The Big Programming Thread - Page 92

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SRBNikola

Serbia191 Posts

October 29 2011 19:33 GMT

#1821

On October 30 2011 04:28 delHospital wrote:

Show nested quote +

use sscanf from stdio.h

Show nested quote +

On October 30 2011 04:22 LionKiNG wrote:
EDIT: Sorry, this should work better:

char ch = "A";
int i = ch;
double = (double)i;

this won't even compile

I fixed quotations, it was typo and yes it compiles.

Isualin

Germany1903 Posts

October 29 2011 19:38 GMT

#1822

yes and i have to use two stacks to hold the values, . one will keep 6,8,2 and 45 other one will keep '-' '*' and '+', but i dont have problems with that. thanks for help i will try these

Craton

United States17303 Posts

October 30 2011 12:50 GMT

#1823

I'm working on a way to programmatically open a user's default browser, maximize it, and press play on an embedded flash stream, specifically for Own3D. I'm using C# / Windows Forms.

This URL will autoplay, but the player size is fixed (and small) and I don't know how (or if you can) full screen the flash player from the program.

System.Diagnostics.Process.Start("http://www.own3d.tv/liveembed/81266?autoPlay=true");

This URL will fit the screen (so it's as big as the browser), but won't autoplay.

System.Diagnostics.Process.Start("http://www.own3d.tv/livepopout/clgame_38728");

I'm also unsure how to maximize the browser after opening it, while still making sure it's at the front of whatever else is open.

Necosarius

Sweden4042 Posts

October 30 2011 12:59 GMT

#1824

On October 26 2011 01:01 LunaSaint wrote:
Necosarius:

Tuples can't be changed when they're made, so the method you currently use would not work with them.
Also, you said that you were meant to make a list of tuples. A list of tuples would look like this:

[(0,0), (0,1), (0,2)]

This basically makes a table that has as many columns as there are tuples, and as many rows as there are values within the tuples. In other words, you're making a structure like this:

0|0|0
0|1|2

If that doesn't help, the spoiler details how it would look for a dictionary.

+ Show Spoiler [What a dictionary would look like as a…] +

[("Apple", "A red or green fruit found on trees."), ("Banana", "A yellow, curved fruit found on trees in warmer climates."), ('Name', 'Description')]

This way, you have a list of tuples containing a word and its definition.


Apple                               |Banana
A red or green fruit found on trees.|A yellow, curved fruit found on trees in...

You said you just wanted a hint, so I won't explain how you'd integrate it into a dictionary, but I hope that makes sense.

--

Halp!:

I'm going to be using Python with Pygame to make a basic Turn Based Strategy using a square grid system, but there's still a lot of image based functions of Pygame I don't grasp.
I'm trying to work out how to import a segment of an image only - in this case, a tile from a tileset.

Thank you, I was able to figure it out ^^

Deleted User 101379

4849 Posts

October 30 2011 13:09 GMT

#1825

On October 30 2011 21:50 Craton wrote:
I'm working on a way to programmatically open a user's default browser, maximize it, and press play on an embedded flash stream, specifically for Own3D. I'm using C# / Windows Forms.

This URL will autoplay, but the player size is fixed (and small) and I don't know how (or if you can) full screen the flash player from the program.

System.Diagnostics.Process.Start("http://www.own3d.tv/liveembed/81266?autoPlay=true");

This URL will fit the screen (so it's as big as the browser), but won't autoplay.

System.Diagnostics.Process.Start("http://www.own3d.tv/livepopout/clgame_38728");

I'm also unsure how to maximize the browser after opening it, while still making sure it's at the front of whatever else is open.

While this isn't impossible, it's very close to that since you can't control a Firefox, Chrome or Opera browser directly.

However, you can use a WebBrowser Control in your application to embed the Internet Explorer and open the page with it. AFAIK it is also possible to execute your own Javascript to "press play" on the stream.

Then just have the WebBrowser instance open in a new, maximized frame with "Always on Top" enabled and it should work as you want it to.

Haven't used the WebBrowser Control myself, so can't give you any specifics, but i have seen similar things done with it.

Craton

United States17303 Posts

October 30 2011 13:43 GMT

#1826

You'd have to give me an example on how to javascript rig it to start / full screen.

My googling seems to imply that such a thing is impossible.

