Usage of insertitem and settitemtext functions in the clistctrl Control

When I first used the clistctrl control, I was not very familiar with the functions of insertitem and setrtitemtext. For example, if I didn't call the insertitem function first, I wrote the insertitemtext function later, does not work either. I checked msdn, and I didn't get any results. After some clicks, I suddenly realized. let's talk about the experience today, hoping that there will be less detours for common fans.

The function prototype of insertitem in msdn is as follows:
Int

Insertitem (
Const
Lvitem *

Pitem
);

Int insertitem (int

Nitem
, Lpctstr
Lpszitem

);

Int insertitem (int

Nitem
, Lpctstr
Lpszitem
,
Int
Nimage
);

Int
Insertitem (uint
Nmask
, Int

Nitem
, Lpctstr
Lpszitem
,
Uint
Nstate
, Uint

Nstatemask
, Int
Nimage
,
Lparam
Lparam
);


Generally, we use 2nd and the third types of items with a header.

To call the third object, you can declare a cimagelist object first.
M_imagelist.create (16, 16, true, 2, 2 );
M_imagelist.add (theapp. loadicon (idr_mainframe ));
M_listctrl.setimagelist (& m_imagelist, lvsil_small );
In this way, each row in the control has an application icon at the beginning.

Now let's take a look at the meaning of each insertitem parameter.
Nitem: the row index of the control.

Lpszitem
:
Control header name

........................................ ........................................ ........................................ ........................................ .........................................

Prototype of settitemtext Function
Bool
Setitemtext (

Int
Nitem
,
Int

Nsubitem
,
Lptstr
Lpsztext

);
* ****************** Pay attention to the parameters in this function
Nitem is nitem in insertitem,

That is to say, insertitem requests a row of data to the control sound. Remember that only the sound is called, then the work of Party data is implemented by setitemtext.
Example:

Clistctrl m_listctrl;

M_listctrl = new clistctrl ();

M_listctrl.creae (ws_child | ws_visible | ws_border | lvs_report | lvs_editlabels
, Bigrect, this, idc_list1

);

M_listctrl.insertitem (0, "01 ");

M_setitemtext (0, 1, "1 ");

M_setitemtext (0, 2, "2 ");
'''''''''''''''''''''''''''''''''''''''' ''''''''''''''''''''''''''''

As to how much data is to be added, it is up to the number of columns of your control.

Obtain the int columns =
M_listctr.getheaderctrl ()-> getitemcount ();

Obtain the int rows =
M_listctrl.getitemcount ();


The following is an example of my learning.
//
Dataview. cpp: Implementation of the cdataview class
//

# Include "stdafx. H"
# Include "data. H"

# Include "datadoc. H"
# Include "dataview. H"
# Include
"Editdlg. H"
# Ifdef _ debug
# Define new debug_new
# UNDEF
This_file
Static char this_file [] = _ file __;
# Endif

//////////////////////////////////////// /////////////////////////////////////
//
Cdataview

Implement_dyncreate (cdataview, cview)

Begin_message_map (cdataview,
Cview)
// {Afx_msg_map (cdataview)
On_command (idm_user,
Onuser)
On_command (idm_up, onup)
On_command (idm_down,
Ondown)
On_command (idm_edit, onedit)
On_command (idm_add,
Onadd)
On_command (idm_delete, ondelete)
On_command (idm_save,
Onsave)
//} Afx_msg_map
// Standard printing
Commands
On_command (id_file_print,
Cview: onfileprint)
On_command (id_file_print_direct,
Cview: onfileprint)
On_command (id_file_print_preview,
Cview: onfileprintpreview)
On_policy (nm_click, idc_list1,
Onclicklist1)
On_policy (nm_dblclk, idc_list1,
Ondblclklist1)
On_policy (nm_killfocus, idc_list1,
Onkillfocuslist1)
End_message_map ()

//////////////////////////////////////// /////////////////////////////////////
//
Cdataview construction/destruction

