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Hi, there... how do you assign events to particular keys on the keyboa

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Hi, there... how do you assign events to particular keys on the keyboa
dreambaff0
28 Feb, 2008 - 09:51 AM
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How do you assign a key on the keyboard, for example A, on a program based on the c++ language?(Example press esc to quit.)
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bodom658
RE: Hi, There... How Do You Assign Events To Particular Keys On The Keyboa
28 Feb, 2008 - 10:39 AM
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If you are running windows, you can do something like this:

cpp

#include<windows.h>

void main(){

          short esc;

while(!esc){          
          esc = GetAsyncKeyState( VK_ESCAPE );
}


This post has been edited by bodom658: 28 Feb, 2008 - 10:39 AM
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dreambaff0
RE: Hi, There... How Do You Assign Events To Particular Keys On The Keyboa
3 Mar, 2008 - 07:28 AM
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It says that the main function has an error, and therefor I can't compile the file.
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letthecolorsrumble
RE: Hi, There... How Do You Assign Events To Particular Keys On The Keyboa
3 Mar, 2008 - 07:46 AM
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Try posting some of your code so we can be more helpful.

This post has been edited by letthecolorsrumble: 3 Mar, 2008 - 07:56 AM
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letthecolorsrumble
RE: Hi, There... How Do You Assign Events To Particular Keys On The Keyboa
3 Mar, 2008 - 08:02 AM
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cpp

#include <windows.h>  


void main(){  
     short  esc=0;
	 
	 while(!esc){            
		esc = GetAsyncKeyState( VK_ESCAPE );  
	 } 
}


This should work for you, bodom658 missed to initialize esc to zero and a } to end main(); . Not a big deal. wink2.gif
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dreambaff0
RE: Hi, There... How Do You Assign Events To Particular Keys On The Keyboa
5 Mar, 2008 - 02:35 AM
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QUOTE(letthecolorsrumble @ 3 Mar, 2008 - 09:02 AM) *

cpp

#include <windows.h>  


void main(){  
     short  esc=0;
	 
	 while(!esc){            
		esc = GetAsyncKeyState( VK_ESCAPE );  
	 } 
}


This should work for you, bodom658 missed to initialize esc to zero and a } to end main(); . Not a big deal. wink2.gif
Thanks, letthecoloursrumble.
So what you did is assign the variable esc a value of zero and then apointed the key escape to that variable. My question is now, if I wanted to change the key esc to another key, for instance q, I should write:
esc = GetAsyncKeyState( VK_q )?
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letthecolorsrumble
RE: Hi, There... How Do You Assign Events To Particular Keys On The Keyboa
5 Mar, 2008 - 04:21 AM
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cpp

#include <windows.h>  
#include <iostream>
using namespace std;
int main(){  

     short  esc=0;
	 
	 while(!esc){
		cout<<"Waiting"<<endl;
		esc = GetAsyncKeyState( 'Q' );  
	 }

	 return 0;
}


So which every alphabet you want to detect, you just need to change the code accordingly, but they have to be in 'UPPERCASE'. Test it with different case and you will learn smile.gif
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dreambaff0
RE: Hi, There... How Do You Assign Events To Particular Keys On The Keyboa
5 Mar, 2008 - 04:42 AM
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Thanks...

LAst qustion and I will leave you alone... (Just to hunt you down on another matter, ;-))

If i want to trigger a function to work on taht I just need to state that bit of code and initialise the if statement wthin the while loop, yes?
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letthecolorsrumble
RE: Hi, There... How Do You Assign Events To Particular Keys On The Keyboa
5 Mar, 2008 - 04:48 AM
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Yes that is the way to do it! Happy Coding! smile.gif
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dreambaff0
RE: Hi, There... How Do You Assign Events To Particular Keys On The Keyboa
5 Mar, 2008 - 04:56 AM
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QUOTE(letthecolorsrumble @ 5 Mar, 2008 - 05:48 AM) *

Yes that is the way to do it! Happy Coding! smile.gif
Thanks a lot, you are a life saver... icon_up.gif

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letthecolorsrumble
RE: Hi, There... How Do You Assign Events To Particular Keys On The Keyboa
5 Mar, 2008 - 05:10 AM
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I didn't know your life was at risk wink2.gif
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bhandari
RE: Hi, There... How Do You Assign Events To Particular Keys On The Keyboa
5 Mar, 2008 - 05:26 AM
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spread the word </DIC>
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