#include LPARAM CALLBACK WndProc(HWND,UINT,WPARAM,LPARAM); int WINAPI WinMain(HINSTANCE hInstance, HINSTANCE hPrevInstance, PSTR szCmdLine, int nCmdShow) { MSG msg; HWND hwnd; WNDCLASSEX wc; wc.cbSize = sizeof(wc); wc.style = CS_VREDRAW | CS_HREDRAW; wc.lpfnWndProc = WndProc; wc.cbClsExtra = 0; wc.cbWndExtra = 0; wc.hInstance = hInstance; wc.hIcon = LoadIcon(NULL,IDI_WINLOGO); wc.hCursor = LoadCursor(NULL, IDC_ARROW); wc.hbrBackground = (HBRUSH)(COLOR_WINDOW+1); wc.lpszMenuName = "Miguel Angel"; wc.lpszClassName = "Window Class 1"; wc.hIconSm = LoadIcon(NULL,IDI_WINLOGO); RegisterClassEx(&wc); hwnd = CreateWindow("Window Class 1", "Miguel Angel", WS_OVERLAPPEDWINDOW, CW_USEDEFAULT, CW_USEDEFAULT, CW_USEDEFAULT, CW_USEDEFAULT, NULL, NULL, hInstance, NULL); ShowWindow(hwnd,nCmdShow); UpdateWindow(hwnd); while(GetMessage(&msg,NULL,0,0)) { TranslateMessage(&msg); DispatchMessage(&msg); } return msg.wParam; } LPARAM CALLBACK WndProc(HWND hwnd,UINT imsg,WPARAM wParam,LPARAM lParam) { switch(imsg) { case WM_DESTROY: PostQuitMessage(0); break; } return DefWindowProc(hwnd,imsg,wParam,lParam); } When i write this program, i got this two errors: LIBCD.lib(crt0.obj) : error LNK2001: unresolved external symbol _main Debug/Prueba.exe : fatal error LNK1120: 1 unresolved externals Could anyone explain what´s wrong, please??

your source file should have cpp extension

Did you include Windowx.h or Windows.h ?

Are you including ?..

I think it overrides that standard "main" so the compiler will accept "WinMain"..

I had this problem once before when I first started win32 programming, I think that''s what it was..

Assuming you're using MSVC, did you create this project as a Win32 CONSOLE app? Try creating it as a Win32 application....it compiled for me just fine.

Edited by - noparity on July 20, 2001 6:41:23 PM

Hi- I just went through a similar problem- check out the beginner section- post titled something like "Linking error- solved ty"