Win32 non blocking console input?
in [ASM]
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From: hutch-- on 28 Oct 2008 05:07 herbert, [quote] I want a program similar to the 16 bit choice.com. If you execute it with: choice32.exe 66 [/quote] So what the big deal, write a 32 bit console CHOICE.EXE and rename it CHOICE.COM, will work fine. Just set the return value in ExitProcess() to what you want on the timeout.
From: Herbert Kleebauer on 28 Oct 2008 11:48 Rod Pemberton wrote: > > > So either I need a read with a time-out (there is a SetCommTimeouts(), > > > but that doesn't work for the stdin handle) or a way to do a non blocking > > > test for keyboard input. WaitForSingleObject() waits for an event within > > > a given time-out. But when it returns before the time-out, you only know > > > that there was an event but not whether it was a keyboard event. And > > > if it wasn't a keyboard event and you call getc(), then the program > > > waits until you press a key without any time-out. Therefore, even with > > > WaitForSingleObject(), you have to use PeekConsoleInput() to inspect > > > the event and therefore WaitForSingleObject() isn't much better than > > > a sleep() (which I used in the posted code). > > Wow, that killed the conversation... Have you found a solution? I don't think there is an easier solution than PeekConsoleInput(). But I didn't much research. All I needed was a small program to include it within a batch program for automatic download a list of files over night from a file sharing web site (they insert a delay and input for non paying users).
From: Herbert Kleebauer on 28 Oct 2008 11:56 hutch-- wrote: > > herbert, > > [quote] > I want a program similar to the 16 bit choice.com. If you execute > it with: > > choice32.exe 66 > [/quote] > > So what the big deal, write a 32 bit console CHOICE.EXE and rename it > CHOICE.COM, will work fine. I don't want to rename it, CHOICE32.EXE is a good name. All I wanted was the source code for a (small as possible) CHOICE32.EXE. And I hopped, there would be a simpler way than using PeekConsoleInput(), but maybe there isn't. I really hope Microsoft will add 16 bit emulation for 64-bit Windows before it becomes the mainstream. I really don't understand the people at AMD. If I don't get 16 bit support, I don't need the x86 at all. If there is no backward compatibility for all the good old 16 bit code, then let's switch to something completely new. > Just set the return value in ExitProcess() to what you want on the > timeout. That's the way I did it.
From: Robert Redelmeier on 28 Oct 2008 13:17
Herbert Kleebauer <klee(a)unibwm.de> wrote in part: > I don't think there is an easier solution than PeekConsoleInput(). > But I didn't much research. All I needed was a small program to > include it within a batch program for automatic download a list of > files over night from a file sharing web site (they insert a delay > and input for non paying users). Sounds OK, but if you put it in a tight loop it could be a CPU hog. You may want to put a sleep() in there. -- Robert |