Introduction to Windows Programming (8)-Use of The ListBox control in MFC

Link: http://www.cnblogs.com/zuollblog/archive/2010/04/21/1716940.html

1. 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
Intuitive understanding: Windows resource manager, "View" under the tab "Big icon, small icon, list, details
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2. Set the listctrl style and extended Style
Long lstyle;
Lstyle = getwindowlong (m_list.m_hwnd, gwl_style); // get the style of the current window
Lstyle & = ~ Lvs_typemask; // clear the display mode bit
Lstyle | = lvs_report; // set the style
Setwindowlong (m_list.m_hwnd, gwl_style, lstyle); // set the style
DWORD dwstyle = m_list.getextendedstyle ();
Dwstyle | = lvs_ex_fullrowselect; // select an exercise to highlight the entire line (only applicable to listctrl in the report style)
Dwstyle | = lvs_ex_gridlines; // gridline (only applicable to listctrl with report style)
Dwstyle | = lvs_ex_checkboxes; // the checkbox control is generated before the item.
M_list.setextendedstyle (dwstyle); // you can specify the extended style.
NOTE: For the listview style, refer to msdn
Http://msdn.microsoft.com/library/default.asp? Url =/library/en-US/wceshellui5/html/wce50lrflistviewstyles. asp
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3. insert data
M_list.insertcolumn (0, "ID", lvcfmt_left, 40); // insert a column
M_list.insertcolumn (1, "name", lvcfmt_left, 50 );

// Newly inserted
Int nrow = m_list.insertitem (0, "11"); // insert a row
M_list.setitemtext (nrow, 1, "Jacky"); // you can specify other columns.

// The newly inserted data is shown below

Int nindex = m_list.getitemcount ();
Lv_item lvitem;
Lvitem. Mask = lvif_text;
Lvitem. iItem = nindex; // number of rows
Lvitem. isubitem = 0;
Lvitem. psztext = (char *) (lpctstr) strcount; // The first column
// Insert the record value in the last row.
M_list.insertitem (& lvitem );
// Insert other columns
M_list.setitemtext (nindex, 1, strlat );
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4. Always select item
Select Show selection always in the style, or set lvs_showselalways in the above 2nd
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5. 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 );
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6. 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 );
}
}
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7. 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
}
}
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8. 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 );
For more information about how to set the item status, see the msdn article.
Q173242: use masks to set/get item states in clistctrl
Http://support.microsoft.com/kb/173242/en-us
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9. 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 ++;
}
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10. Make one of listctrl visible, that is, scroll the scroll bar.
M_list.ensurevisible (I, false );
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11. Obtain the number of columns in listctrl.
Int nheadnum = m_list.getheaderctrl ()-> getitemcount ();
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12. 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 );
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13. 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;
}
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14. 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;
}
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15. Right-click the item pop-up menu of listctrl.
Add the nm_rclick message function of the listctrl control.
Void ctest6dlg: onrclicklist1 (nmhdr * pnmhdr, lresult * presult)
{
Nm_listview * pnmlistview = (nm_listview *) pnmhdr;
If (pnmlistview-> iItem! =-1)
{
DWORD dwpos = getmessagepos ();
Cpoint point (loword (dwpos), hiword (dwpos ));
Cmenu menu;
Verify (menu. loadmenu (idr_menu1 ));
Cmenu * popup = menu. getsubmenu (0 );
Assert (popup! = NULL );
Popup-> trackpopupmenu (tpm_leftalign | tpm_rightbutton, point. X, point. Y, this );
}
* Presult = 0;
}

16. The changing order of status when item focus is switched (including when item focus is switched with keyboard or mouse)
Add the lvn_itemchanged message function of the listctrl control.
Void ctest6dlg: onitemchangedlist1 (nmhdr * pnmhdr, lresult * presult)
{
Nm_listview * pnmlistview = (nm_listview *) pnmhdr;
// Todo: add your control notification handler code here
Cstring stemp;
If (pnmlistview-> uoldstate & lvis_focused) = lvis_focused & (pnmlistview-> unewstate & lvis_focused) = 0)
{
Stemp. Format ("% d losted Focus", pnmlistview-> iItem );
}
Else if (pnmlistview-> uoldstate & lvis_focused) = 0 &&
(Pnmlistview-> unewstate & lvis_focused) = lvis_focused)
{
Stemp. Format ("% d got focus", pnmlistview-> iItem );
}
If (pnmlistview-> uoldstate & lvis_selected) = lvis_selected &&
(Pnmlistview-> unewstate & lvis_selected) = 0)
{
Stemp. Format ("% d losted selected", pnmlistview-> iItem );
}
Else if (pnmlistview-> uoldstate & lvis_selected) = 0 & (pnmlistview-> unewstate & lvis_selected) = lvis_selected)
{
Stemp. Format ("% d got selected", pnmlistview-> iItem );
}
* Presult = 0;
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17. Get the item content of the listctrl control in another process.
Http://www.codeproject.com/threads/int64_memsteal.asp

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18. Select the item in listview.
Q131284: How to Select a listview item programmatically
Http://support.microsoft.com/kb/131284/en-us

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19. How to Use the derived class of clistctrl in clistview
Http://www.codeguru.com/cpp/controls/listview/introduction/article.php/c919/

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20. Add the subitem icon of listctrl
M_list.setextendedstyle (lvs_ex_subitemimages );
M_list.setitem (...); // For detailed parameters, see msdn