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Questions - screen

Why PPI reported by Delphi is different from the calculated one?

I use Delphi 10.3 Rio, and need to know the screen PixelsPerInch ratio to scale my application accordingly. Calculating with the formula, my screen has 142 ppi. (Real values are: 15.5" diagonal a...
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Marus Gradinaru

delphi

screen

delphi-10.3-rio

ppi

Votes: 0

Answers: 1

Latest Answer

Operating system PPI There is no bug and Delphi returns proper value in PixelsPerInch. PPI OS will return for the purpose of scaling your application is not the actual PPI value of the actual display ...
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Dalija Prasnikar

`fbcon/cursor_blink` permissions reset at reboot

Context I need to stop the cursor from blinking on an external screen of my raspberry-pi in order to display a home-made interface on /dev/fb0. For this purpose I created a group cursor_blink in which...
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vinalti

linux

raspberry-pi

filesystems

screen

framebuffer

Votes: 0

Answers: 1

Latest Answer

For the moment the solution I found is to add a crontab task to correct the permissions at boot: crontab -e # ... # add this line at the end of the file : @reboot chown root:cursor_blink /sys/class/...
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vinalti

How to get the display's dimensions on whichever screen a C++ program is running on (without needing to download libraries)?

I found this answer, with external libraries, but I just want to know, is there any way I can get a monitor's dimensions using default libraries in C/C++? Also, I came to know that the headers "W...
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Sam Francis

c++

terminal

c++17

screen

Votes: 0

Answers: 0

PowerShell FFMPEG Image Extraction direct to System Drawing Image

I've been racking my brain for the last 48 hours... I rarely ask a question, but I'm at my breaking point. Hopefully the experts can help. Problem: I need to extract an image from a video (not save th...
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Jukari

powershell

ffmpeg

stream

screen

screenshot

Votes: 0

Answers: 1

Latest Answer

I Finally Figured it out.... Here is the answer: $ffmpeg = "C:\ffmpeg\bin\ffmpeg.exe" $input = "C:\test.mp4" $image = & $ffmpeg -i $input -ss 3 -vframes 1 -c:v bmp -f image2pip...
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Jukari

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