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+---- Thread: Question about _KeyDown (/showthread.php?tid=3039)
Question about _KeyDown - Kernelpanic - 09-16-2024
Why doesn't this work (program termination)?
Code: (Select All)
Dim As Integer zahl
Do
Input "Zahl: ", zahl
Loop Until _KeyDown(27) 'ESC
I found it here: https://qb64phoenix.com/forum/showthread.php?tid=3037&pid=28453#pid28453
RE: Question about _KeyDown - DSMan195276 - 09-16-2024
How are you trying to use it? "Input" blocks execution of the program at that point until the Input statement is done. Meaning, for the _keydown to trigger you need to be holding ESC down before hitting Enter to end the Input statement. Otherwise it just loops once and blocks on Input again before you can ever press ESC.
RE: Question about _KeyDown - TerryRitchie - 09-16-2024
DO
INPUT "Number: ", n!
LOOP UNTIL _KEYDOWN(27)
The loop above can never be terminated because in order to leave the INPUT statement you must press ENTER.
DO
INPUT "Number: ", n!
LOOP UNTIL n! = 0
The loop above can terminate because it relies on the value of n!
RE: Question about _KeyDown - Kernelpanic - 09-16-2024
Thanks for the answers!
DSMan195276, yes, that's right! It would be a good notice in the wiki for KeyDown
Terry, I know that one can end the loop in another way, but this about KeyDown was unknown me.
RE: Question about _KeyDown - Pete - 09-16-2024
Oh just write a custom keyboard input routine you lazy varmint!
or...
Code: (Select All)
Do
Input a
Sleep 1
Loop Until _KeyDown(27) Now you don't need no stinkin' null value... but ya gotta be quick!
Pete
RE: Question about _KeyDown - TerryRitchie - 09-16-2024
(09-16-2024, 07:53 PM)Pete Wrote: Oh just write a custom keyboard input routine you lazy varmint!It looks like you just won the award you were fretting about in another post.
or...
Code: (Select All)Do
Input a
Sleep 1
Loop Until _KeyDown(27)
Now you don't need no stinkin' null value... but ya gotta be quick!
Pete
(09-16-2024, 07:44 PM)Kernelpanic Wrote: Thanks for the answers!In lesson 7 of the tutorial I cover all the different methods of using keyboard input.
DSMan195276, yes, that's right! It would be a good notice in the wiki for KeyDown
Terry, I know that one can end the loop in another way, but this about KeyDown was unknown me.
https://www.qb64tutorial.com/lesson7
And then in lesson 21 I cover the _DEVICES and _BUTTON statements and how they can be used as keyboard inputs as well.
https://www.qb64tutorial.com/lesson21
When you get a chance check them out. Lots of good stuff in there.
RE: Question about _KeyDown - Kernelpanic - 09-16-2024
Quote:Oh just write a custom keyboard input routine you lazy varmint!Good too. But quickly . . . There is strength in calmness! - Hmm, was that Platon or Caesar or Kant? Maybe it was Taylor Swift.
Code: (Select All)
Do
Input a
Sleep 10
Loop Until _KeyDown(27)
RE: Question about _KeyDown - Pete - 09-16-2024
10 seconds to make up your mind? No wonder the Germans lost WWII!
Now if you will excuse me, Steve's on his way over to take my award photo!
Pete