Im using MVC++ and trying to make a window for a directx game. In my code I have not declared any dc header files and am just using headers the compiler came with. I made a win32 application and then made a new c++ file in the workspace my code compiles ok but it is when I try and run it is when I get the errors the code is #include #include const char *CLASSNAME = "Tutorial", *WINNAME = "Tutorial 2 - The Window"; LRESULT CALLBACK WndProc(HWND hWnd, unsigned int iMessage, WPARAM wParam, LPARAM lParam); int WINAPI WinMain(HINSTANCE hInstance, HINSTANCE, LPSTR, int nCmdShow) { HWND hWnd; MSG Message; WNDCLASS WndClass; // NOTE: The memset() here is added to deal with this code crashing on // WinNT (reported by Girish Deodhar, solution due to him as well) // The extra include statement is for memset() too... memset(&WndClass, 0, sizeof(WndClass)); WndClass.cbClsExtra = 0; WndClass.cbWndExtra = 0; // Typecast added. This line generated compiler errors on some // compilers previously. Thanks goes to Anton Rapoport for the tip. WndClass.hbrBackground = (HBRUSH)GetStockObject(WHITE_BRUSH); WndClass.hCursor = LoadCursor(NULL, IDC_ARROW); WndClass.hIcon = LoadIcon(hInstance, NULL); WndClass.hInstance = hInstance; WndClass.lpfnWndProc = WndProc; WndClass.lpszClassName = CLASSNAME; WndClass.style = CS_HREDRAW / CS_VREDRAW; if(!RegisterClass(&WndClass)) return 0; hWnd = CreateWindow(CLASSNAME, WINNAME, WS_OVERLAPPEDWINDOW, CW_USEDEFAULT, CW_USEDEFAULT, 300, 100, NULL, NULL, hInstance, NULL); ShowWindow(hWnd, nCmdShow); while(GetMessage(&Message, hWnd, 0, 0)) { TranslateMessage(&Message); DispatchMessage(&Message); } return Message.wParam; } LRESULT CALLBACK WndProc(HWND hWnd, UINT iMessage, WPARAM wParam, LPARAM lParam) { switch(iMessage) { case WM_CLOSE: case WM_DESTROY: if(MessageBox(hWnd, "Do you really want to quit?", "Message", MB_YESNO) == IDYES) PostQuitMessage(0); break; default: return DefWindowProc(hWnd, iMessage, wParam, lParam); } return 0; } and the linking errors are LIBCD.lib(crt0.obj) : error LNK2001: unresolved external symbol _main Debug/dxx.exe : fatal error LNK1120: 1 unresolved externals

I can''t see what you are including because the message board dont like to print stuff inside of those braces but you need to include
windows.h
windowsx.h
mmsystem.h

i believe you only need the last one if you are going to use multi-media features like sound and such for your application
but it is good to include it anyway

"Now go away or I shall taunt you a second time"
- Monty Python and the Holy Grail

quote: Original post by OoMMMoO

LIBCD.lib(crt0.obj) : error LNK2001: unresolved external symbol _main
Debug/dxx.exe : fatal error LNK1120: 1 unresolved externals

The linker can't find the function 'main'. Windows programs don't use it (well, they do, but in the background), so I suspect you've created a console application, or your project settings have gotten screwed up.

Either that, or the compiler has gone mad and is not looking in the right place for things.

Create a new "Win32 application" project, and see if it compiles:
-If it does, that means your project is somehow misconfigured. The easiest solution is to create a new project for yourself (or use the one you just used to test the system), and copy files over to it.
-If it doesn't, I'd say you're looking at reinstalling VC++.

TheTwistedOne
http://www.angrycake.com

Edited by - TheTwistedOne on June 13, 2000 5:24:14 AM