#include <Windows.h>

LRESULT CALLBACK WndProc(HWND hwnd, UINT iMsg, WPARAM wParam, LPARAM lParam);

int WINAPI WinMain(HINSTANCE hInstance, HINSTANCE hPrevInstance, LPTSTR lpszCmdLine, int nCmdShow)
{
 HWND hwnd;
 MSG msg;
 WNDCLASS WndClass;
 WndClass.style = CS_HREDRAW | CS_HREDRAW;
 WndClass.lpfnWndProc = WndProc;
 WndClass.cbClsExtra = 0;
 WndClass.cbWndExtra = 0;
 WndClass.hInstance = hInstance;
 WndClass.hIcon = LoadIcon(NULL, IDI_APPLICATION);
 WndClass.hCursor = LoadCursor(NULL, IDC_ARROW);
 WndClass.hbrBackground = (HBRUSH)GetStockObject(WHITE_BRUSH);
 WndClass.lpszMenuName = NULL;
 WndClass.lpszClassName = "Window Class Name"; <<--
 
 RegisterClass(&WndClass);

 hwnd = CreateWindow("Window Class name", <<--
  "Window Title Name",
  WS_OVERLAPPEDWINDOW,
  CW_USEDEFAULT,


<<--가 에러나는 부분