#include <windows.h>
#include <winuser.h>
#include <stdio.h>
#include "resource1.h"
#include <cstdlib> 
#include <ctime> 
#include <iostream> 
#include <stdlib.h>
#include <conio.h>


//prototip funkcije za obradu poruka prozoru
LRESULT CALLBACK MainWndProc(HWND,UINT,WPARAM,LPARAM);	//	prototip funkcije za obradu poruka main prozora
//	prototip procedure za obradu dialog prozora About
BOOL CALLBACK DialogProcHelp(HWND,UINT,WPARAM,LPARAM);  
BOOL CALLBACK DialogAutor(HWND,UINT,WPARAM,LPARAM); //za autor

void ObradaPitanja(HWND);
char pitanje[1000];
char odgovor[100];
int broj_linije;
int WINAPI WinMain(HINSTANCE instanca,HINSTANCE hPrevInstance, LPSTR lpCmdLine, int nShowCmd)
{

 MSG Msg;
 WNDCLASSEX mojprozor;

 mojprozor.cbSize = sizeof(WNDCLASSEX);
 mojprozor.lpfnWndProc = MainWndProc;
 mojprozor.hInstance = instanca;
 const char imeklase[] = "Moja_klasa_prozor";
 mojprozor.lpszClassName = imeklase;
 mojprozor.hbrBackground = (HBRUSH)(COLOR_WINDOW+1);
 
 mojprozor.style = 0;
 mojprozor.cbClsExtra = 0;
 mojprozor.cbWndExtra = 0;
 mojprozor.hCursor = NULL;
 mojprozor.lpszMenuName = NULL;
 

 
mojprozor.hIcon= LoadIcon(NULL,IDI_QUESTION);

mojprozor.hIconSm= (HICON)LoadImage(GetModuleHandle(NULL), MAKEINTRESOURCE(IDI_ICON3), IMAGE_ICON, 16, 16, 0);
mojprozor.lpszMenuName= MAKEINTRESOURCE(IDR_MENU3);
mojprozor.hCursor=LoadCursor(GetModuleHandle (NULL),MAKEINTRESOURCE(IDC_CURSOR2));

 mojprozor.hbrBackground = (HBRUSH)(CreateSolidBrush(RGB(0xFF,0,0)));

//registrirati svoju klasu prozor
  if(!RegisterClassEx(&mojprozor))
    {
    MessageBox(NULL, "Neuspjela registracija prozora!", "Greška!",MB_ICONEXCLAMATION | MB_OK);
    return 0;
    }

//poziv funkcije CreateWindow
	HWND hwnd = CreateWindowEx(WS_EX_CLIENTEDGE,mojprozor.lpszClassName, "KVIZ v1.1",WS_OVERLAPPEDWINDOW, 200,200, 400, 400, NULL, NULL, mojprozor.hInstance, NULL);

//pozvati funkcije za show i update window
  ShowWindow(hwnd,nShowCmd);
  UpdateWindow(hwnd);

//ucitaj akceleratore 
	HACCEL hAccelTable=LoadAccelerators(GetModuleHandle(NULL),(LPCTSTR)IDR_ACCELERATOR1);

//petlja za citanje poruka
 while(GetMessage(&Msg, NULL, 0, 0) > 0)
    {
	   if (!TranslateAccelerator(Msg.hwnd, hAccelTable, &Msg)) {
				TranslateMessage(&Msg);  
				DispatchMessage(&Msg);}
		} 

    return 0;
}





//procedura za obradu poruka prozoru
LRESULT WINAPI MainWndProc(HWND hwnd, UINT msg, WPARAM wParam, LPARAM lParam) 
{
	char szFileName[MAX_PATH] = "";	//	za selektiranje filea za open/save...
	OPENFILENAME ofn;	//	deklariranje strukture ofn 
	ZeroMemory(&ofn, sizeof(ofn)); //popuni nulama da se neke funkcije ne bune
	ofn.lStructSize = sizeof(ofn); 
	ofn.hwndOwner = hwnd;
	ofn.lpstrFilter = "Text Files (*.txt)\0*.txt\0All Files (*.*)\0*.*\0";
	ofn.lpstrFile = szFileName;
	ofn.nMaxFile = MAX_PATH;
	ofn.Flags = OFN_EXPLORER | OFN_FILEMUSTEXIST | OFN_HIDEREADONLY|OFN_OVERWRITEPROMPT;
	ofn.lpstrDefExt = "txt";
	