The ActionScript that initiates full-screen mode can be called only in response to a mouse event or keyboard event. If it is called in other situations, Flash Player throws an exception.

http://help.adobe.com/en_US/ActionScript/3.0_ProgrammingAS3/WS5b3ccc516d4fbf351e63e3d118a9b90204-7c5d.html

How can I open a web browser through C# that has the bars at the top hidden and scroll bars disabled? I know you can normally do it through an html button with javascript tied to it, but I can't figure out how to do that in C#.

---

Running the code below throws an error:
ex = {"ActiveX control '8856f961-340a-11d0-a96b-00c04fd705a2' cannot be instantiated because the current thread is not in a single-threaded apartment."}

frmBrowser is a form containing a WebBrowser control and nothing else. The earlier part of the code basically sets an alarm and when it goes off calls the second function. I set it to just wait 2 seconds for development purposes.


using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Text;
using System.Windows.Forms;
using System.Globalization;
using System.Threading;
using System.IO;

namespace WindowsFormsApplication3
{
    public partial class Form1 : Form
    {
        public Form1()
        {
            InitializeComponent();
        }

        private void button1_Click(object sender, EventArgs e)
        {
            CultureInfo provider = CultureInfo.CurrentCulture;

            DateTime alarmDateTime = DateTime.Now.AddSeconds(2);
            OpenBrowser openBrowser = new OpenBrowser();
            TimerCallback callback = openBrowser.CheckOnline;

            System.Threading.Timer timer = new System.Threading.Timer(callback, null, alarmDateTime - DateTime.Now, TimeSpan.FromHours(24));
        }
    }

    class OpenBrowser
    {
        public void CheckOnline(Object stateInfo)
        {
            try
            {
                String id = "13574";

                OpenStream(id);
            }
            catch (Exception ex)
            {
                Console.WriteLine(ex);
            }
        }

        private void OpenStream(string id)
        {
            frmBrowser frm = new frmBrowser();
        }
    }
}

Program.cs


using System;
using System.Collections.Generic;
using System.Linq;
using System.Windows.Forms;

namespace WindowsFormsApplication3
{
    static class Program
    {
        /// <summary>
        /// The main entry point for the application.
        /// </summary>
        [STAThread]
        static void Main()
        {
            Application.EnableVisualStyles();
            Application.SetCompatibleTextRenderingDefault(false);
            Application.Run(new Form1());
        }
    }

File: http://www.mediafire.com/?ef958apbjgn369b

I condensed everything from the original project to this secondary project to try and weed out the problem, but I can't figure out how to solve it.

Orome

Switzerland11984 Posts

October 31 2011 03:02 GMT

#1827

edit: nvm

Deleted User 101379

4849 Posts

October 31 2011 08:21 GMT

#1828

On October 30 2011 22:43 Craton wrote:
You'd have to give me an example on how to javascript rig it to start / full screen.

My googling seems to imply that such a thing is impossible.

Show nested quote +


using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Text;
using System.Windows.Forms;
using System.Globalization;
using System.Threading;
using System.IO;

namespace WindowsFormsApplication3
{
    public partial class Form1 : Form
    {
        public Form1()
        {
            InitializeComponent();
        }

        private void button1_Click(object sender, EventArgs e)
        {
            CultureInfo provider = CultureInfo.CurrentCulture;

            DateTime alarmDateTime = DateTime.Now.AddSeconds(2);
            OpenBrowser openBrowser = new OpenBrowser();
            TimerCallback callback = openBrowser.CheckOnline;

            System.Threading.Timer timer = new System.Threading.Timer(callback, null, alarmDateTime - DateTime.Now, TimeSpan.FromHours(24));
        }
    }

    class OpenBrowser
    {
        public void CheckOnline(Object stateInfo)
        {
            try
            {
                String id = "13574";

                OpenStream(id);
            }
            catch (Exception ex)
            {
                Console.WriteLine(ex);
            }
        }

        private void OpenStream(string id)
        {
            frmBrowser frm = new frmBrowser();
        }
    }
}

Program.cs


using System;
using System.Collections.Generic;
using System.Linq;
using System.Windows.Forms;

namespace WindowsFormsApplication3
{
    static class Program
    {
        /// <summary>
        /// The main entry point for the application.
        /// </summary>
        [STAThread]
        static void Main()
        {
            Application.EnableVisualStyles();
            Application.SetCompatibleTextRenderingDefault(false);
            Application.Run(new Form1());
        }
    }

File: http://www.mediafire.com/?ef958apbjgn369b

I condensed everything from the original project to this secondary project to try and weed out the problem, but I can't figure out how to solve it.

You are creating the frmBrowser from a different Thread. This is not allowed by .NET. You have to use Invoke to change the thread context to the GUI thread.

