🚀 go-pugleaf

"Jeff" <Jeff@nospam.com> wrote in message
news:4486fe87$1@newsgroups.borland.com...
> I've build a function that returns the handle to a window who's
caption
> starts with the String passed to it (see code below).  The problem I'm
> having is that when I call it a second time, say in a loop, it throws
an
> EAccessViolation.  Any thoughts?
>
> HWND TfrmMain::FindWindowLike(String strWinText)
> {
>  HWND hWindow; //Window handle
>  char *ptr_chrTitle = ""; //Window title
>

how much memory you think you have pointed by ptr_chrTitle?

>  hWindow = FindWindow(NULL, NULL);   //Start with the first window
>
>  do
>  {
>   SendMessage(hWindow, WM_GETTEXT, GetWindowTextLength(hWindow) + 1,
> (LPARAM)ptr_chrTitle); //Get the window's caption

make sure you don't exceed the memory size pointed by ptr_chrTitle.

>   if (static_cast<String>(ptr_chrTitle).Pos(strWinText) == 1)
//Matches!
> "Visual SourceSafe Explorer --..."
>    return hWindow; //Return the handle
>   else
>    hWindow = GetNextWindow(hWindow, GW_HWNDNEXT);  //Get the handle to
the
> next window
>  } while (hWindow != NULL);  //Search until we run out of windows
>
>  return hWindow; //Return the handle
> }
>
>