LRESULT CALLBACK WndProc (HWND hwnd, UINT msg, WPARAM wParam, LPARAM lParam)
{
switch (msg)
{
case WM_LBUTTONDOWN:
{
HDC hdc = GetDC (hwnd);
LineTo (hdc, LOWORD (lParam), HIWORD (lParam));
ReleaseDC (hwnd, hdc);
}
break;
case WM_LBUTTONDBLCLK:
{
HDC hdc = GetDC (hwnd);
Ellipse (hdc, LOWORD (lParam) - 3, HIWORD (lParam) - 3, LOWORD (lParam) + 3, HIWORD (lParam) + 3);
ReleaseDC (hwnd, hdc);
}
break;
case WM_CLOSE:
DestroyWindow (hwnd);
break;
case WM_DESTROY:
PostQuitMessage (0);
break;
default:
return DefWindowProc (hwnd, msg, wParam, lParam);
}
return 0;
}
Podczas kompilacji wywala mi:
[Linker error] undefined reference to LineTo@12' [Linker error] undefined reference to
Ellipse@20'