Pass a reference to the Form1 to OpenBrowser and then call yourForm1Variable.Invoke(OpenStream, new object[]{id}).

See: http://msdn.microsoft.com/en-US/library/a1hetckb.aspx

As for executing Javascript in the WebBrowser Control a quick google showed this two links. For more details, you might have to google yourself:

http://notions.okuda.ca/2009/06/11/calling-javascript-in-a-webbrowser-control-from-c/
http://stackoverflow.com/questions/1437251/calling-a-javascript-function-in-the-c-sharp-webbrowser-control

The scrollbars can be removed by injecting a CSS style (for example via Javascript), i think it's "body.scroll" that has to be set to "no". From what i found from google, it's not possible to do that via C#.

SRBNikola

Serbia191 Posts

October 31 2011 18:19 GMT

#1829

On October 30 2011 22:43 Craton wrote:
You'd have to give me an example on how to javascript rig it to start / full screen.

My googling seems to imply that such a thing is impossible.

Show nested quote +


using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Text;
using System.Windows.Forms;
using System.Globalization;
using System.Threading;
using System.IO;

namespace WindowsFormsApplication3
{
    public partial class Form1 : Form
    {
        public Form1()
        {
            InitializeComponent();
        }

        private void button1_Click(object sender, EventArgs e)
        {
            CultureInfo provider = CultureInfo.CurrentCulture;

            DateTime alarmDateTime = DateTime.Now.AddSeconds(2);
            OpenBrowser openBrowser = new OpenBrowser();
            TimerCallback callback = openBrowser.CheckOnline;

            System.Threading.Timer timer = new System.Threading.Timer(callback, null, alarmDateTime - DateTime.Now, TimeSpan.FromHours(24));
        }
    }

    class OpenBrowser
    {
        public void CheckOnline(Object stateInfo)
        {
            try
            {
                String id = "13574";

                OpenStream(id);
            }
            catch (Exception ex)
            {
                Console.WriteLine(ex);
            }
        }

        private void OpenStream(string id)
        {
            frmBrowser frm = new frmBrowser();
        }
    }
}

Program.cs


using System;
using System.Collections.Generic;
using System.Linq;
using System.Windows.Forms;

namespace WindowsFormsApplication3
{
    static class Program
    {
        /// <summary>
        /// The main entry point for the application.
        /// </summary>
        [STAThread]
        static void Main()
        {
            Application.EnableVisualStyles();
            Application.SetCompatibleTextRenderingDefault(false);
            Application.Run(new Form1());
        }
    }

File: http://www.mediafire.com/?ef958apbjgn369b

I condensed everything from the original project to this secondary project to try and weed out the problem, but I can't figure out how to solve it.

There is C# function that lets u send mouse/keyboard inputs to other programs, as for your problem, there are few methods to detect default browser, and after u do that u can pass website with javascript edit:

using System;
using System.Diagnostics;

......
Process _browser = new Process();
switch(...)
{
......
// Lets say u implant each browser support and somehow u identify browser as Mozila:
         case Mozila:
         {
                  _browser.StartInfo.FileName   = "mozila.exe"; // lets assume, but through methods that read default browser's location u can just pass that(This is file path i believe)
                 _browser.StartInfo.Arguments = "\"www.own3d.tv............/20498120841048&<Java script for playnow>"\";
         }
}
_browser.Start();
...........
now u can send keys to process and therefore make it full screen, i think keys are passed as keyboard inputs and therefore ActionScript should not throw anything.

defnotGeorge

United States80 Posts

November 01 2011 01:10 GMT

#1830

"The best way to celebrate Halloween is by writing scary code."

DanceSC

United States751 Posts

November 01 2011 01:19 GMT

#1831

you.dead = true;
you.rot();
for(int i=0; i < allYourFriends.length; i++){
allYourFriends[i].danceOnYourGrave();
}
from a game lol

Craton

United States17303 Posts

November 01 2011 01:22 GMT

#1832

The current implementation I'm using is to just use a WebBrowser control, rather than dealing with determining the browser, trying to strip it to a minimal view, and making sure its maximized. Much easier to just deal with the form.

I came across the Invoke requirement in some of my googling, but didn't know how to apply it. I'll give it a try in a bit.

frogmelter

United States971 Posts

November 02 2011 23:04 GMT

#1833

Does anyone know how to pass a vector as an argument to a pthread in C++?

Thanks in advance!

