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by picandies
Tue Mar 20, 2018 7:57 am
Forum: Graphics programming
Topic: is there a tutorials section?
Replies: 15
Views: 2261

Re: is there a tutorials section?

and any tutorials will (ok should) work on a Pi Certainly, the "vendors" websites may have good starting info, or even info specific to the rpi. Unless the tutorial is pi-specific, how do you know which packages work well & seamlessly with the rpi & which ones require lots of arm-wrestling & band-a...
by picandies
Tue Mar 20, 2018 4:30 am
Forum: Graphics programming
Topic: is there a tutorials section?
Replies: 15
Views: 2261

Re: is there a tutorials section?

This being the graphics programming section, I'm rather surprised not to find a tutorials portion for comparing the various graphics packages & tutorials for using them. Since this is rpi hardware being used, any tutorial should of course include interfacing with the I/o hardware, such as reading a...
by picandies
Tue Mar 20, 2018 4:29 am
Forum: Graphics programming
Topic: is there a tutorials section?
Replies: 15
Views: 2261

is there a tutorials section?

This being the graphics programming section, I'm rather surprised not to find a tutorials portion for comparing the various graphics packages & tutorials for using them. Since this is rpi hardware being used, any tutorial should of course include interfacing with the I/o hardware, such as reading a ...
by picandies
Tue Mar 20, 2018 3:48 am
Forum: Graphics programming
Topic: visual studio/MONO--any downside?
Replies: 6
Views: 2313

Re: visual studio/MONO--any downside?

Only interested in mono for normal gui uses (buttons, sliders, dials) , to control rpi hardware (led display, relays, mortor pwm, ad conversions, etc....no videos, or other high-data sources. But there seems to be very few concrete examples here of it actually being done..
by picandies
Sun Mar 18, 2018 3:12 pm
Forum: General discussion
Topic: Showing desktop in forefront
Replies: 4
Views: 411

Re: Showing desktop in forefront

Is there a complete list somewhere of rpi keyboard shortcuts (ex: ctrl-c=copy). maybe there are a few rarely used combos.
by picandies
Sat Mar 17, 2018 8:55 pm
Forum: General discussion
Topic: Showing desktop in forefront
Replies: 4
Views: 411

Re: Showing desktop in forefront

I may need to look at that more...I tried your install command & got a boatload of errors (using latest stretch). ** (obconf:2257): WARNING **: Error retrieving accessibility bus address: org.freedesktop.DBus.Error.ServiceUnknown: The name org.a11y.Bus was not provided by any .service files (obconf:...
by picandies
Sat Mar 17, 2018 5:19 pm
Forum: General discussion
Topic: Showing desktop in forefront
Replies: 4
Views: 411

Re: Showing desktop in forefront

It seems like I remember this being a function key combo to switch to the desktop? Anyone have a list that show what secret combo puts the desktop on top?
by picandies
Sat Mar 17, 2018 7:46 am
Forum: General discussion
Topic: Showing desktop in forefront
Replies: 4
Views: 411

Showing desktop in forefront

Working on my rpi3 using Stretch. The screen fills up quickly with various open windows (text editors, file mgr, etc)) & I need to momentarily see things on the desktop...is there a key click or something that will bring the desktop to the forefront, so it is not buried under all the open windows? I...
by picandies
Wed Mar 14, 2018 3:50 pm
Forum: Graphics programming
Topic: visual studio/MONO--any downside?
Replies: 6
Views: 2313

Re: visual studio/MONO--any downside?

Yeah, maybe the rpi hardware itself isn't so supported, things like I2c, spi, hdmi, and other hardware controls that you can control through Python libs.
by picandies
Wed Mar 14, 2018 7:47 am
Forum: Graphics programming
Topic: visual studio/MONO--any downside?
Replies: 6
Views: 2313

visual studio/MONO--any downside?

Recently, in my research, I came across using Visual Studio & mono to try out some GUI's...man it was quick and easy. The graphics seemed pretty good (almost PC quality) & there were lots of options in the PC development environment to make all kinds of adjustment to each graphics object.. To my sur...
by picandies
Fri Mar 09, 2018 5:57 am
Forum: Graphics programming
Topic: gernal GTK I/O question
Replies: 4
Views: 1248

Re: gernal GTK I/O question

Thanks PeterO---I will try it out shortly. This helps a lot. My finding are that most of the demos & materials on GTK "just" show a bunch of screens--I've never seen one that actually does anything (such as control a furnace, blink some leds, control a sump pump, or solar battery charger, etc)...Are...
by picandies
Thu Mar 08, 2018 7:18 pm
Forum: Graphics programming
Topic: gernal GTK I/O question
Replies: 4
Views: 1248

gernal GTK I/O question

Been doing some "intro" GTK menus/control tests....just some random buttons & widgets that do nothing other than to show I can get them on-screen. The coding is in C ...however my understanding is that GTK can also be used with Python ...via PyGobject??? I have not delved into this yet. In Python , ...
by picandies
Sat Feb 10, 2018 8:20 am
Forum: Graphics programming
Topic: graphics with a designer
Replies: 10
Views: 2206

