Tips for using clistctrl listcontrol in VC ++

1. Set the listctrl style and extended Style
Clistctrl style:
Lvs_icon: displays a large icon for each item
Lvs_smallicon: displays small icons for each item
Lvs_list: displays a column of items with small icons
Lvs_report: displays item details
Set style:
Long lstyle;
Lstyle | = lvs_report; // set the style
Setwindowlong (m_list.m_hwnd, gwl_style, lstyle); // set the style
Obtain style:
Lstyle = getwindowlong (m_list.m_hwnd, gwl_style); // get the style of the current window
Lstyle & = ~ Lvs_typemask; // clear the display mode bit
Extended style:
Lvs_ex_fullrowselect; // select an exercise to highlight the entire line (only applicable to listctrl in the report style)
Lvs_ex_gridlines; // gridlines (only applicable to listctrl in the report style)
Lvs_ex_checkboxes; // the checkbox control is generated before the item.
Set the extended style:
M_list.setextendedstyle (lvs_ex_fullrowselect | lvs_ex_gridlines | lvs_ex_checkboxes); // set the extended Style

2. Insert data
M_list.insertcolumn (0, "ID", lvcfmt_left, 40); // insert a column
M_list.insertcolumn (1, "name", lvcfmt_left, 50 );
Int nrow = m_list.insertitem (0, "11"); // insert a row
M_list.setitemtext (nrow, 1, "Jacky"); // set the data

3. Select and cancel the selected row
Int nindex = 0;
// Select
M_list.setitemstate (nindex, lvis_selected | lvis_focused, lvis_selected | lvis_focused );
// Deselect
M_list.setitemstate (nindex, 0, lvis_selected | lvis_focused );

4. Get the checkbox status of all rows in listctrl.
M_list.setextendedstyle (lvs_ex_checkboxes );
Cstring STR;
For (INT I = 0; I <m_list.getitemcount (); I ++)
{
If (m_list.getitemstate (I, lvis_selected) = lvis_selected | m_list.getcheck (I ))
{
Str. Format (_ T ("the checkbox of row % d is selected"), I );
Afxmessagebox (STR );
}
}

5. Obtain the serial numbers of all selected rows in listctrl.

Method 1:
Cstring STR;
For (INT I = 0; I <m_list.getitemcount (); I ++)
{
If (m_list.getitemstate (I, lvis_selected) = lvis_selected)
{
Str. Format (_ T ("row % d selected"), I );
Afxmessagebox (STR );
}
}

Method 2:
Position Pos = m_list.getfirstselecteditemposition ();
If (Pos = NULL)
Trace0 ("no items were selected! \ N ");
Else
{
While (POS)
{
Int nitem = m_list.getnextselecteditem (POS );
Trace1 ("item % d was selected! \ N ", nitem );
// You cocould do your own processing on nitem here
}
}

6. Obtain the item information.
Tchar szbuf [1024];
Lvitem LVI;
LVI. iItem = nitemindex;
LVI. isubitem = 0;
LVI. Mask = lvif_text;
LVI. psztext = szbuf;
LVI. cchtextmax = 1024;
M_list.getitem (& LVI );

7. Get the header string content of all columns of listctrl.
Lvcolumn lvcol;
Char STR [256];
Int ncolnum;
Cstring strcolumnname [4]; // if there are 4 columns

Ncolnum = 0;
Lvcol. Mask = lvcf_text;
Lvcol. psztext = STR;
Lvcol. cchtextmax = 256;
While (m_list.getcolumn (ncolnum, & lvcol ))
{
Strcolumnname [ncolnum] = lvcol. psztext;
Ncolnum ++;
}

8. Delete all columns
Method 1:
While (m_list.deletecolumn (0 ))
Because after you delete the first column, the columns that follow it will move up sequentially.

Method 2:
Int ncolumns = 4;
For (INT I = nColumns-1; I> = 0; I --)
M_list.deletecolumn (I );

9. Get the row and column number of the clicked listctrl
Add the nm_click message function of the listctrl control.
Void ctest6dlg: onclicklist1 (nmhdr * pnmhdr, lresult * presult)
{
// Method 1:
/*
DWORD dwpos = getmessagepos ();
Cpoint point (loword (dwpos), hiword (dwpos ));

M_list.screentoclient (& Point );

Lvhittestinfo lvinfo;
Lvinfo.pt = point;
Lvinfo. Flags = lvht_abve;

Int nitem = m_list.subitemhittest (& lvinfo );
If (nitem! =-1)
{
Cstring strtemp;
Strtemp. Format ("Click column % d of row % d", lvinfo. iItem, lvinfo. isubitem );
Afxmessagebox (strtemp );
}
*/

// Method 2:
/*
Nm_listview * pnmlistview = (nm_listview *) pnmhdr;
If (pnmlistview-> iItem! =-1)
{
Cstring strtemp;
Strtemp. Format ("Click column % d of row % d ",
Pnmlistview-> iItem, pnmlistview-> isubitem );
Afxmessagebox (strtemp );
}
*/
* Presult = 0;
}

10. Determine whether to click on the checkbox of listctrl.
Add the nm_click message function of the listctrl control.
Void ctest6dlg: onclicklist1 (nmhdr * pnmhdr, lresult * presult)
{
DWORD dwpos = getmessagepos ();
Cpoint point (loword (dwpos), hiword (dwpos ));

M_list.screentoclient (& Point );

Lvhittestinfo lvinfo;
Lvinfo.pt = point;
Lvinfo. Flags = lvht_abve;

Uint nflag;
Int nitem = m_list.hittest (point, & nflag );
// Determine whether the point is in the checkbox
If (nflag = lvht_onitemstateicon)
{
Afxmessagebox ("point in the checkbox of listctrl ");
}
* Presult = 0;
}