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-	[[Category:Initialization]]	+	[[Category:functions]]
-	=== Definition ===	+	[[Category:programinteraction]]
-	----	+
-	'''key();''' is a [[function]] that needs a [[constant]] or a [[variable]] with the scancode	+
-	or the scancode itself for the key you want to check.	+
-	The [[variable]] [[ascii]] shows the scancode of the key currently pressed.	+
-	This [[function]] returns 0 or [[false]] if the key is not pressed, 1 or [[true]] if it is pressed.	+
-	The [[constant]]s for the keys commonly start with _ + the key.	+	==Definition==
-	So if you want to check for the letter 'a' to be pressed, you would pass _a to '''key();'''.	+	'''INT''' Key( <'''INT''' scancode> )
-	You can find a list of the [[constant]]s and scancodes here.	+	Checks if a certain key is being pressed.
-	=== Example ===	+	== Parameters ==
		+	{|
		+	| '''INT''' scancode || - The [[scancodes|scancode]] of the key to be checked.
		+	|}
		+
		+	== Returns ==
		+	'''INT''' : [[true]]/[[false]]: Whether the key is being pressed.
		+
		+	== Notes ==
		+	Take a look at the [[scancodes]] for a complete list.
		+
		+	== Example ==
	<pre>		<pre>
-	program input_test;	+	Program input_test;
-	begin	+	Begin
-	set_mode(320,240,16);	+
-	set_fps(60,0);	+
-	while( !key(_esc) )	+	While( !key(_esc) )
-	delete_text();	+	delete_text(ALL_TEXT);
-	if( key(_left) && !key(_right) )	+	if( key(_left) && !key(_right) )
-	write(0,160,120,4, "LEFT");	+	write(0,160,120,4, "LEFT");
-	end;	+	end;
-	if( key(_right) && !key(_left) )	+	if( key(_right) && !key(_left) )
-	write(0,160,120,4, "RIGHT");	+	write(0,160,120,4, "RIGHT");
-	end;	+	end;
-	frame;	+	frame;
-	end;	+
-	exit();	+	End;
-	end;	+
		+	exit();
		+
		+	End
	</pre>		</pre>
		+	Used in example: [[delete_text]](), [[write]](), [[exit]](), [[ALL_TEXT]]
		+
	This will output the words LEFT or RIGHT according to the keys you press,		This will output the words LEFT or RIGHT according to the keys you press,
	or it will quit the program once ESCAPE is pressed.		or it will quit the program once ESCAPE is pressed.
		+
		+	{{Funcbox
		+	| category=Programinteraction
		+	}}

---

Current revision

Contents 1 Definition 2 Parameters 3 Returns 4 Notes 5 Example

[edit] Definition

INT Key( <INT scancode> )

Checks if a certain key is being pressed.

[edit] Parameters

INT scancode

- The scancode of the key to be checked.

[edit] Returns

INT : true/false: Whether the key is being pressed.

[edit] Notes

Take a look at the scancodes for a complete list.

[edit] Example

Program input_test;
Begin

    While( !key(_esc) )

        delete_text(ALL_TEXT);

        if( key(_left) && !key(_right) )  
            write(0,160,120,4, "LEFT");
        end;
     
        if( key(_right) && !key(_left) ) 
            write(0,160,120,4, "RIGHT"); 
        end;

        frame;

    End;

    exit();

End

Used in example: delete_text(), write(), exit(), ALL_TEXT

This will output the words LEFT or RIGHT according to the keys you press, or it will quit the program once ESCAPE is pressed.

Programinteraction Functions

• Exit() • Getenv() • Key() • Move_window() • Set_fps() • Set_icon() • Set_mode() • Set_title() •