Compile Error in Visual C++ 2005 express

[Fremontknight1]

Hi there;

I entered a simple C++ program from a book on video games, and I'm getting a compile error. You can see the compiler error message down below, along with the text of the program.

Does anyone know what the problem is? I should note that the author used MS Visual C++ 2003, whereas I'm using the 2005 Express edition, so I'm guessing there might be something different between the two versions. Also, I compiled this in Dev C++ and it worked fine. However, I'm trying to improve my Express skills, so I'd love to learn how to fix this.

Thanks,
FremontKnight

************************************************** ****
This is the code of the program:

 
//#define WIN32_LEAN_AND_MEAN

#include <windows.h>
//#include <windowsx.h>

int WINAPI WinMain(HINSTANCE hInstance, HINSTANCE hPrevInstance, 
	LPSTR lpCmdLine, int nShowCmd)
{
    MessageBox(NULL, "Motoko Kusanagi has hacked your system!",
        "Public Security Section 9", MB_OK | MB_ICONEXCLAMATION);

    return 0;

}

Here is the compiler feedback:
************************************************** **
------ Build started: Project: Chapter 2, Configuration: Debug Win32 ------
>Compiling...
>Chapter 2 Program.cpp
>c:\documents and settings\paul\my documents\visual studio 2005\projects\chapter 2\chapter 2\chapter 2 program.cpp(14) : error C2664: 'MessageBoxW' : cannot convert parameter 2 from 'const char [40]' to 'LPCWSTR'
> Types pointed to are unrelated; conversion requires reinterpret_cast, C-style cast or function-style cast
>Build log was saved at "file://c:\Documents and Settings\Paul\My Documents\Visual Studio 2005\Projects\Chapter 2\Chapter 2\Debug\BuildLog.htm"
>Chapter 2 - 1 error(s), 0 warning(s)
========== Build: 0 succeeded, 1 failed, 0 up-to-date, 0 skipped ==========

[Salem]

You're compiling with UNICODE enabled.

Each "string" in your program should be written as TEXT("string")

[mikeman118]

Another way to fix this is to press Alt F7, which brings up a box. Then go to Configuration Properties -> General, and the third box from the bottom (Character Set), change that from 'Use Unicode Character Set' which is the default to 'Use Multi-Byte Character Set'. That should fix it so you don't have any of those errors, although you have to do that for each project.

[Fremontknight1]

Thanks for the suggestions, Salem & mikeman118.
When do either of these, I get a new error. Your thoughts?

Thank you!

#include <windows.h>

int WINAPI WinMain(HINSTANCE hInstance, HINSTANCE hPrevInstance, 
	LPSTR lpCmdLine, int nShowCmd)
{
    MessageBox(NULL, TEXT("Motoko Kusanagi has hacked your system!"),
        TEXT("Public Security Section 9"), MB_OK | MB_ICONEXCLAMATION);
    return 0;
}

***************************************
Compiling...
1>Chap2 Code.cpp
1>Linking...
1>Chap2 Code.obj : error LNK2019: unresolved external symbol __imp__MessageBoxW@16 referenced in function _WinMain@16
1>C:\Documents and Settings\Paul\My Documents\Visual Studio 2005\Projects\Chapter 2 Program\Debug\Chapter 2 Program.exe : fatal error LNK1120: 1 unresolved externals
1>Build log was saved at "file://c:\Documents and Settings\Paul\My Documents\Visual Studio 2005\Projects\Chapter 2 Program\Chapter 2 Program\Debug\BuildLog.htm"
1>Chapter 2 Program - 2 error(s), 0 warning(s)
========== Build: 0 succeeded, 1 failed, 0 up-to-date, 0 skipped ==========

[robwhit]

are you building a console or graphical application?

[Fremontknight1]

It's supposed to be a pop-up warning box, so I guess you would call it a graphical application.

[Daved]

I think robwhit meant what typeof project did you create? There are different types when you create a VC++ project.

The error suggests you aren't linking to the library that has the MessageBox implementation. I would think a Windows Application project would automatically link to that, but maybe not.

[Fremontknight1]

I selected Win32 Console Application as the project template. As options, I chose Windows as an application type, and selected empty project.

[tjpanda]

I think for WinMain you need to select a Win32 Application not a Win32 Console Application.

To make that code work as is in your project you'd probably have to do:

#include <windows.h>

int main()
{
    MessageBox(NULL, TEXT("Motoko Kusanagi has hacked your system!"),
        TEXT("Public Security Section 9"), MB_OK | MB_ICONEXCLAMATION);
    return 0;
}

[hk_mp5kpdw]

SDK?