#include <Windows.h>
#include <iostream>
using namespace std;

void TellError(const char* error){
	cout << error << endl;
}

int AppRunning = 1;

LRESULT CALLBACK WindowProcedure(HWND hWnd,UINT msg,WPARAM wparam,LPARAM lparam) {

	switch(msg){
        case WM_KEYDOWN:
            AppRunning=0;
            break;
        case WM_CLOSE:
            DestroyWindow(hWnd);
            break;
        case WM_DESTROY:
            PostQuitMessage(0);
            break;
    }

    return DefWindowProc(hWnd,msg,wparam,lparam);
}

HWND createWindow(WNDPROC wndProc, int nCmdShow) {

	HINSTANCE hInstance = GetModuleHandle(0);
	WNDCLASS WindowClass;

	WindowClass.style           = 0;
	WindowClass.lpfnWndProc     = wndProc;
	WindowClass.cbClsExtra      = 0;
	WindowClass.cbWndExtra      = 0;
	WindowClass.hInstance       = hInstance;
	WindowClass.hIcon           = LoadIcon(hInstance, (LPCTSTR)IDI_APPLICATION);
	WindowClass.hCursor         = LoadCursor(NULL, IDC_ARROW);
	WindowClass.hbrBackground   = (HBRUSH)(COLOR_WINDOW+1);
	WindowClass.lpszMenuName    = 0;
	WindowClass.lpszClassName   = TEXT("Class");
	RegisterClass(&WindowClass);

	HWND hWnd = CreateWindow(
		"Class",
		NULL,
		WS_BORDER|WS_VISIBLE,
		CW_USEDEFAULT,
		CW_USEDEFAULT,
		CW_USEDEFAULT,
		CW_USEDEFAULT,
		0,0,
		hInstance,
		NULL
	);

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

	return hWnd;
}


int main() {
	cout << "Start" << endl;
	MSG msg;
	HWND hWnd = createWindow(WindowProcedure, 0);//NewWindow("Hello window", 0, 0, 100, 100);
	if(!hWnd){
		TellError("Cannot create window!");
		return 0;
	}
	while(AppRunning){
		if(PeekMessage(&msg,hWnd,0,0,PM_REMOVE)){
			//if(!IsDialogMessage(hWnd,&msg)){
				TranslateMessage(&msg);
				DispatchMessage(&msg);
			//}
		}
	}
	DestroyWindow(hWnd);
	cout << "End" << endl;

	return 0;
}