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Windows Programming

This is a discussion on Windows Programming within the C++ Programming forums, part of the General Programming Boards category; I only have one error in my code and I dont know why it is wrong! (I have not run ...

  1. #1
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    Dec 2012
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    6

    Question Windows Programming

    I only have one error in my code and I dont know why it is wrong!
    (I have not run the code, but the part that is underlined in red sais:
    A value of type "long" cannot be used to initialize an entitity of type "HWND")
    All i am trying to do is create a window.

    Here is the part with the error. Its where I create a window.

    Code:
    HWND WINAPI CreateWindowEx(
            WS_EX_CLIENTEDGE,
            g_szClassName,
            "The title of my window",
            WS_OVERLAPPEDWINDOW,
            CW_USEDEFAULT, CW_USEDEFAULT, 240, 120,
            NULL, NULL, hInstance, NULL);
    
    
        if(hwnd == NULL)
        {
            MessageBox(NULL, "Window Creation Failed!", "Error!",
                MB_ICONEXCLAMATION | MB_OK);
            return 0;
        }
    
    
        ShowWindow(hwnd, nCmdShow);
        UpdateWindow(hwnd);
    How do I fix this?
    Last edited by Hazique35; 12-30-2012 at 08:48 AM.

  2. #2
    Registered User
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    Dec 2012
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    SORRY! I fixed the problem.

  3. #3
    Cat without Hat CornedBee's Avatar
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    8,893
    The HWND WINAPI part is from the declaration of CreateWindowEx. Why did you put it in the call? It should be something like:
    Code:
    HWND hwnd = CreateWindowEx(...)
    For future reference, we have a forum specific to Windows programming. Use it. (I didn't move this thread because it's not really about Windows programming, and more about function usage.)
    Also, it would be helpful if you pointed out exactly which line is underlined.
    All the buzzt!
    CornedBee

    "There is not now, nor has there ever been, nor will there ever be, any programming language in which it is the least bit difficult to write bad code."
    - Flon's Law

  4. #4
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    Ya, I did that just before you posted.

    Anyway, sorry about posting here, I didnt see the other forum. Ill use it next time.

  5. #5
    C++まいる!Cをこわせ!
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    Is there a reason you are using the Win32 API instead of, say, Qt?
    Elkvis likes this.
    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.
    Quote Originally Posted by Salem View Post
    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.

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