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#1
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Weird Quirk
My desktop PC (Intel i5 w 16 GB RAM) has two 1920x1080 displays. The
main display has a double height taskbar at the bottom. The secondary display is set to not display any taskbar. The secondary display shows the output of a C# program that is written to display sixteen 480x270 jpeg images in a 4x4 pattern thereby completely filling the 1920x1080 space on the monitor. This setup has been working perfectly for years. About three months ago, I noticed a short strip of pixels at the bottom where the background wallpaper was showing through. My eye sight is not good enough to be sure, but I think the strip is 3 pixels high. If I go into taskbar settings and and set it to display the task bar on both monitors, the strip goes away. (I would have expected the taskbar to show up, but it didn't. I then turn that feature back off and the strip is still gone. However, if I restart windows, the strip comes back until I toggle the taskbar setting again. Any ideas what would cause this? (Like I said, it started about 3 months ago under 1909, but I recently upgraded to 2004 and the same symptom is there. Installing the latest Intel graphics driver had no effect either.) Not a big deal, but I would love to understand the cause. Pat |
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#2
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Weird Quirk
Pat wrote:
My eye sight is not good enough to be sure, but I think the strip is 3 pixels high. Use Magnifier. You can zoom WAY in by holding control plus alt and using the scroll wheel. |
#3
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Weird Quirk
Pat wrote:
My desktop PC (Intel i5 w 16 GB RAM) has two 1920x1080 displays. The main display has a double height taskbar at the bottom. The secondary display is set to not display any taskbar. The secondary display shows the output of a C# program that is written to display sixteen 480x270 jpeg images in a 4x4 pattern thereby completely filling the 1920x1080 space on the monitor. This setup has been working perfectly for years. About three months ago, I noticed a short strip of pixels at the bottom where the background wallpaper was showing through. My eye sight is not good enough to be sure, but I think the strip is 3 pixels high. If I go into taskbar settings and and set it to display the task bar on both monitors, the strip goes away. (I would have expected the taskbar to show up, but it didn't. I then turn that feature back off and the strip is still gone.) However, if I restart windows, the strip comes back until I toggle the taskbar setting again. Any ideas what would cause this? (Like I said, it started about 3 months ago under 1909, but I recently upgraded to 2004 and the same symptom is there. Installing the latest Intel graphics driver had no effect either.) Not a big deal, but I would love to understand the cause. Pat You can use Winlister to get a list of decorations on the screen (windows and parts of windows), and they have dimensions listed. Maybe you can gather more info from that, as to what has changed. https://i.postimg.cc/xCF9Xh6j/winlister.gif https://www.nirsoft.net/utils/winlister.html https://www.nirsoft.net/utils/winlister-x64.zip The monitor resolution 1920x1080 is unlikely to have changed. Horizontal is divisible by 8, vertical is divisible by 2. An error involving the number 3 is unlikely to related to a resolution change. Paul |
#4
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Weird Quirk
On Sun, 23 Aug 2020 08:38:58 -0400, Paul
wrote: Pat wrote: My desktop PC (Intel i5 w 16 GB RAM) has two 1920x1080 displays. The main display has a double height taskbar at the bottom. The secondary display is set to not display any taskbar. The secondary display shows the output of a C# program that is written to display sixteen 480x270 jpeg images in a 4x4 pattern thereby completely filling the 1920x1080 space on the monitor. This setup has been working perfectly for years. About three months ago, I noticed a short strip of pixels at the bottom where the background wallpaper was showing through. My eye sight is not good enough to be sure, but I think the strip is 3 pixels high. If I go into taskbar settings and and set it to display the task bar on both monitors, the strip goes away. (I would have expected the taskbar to show up, but it didn't. I then turn that feature back off and the strip is still gone.) However, if I