	switch(msg)
    {
    case WM_COMMAND: 	
			switch (LOWORD(wParam))
				{
			
						case ID_IZBORNIK_NOVAIGRA:
						DialogBox(	GetModuleHandle(NULL), 
									MAKEINTRESOURCE(IDD_PITANJA), 
									hwnd, 
									(DLGPROC)DialogProcHelp);
						//ObradaPitanja();
				break;
			
			case ID_OIGRI_POMOC:
						DialogBox(	GetModuleHandle(NULL), 
									MAKEINTRESOURCE(IDD_POMOC), 
									hwnd, 
									(DLGPROC)DialogProcHelp);	
				break;

				case ID_OIGRI_AUTOR:
						DialogBox(	GetModuleHandle(NULL), 
									MAKEINTRESOURCE(IDD_AUTOR), 
									hwnd, 
									(DLGPROC)DialogAutor);	
				break;
				
				case ID_IZBORNIK_KRAJ:
				
				//MessageBox(NULL, "Poruka za kraj!", "Na koncu konca",MB_ICONEXCLAMATION | MB_OK);
				DestroyWindow(hwnd);
				break;

				default:
				return 0;
				}
				
	break;

	case WM_CLOSE:
    DestroyWindow(hwnd);
    break;
    case WM_DESTROY:
    PostQuitMessage(0);
    break;

	default:
    return DefWindowProc(hwnd, msg, wParam, lParam);
    }
    return 0;
   }
//procedura za obradu dialog prozora Pitanja
BOOL CALLBACK DialogProcHelp(HWND hwndDlg, 
                             UINT message, 
                             WPARAM wParam, 
							 LPARAM lParam) 
{ 
	//za centriranje u sredinu
	HWND hwndOwner; 
	RECT rc, rcDlg, rcOwner; 
    switch (message) 
    { 
        case WM_COMMAND: 
            switch (LOWORD(wParam)) 
            { 
                case IDCANCEL: 
                    EndDialog(hwndDlg, wParam); 
					return TRUE; 

				case IDOK: // obrada unešenog odgovora
                    int len = GetWindowTextLength(GetDlgItem(hwndDlg, IDC_EDIT1));
					if(len > 0)
					{
					//int i;
					char* buf;
					buf = (char*)GlobalAlloc(GPTR, len + 1);
					GetDlgItemText(hwndDlg, IDC_EDIT1, buf, len + 1);
					//... do stuff with text ...
					//ucitavanje odgovora iz datoteke
					int i,k=1;
					i=broj_linije;
						FILE *dat;
					    
						dat=fopen("odgovori","r");
						while(k<i)
							if (fgetc(dat)=='\n') ++k;
						for (i=0;;++i)
						{
							odgovor[i]=fgetc(dat);
							if (odgovor[i]==EOF || odgovor[i]=='\n')
							{
								odgovor[i]='\0';
								break;
							}
						}
						fclose(dat);
						//usporedivanje tocnog s unesenim odgovorom

						if( strcmp( odgovor, buf ) == 0 )
						MessageBox(NULL, "tocno!", "br!",MB_ICONEXCLAMATION | MB_OK);
						else
							MessageBox(NULL, "netocno!", "falio!",MB_ICONEXCLAMATION | MB_OK);
					GlobalFree((HANDLE)buf);
					}
					return TRUE;  
            }
		////////////////ZA CENTRIRANJE///////////////////
		/////////////////////////////////////////////////
		case WM_INITDIALOG: 
			// Get the owner window and dialog box rectangles. 

			if ((hwndOwner = GetParent(hwndDlg)) == NULL) 
			{
				hwndOwner = GetDesktopWindow(); 
			}

			GetWindowRect(hwndOwner, &rcOwner); 
			GetWindowRect(hwndDlg, &rcDlg); 
			CopyRect(&rc, &rcOwner); 

			// Offset the owner and dialog box rectangles so that right and bottom 
			// values represent the width and height, and then offset the owner again 
			// to discard space taken up by the dialog box. 

