Step 1: Derive a class from CListCtrl In the code below, CMyListCtrl is the name used for the derived class. You can also derive a class from CListView if you need this functionality in a CView rather than in a control. If you are already working with a sub-class of CListCtrl, you can make the modifications to that class. Step 2: Define HitTestEx() Define an extended HitTest function for the CMyListCtrl class. This function will determine the row index that the point falls over and also determine the column. The HitTestEx() has already been listed and explained in an earlier section and is listed here again for completeness. We need this function if the user interface to initiate the edit is a mouse click or a double click. See the section "Detecting column index of the item clicked". // HitTestEx - Determine the row index and column index for a point // Returns - the row index or -1 if point is not over a row // point - point to be tested. // col - to hold the column index int CMyListCtrl::HitTestEx(CPoint &point, int *col) const { int colnum = 0; int row = HitTest( point, NULL );
if( col ) *col = 0; // Make sure that the ListView is in LVS_REPORT if( (GetWindowLong(m_hWnd, GWL_STYLE) & LVS_TYPEMASK) != LVS_REPORT ) return row; // Get the top and bottom row visible row = GetTopIndex(); int bottom = row + GetCountPerPage(); if( bottom > GetItemCount() ) bottom = GetItemCount();
// Get the number of columns CHeaderCtrl* pHeader = (CHeaderCtrl*)GetDlgItem(0); int nColumnCount = pHeader->GetItemCount(); // Loop through the visible rows for( ;row <=bottom;row++) { // Get bounding rect of item and check whether point falls in it. CRect rect; GetItemRect( row, &rect, LVIR_BOUNDS ); if( rect.PtInRect(point) ) { // Now find the column for( colnum = 0; colnum < nColumnCount; colnum++ ) { int colwidth = GetColumnWidth(colnum); if( point.x >= rect.left && point.x <= (rect.left + colwidth ) ) { if( col ) *col = colnum; return row; } rect.left += colwidth; } } } return -1; }Step 3: Add function to initiate the edit The user interface to initiate an edit for a sub item may be click on an already selected row, a double click or even a push button. We define a helper function to set up the edit control. The helper function takes only the row and column index of the subitem. EditSubLabel() ensures that the row as well as the column is visible before it creates the edit control. It then creates the edit control of the right size and with the proper text justification. The edit control created is of the class CInPlaceEdit which we will define later. // EditSubLabel - Start edit of a sub item label // Returns - Temporary pointer to the new edit control // nItem - The row index of the item to edit // nCol - The column of the sub item. CEdit* CMyListCtrl::EditSubLabel( int nItem, int nCol ) { // The returned pointer should not be saved // Make sure that the item is visible if( !EnsureVisible( nItem, TRUE ) ) return NULL; // Make sure that nCol is valid CHeaderCtrl* pHeader = (CHeaderCtrl*)GetDlgItem(0); int nColumnCount = pHeader->GetItemCount(); if( nCol >= nColumnCount || GetColumnWidth(nCol) < 5 ) return NULL; // Get the column offset int offset = 0; for( int i = 0; i < nCol; i++ ) offset += GetColumnWidth( i ); CRect rect; GetItemRect( nItem, &rect, LVIR_BOUNDS ); // Now scroll if we need to expose the column CRect rcClient; GetClientRect( &rcClient ); if( offset + rect.left < 0 || offset + rect.left > rcClient.right ) { CSize size; size.cx = offset + rect.left; size.cy = 0; Scroll( size ); rect.left -= size.cx; } // Get Column alignment LV_COLUMN lvcol; lvcol.mask = LVCF_FMT; GetColumn( nCol, &lvcol ); DWORD dwStyle ; if((lvcol.fmt&LVCFMT_JUSTIFYMASK) == LVCFMT_LEFT) dwStyle = ES_LEFT; else if((lvcol.fmt&LVCFMT_JUSTIFYMASK) == LVCFMT_RIGHT) dwStyle = ES_RIGHT; else dwStyle = ES_CENTER; rect.left += offset+4; rect.right = rect.left + GetColumnWidth( nCol ) - 3 ; if( rect.right > rcClient.right) rect.right = rcClient.right; dwStyle |= WS_BORDER|WS_CHILD|WS_VISIBLE|ES_AUTOHSCROLL; CEdit *pEdit = new CInPlaceEdit(nItem, nCol, GetItemText( nItem, nCol )); pEdit->Create( dwStyle, rect, this, IDC_IPEDIT ); return pEdit; } Step 4: Handle the scroll messages The CInPlaceEdit class is designed to destroy the edit control and delete the object when it loses focus. Clicking on the scrollbars of the ListView control does not take away the focus from the edit control. We therefore add handlers for the scrollbar messages which force focus away from the edit control by setting the focus to the list view control itself. void CMyListCtrl::OnHScroll(UINT nSBCode, UINT nPos, CScrollBar* pScrollBar) { if( GetFocus() != this ) SetFocus(); CListCtrl::OnHScroll(nSBCode, nPos, pScrollBar); }void CMyListCtrl::OnVScroll(UINT nSBCode, UINT nPos, CScrollBar* pScrollBar) { if( GetFocus() != this ) SetFocus(); CListCtrl::OnVScroll(nSBCode, nPos, pScrollBar); }
Step 5: Handle EndLabelEdit Like the built in edit control for the first column, our edit control also sends the LVN_ENDLABELEDIT notification when the edit is completed. If this notification message isn’t already being handled, add a handler so that any changes made with the edit control can be accepted. void CMyListCtrl::OnEndLabelEdit(NMHDR* pNMHDR, LRESULT* pResult) { LV_DISPINFO *plvDispInfo = (LV_DISPINFO *)pNMHDR; LV_ITEM *plvItem = &plvDispInfo->item; if (plvItem->pszText != NULL) { SetItemText(plvItem->iItem, plvItem->iSubItem, plvItem->pszText); } *pResult = FALSE; } Step 6: Add means for the user to initiate the edit A suggested method for starting an edit of a subitem is to click on a subitem when the item already has the focus. You may choose to provide a different method. The code below is the handler for the WM_LBUTTONDOWN message. An edit control is created to edit a subitem if the subitem is clicked after the item already has the focus. The code checks for the LVS_EDITLABELS style before creating the edit control. It also does not activate the edit control for the first column since editing of the first column is already supported by the list view control. void CMyListCtrl::OnLButtonDown(UINT nFlags, CPoint point) { int index; CListCtrl::OnLButtonDown(nFlags, point); int colnum; if( ( index = HitTestEx( point, &colnum )) != -1 ) { UINT flag = LVIS_FOCUSED; if( (GetItemState( index, flag ) & flag) == flag && colnum > 0) { // Add check for LVS_EDITLABELS if( GetWindowLong(m_hWnd, GWL_STYLE) & LVS_EDITLABELS ) EditSubLabel( index, colnum ); } else SetItemState( index, LVIS_SELECTED | LVIS_FOCUSED , LVIS_SELECTED | LVIS_FOCUSED); } } Step 7: Subclass the CEdit class We need to subclass the CEdit class to provide for our special requirement. The main requirements placed on this class is that It should send the LVN_ENDLABELEDIT message when edit is complete It should expand to accommodate the text It should destroy itself when the edit is complete The edit should be terminated when the user presses the Escape or the Enter key or when the edit control loses focus. The listing of the header file precedes that of the implementation file. The CInPlaceEdit declares four private variables. These are used when the control sends the LVN_ENDLABELEDIT notification. // InPlaceEdit.h : header file /////////////////////////////////////////////////////////////////////////////// // CInPlaceEdit windowclass CInPlaceEdit : public CEdit { // Construction public: CInPlaceEdit(int iItem, int iSubItem, CString sInitText);// Attributes public:// Operations public:// Overrides // ClassWizard generated virtual function overrides //{{AFX_VIRTUAL(CInPlaceEdit) public: virtual BOOL PreTranslateMessage(MSG* pMsg); //}}AFX_VIRTUAL// Implementation public: virtual ~CInPlaceEdit(); // Generated message map functions protected: //{{AFX_MSG(CInPlaceEdit) afx_msg void OnKillFocus(CWnd* pNewWnd); afx_msg void OnNcDestroy(); afx_msg void OnChar(UINT nChar, UINT nRepCnt, UINT nFlags); afx_msg int OnCreate(LPCREATESTRUCT lpCreateStruct); //}}AFX_MSG DECLARE_MESSAGE_MAP() private: int m_iItem; int m_iSubItem; CString m_sInitText; BOOL m_bESC; // To indicate whether ESC key was pressed };///////////////////////////////////////////////////////////////////////////// The listing of the implementation file now follows. The CInPlaceEdit constructor simply saves the values passed through its arguments and initializes m_bESC to false. The overridden PreTranslateMessage() is to ascertain that certain key strokes do make it to the edit control. The escape key and the enter key are normally pre-translated by the CDialog or the CFormView object, we therefore specifically check for these and pass it on to the edit control. The check for GetKeyState( VK_CONTROL) makes sure that key combinations such as Ctrl-C, Ctrl-V and Ctrl-X get forwarded to the edit control. OnKillFocus() sends of the LVN_ENDLABELEDIT notification and destroys the edit control. The notification is sent to the parent of the list view control and not to the list view control itself. When sending the notification, the m_bESC member variable is used to determine whether to send a NULL string. The OnNcDestroy() function is the appropriate place to destroy the C++ object. The OnChar() function ends the edit if the Escape or the Enter key is pressed. It does this by setting focus to the list view control which force the OnKillFocus() of the edit control to be called. For any other character, the OnChar() function lets the base class function take care of it before it tries to determine if the control needs to be resized. The function first gets the extent of the new string using the proper font and then compares it to the current dimension of the edit control. If the string is too long to fit within the edit control, it resizes the edit control after checking the parent window ( the list view control ) to determine if there is space for the edit control to grow.
The OnCreate() function creates the edit control and initializes it with the proper values. // InPlaceEdit.cpp : implementation file //#include "stdafx.h" #include "InPlaceEdit.h"#ifdef _DEBUG #define new DEBUG_NEW #undef THIS_FILE static char THIS_FILE[] = __FILE__; #endif///////////////////////////////////////////////////////////////////////////// // CInPlaceEditCInPlaceEdit::CInPlaceEdit(int iItem, int iSubItem, CString sInitText) :m_sInitText( sInitText ) { m_iItem = iItem; m_iSubItem = iSubItem; m_bESC = FALSE; }CInPlaceEdit::~CInPlaceEdit() { } BEGIN_MESSAGE_MAP(CInPlaceEdit, CEdit) //{{AFX_MSG_MAP(CInPlaceEdit) ON_WM_KILLFOCUS() ON_WM_NCDESTROY() ON_WM_CHAR() ON_WM_CREATE() //}}AFX_MSG_MAP END_MESSAGE_MAP()///////////////////////////////////////////////////////////////////////////// // CInPlaceEdit message handlersBOOL CInPlaceEdit::PreTranslateMessage(MSG* pMsg) { if( pMsg->message == WM_KEYDOWN ) { if(pMsg->wParam == VK_RETURN || pMsg->wParam == VK_DELETE || pMsg->wParam == VK_ESCAPE || GetKeyState( VK_CONTROL) ) { ::TranslateMessage(pMsg); ::DispatchMessage(pMsg); return TRUE; // DO NOT process further } } return CEdit::PreTranslateMessage(pMsg); } void CInPlaceEdit::OnKillFocus(CWnd* pNewWnd) { CEdit::OnKillFocus(pNewWnd); CString str; GetWindowText(str); // Send Notification to parent of ListView ctrl LV_DISPINFO dispinfo; dispinfo.hdr.hwndFrom = GetParent()->m_hWnd; dispinfo.hdr.idFrom = GetDlgCtrlID(); dispinfo.hdr.code = LVN_ENDLABELEDIT; dispinfo.item.mask = LVIF_TEXT; dispinfo.item.iItem = m_iItem; dispinfo.item.iSubItem = m_iSubItem; dispinfo.item.pszText = m_bESC ? NULL : LPTSTR((LPCTSTR)str); dispinfo.item.cchTextMax = str.GetLength(); GetParent()->GetParent()->SendMessage( WM_NOTIFY, GetParent()->GetDlgCtrlID(), (LPARAM)&dispinfo ); DestroyWindow(); }void CInPlaceEdit::OnNcDestroy() { CEdit::OnNcDestroy(); delete this; } void CInPlaceEdit::OnChar(UINT nChar, UINT nRepCnt, UINT nFlags) { if( nChar == VK_ESCAPE || nChar == VK_RETURN) { if( nChar == VK_ESCAPE ) m_bESC = TRUE; GetParent()->SetFocus(); return; } CEdit::OnChar(nChar, nRepCnt, nFlags); // Resize edit control if needed // Get text extent CString str; GetWindowText( str ); CWindowDC dc(this); CFont *pFont = GetParent()->GetFont(); CFont *pFontDC = dc.SelectObject( pFont ); CSize size = dc.GetTextExtent( str ); dc.SelectObject( pFontDC ); size.cx += 5; // add some extra buffer // Get client rect CRect rect, parentrect; GetClientRect( &rect ); GetParent()->GetClientRect( &parentrect ); // Transform rect to parent coordinates ClientToScreen( &rect ); GetParent()->ScreenToClient( &rect ); // Check whether control needs to be resized // and whether there is space to grow if( size.cx > rect.Width() ) { if( size.cx + rect.left < parentrect.right ) rect.right = rect.left + size.cx; else rect.right = parentrect.right; MoveWindow( &rect ); } }int CInPlaceEdit::OnCreate(LPCREATESTRUCT lpCreateStruct) { if (CEdit::OnCreate(lpCreateStruct) == -1) return -1; // Set the proper font CFont* font = GetParent()->GetFont(); SetFont(font); SetWindowText( m_sInitText ); SetFocus(); SetSel( 0, -1 ); return 0; }
In the code below, CMyListCtrl is the name used for the derived class. You can also derive a class from CListView if you need this functionality in a CView rather than in a control. If you are already working with a sub-class of CListCtrl, you can make the modifications to that class.
Step 2: Define HitTestEx()
Define an extended HitTest function for the CMyListCtrl class. This function will determine the row index that the point falls over and also determine the column. The HitTestEx() has already been listed and explained in an earlier section and is listed here again for completeness. We need this function if the user interface to initiate the edit is a mouse click or a double click. See the section "Detecting column index of the item clicked".
// HitTestEx - Determine the row index and column index for a point
// Returns - the row index or -1 if point is not over a row
// point - point to be tested.
// col - to hold the column index
int CMyListCtrl::HitTestEx(CPoint &point, int *col) const
{
int colnum = 0;
int row = HitTest( point, NULL );
if( col ) *col = 0; // Make sure that the ListView is in LVS_REPORT
if( (GetWindowLong(m_hWnd, GWL_STYLE) & LVS_TYPEMASK) != LVS_REPORT )
return row; // Get the top and bottom row visible
row = GetTopIndex();
int bottom = row + GetCountPerPage();
if( bottom > GetItemCount() )
bottom = GetItemCount();
// Get the number of columns
CHeaderCtrl* pHeader = (CHeaderCtrl*)GetDlgItem(0);
int nColumnCount = pHeader->GetItemCount(); // Loop through the visible rows
for( ;row <=bottom;row++)
{
// Get bounding rect of item and check whether point falls in it.
CRect rect;
GetItemRect( row, &rect, LVIR_BOUNDS );
if( rect.PtInRect(point) )
{
// Now find the column
for( colnum = 0; colnum < nColumnCount; colnum++ )
{
int colwidth = GetColumnWidth(colnum);
if( point.x >= rect.left
&& point.x <= (rect.left + colwidth ) )
{
if( col ) *col = colnum;
return row;
}
rect.left += colwidth;
}
}
}
return -1;
}Step 3: Add function to initiate the edit
The user interface to initiate an edit for a sub item may be click on an already selected row, a double click or even a push button. We define a helper function to set up the edit control. The helper function takes only the row and column index of the subitem. EditSubLabel() ensures that the row as well as the column is visible before it creates the edit control. It then creates the edit control of the right size and with the proper text justification. The edit control created is of the class CInPlaceEdit which we will define later.
