#include <windows.h>
#include <iostream>
using namespace std;
// prozorska procedura
HWND hwnd,hbutton1,hbutton2;
int x = 10, y = 10;
int CALLBACK WndProc(HWND hwnd, UINT iMsg, WPARAM wParam, LPARAM lParam){
HDC hdc;
PAINTSTRUCT ps;
int X = 0;

switch (iMsg) {
case WM_COMMAND:
break;
case WM_DESTROY: // Sistem javlja pokušaj gašenja prozora
PostQuitMessage(0); // tada postavi poruku za napuštanje reda
break;
case WM_KEYUP:
if (LOWORD (wParam) == VK_RIGHT) x += 10;
else if (LOWORD (wParam) == VK_LEFT) x -= 10;
else if (LOWORD (wParam) == VK_DOWN) y += 10;
else if (LOWORD (wParam) == VK_UP) y -= 10;
SetWindowPos(hbutton2, 0, x, y, 0, 0, 0x0001 | 0x0020 | 0x0040);
break;
case WM_PAINT:
hdc = BeginPaint(hwnd, &ps); // Uzmi oznaku konteksta ure?aja
// Ellipse(hdc,10,10,200,100);
//TextOut(hdc, x, y, "Hello world!", 12); // Prikaži poruku
EndPaint(hwnd, &ps); // Oslobodi kontekst ure?aja
break;
default: // Za ostale poruke standardno iscrtavanje
return DefWindowProc(hwnd, iMsg, wParam,lParam);
}
return 0;
}

int WINAPI WinMain(HINSTANCE hInstance, HINSTANCE hPrevInstance, LPSTR lpCmdLine, int iCmdShow) // Ulazna taeka u program
{
//HWND hwnd,hbutton1,hbutton2;
MSG msg;
WNDCLASS wndclass;
// Prozorska klasa je struktura koja se popuni prije kreiranja prozora
wndclass.style = 0;
wndclass.lpfnWndProc =
(WNDPROC) WndProc; // Funkcija koja se izvrši kada ima poruka za prozore ove klase
wndclass.cbClsExtra = 0;
wndclass.cbWndExtra = 0;
wndclass.hInstance = hInstance;
wndclass.hIcon = LoadIcon(NULL, IDI_APPLICATION);
wndclass.hCursor = LoadCursor(NULL, IDC_ARROW);
wndclass.hbrBackground =(HBRUSH)GetSysColorBrush(COLOR_3DFACE);
wndclass.lpszMenuName = NULL;
wndclass.lpszClassName = "ExampleClass";
RegisterClass(&wndclass); // Registruj prozorsku klasu
hwnd = CreateWindowEx(512,"ExampleClass", "A joooj, vidi :P", WS_OVERLAPPEDWINDOW,
0, 0, 500,400, NULL, NULL, hInstance, NULL); // Kreiraj prozor prema klasi
hbutton1 = CreateWindowEx(512,"BUTTON", "Pritisni me", WS_CHILD | WS_VISIBLE | BS_PUSHBUTTON,
200, 200, 80,40, hwnd, (HMENU)1, hInstance, NULL); // Kreiraj prozor prema klasi
hbutton2 = CreateWindowEx(512,"STATIC", "Hello World", WS_CHILD | WS_VISIBLE | ES_LEFT,
10,10, 170, 30, hwnd, (HMENU)2, hInstance, NULL); // Kreiraj prozor prema klasi

ShowWindow(hwnd, iCmdShow); // Prikazi prozor
UpdateWindow(hwnd);
// Izvrsava se petlja koja rasporedjuje poruke
while(GetMessage(&msg, NULL, 0, 0)) { // Kako stizu poruke
TranslateMessage(&msg); // Razbija ih u dodatne
DispatchMessage(&msg); // I salje u druge prozore
}
return msg.wParam;
}