Thread: srand()

>>So how would I make it choose between 1-100?<<

faq.

Or better yet, Prelude's article: http://eternallyconfuzzled.com/articles/rand.html

Originally Posted by bikr692002

GAH
Alright I have to write it to be a GUI >.<
Sooo
The GUI window will be
+---------------------------------------------------------------------------+
| |
| *Title* |
| |
| |ListboxTypeName| |Type num of tickets| |Submit button| |
| |List all people and number of tickets| |
| |
| |Display winner and ticket number| |
| |
+---------------------------------------------------------------------------+

Code tags preserve formatting . . .

Code:

+---------------------------------------------------------------------------+
|                                                                           |
|           *Title*                                                         |
|                                                                           |
|    |ListboxTypeName| |Type num of tickets| |Submit button|                |
|     |List all people and number of tickets|                               |
|                                                                           |
|        |Display winner and ticket number|                                 |
|                                                                           |
+---------------------------------------------------------------------------+

Have you done any GUI programming before?

Windows controls.

Code:

#include <windows.h>
HINSTANCE g_hInst;
LRESULT CALLBACK WndProc(HWND,UINT,WPARAM,LPARAM);
int WINAPI WinMain(HINSTANCE hInstance,HINSTANCE hPrevInstance,
					LPSTR lpCmdLine,int nCmdShow)
{
	MSG Msg;
	HWND hwnd;
	WNDCLASSEX wincl;
	g_hInst=hInstance;
	TCHAR chClassName[]=TEXT("TheThing");

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

	if(!RegisterClassEx(&wincl))
	{
		MessageBox(0,"Window Registration Failed!","Error!",MB_ICONSTOP|MB_OK);
		return 0;
	}
	hwnd=CreateWindowEx(0,chClassName,"TheThing",WS_OVERLAPPEDWINDOW,
						CW_USEDEFAULT,CW_USEDEFAULT,660,480,HWND_DESKTOP,NULL,
						hInstance,NULL);
	if(hwnd==NULL)
	{
		MessageBox(0,"Window Creation Failed!","Error",MB_ICONSTOP|MB_OK);
		return 0;
	}
	ShowWindow(hwnd,nCmdShow);
	UpdateWindow(hwnd);
	while(GetMessage(&Msg,NULL,0,0))
	{
		TranslateMessage(&Msg);
		DispatchMessage(&Msg);
	}
	return Msg.wParam;
}
LRESULT CALLBACK WndProc(HWND hwnd,UINT msg,WPARAM wParam,LPARAM lParam)
{
	HDC hdc;
	PAINTSTRUCT ps;
	TCHAR chTxt[32];
	HWND hButton,hCombo,hCombo2;
	LPSTR Greeting,Question,Option;
	Option="Person";
	Greeting="Well here it is, thanks for putting me through hell";
	Question="Add person and number of tickets";

