MessageBox Problem

This is a discussion on MessageBox Problem within the Windows Programming forums, part of the Platform Specific Boards category; Greetings People have question here.Is there any way that I can out put a value (which is stored in a ...

  1. #1
    Just a Human Anuradh_a's Avatar
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    MessageBox Problem

    Greetings People
    have question here.Is there any way that I can out put a value (which is stored in a variable )
    using MessageBox() .
    thanks.

  2. #2
    C++まいる!Cをこわせ! Elysia's Avatar
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    Can you pass variables TO MessageBox, you mean? If that's the question, then yes.
    Quote Originally Posted by Adak View Post
    io.h certainly IS included in some modern compilers. It is no longer part of the standard for C, but it is nevertheless, included in the very latest Pelles C versions.
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    You mean it's included as a crutch to help ancient programmers limp along without them having to relearn too much.

    Outside of your DOS world, your header file is meaningless.
    For information on how to enable C++11 on your compiler, look here.
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  3. #3
    Just a Human Anuradh_a's Avatar
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    then how do I do it????

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    Registered /usr
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    I would think you would need to wsprintf() to a temporary string first then pass that to MessageBox().

    Of course, that only applies to primitive variable types (int, long, double, etc.). If you've got a fancy-pants C++ class member that you want to work with then you'll probably need to convert it first.

  5. #5
    Just a Human Anuradh_a's Avatar
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    is there any examples on this SMurf???
    thanks

  6. #6
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    It depends on which language you want to do it in. As I normally use C:-
    Code:
    char szTemp[16]; // this must accomodate AT LEAST the maximum string length of what you want to display PLUS an extra character for null termination
    int iValue = 123456789; // the value that you want to display
    
    wsprintf(szTemp, "%i", iValue);
    MessageBox(NULL, szTemp, NULL, MB_ICONINFORMATION);

  7. #7
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    If you have to do this conversion more than once, you might want to use Prelude's stringstream example from the FAQ Section.

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