Cdataview: cdataview ()
{
// Todo: Add construction code here

M_nindex =-1;
}

Cdataview ::~ Cdataview ()
{
}

Bool cdataview: precreatewindow (createstruct & CS)
{
// Todo:
Modify the window class or styles here by modifying
// The createstruct
CS

Return cview: precreatewindow (CS );
}

//////////////////////////////////////// /////////////////////////////////////
//
Cdataview drawing

Void cdataview: ondraw (CDC * PDC)
{
Cdatadoc * pdoc =
Getdocument ();
Assert_valid (pdoc );
// Todo: Add draw code for native
Data here
}

//////////////////////////////////////// /////////////////////////////////////
//
Cdataview Printing

Bool cdataview: onprepareprinting (cprintinfo * pinfo)
{
// Default
Preparation
Return doprepareprinting (pinfo );
}

Void cdataview: onbeginprinting (CDC */* PDC */, cprintinfo *
/* Pinfo */)
{
// Todo: add extra initialization before printing
}

Void cdataview: onendprinting (CDC */* PDC */, cprintinfo *
/* Pinfo */)
{
// Todo: Add cleanup after printing
}

//////////////////////////////////////// /////////////////////////////////////
//
Cdataview diagnostics

# Ifdef _ debug
Void cdataview: assertvalid ()
Const
{
Cview: assertvalid ();
}

Void cdataview: dump (cdumpcontext & DC)
Const
{
Cview: dump (DC );
}

Cdatadoc * cdataview: getdocument () // non-debug version is
Inline
{
Assert (m_pdocument-> iskindof (runtime_class (cdatadoc )));
Return
(Cdatadoc *) m_pdocument;
}
# Endif // _ debug

//////////////////////////////////////// /////////////////////////////////////
//
Cdataview message handlers

Void cdataview: oninitialupdate ()

{
Cview: oninitialupdate ();
 
// Todo: add your specialized code
Here and/or call the base class
CDC * Dc = getdc ();
Crect
Rect;
This-> getclientrect (& rect );
Cstring STR =
"Load database resources to the list ";
Csize SZ = Dc-> gettextextent (STR );
Rect. Right =
SZ. CX;
Rect. Bottom = Sz. Cy;
Cstatic * State = new
Cstatic;
State-> Create (STR, ws_child, rect, this );

State-> showwindow (sw_show );

This-> releasedc (DC );
 
Initlistctrl (rect );
M_imagelist.create (16, 16, true, 2, 2 );
M_imagelist.add (theapp. loadicon (idr_mainframe ));
 
}

Void cdataview: initlistctrl (crect rect)
{
Crect
Bigrect;
This-> getclientrect (& bigrect );
Bigrect. Top =
Rect. bottom;
M_listctrl.create (ws_child | ws_visible | ws_border | lvs_report | lvs_editlabels
, Bigrect, this, idc_list1 );
// M_listctrl.insert (0, "username ");
// M_listctrl.insertitem (1, "password ");
Cfont
* M_pfont = new cfont ();
M_pfont-> createfont (20 ,//
Nheight
0, // nwidth

0, // nescapement
0 ,//
Norientation
Fw_normal, // nweight

False, // bitalic
False ,//
Bunderline
0, // cstrikeout

Default_charset, // ncharset
Out_default_precis ,//
Noutprecision
Clip_default_precis, // nclipprecision

Default_quality, // nquality
Default_pitch | ff_swiss ,//
Npitchandfamily
"Arial ");
M_listctrl.setfont (m_pfont );

M_listctrl.setimagelist (& m_imagelist, lvsil_small );
M_listctrl.setextendedstyle (lvs_ex_fullrowselect | lvs_ex_gridlines );
M_listctrl.setbkcolor (RGB (247,247,255 ));

M_listctrl.settextcolor (RGB (0, 0, 255 ));

M_listctrl.settextbkcolor (RGB (247,247,255 ));
M_listctrl.insertcolumn (0, "ID", lvcfmt_left, 100,-1 );
M_listctrl.insertcolumn (1, "username", lvcfmt_left, 100,-1 );
M_listctrl.insertcolumn (2, "password", lvcfmt_left, 200,-1 );

