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Can Chromium features that are normally turned on via switches be turned on programatically after starting up?


Grouping child processes in node-webkit or atom/electronAtom Electron - Detect Dev Tools readyWhy does my Blink based browser play hide and seek?Starting Chromium with switches in file?Advanced GPU Control needed for browserwindowsnodeJS / Electron renders pages slower than ChromeIs there a keyboard shortcut to show or hide 'FPS meter' in Chromium versions 60+?Not allowed to load local resource - ElectronWhy is Chrome/Electron Devtools Perf showing almost nothing?Electron portable build not saving content locally






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0















Is there a way to use Chromium switches after starting it up, or must they be enabled on start up? For example, can switches be passed to the renderer processes, or just to the main process?



I want to turn on paint flashing in Chromium (actually in my Electron app which runs on top of Chromium).



Devtools has a checkbox that turns this on, but I want to be able to turn this on without devtools, and after the app has started.



I know there's a show-paint-rects flag I can use:



chrome.exe --show-paint-rects


In my Electron app, I would need to use app.commandLine.appendSwitch:



app.commandLine.appendSwitch("show-paint-rects");


I also found a ui-show-paint-rects flag that lives in something called the "compositor," but that may be irrelevant for me.



Both of these work, but since Chromium uses a multi-process architecture, I'm hoping that there's a way I can specify that switch, or otherwise, turn on a feature in one process and not have to specify it at startup.



Is there a way to do this in Chromium? (Would be ideal to do this in Electron, but I'm not counting on it)










share|improve this question






















  • depends. majority of flags are required to be set before whole choromium app instance starts, reason it only works via cli or electron's appendSwitch before app ready event.

    – OJ Kwon
    Mar 21 at 22:50











  • @OJKwon Yeah, I know that in general in depends, but I'm interested in turning on paint flashing after startup. Maybe I should make my question more specific...

    – pushkin
    Mar 21 at 22:56











  • you can safely assume it won't unless there is specific comment about some flag can be enabled after chromium app starts.

    – OJ Kwon
    Mar 22 at 1:34











  • @OJKwon Fair enough.. I was crossing my fingers

    – pushkin
    Mar 22 at 14:05

















0















Is there a way to use Chromium switches after starting it up, or must they be enabled on start up? For example, can switches be passed to the renderer processes, or just to the main process?



I want to turn on paint flashing in Chromium (actually in my Electron app which runs on top of Chromium).



Devtools has a checkbox that turns this on, but I want to be able to turn this on without devtools, and after the app has started.



I know there's a show-paint-rects flag I can use:



chrome.exe --show-paint-rects


In my Electron app, I would need to use app.commandLine.appendSwitch:



app.commandLine.appendSwitch("show-paint-rects");


I also found a ui-show-paint-rects flag that lives in something called the "compositor," but that may be irrelevant for me.



Both of these work, but since Chromium uses a multi-process architecture, I'm hoping that there's a way I can specify that switch, or otherwise, turn on a feature in one process and not have to specify it at startup.



Is there a way to do this in Chromium? (Would be ideal to do this in Electron, but I'm not counting on it)










share|improve this question






















  • depends. majority of flags are required to be set before whole choromium app instance starts, reason it only works via cli or electron's appendSwitch before app ready event.

    – OJ Kwon
    Mar 21 at 22:50











  • @OJKwon Yeah, I know that in general in depends, but I'm interested in turning on paint flashing after startup. Maybe I should make my question more specific...

    – pushkin
    Mar 21 at 22:56











  • you can safely assume it won't unless there is specific comment about some flag can be enabled after chromium app starts.

    – OJ Kwon
    Mar 22 at 1:34











  • @OJKwon Fair enough.. I was crossing my fingers

    – pushkin
    Mar 22 at 14:05













0












0








0








Is there a way to use Chromium switches after starting it up, or must they be enabled on start up? For example, can switches be passed to the renderer processes, or just to the main process?



I want to turn on paint flashing in Chromium (actually in my Electron app which runs on top of Chromium).



Devtools has a checkbox that turns this on, but I want to be able to turn this on without devtools, and after the app has started.