// EditSubLabel - Start edit of a sub item label
// Returns - Temporary pointer to the new edit control
// nItem - The row index of the item to edit
// nCol - The column of the sub item.
CEdit* CMyListCtrl::EditSubLabel( int nItem, int nCol )
{
// The returned pointer should not be saved // Make sure that the item is visible
if( !EnsureVisible( nItem, TRUE ) ) return NULL; // Make sure that nCol is valid
CHeaderCtrl* pHeader = (CHeaderCtrl*)GetDlgItem(0);
int nColumnCount = pHeader->GetItemCount();
if( nCol >= nColumnCount || GetColumnWidth(nCol) < 5 )
return NULL; // Get the column offset
int offset = 0;
for( int i = 0; i < nCol; i++ )
offset += GetColumnWidth( i ); CRect rect;
GetItemRect( nItem, &rect, LVIR_BOUNDS ); // Now scroll if we need to expose the column
CRect rcClient;
GetClientRect( &rcClient );
if( offset + rect.left < 0 || offset + rect.left > rcClient.right )
{
CSize size;
size.cx = offset + rect.left;
size.cy = 0;
Scroll( size );
rect.left -= size.cx;
} // Get Column alignment
LV_COLUMN lvcol;
lvcol.mask = LVCF_FMT;
GetColumn( nCol, &lvcol );
DWORD dwStyle ;
if((lvcol.fmt&LVCFMT_JUSTIFYMASK) == LVCFMT_LEFT)
dwStyle = ES_LEFT;
else if((lvcol.fmt&LVCFMT_JUSTIFYMASK) == LVCFMT_RIGHT)
dwStyle = ES_RIGHT;
else dwStyle = ES_CENTER; rect.left += offset+4;
rect.right = rect.left + GetColumnWidth( nCol ) - 3 ;
if( rect.right > rcClient.right) rect.right = rcClient.right; dwStyle |= WS_BORDER|WS_CHILD|WS_VISIBLE|ES_AUTOHSCROLL;
CEdit *pEdit = new CInPlaceEdit(nItem, nCol, GetItemText( nItem, nCol ));
pEdit->Create( dwStyle, rect, this, IDC_IPEDIT );
return pEdit;
}
Step 4: Handle the scroll messages
The CInPlaceEdit class is designed to destroy the edit control and delete the object when it loses focus. Clicking on the scrollbars of the ListView control does not take away the focus from the edit control. We therefore add handlers for the scrollbar messages which force focus away from the edit control by setting the focus to the list view control itself. void CMyListCtrl::OnHScroll(UINT nSBCode, UINT nPos, CScrollBar* pScrollBar)
{
if( GetFocus() != this ) SetFocus();
CListCtrl::OnHScroll(nSBCode, nPos, pScrollBar);
}void CMyListCtrl::OnVScroll(UINT nSBCode, UINT nPos, CScrollBar* pScrollBar)
{
if( GetFocus() != this ) SetFocus();
CListCtrl::OnVScroll(nSBCode, nPos, pScrollBar);
}
Like the built in edit control for the first column, our edit control also sends the LVN_ENDLABELEDIT notification when the edit is completed. If this notification message isn’t already being handled, add a handler so that any changes made with the edit control can be accepted. void CMyListCtrl::OnEndLabelEdit(NMHDR* pNMHDR, LRESULT* pResult)
{
LV_DISPINFO *plvDispInfo = (LV_DISPINFO *)pNMHDR;
LV_ITEM *plvItem = &plvDispInfo->item; if (plvItem->pszText != NULL)
{
SetItemText(plvItem->iItem, plvItem->iSubItem, plvItem->pszText);
}
*pResult = FALSE;
}
Step 6: Add means for the user to initiate the edit
A suggested method for starting an edit of a subitem is to click on a subitem when the item already has the focus. You may choose to provide a different method. The code below is the handler for the WM_LBUTTONDOWN message. An edit control is created to edit a subitem if the subitem is clicked after the item already has the focus. The code checks for the LVS_EDITLABELS style before creating the edit control. It also does not activate the edit control for the first column since editing of the first column is already supported by the list view control.