M_listctrl.insertitem (0, "01 ");
M_listctrl.setitemtext (0, 1, "chetnao ");
M_listctrl.setitemtext (0, 2, "921984 ");

M_listctrl.insertitem (1, "02 ");
M_listctrl.setitemtext (1, 1, "Mada ");
M_listctrl.setitemtext (345678 ");

M_listctrl.insertitem (2, "03 ");
M_listctrl.setitemtext (2, 1, "luoxian ");
M_listctrl.setitemtext (2, 2, "987654 ");
}

Extern cdataapp theapp;
Void cdataview: onuser ()
{
// Todo: add
Your command handler code here
_ Recordsetptr
M_precordset;
Try
{
M_precordset =
Theapp. m_pconnection-> execute ("select * from
User12 ", null, ad1_text );
}
Catch (_ com_error
E)
{
Afxmessagebox (E. errormessage ());
Afxmessagebox (E. Description ());
Cstring
STR;
Str. Format ("% lD", E. Error );
Afxmessagebox (STR );
Return;
}
If (m_precordset-> BOF)
{
MessageBox ("no records in the table ");
Return;
}
Else
{
Int
Len =
M_listctrl.getheaderctrl ()-> getitemcount ();
While (! M_precordset-> adoeof)
{

M_listctrl.insertitem (2, (_ bstr_t) m_precordset-> getcollect ("ID "));

M_listctrl.insertitem (1, (_ bstr_t) m_precordset-> getcollect ("username "));

M_listctrl.insertitem (0, (_ bstr_t) m_precordset-> getcollect ("password "));
/* For (int
I = 0; I <Len; I ++)
{
M_listctrl.setitemtext (I, 0, (_ bstr_t) m_precordset-> getcollect ("ID "));
M_listctrl.setitemtext (I, 1, (_ bstr_t) m_precordset-> getcollect ("username "));
M_listctrl.setitemtext (I, 2, (_ bstr_t) m_precordset-> getcollect ("password "));
}*/

M_precordset-> movenext ();
}
}
}
Void
Cdataview: onclicklist1 (nmhdr * pnmhdr, lresult * presult)
{
Position Pos =
M_listctrl.getfirstselecteditemposition ();
M_nindex =
M_listctrl.getnextselecteditem (POS );

}
Void cdataview: ondblclklist1 (nmhdr * pnmhdr, lresult *
Presult)
{
Position Pos =
M_listctrl.getfirstselecteditemposition ();
M_nindex =
M_listctrl.getnextselecteditem (POS );
Ceditdlg DLG;
DLG. m_strno =
M_listctrl.getitemtext (m_nindex, 0 );
DLG. m_strname =
M_listctrl.getitemtext (m_nindex, 1 );
DLG. m_strpassword =
M_listctrl.getitemtext (m_nindex, 2 );

If (idok =
DLG. domodal ())
{
M_listctrl.setitemtext (m_nindex, 0, DLG. m_strno );

M_listctrl.setitemtext (m_nindex, 1, DLG. m_strname );
M_listctrl.setitemtext (m_nindex, 2, DLG. m_strpassword );
}
* Presult
= 0;

}

Void cdataview: onup ()
{
// Todo: add your command handler code
Here
M_listctrl.setfocus ();
If (m_nindex =
-1)
{
MessageBox ("select a row! ");
Return;
}
If (m_nindex =
0)
{
MessageBox ("the line you selected is the top line! ");
Return;
}
Cstring
Strno, strname, strpassword;
Strno =
M_listctrl.getitemtext (m_nindex, 0 );
Strname =
M_listctrl.getitemtext (m_nindex, 1 );
Strpassword =
M_listctrl.getitemtext (m_nindex, 2 );

M_listctrl.deleteitem (m_nindex );
M_listctrl.insertitem (m_nIndex-1, strno );
M_listctrl.setitemtext (m_nIndex-1, 1, strname );

