How do i Buffer? (LB_GETTEXT)

I have no clue how to STRING BUFFER for lets say a LB_GETTEXT, SendMessage API Read Below:

Can someone tell me whats wrong with this:

Code:

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        case ID_GETLIST:
                                {
                                        char *ListSel;
                                        PSTR ListStr;
                                        int x;

                                        x = SendMessage(list,LB_GETTEXTLEN,0,0);

                                        ListStr = (PSTR) VirtualAlloc((LPVOID) NULL,
                    (DWORD) (x + 1), MEM_COMMIT,
                    PAGE_READWRITE);

                                        SendMessage(list,LB_GETTEXT,0,ListStr);
                                        //GetWindowText(edit, ListStr,x + 1);
                                        ListSel = ListStr;
                                        SetWindowText(edit,ListSel);

                                }

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i get this error but im not sure how to use a nuffer i hjust Copyed it and Pasted it
and then edited it. Is it correct?
Error

Code:

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--------------------Configuration: Win32Controls - Win32 Debug--------------------
Compiling resources...
Compiling...
WinMain.cpp
E:\Files\w32sk\WinMain.cpp(159) : error C2664: 'SendMessageA' : cannot convert parameter 4 from 'char *' to 'long'
        This conversion requires a reinterpret_cast, a C-style cast or function-style cast
Error executing cl.exe.

Win32Controls.exe - 1 error(s), 0 warning(s)

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As far as I can tell there is nothing wrong with this code. You need to use a cast:

Code:

---

SendMessage(list,LB_GETTEXT,0,(LPARAM)ListStr);

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Also, don't forget to free the memory you allocated for the string. Use VirtualFree (since you used VirtualAlloc to allocate it)

Use HeapAlloc or new for such small amounts of memory, VirtualAlloc is meant for 16k and up.

I'm saying it again, you'd be better off with console.