#include "stdafx.h"
#include <windows.h>
#include <stdlib.h>
#include <stdio.h>
#define ID_EDIT 101
#define IDB_RADIO1 102
#define IDB_RADIO2 103
#define ID_STATIC 104
wchar_t ClassName[] = L"MainWindowClass";
wchar_t Bufor[100];
#pragma warning(disable : 4996)
HWND hEditField;
HWND hWndButton1;
HWND hWndButton2;
HWND hStatic;

BOOL CalToCm = true;
wchar_t x[200];

double ConvertToCal()
{
	double temp, result;
	temp = _wtof(Bufor);
	result = temp / 2, 54;
	return result;
}

double ConvertToCm()
{
	double temp, result;
	temp = _wtof(Bufor);
	result = temp * 2, 54;
	return result;
}



LRESULT CALLBACK WndProc(HWND hWnd, UINT Msg, WPARAM wParam, LPARAM lParam)
{
	switch (Msg)
	{
	case WM_CREATE:
	{
		HINSTANCE hInstance = (HINSTANCE)GetWindowLong(hWnd, GWL_HINSTANCE);

		hEditField = CreateWindowEx(0, TEXT("edit"), TEXT("Wprowadź wartość"), WS_VISIBLE | WS_CHILD | WS_BORDER, 10, 10, 160, 20, hWnd, (HMENU)ID_EDIT, hInstance, NULL);
		hWndButton1 = CreateWindowEx(0, TEXT("BUTTON"), TEXT("cm -> cale"), WS_VISIBLE | WS_CHILD | BS_RADIOBUTTON, 10, 40, 160, 20, hWnd, (HMENU)IDB_RADIO1, hInstance, NULL);
		hWndButton2 = CreateWindowEx(0, TEXT("BUTTON"), TEXT("cale -> cm"), WS_VISIBLE | WS_CHILD | BS_RADIOBUTTON, 10, 70, 160, 20, hWnd, (HMENU)IDB_RADIO2, hInstance, NULL);
		hStatic = CreateWindowEx(0, TEXT("static"), TEXT("Wynik"), WS_VISIBLE | WS_CHILD | WS_BORDER, 10, 100, 160, 20, hWnd, (HMENU)ID_STATIC, hInstance, NULL);
	}
	break;

	case WM_COMMAND:
	{
		switch (LOWORD(wParam))
		{
		case ID_EDIT:
		{
			switch (HIWORD(wParam))
			{
			case EN_CHANGE:
			{
				//DWORD dlugosc = GetWindowTextLength(hEditField);
				//Bufor = (LPWSTR)GlobalAlloc(GPTR, dlugosc + 1);
				GetWindowText(hEditField, Bufor, 100);

				if (CalToCm == 'true')
				{
					//double liczba = ConvertToCm(Bufor);
					//swprintf_s(Bufor, 100, "%f", liczba);
					swprintf(Bufor, L"%f", ConvertToCm());
					SetWindowText(hStatic, Bufor);
				}
				else
				{
					swprintf(Bufor, L"%f", ConvertToCal());
					SetWindowText(hStatic, Bufor);
				}
			}
			}
		}
		break;
		case IDB_RADIO1:
		{
			switch (HIWORD(wParam))
			{
			case BN_CLICKED:
				if (SendDlgItemMessage(hWnd, IDB_RADIO1, BM_GETCHECK, 0, 0) == 0)
				{
					SendDlgItemMessage(hWnd, IDB_RADIO1, BM_SETCHECK, 1, 0);
					SendDlgItemMessage(hWnd, IDB_RADIO2, BM_SETCHECK, 0, 0);

					CalToCm = 1;
					swprintf(Bufor, L"%f", ConvertToCm());
					SetWindowText(hStatic, Bufor);
				}
				break;
			}

		}
		break;

		case IDB_RADIO2:
		{
			switch (HIWORD(wParam))
			{
			case BN_CLICKED:
				if (SendDlgItemMessage(hWnd, IDB_RADIO2, BM_GETCHECK, 0, 0) == 0)
				{
					SendDlgItemMessage(hWnd, IDB_RADIO2, BM_SETCHECK, 1, 0);
					SendDlgItemMessage(hWnd, IDB_RADIO1, BM_SETCHECK, 0, 0);

					CalToCm = 0;
					swprintf(Bufor, L"%f", ConvertToCal());
					SetWindowText(hStatic, Bufor);
				}
				break;
			}


		}
		break;
		}

		return 0;
	}
	break;

	case WM_CLOSE:
		//GlobalFree(Bufor);
		DestroyWindow(hWnd);
		break;

	case WM_DESTROY:
		PostQuitMessage(0);
		break;

	default:
		return (DefWindowProc(hWnd, Msg, wParam, lParam));
	}

	return 0;
}


INT WINAPI WinMain(HINSTANCE  hInstance,
	HINSTANCE  hPrevInstance,
	LPSTR      lpCmdLine,
	INT        nCmdShow)
{

	WNDCLASSEX    wc;
	wc.cbSize = sizeof(WNDCLASSEX);
	wc.style = 0;
	wc.lpfnWndProc = (WNDPROC)WndProc;
	wc.cbClsExtra = 0;
	wc.cbWndExtra = 0;
	wc.hInstance = hInstance;
	wc.hIcon = LoadIcon(NULL, IDI_APPLICATION);
	wc.hIconSm = 0;
	wc.hCursor = LoadCursor(NULL, IDC_ARROW);
	wc.hbrBackground = (HBRUSH)(COLOR_WINDOW + 1);
	wc.lpszMenuName = NULL;
	wc.lpszClassName = ClassName;

	if (!RegisterClassEx(&wc))
	{
		MessageBox(NULL, TEXT("Failed To Register The Window Class."), TEXT("Error"), MB_OK | MB_ICONERROR);
		return 0;
	}

	HWND hWnd = CreateWindowEx(
		WS_EX_CLIENTEDGE,
		ClassName,
		TEXT("Radio Buttons"),
		WS_OVERLAPPEDWINDOW,
		CW_USEDEFAULT,
		CW_USEDEFAULT,
		400,
		300,
		NULL,
		NULL,
		hInstance,
		NULL);

	if (!hWnd)
	{
		MessageBox(NULL, TEXT("Window Creation Failed."), TEXT("Error"), MB_OK | MB_ICONERROR);
		return 0;
	}

	ShowWindow(hWnd, SW_SHOW);
	UpdateWindow(hWnd);

	MSG    Msg;
	while (GetMessage(&Msg, NULL, 0, 0))

	{
		TranslateMessage(&Msg);
		DispatchMessage(&Msg);
	}

	return Msg.wParam;
}