree))
return;
// check if an item right-clicked
index = m_Tree.CalcIndexFromPointEx(&ptTree);
if (index >= 0 && index < m_Tree.GetCount()) {
// on an item
ShowItemMenu(index, pt);
return;
}
}
On
Off