	switch(msg)
	{
		case WM_CREATE:
			hCombo=CreateWindowEx(NULL,"COMBOBOX","People",
				WS_CHILD|WS_VISIBLE|CB_ADDSTRING,
				120,240,180,100,hwnd,(HMENU)ID_COMBOBOX1,g_hInst,NULL);
			hCombo2=CreateWindowEx(NULL,"COMBOBOX","People",
				WS_CHILD|WS_VISIBLE|CB_ADDSTRING,
				120,260,80,70,hwnd,(HMENU)ID_COMBOBOX2,g_hInst,NULL);
					SendMessage(hCombo2,CB_ADDSTRING,0,(LPARAM)chTxt);
					lstrcpy(chTxt,"1");
					SendMessage(hCombo2,CB_ADDSTRING,0,(LPARAM)chTxt);
					lstrcpy(chTxt,"2");
					SendMessage(hCombo2,CB_ADDSTRING,0,(LPARAM)chTxt);
					lstrcpy(chTxt,"3");
					SendMessage(hCombo2,CB_ADDSTRING,0,(LPARAM)chTxt);
					lstrcpy(chTxt,"4");
					SendMessage(hCombo2,CB_ADDSTRING,0,(LPARAM)chTxt);
					lstrcpy(chTxt,"5");
					SendMessage(hCombo2,CB_ADDSTRING,0,(LPARAM)chTxt);
					lstrcpy(chTxt,"6");
					SendMessage(hCombo2,CB_ADDSTRING,0,(LPARAM)chTxt);
					lstrcpy(chTxt,"7");
					SendMessage(hCombo2,CB_ADDSTRING,0,(LPARAM)chTxt);
					lstrcpy(chTxt,"8");
					SendMessage(hCombo2,CB_ADDSTRING,0,(LPARAM)chTxt);
					lstrcpy(chTxt,"9");
					SendMessage(hCombo2,CB_ADDSTRING,0,(LPARAM)chTxt);
					lstrcpy(chTxt,"10");
					SendMessage(hCombo2,CB_ADDSTRING,0,(LPARAM)chTxt);
					lstrcpy(chTxt,"11");
					SendMessage(hCombo2,CB_ADDSTRING,0,(LPARAM)chTxt);
					lstrcpy(chTxt,"12");
					SendMessage(hCombo2,CB_ADDSTRING,0,(LPARAM)chTxt);
					lstrcpy(chTxt,"13");
					SendMessage(hCombo2,CB_ADDSTRING,0,(LPARAM)chTxt);
					lstrcpy(chTxt,"14");
					SendMessage(hCombo2,CB_ADDSTRING,0,(LPARAM)chTxt);
					lstrcpy(chTxt,"15");
			hButton=CreateWindowEx(NULL,"Button","Submit",
				WS_BORDER|WS_CHILD|WS_VISIBLE|BS_PUSHBUTTON,
				500,240,65,25,hwnd,NULL,g_hInst,NULL);
			break;
		case WM_PAINT:
			hdc=BeginPaint(hwnd,&ps);
			TextOut(hdc,160,40,Greeting,strlen(Greeting));
			TextOut(hdc,196,160,Question,strlen(Question));
			TextOut(hdc,20,240,Option,strlen(Option));
			EndPaint(hwnd,&ps);
			break;
		case WM_CLOSE:
			DestroyWindow(hwnd);
			break;
		case WM_DESTROY:
			PostQuitMessage (0);
			break;
		default:
			return DefWindowProc(hwnd,msg,wParam,lParam);
	}
	return 0;
}

But it won't compile
for (HWND) ID_COMBOBOX1 and (HWND) ID_COMBOBOX2 its sayign its undefined

Oh yeah and how do I let people type things in to the box?

. . . how do I let people type things in to the box?

With a textbox?

I have no idea. I've never programmed GUI programs with C++.

You might want to see if you can glean any information from this page, though: http://msdn.microsoft.com/library/de...ClassTopic.asp

But it won't compile
for (HWND) ID_COMBOBOX1 and (HWND) ID_COMBOBOX2 its sayign its undefined

Yes. Because they're... undefined. Try... defining... them. Seriously. You should probably have a header with #define ID_COMBOBOX2 (somenumberhere).

WS_CHILD|WS_VISIBLE|CB_ADDSTRING

That isn't a valid style for a combobox. CB_ADDSTRING is a message that you can pass to a combobox, but not a style.

Code:

SendMessage(hCombo2,CB_ADDSTRING,0,(LPARAM)chTxt);
lstrcpy(chTxt,"1");

You might want to store the string to the variable before telling the combobox to add that string. Since you don't bother to initialize your variables, Bad Things(TM) could happen.
However, since all your strings are constant, you can just say:

Code:

SendMessage(hCombo2, CB_ADDSTRING, 0, (LPARAM) "My string");

Or, since you're adding numbers that are consecutive, why not make a loop?

What do you mean the CB_ADDSTRING doesn't work?
guess I'll use CBS_HASSTRINGS then

Code:

Check new post

that is what I have so far. If you guys can tell me why it messes up when it inputs the UserName and NumOfTickets it would be greatly appreciated