| Author |
Message |
|
|
Post subject: Pop Up Dialog Box
 Posted: Nov 22, 2006 - 04:17 PM
|
|
Active Member
Joined: Feb 16, 2006
Posts: 23
|
|
I was wondering if there is an easy way of creating a PopUp Dialog Box in a QNX Project using PhAB.
What I need is a PopUp Dialog to appear on screen when a certain event or alarm is raised in my program.
I figure I can build the whole thing from code and dynamically generate the dialog box, but I was wondering if there is an option in PhAB for this kind of action.
Thanks,
Dan... |
|
|
| |
|
|
|
 |
|
|
|
Post subject:
Posted: Nov 27, 2006 - 03:31 PM
|
|
Active Member
Joined: Nov 05, 2003
Posts: 83
Location: Texas
|
|
Sure... sorta. The dialog itself can be generated in PhAB. The event itself is a little trickier, but basically drop a timer on your base window and check for the event in the timer's activate callback. When the event happens call ApCreateModule(). In PhAB, make sure you create a link (Project -> Internal Links) to define the location & setup function.
To summarize:
In PhAB, create dialog and it's internal link, and create a timer on the base window.
In code, watch for the event in the timer callback and call ApCreateModule().
That's it.
-James Ingraham
Sage Automation, Inc. |
|
|
| |
|
|
|
|
|
|
|
Post subject:
Posted: Nov 30, 2006 - 04:08 PM
|
|
Active Member
Joined: Feb 16, 2006
Posts: 23
|
|
I've modified your solution a little.  Instead of having a timer cicle every x seconds, I've setup signal handlers that receive signals when a pop-up is required. Signal hanlders work great, but I'm crashing when I call ApCreateModule (ABM_Stuff, NULL, NULL). It sucks because the debugger doesn't seem to be able to step through the signal handler.
Ah well, can't have all I want I guess. I'll keep on working on this signal stuff, but if I start running around in circles, I may just use a timer afterall! 
Thanks!
Dan... |
|
|
| |
|
|
|
|
|
|
|
Post subject:
Posted: Dec 01, 2006 - 05:19 PM
|
|
Active Member
Joined: Jun 28, 2005
Posts: 12
|
|
When you say 'signal handler' are you using PtAppAddSignalProc() or a raw signal handler (i.e. signal() and friends)?
Calling into the photon libraries from within a raw signal handler would not work - use PtAppAddSignalProc to get photon/phab friendly handlers. |
|
|
| |
|
|
|
|
|
|
|
Post subject:
Posted: Dec 06, 2006 - 03:31 PM
|
|
Active Member
Joined: Feb 16, 2006
Posts: 23
|
|
I've been using signal() for a while, and everything was working fine, until I attempted to call ApCreateModule using my raw signal handler.
I've set the whole thing up with a timer, but didnt know about PtAppAddSignalProc()... I'll check it out.
Thanks |
|
|
| |
|
|
|
|
|
|
|
Post subject:
Posted: Dec 06, 2006 - 07:39 PM
|
|
Active Member
Joined: Feb 16, 2006
Posts: 23
|
|
Ok, step two... I want the popup box to beep when it appears. Should be simple, yes?
I basically added printf("\a"); before I call ApCreateModule(), but no sound... So I figure I did something wrong, and when I close the application I hear a beep.
So I try different things, moving the printf around, adding another, adding text after \a... nothing seems to get the system to beep until I shut down the app.
Any ideas? |
|
|
| |
|
|
|
|
|
|
|
Post subject:
Posted: Dec 07, 2006 - 03:40 PM
|
|
Active Member
Joined: Nov 05, 2003
Posts: 83
Location: Texas
|
|
"...nothing seems to get the system to beep until I shut down the app."
You're not going to believe me, but this code should work:
printf("\a\n");
Alternately:
printf("\a");
fflush(stdout);
-James Ingraham
Sage Automation, Inc. |
|
|
| |
|
|
|
|
|
|
|
Post subject:
Posted: Dec 11, 2006 - 08:58 PM
|
|
Active Member
Joined: Feb 16, 2006
Posts: 23
|
|
Hehe,
yea, a coworker explained that prinf wont print until it hits a \n or is full.
I guess this is part of those embarrassing little things that you learn while doing...
Thanks,
Dan... |
|
|
| |
|
|
|
|
|
|
|
Post subject:
Posted: Apr 18, 2007 - 06:00 PM
|
|
Active Member
Joined: Feb 16, 2006
Posts: 23
|
|
|
dman3021 wrote:
Ok, step two... I want the popup box to beep when it appears.
Well, turns out the /a works fine, as long as a terminal window is open. If I close the terminal window I've started the app in, I no longer hear beeps.
So now I figure I might want to play a wave file instead of just a simple beep, and was wondering if anyone knew if there is an easy way to do so?
Thanks,
Dan... |
|
|
| |
|
|
|
|
|
|
|
Post subject:
Posted: Apr 18, 2007 - 09:23 PM
|
|
QNX Master
Joined: Sep 01, 2002
Posts: 2897
|
|
| Tip of the day: puts() is MUCH faster then printf() |
|
|
| |
|
|
|
|
|
|
|
Post subject:
Posted: Apr 18, 2007 - 09:32 PM
|
|
QNX Master
Joined: Jun 25, 2003
Posts: 1095
|
|
It's not printf that is the problem, but rather the behavior of stdout.
A friendly snipe at Mario: Do you think you will hear the beep faster if you send the "\a\n" via puts rather than printf,  . |
|
|
| |
|
|
|
|
|
|
|
Post subject:
Posted: Apr 19, 2007 - 02:42 PM
|
|
Active Member
Joined: Feb 16, 2006
Posts: 23
|
|
fp = fopen( "/dev/con1", "w" );
if( fp != NULL ) {
putc('\a', fp);
putc('\n', fp);
fclose( fp );
}
So basically opening a stream to con1 and printing the beep character there works (as I've done with the above code).
Thanks for the push!
Dan... |
|
|
| |
|
|
|
|
|
|
|
Post subject:
Posted: Apr 19, 2007 - 03:44 PM
|
|
QNX Master
Joined: Sep 01, 2002
Posts: 2897
|
|
In that case you don't need the putc() because fclose will flush it for you.
Hey Mitch, lol! I jumped on the occasion to mention puts, because I recently wrote some benchmark program to evaluate performance of printf, sprintf, puts and their C++ counter part cout, strstream stringstream.
I was amazed to see that puts was almost 10 times faster then printf. That's understandable because puts doesn't have to parse the string to look for format (%...).
I was also surprised to see that cout was also faster the printf ( almost as fast a puts ) and for the same reason; no parsing. It however makes the code bigger, each value use in the cout expression results in a call.
strstream, stringstream also proved much faster then sprintf even if they perform memory allocation. |
|
|
| |
|
|
|
|
|
|
FAQ
Search
Register
Log in to check your private messages
Log in
