Hi, my name's Daggio and I'm new here
nice to meet you

I just follow a tutorial at http://www.cprogramming.com/tutorial...ogramming.html

and encountered an error like this:

1>c:\documents and settings\yadhiek\my documents\visual studio 2008\projects\cpopengl\cpopengl\belajar.cpp(5) : error C2664: 'MessageBoxW' : cannot convert parameter 2 from 'const char [14]' to 'LPCWSTR'
1> Types pointed to are unrelated; conversion requires reinterpret_cast, C-style cast or function-style cast
1>Build log was saved at "file://c:\Documents and Settings\Yadhiek\My Documents\Visual Studio 2008\Projects\CPOpenGL\CPOpenGL\Debug\BuildLog.htm "
1>CPOpenGL - 1 error(s), 0 warning(s)
========== Build: 0 succeeded, 1 failed, 0 up-to-date, 0 skipped ==========

and this is my code

Code:
#include <windows.h>

int APIENTRY WinMain(HINSTANCE hInstance,HINSTANCE hPrevInstance,LPSTR lpCmdLine,int nCmdShow)
{
	MessageBox(NULL,"\tHello World!","My first windows app",NULL);
	return 0;
}
line 5 is the
Code:
MessageBox(NULL,"\tHello World!","My first windows app",NULL);
I don't know what went wrong, I've followed everything in the tutorial.

thanks before