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dotnet compact framework : Accessing display controls programmatically
I have run into a problem. The environment that we are working in is very noisy and the audio sounds that the unit makes are not loud enough to be heard. We have decided that we would try to use visual signals when an action has been reformed, but we are having difficulty accessing the display controls programmatically. Is there a way to: 1. Control the backlight intensity 2. Or possibly be able to flash the screen off and on. 3. Or possible invert the display colors. 4. Other options? -- Daniel Borras
1. Up to the device OEM -- ask Symbol.
2. Again, up to the OEM. 3. You might be able to do this for your entire application, although probably not for everything. 4. What type of actions are we talking about? Does the user access the desktop? If not, you can do virtually anything simply by redrawing your window contents differently. Paul T. [quoted text, click to view] "dborras" <dborras@discussions.microsoft.com> wrote in message news:49C6B26E-7FD7-40AB-A70E-F1F886AC592F@microsoft.com... > I'm working on a quality control application using your Symbol 8800 unit, > and > I have run into a problem. The environment that we are working in is very > noisy and the audio sounds that the unit makes are not loud enough to be > heard. We have decided that we would try to use visual signals when an > action has been reformed, but we are having difficulty accessing the > display > controls programmatically. > > Is there a way to: > 1. Control the backlight intensity > 2. Or possibly be able to flash the screen off and on. > 3. Or possible invert the display colors. > 4. Other options? > > -- > Daniel Borras > Programmer / Anlsyst
Thank you for the suggestions.
I have tried several solutions such as redrawing the screen color, showing a message, and displaying a count down number. But user is busy handling and scanning the product and not paying attention to the screen, so none of these approaches have works well. Only after everything is scanned do they look at the screen. What I need is to somehow catch there attention for a moment to let them know that a scan was successful. An audio sound works the best, but not in this situation. That is why I thought that a flash of the backlight might work. Daniel Borras Programmer / Analyst Cal-Pak Systems Inc. [quoted text, click to view] "Paul G. Tobey [eMVP]" wrote:
> 1. Up to the device OEM -- ask Symbol. > 2. Again, up to the OEM. > 3. You might be able to do this for your entire application, although > probably not for everything. > 4. What type of actions are we talking about? Does the user access the > desktop? If not, you can do virtually anything simply by redrawing your > window contents differently. > > Paul T. > > "dborras" <dborras@discussions.microsoft.com> wrote in message > news:49C6B26E-7FD7-40AB-A70E-F1F886AC592F@microsoft.com... > > I'm working on a quality control application using your Symbol 8800 unit, > > and > > I have run into a problem. The environment that we are working in is very > > noisy and the audio sounds that the unit makes are not loud enough to be > > heard. We have decided that we would try to use visual signals when an > > action has been reformed, but we are having difficulty accessing the > > display > > controls programmatically. > > > > Is there a way to: > > 1. Control the backlight intensity > > 2. Or possibly be able to flash the screen off and on. > > 3. Or possible invert the display colors. > > 4. Other options? > > > > -- > > Daniel Borras > > Programmer / Anlsyst > >
I'm working that angle to, even though the Symbol 8800 does not have an
external audio jack. I have a call into the Symbol support to see if there is a way to retrieve the audio signal from the serial connector or from another port. It’s a long shot but I thought I would try. Dan B. [quoted text, click to view] "Paul G. Tobey [eMVP]" wrote:
> If they don't look at the display, anything you do to the display is going > to be worthless. Maybe you need an amplified audio output or headphones... > > Paul T. > > "dborras" <dborras@discussions.microsoft.com> wrote in message > news:26C4320E-25C5-486D-B613-7C47436CAC70@microsoft.com... > > Thank you for the suggestions. > > I have tried several solutions such as redrawing the screen color, showing > > a > > message, and displaying a count down number. But user is busy handling > > and > > scanning the product and not paying attention to the screen, so none of > > these > > approaches have works well. Only after everything is scanned do they look > > at > > the screen. What I need is to somehow catch there attention for a moment > > to > > let them know that a scan was successful. An audio sound works the best, > > but > > not in this situation. That is why I thought that a flash of the > > backlight > > might work. > > > > Daniel Borras > > Programmer / Analyst > > Cal-Pak Systems Inc. > > > > "Paul G. Tobey [eMVP]" wrote: > > > >> 1. Up to the device OEM -- ask Symbol. > >> 2. Again, up to the OEM. > >> 3. You might be able to do this for your entire application, although > >> probably not for everything. > >> 4. What type of actions are we talking about? Does the user access the > >> desktop? If not, you can do virtually anything simply by redrawing your > >> window contents differently. > >> > >> Paul T. > >> > >> "dborras" <dborras@discussions.microsoft.com> wrote in message > >> news:49C6B26E-7FD7-40AB-A70E-F1F886AC592F@microsoft.com... > >> > I'm working on a quality control application using your Symbol 8800 > >> > unit, > >> > and > >> > I have run into a problem. The environment that we are working in is > >> > very > >> > noisy and the audio sounds that the unit makes are not loud enough to > >> > be > >> > heard. We have decided that we would try to use visual signals when an > >> > action has been reformed, but we are having difficulty accessing the > >> > display > >> > controls programmatically. > >> > > >> > Is there a way to: > >> > 1. Control the backlight intensity > >> > 2. Or possibly be able to flash the screen off and on. > >> > 3. Or possible invert the display colors. > >> > 4. Other options? > >> > > >> > -- > >> > Daniel Borras > >> > Programmer / Anlsyst > >> > >> > >> > >
If they don't look at the display, anything you do to the display is going
to be worthless. Maybe you need an amplified audio output or headphones... Paul T. [quoted text, click to view] "dborras" <dborras@discussions.microsoft.com> wrote in message news:26C4320E-25C5-486D-B613-7C47436CAC70@microsoft.com... > Thank you for the suggestions. > I have tried several solutions such as redrawing the screen color, showing > a > message, and displaying a count down number. But user is busy handling > and > scanning the product and not paying attention to the screen, so none of > these > approaches have works well. Only after everything is scanned do they look > at > the screen. What I need is to somehow catch there attention for a moment > to > let them know that a scan was successful. An audio sound works the best, > but > not in this situation. That is why I thought that a flash of the > backlight > might work. > > Daniel Borras > Programmer / Analyst > Cal-Pak Systems Inc. > > "Paul G. Tobey [eMVP]" wrote: > >> 1. Up to the device OEM -- ask Symbol. >> 2. Again, up to the OEM. >> 3. You might be able to do this for your entire application, although >> probably not for everything. >> 4. What type of actions are we talking about? Does the user access the >> desktop? If not, you can do virtually anything simply by redrawing your >> window contents differently. >> >> Paul T. >> >> "dborras" <dborras@discussions.microsoft.com> wrote in message >> news:49C6B26E-7FD7-40AB-A70E-F1F886AC592F@microsoft.com... >> > I'm working on a quality control application using your Symbol 8800 >> > unit, >> > and >> > I have run into a problem. The environment that we are working in is >> > very >> > noisy and the audio sounds that the unit makes are not loud enough to >> > be >> > heard. We have decided that we would try to use visual signals when an >> > action has been reformed, but we are having difficulty accessing the >> > display >> > controls programmatically. >> > >> > Is there a way to: >> > 1. Control the backlight intensity >> > 2. Or possibly be able to flash the screen off and on. >> > 3. Or possible invert the display colors. >> > 4. Other options? >> > >> > -- >> > Daniel Borras >> > Programmer / Anlsyst >> >> >>
Thank you for the info, since I was not sure if it was going to help in this
situation. I'm still not sure how I'm going to make it happen, but I receive some info, from another newsgroup, that I might be able to set the backlight intensity in the registry, if I could find the right command line. So I’m looking into the Symbol registry structure now. Dan B. [quoted text, click to view] "Daniel Moth" wrote:
> I know what you mean and have had a similar scenario. Flashing the screen > proved effective (it attracted attention when otherwise the user was not > paying attention to the display). > > In my scenario the event results in: Flashing the screen, two-tone beeping > sound, flash the LED and animate a small button. If you do something similar > I suggest you have a configuration page where the user can turn one or more > of these actions off. > > As to how you do it, like Paul said contact the OEM. All we have implemented > on our platform is an API to turn the screen brightness to half; I then turn > it on/off on a timer. > > Cheers > Daniel > -- > http://www.danielmoth.com/Blog/ > > > "dborras" <dborras@discussions.microsoft.com> wrote in message > news:26C4320E-25C5-486D-B613-7C47436CAC70@microsoft.com... > > Thank you for the suggestions. > > I have tried several solutions such as redrawing the screen color, showing > > a > > message, and displaying a count down number. But user is busy handling > > and > > scanning the product and not paying attention to the screen, so none of > > these > > approaches have works well. Only after everything is scanned do they look > > at > > the screen. What I need is to somehow catch there attention for a moment > > to > > let them know that a scan was successful. An audio sound works the best, > > but > > not in this situation. That is why I thought that a flash of the > > backlight > > might work. > > > > Daniel Borras > > Programmer / Analyst > > Cal-Pak Systems Inc. > > > > "Paul G. Tobey [eMVP]" wrote: > > > >> 1. Up to the device OEM -- ask Symbol. > >> 2. Again, up to the OEM. > >> 3. You might be able to do this for your entire application, although > >> probably not for everything. > >> 4. What type of actions are we talking about? Does the user access the > >> desktop? If not, you can do virtually anything simply by redrawing your > >> window contents differently. > >> > >> Paul T. > >> > >> "dborras" <dborras@discussions.microsoft.com> wrote in message > >> news:49C6B26E-7FD7-40AB-A70E-F1F886AC592F@microsoft.com... > >> > I'm working on a quality control application using your Symbol 8800 > >> > unit, > >> > and > >> > I have run into a problem. The environment that we are working in is > >> > very > >> > noisy and the audio sounds that the unit makes are not loud enough to > >> > be > >> > heard. We have decided that we would try to use visual signals when an > >> > action has been reformed, but we are having difficulty accessing the > >> > display > >> > controls programmatically. > >> > > >> > Is there a way to: > >> > 1. Control the backlight intensity > >> > 2. Or possibly be able to flash the screen off and on. > >> > 3. Or possible invert the display colors. > >> > 4. Other options? > >> > > >> > -- > >> > Daniel Borras > >> > Programmer / Anlsyst > >> > >> > >> > > >
I know what you mean and have had a similar scenario. Flashing the screen
proved effective (it attracted attention when otherwise the user was not paying attention to the display). In my scenario the event results in: Flashing the screen, two-tone beeping sound, flash the LED and animate a small button. If you do something similar I suggest you have a configuration page where the user can turn one or more of these actions off. As to how you do it, like Paul said contact the OEM. All we have implemented on our platform is an API to turn the screen brightness to half; I then turn it on/off on a timer. Cheers Daniel -- http://www.danielmoth.com/Blog/ [quoted text, click to view] "dborras" <dborras@discussions.microsoft.com> wrote in message news:26C4320E-25C5-486D-B613-7C47436CAC70@microsoft.com... > Thank you for the suggestions. > I have tried several solutions such as redrawing the screen color, showing > a > message, and displaying a count down number. But user is busy handling > and > scanning the product and not paying attention to the screen, so none of > these > approaches have works well. Only after everything is scanned do they look > at > the screen. What I need is to somehow catch there attention for a moment > to > let them know that a scan was successful. An audio sound works the best, > but > not in this situation. That is why I thought that a flash of the > backlight > might work. > > Daniel Borras > Programmer / Analyst > Cal-Pak Systems Inc. > > "Paul G. Tobey [eMVP]" wrote: > >> 1. Up to the device OEM -- ask Symbol. >> 2. Again, up to the OEM. >> 3. You might be able to do this for your entire application, although >> probably not for everything. >> 4. What type of actions are we talking about? Does the user access the >> desktop? If not, you can do virtually anything simply by redrawing your >> window contents differently. >> >> Paul T. >> >> "dborras" <dborras@discussions.microsoft.com> wrote in message >> news:49C6B26E-7FD7-40AB-A70E-F1F886AC592F@microsoft.com... >> > I'm working on a quality control application using your Symbol 8800 >> > unit, >> > and >> > I have run into a problem. The environment that we are working in is >> > very >> > noisy and the audio sounds that the unit makes are not loud enough to >> > be >> > heard. We have decided that we would try to use visual signals when an >> > action has been reformed, but we are having difficulty accessing the >> > display >> > controls programmatically. >> > >> > Is there a way to: >> > 1. Control the backlight intensity >> > 2. Or possibly be able to flash the screen off and on. >> > 3. Or possible invert the display colors. >> > 4. Other options? >> > >> > -- >> > Daniel Borras >> > Programmer / Anlsyst >> >> >>
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