restart windows, the strip comes back until I toggle the taskbar setting again. Any ideas what would cause this? (Like I said, it started about 3 months ago under 1909, but I recently upgraded to 2004 and the same symptom is there. Installing the latest Intel graphics driver had no effect either.) Not a big deal, but I would love to understand the cause. Pat You can use Winlister to get a list of decorations on the screen (windows and parts of windows), and they have dimensions listed. Maybe you can gather more info from that, as to what has changed. https://i.postimg.cc/xCF9Xh6j/winlister.gif https://www.nirsoft.net/utils/winlister.html https://www.nirsoft.net/utils/winlister-x64.zip The monitor resolution 1920x1080 is unlikely to have changed. Horizontal is divisible by 8, vertical is divisible by 2. An error involving the number 3 is unlikely to related to a resolution change. Paul Thank you for the WinLister suggestion. (Note that my secondary monitor is to the left of my main monitor, so my full disktop is 3840x1080 but is located at -1920 to +1919.) After a restart, WinLister tells me my C# program is located at -1920,0 and its size is 1920x1080. That is what I want, but the 3 pixel strip is showing at the bottom of the screen. After I toggle the "show taskbar on all displays" option, the strip disappears and Winlister tells me my program is now located at -1920, 3. There's that wierd 3 number again. I'm out of time right now, but I'll look at it some more later. Thanks for your help. |
#5
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Weird Quirk
On Sun, 23 Aug 2020 10:50:13 -0400, Pat
wrote: On Sun, 23 Aug 2020 08:38:58 -0400, Paul wrote: Pat wrote: My desktop PC (Intel i5 w 16 GB RAM) has two 1920x1080 displays. The main display has a double height taskbar at the bottom. The secondary display is set to not display any taskbar. The secondary display shows the output of a C# program that is written to display sixteen 480x270 jpeg images in a 4x4 pattern thereby completely filling the 1920x1080 space on the monitor. This setup has been working perfectly for years. About three months ago, I noticed a short strip of pixels at the bottom where the background wallpaper was showing through. My eye sight is not good enough to be sure, but I think the strip is 3 pixels high. If I go into taskbar settings and and set it to display the task bar on both monitors, the strip goes away. (I would have expected the taskbar to show up, but it didn't. I then turn that feature back off and the strip is still gone.) However, if I restart windows, the strip comes back until I toggle the taskbar setting again. Any ideas what would cause this? (Like I said, it started about 3 months ago under 1909, but I recently upgraded to 2004 and the same symptom is there. Installing the latest Intel graphics driver had no effect either.) Not a big deal, but I would love to understand the cause. Pat You can use Winlister to get a list of decorations on the screen (windows and parts of windows), and they have dimensions listed. Maybe you can gather more info from that, as to what has changed. https://i.postimg.cc/xCF9Xh6j/winlister.gif https://www.nirsoft.net/utils/winlister.html https://www.nirsoft.net/utils/winlister-x64.zip The monitor resolution 1920x1080 is unlikely to have changed. Horizontal is divisible by 8, vertical is divisible by 2. An error involving the number 3 is unlikely to related to a resolution change. Paul Thank you for the WinLister suggestion. (Note that my secondary monitor is to the left of my main monitor, so my full disktop is 3840x1080 but is located at -1920 to +1919.) After a restart, WinLister tells me my C# program is located at -1920,0 and its size is 1920x1080. That is what I want, but the 3 pixel strip is showing at the bottom of the screen. After I toggle the "show taskbar on all displays" option, the strip disappears and Winlister tells me my program is now located at -1920, 3. There's that wierd 3 number again. I'm out of time right now, but I'll look at it some more later. Thanks for your help. Update to Paul: I resolved the symptom by recompiling my C# program with the windows state set to Maximize. In other words, it is now running "full screen" on the 1920x1080 monitor instead of being a 1920x1080 window. Maybe there was a 3 pixel margin being drawn, but why was it transparent and why only at the bottom. I guess that will remain a mystery. Regardless, thanks for you help. Pat |
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