M_listctrl.setitemtext (m_nIndex-1, 2, strpassword );

M_nindex --;
M_listctrl.setitemstate (m_nindex, lvis_focused | lvis_selected, lvis_focused | lvis_selected );

}
Void cdataview: onkillfocuslist1 (nmhdr * pnmhdr, lresult *
Presult)
{
M_nindex =-1;
}
Void cdataview: ondown ()
{
//
Todo: add your command handler code here
M_listctrl.setfocus ();

If (m_nindex =-1)
{
MessageBox ("select a row! ");
Return
;
}
If (m_nindex =
M_listctrl.getitemcount ()-1)
{
MessageBox ("this is the last line! ");
Return
;
}
Cstring strno, strname, strpassword;
Strno =
M_listctrl.getitemtext (m_nindex, 0 );
Strname =
M_listctrl.getitemtext (m_nindex, 1 );
Strpassword =
M_listctrl.getitemtext (m_nindex, 2 );

M_listctrl.deleteitem (m_nindex );
M_listctrl.insertitem (m_nindex + 1, strno );
M_listctrl.setitemtext (m_nindex + 1, 1, strname );

M_listctrl.setitemtext (m_nindex + 1, 2, strpassword );
M_nindex ++;

M_listctrl.setitemstate (m_nindex, lvis_focused | lvis_selected, lvis_focused | lvis_selected );
}

Void cdataview: onedit ()
{
// Todo: add your command handler code
Here
Position Pos = m_listctrl.getfirstselecteditemposition ();

M_nindex = m_listctrl.getnextselecteditem (POS );
If (m_nindex =
-1)
{
MessageBox ("select a row! ");
Return;
}
Ceditdlg
DLG;
DLG. m_strno = m_listctrl.getitemtext (m_nindex, 0 );
DLG. m_strname =
M_listctrl.getitemtext (m_nindex, 1 );
DLG. m_strpassword =
M_listctrl.getitemtext (m_nindex, 2 );

If (idok =
DLG. domodal ())
{
M_listctrl.setredraw (false );
M_listctrl.deleteitem (m_nindex );

M_listctrl.insertitem (m_nindex, DLG. m_strno );

M_listctrl.setitemtext (m_nindex, 1, DLG. m_strname );
M_listctrl.setitemtext (m_nindex, 2, DLG. m_strpassword );
M_listctrl.setredraw (true );
}
}

Void cdataview: onadd ()
{
// Todo: add your command handler code
Here
Ceditdlg DLG;
If (DLG. domodal () = idok)
{
Int
Count = m_listctrl.insertitem (m_listctrl.getitemcount (), DLG. m_strno );
M_listctrl.setitemtext (count, 1, DLG. m_strname );

M_listctrl.setitemtext (count, 2, DLG. m_strpassword );
}
}

Void cdataview: ondelete ()
{
// Todo: add your command handler code
Here
If (m_nindex =-1)
{
MessageBox ("select a row! ");
Return
;
}
M_listctrl.deleteitem (m_nindex );
Uint flag =
Lvis_selected | lvis_focused;
M_listctrl.setitemstate (m_nIndex-1, flag,
Flag );
}

Void cdataview: onsave ()
{
// Todo: add your command handler code
Here
Cfile
F;
If (F. Open ("save.txt", cfile: modecreate | cfile: modewrite, null ))
{
Cstring
STR = "ID/T/tusername/T/tpassword/R/N ";
F. Write (STR, strlen (STR) + 1 );
For (int
I = 0; I <m_listctrl.getitemcount (); I ++)
{
STR = m_listctrl.getitemtext (I, 0) + "/T" + m_listctrl.getitemtext (I, 1) +
"/T" + m_listctrl.getitemtext (I, 2) + "/R/N ";

F. Write (STR, strlen (STR) + 1 );
}
F. Close ();
MessageBox ("saved successfully! ");
}
Else
{
MessageBox ("Saving failed! ");
}
 
}