I know there's a show-paint-rects flag I can use:



chrome.exe --show-paint-rects


In my Electron app, I would need to use app.commandLine.appendSwitch:



app.commandLine.appendSwitch("show-paint-rects");


I also found a ui-show-paint-rects flag that lives in something called the "compositor," but that may be irrelevant for me.



Both of these work, but since Chromium uses a multi-process architecture, I'm hoping that there's a way I can specify that switch, or otherwise, turn on a feature in one process and not have to specify it at startup.



Is there a way to do this in Chromium? (Would be ideal to do this in Electron, but I'm not counting on it)










share|improve this question














Is there a way to use Chromium switches after starting it up, or must they be enabled on start up? For example, can switches be passed to the renderer processes, or just to the main process?



I want to turn on paint flashing in Chromium (actually in my Electron app which runs on top of Chromium).



Devtools has a checkbox that turns this on, but I want to be able to turn this on without devtools, and after the app has started.



I know there's a show-paint-rects flag I can use:



chrome.exe --show-paint-rects


In my Electron app, I would need to use app.commandLine.appendSwitch:



app.commandLine.appendSwitch("show-paint-rects");


I also found a ui-show-paint-rects flag that lives in something called the "compositor," but that may be irrelevant for me.



Both of these work, but since Chromium uses a multi-process architecture, I'm hoping that there's a way I can specify that switch, or otherwise, turn on a feature in one process and not have to specify it at startup.



Is there a way to do this in Chromium? (Would be ideal to do this in Electron, but I'm not counting on it)







electron command-line-arguments chromium






share|improve this question













share|improve this question











share|improve this question




share|improve this question










asked Mar 21 at 22:02









pushkinpushkin

4,676113054




4,676113054












  • depends. majority of flags are required to be set before whole choromium app instance starts, reason it only works via cli or electron's appendSwitch before app ready event.

    – OJ Kwon
    Mar 21 at 22:50











  • @OJKwon Yeah, I know that in general in depends, but I'm interested in turning on paint flashing after startup. Maybe I should make my question more specific...

    – pushkin
    Mar 21 at 22:56











  • you can safely assume it won't unless there is specific comment about some flag can be enabled after chromium app starts.

    – OJ Kwon
    Mar 22 at 1:34











  • @OJKwon Fair enough.. I was crossing my fingers

    – pushkin
    Mar 22 at 14:05

















  • depends. majority of flags are required to be set before whole choromium app instance starts, reason it only works via cli or electron's appendSwitch before app ready event.

    – OJ Kwon
    Mar 21 at 22:50











  • @OJKwon Yeah, I know that in general in depends, but I'm interested in turning on paint flashing after startup. Maybe I should make my question more specific...

    – pushkin
    Mar 21 at 22:56











  • you can safely assume it won't unless there is specific comment about some flag can be enabled after chromium app starts.

    – OJ Kwon
    Mar 22 at 1:34











  • @OJKwon Fair enough.. I was crossing my fingers

    – pushkin
    Mar 22 at 14:05
















depends. majority of flags are required to be set before whole choromium app instance starts, reason it only works via cli or electron's appendSwitch before app ready event.

– OJ Kwon
Mar 21 at 22:50





depends. majority of flags are required to be set before whole choromium app instance starts, reason it only works via cli or electron's appendSwitch before app ready event.

– OJ Kwon
Mar 21 at 22:50













@OJKwon Yeah, I know that in general in depends, but I'm interested in turning on paint flashing after startup. Maybe I should make my question more specific...

– pushkin
Mar 21 at 22:56





@OJKwon Yeah, I know that in general in depends, but I'm interested in turning on paint flashing after startup. Maybe I should make my question more specific...

– pushkin
Mar 21 at 22:56













you can safely assume it won't unless there is specific comment about some flag can be enabled after chromium app starts.

– OJ Kwon
Mar 22 at 1:34





you can safely assume it won't unless there is specific comment about some flag can be enabled after chromium app starts.

– OJ Kwon
Mar 22 at 1:34













@OJKwon Fair enough.. I was crossing my fingers

– pushkin
Mar 22 at 14:05





@OJKwon Fair enough.. I was crossing my fingers

– pushkin
Mar 22 at 14:05












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