This is what a have so far [well, parts of what I have. I think this is all the relevant information], error message is "‘void*’ is not a pointer-to-object type" on line "vector<string> wtf = *url;"


static void *thread_func(void *url)
{
	vector<string> wtf = *url;
              //Print out the vector
	for (vector<string>::iterator i = wtf.begin(); i != wtf.end(); ++i)
 			{
     	                            cout << *i << endl;
 			}
}

int main()
{
....
  vector<string> wtf;
  for(int i=0; i< NUMT; i++) 
  {
  error = pthread_create(&tid[i], NULL, thread_func, (void *)&wtf);
  }
}

SRBNikola

Serbia191 Posts

November 02 2011 23:26 GMT

#1834

On November 03 2011 08:04 frogmelter wrote:
Does anyone know how to pass a vector as an argument to a pthread in C++?

Thanks in advance!

This is what a have so far [well, parts of what I have. I think this is all the relevant information], error message is "‘void*’ is not a pointer-to-object type"


static void *thread_func(void *url)
{
	vector<string> wtf = *url;
              //Print out the vector
	for (vector<string>::iterator i = wtf.begin(); i != wtf.end(); ++i)
 			{
     	                            cout << *i << endl;
 			}
}

int main()
{
....
  vector<string> wtf;
  for(int i=0; i< NUMT; i++) 
  {
  error = pthread_create(&tid[i], NULL, thread_func, (void *)&wtf);
  }
}

Try accessing vector as an array? Maybe some foreach wrapper could help(or for -> with itr?)?

frogmelter

United States971 Posts

November 02 2011 23:38 GMT

#1835

On November 03 2011 08:26 SRBNikola wrote:

Show nested quote +


static void *thread_func(void *url)
{
	vector<string> wtf = *url;
              //Print out the vector
	for (vector<string>::iterator i = wtf.begin(); i != wtf.end(); ++i)
 			{
     	                            cout << *i << endl;
 			}
}

int main()
{
....
  vector<string> wtf;
  for(int i=0; i< NUMT; i++) 
  {
  error = pthread_create(&tid[i], NULL, thread_func, (void *)&wtf);
  }
}

Try accessing vector as an array? Maybe some foreach wrapper could help(or for -> with itr?)?

Sorry I forgot to mention - It errors out at the line "vector<string> wtf = *url;"

I tested the print out in the main thread and it works, so I don't think that is the problem

razzloss

Finland4 Posts

November 02 2011 23:58 GMT

#1836

Casting wtf to void* in pthread_create is unnecessary. However you do need to cast the void* back to vector<string>* in thread_func.

Then you'll just have to hope that the wtf in main stays alive long enough for the thread_func to make a copy of it, or use something like semaphores to signal between the threads that the wtf has been safely copied.

SRBNikola

Serbia191 Posts

November 03 2011 00:45 GMT

#1837

On November 03 2011 08:38 frogmelter wrote:

Show nested quote +

Sorry I forgot to mention - It errors out at the line "vector<string> wtf = *url;"

I tested the print out in the main thread and it works, so I don't think that is the problem

I think thats illegal in C++, what are u trying to do?

frogmelter

United States971 Posts

November 03 2011 03:31 GMT

#1838

Ahhh I got it

vector<string> *vecPtr = (vector<string>*)url;
for (vector<string>::iterator i = vecPtr->begin(); i != vecPtr->end();++i)
{
cout << *i << endl;
}

It was throwing an error before because it said that vecPtr had no class member called begin. But then I realized that it was a pointer to a vector, rather than the vector itself

SRBNikola

Serbia191 Posts

November 03 2011 09:42 GMT

#1839

On November 03 2011 12:31 frogmelter wrote:
Ahhh I got it

vector<string> *vecPtr = (vector<string>*)url;
for (vector<string>::iterator i = vecPtr->begin(); i != vecPtr->end();++i)
{
cout << *i << endl;
}

It was throwing an error before because it said that vecPtr had no class member called begin. But then I realized that it was a pointer to a vector, rather than the vector itself

Why don't you pass vector<string>* as argument of function instead of void* ?

frogmelter

United States971 Posts

November 03 2011 18:47 GMT

#1840

On November 03 2011 18:42 SRBNikola wrote:

Show nested quote +

Why don't you pass vector<string>* as argument of function instead of void* ?

Arguments passed to pthreads must be typecasted to a void pointer. That argument can't pass more than 4 bytes, so the only way it works is to typecast it into a void pointer. I just had trouble getting it back into a format that I could read.

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