Wait until keystroke is make...

Jul 9, 2011 at 6:59pm
dhj0001 (22)
How do you make a program pause until a keystroke is made. I know cin.ignore(1); or system("pause"); will make the program wait until return or enter is hit. But how do you make a program wait until ANY key is hit, and not display the key hit obviously. Is there a way to do this without having to use the a system command?

I'm using g++ compiler on windows 7 btw...
Last edited on Jul 9, 2011 at 7:00pm
Jul 9, 2011 at 9:28pm
rtzoeller (26)
1. Don't use system().
2. There isn't a good universal way to do this in a console that I know of. You may be able to get it to work using ncurses.
Jul 9, 2011 at 9:47pm
closed account (zwA4jE8b)
here is some code from duoas or disch, I cant remember.

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#include <iostream>
#include <string>
#include <windows.h>
using namespace std;

bool iskeypressed(DWORD timeout_ms )
  {
  return (WaitForSingleObject(GetStdHandle( STD_INPUT_HANDLE ),timeout_ms) == WAIT_OBJECT_0);
  }

int main()
  {
	  string name;
	  cout << "Please enter your name.";
	  while (!iskeypressed( 500 )){cout << ".";}
	  getline( cin, name );

	  cout << "Thank you, " << name << endl;
	  cin.get();
	  return 0;
  }
Edit & run on cpp.sh


The only catch is that you have to open the .exe from the console. At least I do using VS2010
Last edited on Jul 9, 2011 at 9:48pm
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