void CMyListCtrl::OnLButtonDown(UINT nFlags, CPoint point)
{
int index;
CListCtrl::OnLButtonDown(nFlags, point); int colnum;
if( ( index = HitTestEx( point, &colnum )) != -1 )
{
UINT flag = LVIS_FOCUSED;
if( (GetItemState( index, flag ) & flag) == flag && colnum > 0)
{
// Add check for LVS_EDITLABELS
if( GetWindowLong(m_hWnd, GWL_STYLE) & LVS_EDITLABELS )
EditSubLabel( index, colnum );
}
else
SetItemState( index, LVIS_SELECTED | LVIS_FOCUSED ,
LVIS_SELECTED | LVIS_FOCUSED);
}
}
Step 7: Subclass the CEdit class
We need to subclass the CEdit class to provide for our special requirement. The main requirements placed on this class is that
It should send the LVN_ENDLABELEDIT message when edit is complete
It should expand to accommodate the text
It should destroy itself when the edit is complete
The edit should be terminated when the user presses the Escape or the Enter key or when the edit control loses focus.
The listing of the header file precedes that of the implementation file. The CInPlaceEdit declares four private variables. These are used when the control sends the LVN_ENDLABELEDIT notification.
// InPlaceEdit.h : header file
///////////////////////////////////////////////////////////////////////////////
// CInPlaceEdit windowclass CInPlaceEdit : public CEdit
{
// Construction
public:
CInPlaceEdit(int iItem, int iSubItem, CString sInitText);// Attributes
public:// Operations
public:// Overrides
// ClassWizard generated virtual function overrides
//{{AFX_VIRTUAL(CInPlaceEdit)
public:
virtual BOOL PreTranslateMessage(MSG* pMsg);
//}}AFX_VIRTUAL// Implementation
public:
virtual ~CInPlaceEdit(); // Generated message map functions
protected:
//{{AFX_MSG(CInPlaceEdit)
afx_msg void OnKillFocus(CWnd* pNewWnd);
afx_msg void OnNcDestroy();
afx_msg void OnChar(UINT nChar, UINT nRepCnt, UINT nFlags);
afx_msg int OnCreate(LPCREATESTRUCT lpCreateStruct);
//}}AFX_MSG DECLARE_MESSAGE_MAP()
private:
int m_iItem;
int m_iSubItem;
CString m_sInitText;
BOOL m_bESC; // To indicate whether ESC key was pressed
};/////////////////////////////////////////////////////////////////////////////
The listing of the implementation file now follows. The CInPlaceEdit constructor simply saves the values passed through its arguments and initializes m_bESC to false. The overridden PreTranslateMessage() is to ascertain that certain key strokes do make it to the edit control. The escape key and the enter key are normally pre-translated by the CDialog or the CFormView object, we therefore specifically check for these and pass it on to the edit control. The check for GetKeyState( VK_CONTROL) makes sure that key combinations such as Ctrl-C, Ctrl-V and Ctrl-X get forwarded to the edit control.
OnKillFocus() sends of the LVN_ENDLABELEDIT notification and destroys the edit control. The notification is sent to the parent of the list view control and not to the list view control itself. When sending the notification, the m_bESC member variable is used to determine whether to send a NULL string. The OnNcDestroy() function is the appropriate place to destroy the C++ object. The OnChar() function ends the edit if the Escape or the Enter key is pressed. It does this by setting focus to the list view control which force the OnKillFocus() of the edit control to be called. For any other character, the OnChar() function lets the base class function take care of it before it tries to determine if the control needs to be resized. The function first gets the extent of the new string using the proper font and then compares it to the current dimension of the edit control. If the string is too long to fit within the edit control, it resizes the edit control after checking the parent window ( the list view control ) to determine if there is space for the edit control to grow.
