GetWindowText -> string?

This is a discussion on GetWindowText -> string? within the Windows Programming forums, part of the Platform Specific Boards category; Is there any way to use a STL string as a parameter to GetWindowText?...

  1. #1
    C++ Developer XSquared's Avatar
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    GetWindowText -> string?

    Is there any way to use a STL string as a parameter to GetWindowText?
    Naturally I didn't feel inspired enough to read all the links for you, since I already slaved away for long hours under a blistering sun pressing the search button after typing four whole words! - Quzah

    You. Fetch me my copy of the Wall Street Journal. You two, fight to the death - Stewie

  2. #2
    erstwhile
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    Perhaps, something like:
    Code:
    int txtlen=GetWindowTextLength(hwnd);
    std::string s;  //or use wstring for wchar_t
    s.reserve(txtlen+1);
    GetWindowText(hwnd,const_cast<char*>(s.c_str()), txtlen);
    might do it but I suspect that it may be considered 'evil' to even consider attempting something like this.

    So, I suppose, the realistic answer has to be: no.
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  3. #3
    Banned master5001's Avatar
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    Well ken that looks pretty evil to me. But one could make function that uses a temporary char buffer to get the message and then copy that buffer into the std::string.

    Code:
    int GetWindowString(HWND hwnd, std::string &s) {
      char buffer[65536];
    
      int txtlen=GetWindowTextLength(hwnd);
      GetWindowText(hwnd, buffer, txtlen);
    
      s = buffer;
      return textlen;
    }
    But I'm sure that XSquared has already done this.

  4. #4
    C++ Developer XSquared's Avatar
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    That's basically what I did. I was just wondering if there was a more 'elegant' way to do it.
    Naturally I didn't feel inspired enough to read all the links for you, since I already slaved away for long hours under a blistering sun pressing the search button after typing four whole words! - Quzah

    You. Fetch me my copy of the Wall Street Journal. You two, fight to the death - Stewie

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