#include <windows.h>

LRESULT CALLBACK WndProc(HWND, UINT, WPARAM, LPARAM);

int APIENTRY WinMain(HINSTANCE hInstance,
					 HINSTANCE hPrevInstance,
					 LPSTR     lpCmdLine,
					 int       nCmdShow)
{
	char cname[] = "Class";
	char title[] = "Access to Web API";
	MSG msg;

	WNDCLASS wc;
	wc.style = 0;
	wc.lpfnWndProc = (WNDPROC)WndProc;
	wc.cbClsExtra = 0;
	wc.hInstance = hInstance;
	wc.hIcon = LoadIcon(hInstance, (LPCWSTR)IDI_APPLICATION);
	wc.hCursor = LoadCursor(NULL, IDC_ARROW);
	wc.hbrBackground = (HBRUSH)(COLOR_WINDOW + 1);
	wc.lpszMenuName = 0;
	wc.lpszClassName = cname;//ошибка компиляции: невозможно присвоить LPCWSTR = char *
	//пробую:
	//wc.lpszClassName = (LPCWSTR)cname;

	if (!RegisterClass(&wc))return 0;

	HWND hWnd = CreateWindow(
		cname, //ошибка и решение аналогичные вышеописанным
		title, //ошибка и решение аналогичные вышеописанным
		WS_OVERLAPPEDWINDOW,
		0,0,
		500,300,
		NULL,
		NULL,
		hInstance,
		NULL);
	if (!hWnd) return 0;

	ShowWindow(hWnd,nCmdShow);
	UpdateWindow(hWnd);

	while (GetMessage(&msg,NULL,0,0))
	{
		TranslateMessage(&msg);
		DispatchMessage(&msg);
	}

	return 0;
}

LRESULT CALLBACK WndProc(HWND hWnd, UINT message, WPARAM wParam, LPARAM lParam)
{
	switch (message)
	{
	case WM_CREATE:
		break;
	case WM_DESTROY:
		PostQuitMessage(0);
		break;
	case WM_PAINT:
		break;
	default:
		return DefWindowProc(hWnd, message, wParam, lParam);
	}
	return 0;
}