//#include "stdafx.h"
#include "InPlaceEdit.h"#ifdef _DEBUG
#define new DEBUG_NEW
#undef THIS_FILE
static char THIS_FILE[] = __FILE__;
#endif/////////////////////////////////////////////////////////////////////////////
// CInPlaceEditCInPlaceEdit::CInPlaceEdit(int iItem, int iSubItem, CString sInitText)
:m_sInitText( sInitText )
{
m_iItem = iItem;
m_iSubItem = iSubItem;
m_bESC = FALSE;
}CInPlaceEdit::~CInPlaceEdit()
{
}
BEGIN_MESSAGE_MAP(CInPlaceEdit, CEdit)
//{{AFX_MSG_MAP(CInPlaceEdit)
ON_WM_KILLFOCUS()
ON_WM_NCDESTROY()
ON_WM_CHAR()
ON_WM_CREATE()
//}}AFX_MSG_MAP
END_MESSAGE_MAP()/////////////////////////////////////////////////////////////////////////////
// CInPlaceEdit message handlersBOOL CInPlaceEdit::PreTranslateMessage(MSG* pMsg)
{
if( pMsg->message == WM_KEYDOWN )
{
if(pMsg->wParam == VK_RETURN
|| pMsg->wParam == VK_DELETE
|| pMsg->wParam == VK_ESCAPE
|| GetKeyState( VK_CONTROL)
)
{
::TranslateMessage(pMsg);
::DispatchMessage(pMsg);
return TRUE; // DO NOT process further
}
} return CEdit::PreTranslateMessage(pMsg);
}
void CInPlaceEdit::OnKillFocus(CWnd* pNewWnd)
{
CEdit::OnKillFocus(pNewWnd); CString str;
GetWindowText(str); // Send Notification to parent of ListView ctrl
LV_DISPINFO dispinfo;
dispinfo.hdr.hwndFrom = GetParent()->m_hWnd;
dispinfo.hdr.idFrom = GetDlgCtrlID();
dispinfo.hdr.code = LVN_ENDLABELEDIT; dispinfo.item.mask = LVIF_TEXT;
dispinfo.item.iItem = m_iItem;
dispinfo.item.iSubItem = m_iSubItem;
dispinfo.item.pszText = m_bESC ? NULL : LPTSTR((LPCTSTR)str);
dispinfo.item.cchTextMax = str.GetLength(); GetParent()->GetParent()->SendMessage( WM_NOTIFY, GetParent()->GetDlgCtrlID(),
(LPARAM)&dispinfo ); DestroyWindow();
}void CInPlaceEdit::OnNcDestroy()
{
CEdit::OnNcDestroy(); delete this;
}
void CInPlaceEdit::OnChar(UINT nChar, UINT nRepCnt, UINT nFlags)
{
if( nChar == VK_ESCAPE || nChar == VK_RETURN)
{
if( nChar == VK_ESCAPE )
m_bESC = TRUE;
GetParent()->SetFocus();
return;
}
CEdit::OnChar(nChar, nRepCnt, nFlags); // Resize edit control if needed // Get text extent
CString str; GetWindowText( str );
CWindowDC dc(this);
CFont *pFont = GetParent()->GetFont();
CFont *pFontDC = dc.SelectObject( pFont );
CSize size = dc.GetTextExtent( str );
dc.SelectObject( pFontDC );
size.cx += 5; // add some extra buffer // Get client rect
CRect rect, parentrect;
GetClientRect( &rect );
GetParent()->GetClientRect( &parentrect ); // Transform rect to parent coordinates
ClientToScreen( &rect );
GetParent()->ScreenToClient( &rect ); // Check whether control needs to be resized
// and whether there is space to grow
if( size.cx > rect.Width() )
{
if( size.cx + rect.left < parentrect.right )
rect.right = rect.left + size.cx;
else
rect.right = parentrect.right;
MoveWindow( &rect );
}
}int CInPlaceEdit::OnCreate(LPCREATESTRUCT lpCreateStruct)
{
if (CEdit::OnCreate(lpCreateStruct) == -1)
return -1; // Set the proper font
CFont* font = GetParent()->GetFont();
SetFont(font); SetWindowText( m_sInitText );
SetFocus();
SetSel( 0, -1 );
return 0;
}