Listview label editing

Hello, I'm trying to use the LVS_EDITLABELS style to allow label editing on all the rows of a listview control; the problem is that only works for the first column althought I click over another column (the edit box is placed always over the first column of the selected row).

I'm thinking on get the selected column by getting the mouse position over the listview and then create an edit control and place it over the selected column of the selected row to do an alternative label editing. Is that the way to do it? Or I'm missing something about the default listview label editing?

Thank's in advance
Niara

That's pretty much how you have to do it. You can hook the ListView's edit procedure on the LVN_BEGINLABELEDIT notification and move the editbox it automatically creates where you want it. Don't forget to enable FULLROWSELECT if going this route.

Here's a sample that may or may not be helpful.

(declare WNDPROC oldEditProcedure; globally)

Code:

---

                                            case LVN_BEGINLABELEDIT:
                                            {
                                                hEditBox = (HWND)SendDlgItemMessage(hwnd, LST_DATA, LVM_GETEDITCONTROL, 0, 0);
                            LV_ITEM lvItem = ( (NMLVDISPINFO*)lParam )->item;
                                                DWORD dwPos = GetMessagePos();
                                                POINT pLoc = { GET_X_LPARAM( dwPos ), GET_Y_LPARAM( dwPos ) };
                                                ScreenToClient( hwnd, &pLoc );

                                                LVHITTESTINFO        lvHit;
                                                lvHit.pt.x = pLoc.x;
                                                lvHit.pt.y = pLoc.y;
                                                lvHit.iItem = lvItem.iItem;
                                                SendDlgItemMessage(hwnd, LST_DATA, LVM_SUBITEMHITTEST, 0, (LPARAM)&lvHit);
                            lvEditRect.top = lvHit.iSubItem;
                            lvEditRect.left = LVIR_LABEL;
                            SendDlgItemMessage(hwnd, LST_DATA, LVM_GETSUBITEMRECT, lvItem.iItem, (LPARAM)&lvEditRect);
                            oldEditProcedure = (WNDPROC)GetWindowLongPtr (hEditBox, GWLP_WNDPROC);                       
                            SetWindowLongPtr (hEditBox, GWLP_WNDPROC, (LONG_PTR)newEditProcedure);
                            if (lvHit.iSubItem < 2) { //value/address
                                SendMessage(hEditBox, EM_SETLIMITTEXT, 8, 0);
                            }
                            lvItem.iSubItem = lvHit.iSubItem;
                            lvItem.pszText=txtInput;
                            lvItem.cchTextMax=sizeof(txtInput);
                            SendDlgItemMessage(hwnd, LST_DATA, LVM_GETITEMTEXT, lvItem.iItem, (LPARAM)&lvItem);
                            SetWindowText(hEditBox,lvItem.pszText);
                                                break;
                                            }

---

Code:

---

/********************************
Listview editbox handler
*********************************/
LRESULT CALLBACK newEditProcedure (HWND hwnd, UINT message, WPARAM wParam, LPARAM lParam)
{
//    char testchar[56];
 
switch (message)
{
    case WM_CHAR:
        {                           
            if ( (SendMessage(hwnd, EM_GETLIMITTEXT, 0, 0) == 8) &&  (FilterHexChar(wParam) == 0) ) {
                wParam = 0;
            }
            break;
        }
        case WM_WINDOWPOSCHANGING:
            {
                        WINDOWPOS* windowPos = (WINDOWPOS*)lParam;
                        windowPos->x = lvEditRect.left;
                        windowPos->y = lvEditRect.top - 2;
                        windowPos->cx = lvEditRect.right - lvEditRect.left;
                        return CallWindowProc (oldEditProcedure, hwnd, message, wParam, lParam);
          }

        default:

        if (oldEditProcedure) {
        return CallWindowProc (oldEditProcedure, hwnd, message, wParam, lParam);
        }
        else {
        return DefWindowProc (hwnd, message, wParam, lParam);
        }
}
        return CallWindowProc (oldEditProcedure, hwnd, message, wParam, lParam);
}

---

Hello Viper187, thank's for your time and the piece of code.
Let me take a deeper look intto it and I'll say something.

Thank's
Niara

Hi, that works great!!!

Only one thing:

Code:

---


//WM_NOTIFY->LVN_BEGINLABELEDIT rocessing:
if (lvHit.iSubItem<2)
    {//value/address
    SendMessage(hEditBox,EM_SETLIMITTEXT,8,0);
    }

//newEditProcedure proc
case WM_CHAR:
    {                           
    if((SendMessage(hwnd,EM_GETLIMITTEXT,0,0)==8) && (FilterHexChar(wParam)==0))
        {
        wParam=0;
        }
    }
break;

---

Is that necessary? I suppose thats a sample of how to restrict data entering to the edit box on certain columns, am I right?

Thank's
Niara

Quote:

---

Originally Posted by Niara

Hi, that works great!!!

Only one thing:

Code:

---


//WM_NOTIFY->LVN_BEGINLABELEDIT rocessing:
if (lvHit.iSubItem<2)
    {//value/address
    SendMessage(hEditBox,EM_SETLIMITTEXT,8,0);
    }

//newEditProcedure proc
case WM_CHAR:
    {                           
    if((SendMessage(hwnd,EM_GETLIMITTEXT,0,0)==8) && (FilterHexChar(wParam)==0))
        {
        wParam=0;
        }
    }
break;

---

Is that necessary? I suppose thats a sample of how to restrict data entering to the edit box on certain columns, am I right?

Thank's
Niara

---

Right. It's not necessary. I just restricted the user to typing hex characters in that column.

Ok, thank's. I can go on with the application now :)

Niara