hi, I decided to start with OpenGL and found NeHe´s OpenGL tutorial. I did lesson 01 "Setting up an GL winodw". I wrote the hole thing and compiled it. A small part of the error massage I got is : OpenGL.obj : error LNK2019: unresolved external symbol __imp__UnregisterClassA@8 referenced in function "void __cdecl KillGLWindow(void)" (?KillGLWindow@@YAXXZ) The others are the quite the same. Don´t no what to do, maybe one of you got an answer. thx amoK

Did you link with the correct libraries, i.e. user32.lib, kernel32.lib etc.?

think so
this is my LIB Path :
LIB=F:\Program Files\Microsoft Visual Studio 8\Vc\LIB; F:\Program Files\Microsoft Visual Studio 8\SDK\v2.0\lib;F:\Program Files\Microsoft Platform SDK for Windows Server 2003 R2\Lib;


amoK

edit
yes, both kernel32 and user32 are there.

Hmm.. could you share some code then?

Here is the link to the lesson were i have this from:
http://nehe.gamedev.net/data/lessons/lesson.asp?lesson=01

This is a piece of the code:

GLvoid KillGLWindow(GLvoid) // Properly Kill The Window
{
if (fullscreen) // Are We In Fullscreen Mode?
{
ChangeDisplaySettings(NULL,0); // If So Switch Back To The Desktop
ShowCursor(TRUE); // Show Mouse Pointer
}
if (hRC) // Do We Have A Rendering Context?
{
if (!wglMakeCurrent(NULL,NULL)) // Are We Able To Release The DC And RC Contexts?
{
MessageBox(NULL,"Release Of DC And RC Failed.","SHUTDOWN ERROR",MB_OK | MB_ICONINFORMATION);

}
if (!wglDeleteContext(hRC)) // Are We Able To Delete The RC?
{
MessageBox(NULL,"Release Rendering Context Failed.","SHUTDOWN ERROR",MB_OK | MB_ICONINFORMATION);
}
hRC=NULL; // Set RC To NULL
}
if (hDC && !ReleaseDC(hWnd,hDC)) // Are We Able To Release The DC
{
MessageBox(NULL,"Release Device Context Failed.","SHUTDOWN ERROR",MB_OK | MB_ICONINFORMATION);
hDC=NULL; // Set DC To NULL
}
if (hWnd && !DestroyWindow(hWnd)) // Are We Able To Destroy The Window?
{
MessageBox(NULL,"Could Not Release hWnd.","SHUTDOWN ERROR",MB_OK | MB_ICONINFORMATION);
hWnd=NULL; // Set hWnd To NULL
}
if (!UnregisterClass("OpenGL",hInstance)) // Are We Able To Unregister Class
{
MessageBox(NULL,"Could Not Unregister Class.","SHUTDOWN ERROR",MB_OK | MB_ICONINFORMATION);
hInstance=NULL; // Set hInstance To NULL
}
}

amoK

What IDE are you using?

yes I worj with Visual 2005 Express Edition.
But I use another text editor, and compile in another shell, so I just typed the source code.
I will try to copy my code in a project.

amoK