			OffsetRect(&rcDlg, -rcDlg.left, -rcDlg.top); 
			OffsetRect(&rc, -rc.left, -rc.top); 
			OffsetRect(&rc, -rcDlg.right, -rcDlg.bottom); 

			// The new position is the sum of half the remaining space and the owner's 
			// original position. 

			SetWindowPos(hwndDlg, 
						HWND_TOP, 
						rcOwner.left + (rc.right / 2), 
						rcOwner.top + (rc.bottom / 2), 
						0, 0,          // Ignores size arguments. 
						SWP_NOSIZE); 

			/*if (GetDlgCtrlID((HWND) wParam) != ID_ITEMNAME) 
			{ 
				SetFocus(GetDlgItem(hwndDlg, ID_ITEMNAME)); 
				return FALSE; 
			} */
			//pozivanje funkcije za obradu pitanja nakon kreiranja prozora
			
			ObradaPitanja(hwndDlg);
			return TRUE; 
		/////////////////////////////////////////////////
    } 
    return FALSE; 
} 
BOOL CALLBACK DialogAutor(HWND hwndDlg, 
                             UINT message, 
                             WPARAM wParam, 
							 LPARAM lParam) 
{ 
	//za centriranje u sredinu
	HWND hwndOwner; 
	RECT rc, rcDlg, rcOwner; 
    switch (message) 
    { 
        case WM_COMMAND: 
            switch (LOWORD(wParam)) 
            { 
                case IDOK: 
                    EndDialog(hwndDlg, wParam); 
					return TRUE;                 
            }
		////////////////ZA CENTRIRANJE///////////////////
		/////////////////////////////////////////////////
		case WM_INITDIALOG: 
			// Get the owner window and dialog box rectangles. 

			if ((hwndOwner = GetParent(hwndDlg)) == NULL) 
			{
				hwndOwner = GetDesktopWindow(); 
			}

			GetWindowRect(hwndOwner, &rcOwner); 
			GetWindowRect(hwndDlg, &rcDlg); 
			CopyRect(&rc, &rcOwner); 

			// Offset the owner and dialog box rectangles so that right and bottom 
			// values represent the width and height, and then offset the owner again 
			// to discard space taken up by the dialog box. 

			OffsetRect(&rcDlg, -rcDlg.left, -rcDlg.top); 
			OffsetRect(&rc, -rc.left, -rc.top); 
			OffsetRect(&rc, -rcDlg.right, -rcDlg.bottom); 

			// The new position is the sum of half the remaining space and the owner's 
			// original position. 

			SetWindowPos(hwndDlg, 
						HWND_TOP, 
						rcOwner.left + (rc.right / 2), 
						rcOwner.top + (rc.bottom / 2), 
						0, 0,          // Ignores size arguments. 
						SWP_NOSIZE); 

			/*if (GetDlgCtrlID((HWND) wParam) != ID_ITEMNAME) 
			{ 
				SetFocus(GetDlgItem(hwndDlg, ID_ITEMNAME)); 
				return FALSE; 
			} */
			return TRUE; 
		/////////////////////////////////////////////////
    } 
    return FALSE; 
} 


void ObradaPitanja(HWND handle)
{
//MessageBox(NULL, "test poruka!", "Greška!",MB_ICONEXCLAMATION | MB_OK);
srand((unsigned)time(0)); 
int random_integer; 
int lowest=1, highest=1000; 
int range=(highest-lowest)+1; 
random_integer = rand();//= lowest+int(range*rand()/(RAND_MAX + 1.0)); 

//char Poruka[10];
//sprintf (Poruka, "%d", random_integer);
//MessageBox(NULL, Poruka, "Random broj",MB_ICONEXCLAMATION | MB_OK);
// Sad imamo random broj linije

int i,k=1;
broj_linije=3;
i=3;//random_integer;
    FILE *dat;
    
    dat=fopen("pitanja","r");
    while(k<i)
        if (fgetc(dat)=='\n') ++k;
    for (i=0;;++i)
    {
        pitanje[i]=fgetc(dat);
        if (pitanje[i]==EOF || pitanje[i]=='\n')
        {
            pitanje[i]='\0';
            break;
        }
    }
    //MessageBox(NULL, pitanje, "pitanje",MB_ICONEXCLAMATION | MB_OK);
    fclose(dat);
	SetDlgItemText(handle, IDC_STATIC2, pitanje);
    //system("pause");
    

}