Re: graphics with a designer

Do any of these have a strong positive or strong negative in running on the rpi? It seems like Tkinter comes built-in (so to speak). Probably need to give the GTK a try.
by picandies
Sat Feb 10, 2018 4:46 am
Forum: Graphics programming
Topic: graphics with a designer
Replies: 10
Views: 2206

Re: graphics with a designer

Thanks for the addition GTK info...looks interesting...by the way I Googled some GTK gui control panels & everything looks gray is there a special reason for that? I'd expect color to be used quite a bit for backgrounds, button colors, etc. The tutorial looks good, is it directly suitable for RPI us...
by picandies
Fri Feb 09, 2018 10:12 pm
Forum: Graphics programming
Topic: graphics with a designer
Replies: 10
Views: 2206

Re: graphics with a designer

Thanks PeterO...does GTK have sliders, buttons, knobs & the like? I don't about any of the packages, so saying GTK or GTK+3 means nothing to me. But it sort of llooks like glade can be used to draw your panel & place buttons, sliders etc, correct?
by picandies
Fri Feb 09, 2018 7:22 pm
Forum: Graphics programming
Topic: graphics with a designer
Replies: 10
Views: 2206

graphics with a designer

I am working on an rpi3 & want to setup some gui control panels. to control I/O, like motors and some relays and 2 pumps..no video or animation, though I might like to plot some data in 3d using matplotlib/scipy. I am not interested in running on the PC or any other device other than the rpi, and pr...
by picandies
Tue Jan 23, 2018 11:00 pm
Forum: General discussion
Topic: Question about TKINTER & GUI appearance
Replies: 7
Views: 969

Re: Question about TKINTER & GUI appearance

Are there widgets or other add-ons/imports for TKINTER? I was hoping to build on what I already had done. But I'm not happy with those "dead-looking" buttons.

Maybe MATLIBPLOT or SCIPY would support some gui designs (since I will eventually need to plot some sensor reading).
by picandies
Tue Jan 23, 2018 7:07 pm
Forum: General discussion
Topic: Question about TKINTER & GUI appearance
Replies: 7
Views: 969

Re: Question about TKINTER & GUI appearance

HTML is a thought, but I'm not familiar with webpages & not interested in any browser (maybe Electron is a help there). What bothers me most about the TKINTER buttons are the square corners, rather than rounding. I was looking for some fancy button widgets, or add-ins that might be a work around. I'...
by picandies
Tue Jan 23, 2018 5:58 pm
Forum: General discussion
Topic: Question about TKINTER & GUI appearance
Replies: 7
Views: 969

Question about TKINTER & GUI appearance

I've written some TKinter gui apps, but not super impressed, the buttons I get are just plain colored rectangles. How do you get rounded corners, borders, maybe 3d effects (such as pushing the button) & other things to fancy them up? I am using RPI3 & python (either 2 or 3 is fine).
by picandies
Wed Nov 29, 2017 12:40 am
Forum: General discussion
Topic: Working with small HDMI display
Replies: 11
Views: 1572

Re: Working with small HDMI display

@outofthebots I suppose you might get by with just running your PC monitor at the display res, but that can sort of fail. Lets say your target display was 300x400 pixels, that certainly wouldn't be good enough for the development environment, with all of its windows. How can you set the up the targe...
by picandies
Mon Nov 27, 2017 9:55 am
Forum: General discussion
Topic: Working with small HDMI display
Replies: 11
Views: 1572

Re: Working with small HDMI display

and my little 5" screen attached to HDMI at the same time and I can switch between the 2 anythime as bot are active at the sane time, i.e if I move my mouse curser over the realVNC window on my computer it moves the mouse on the 5" screen and vise versa[/ quote] so far so good--I got the VNC workin...
by picandies
Sun Nov 26, 2017 7:16 pm
Forum: General discussion
Topic: Working with small HDMI display
Replies: 11
Views: 1572

Re: Working with small HDMI display

Yes, everything I saw had palettes of buttons, sliders, text boxes, etc, that you'd grab, color, position etc, plus doing all the coding that happens with those items (such as what happens when you push a button , to active some IO or move your robot)...so I was wondering how this is typically worke...
by picandies
Sun Nov 26, 2017 4:13 pm
Forum: General discussion
Topic: Working with small HDMI display
Replies: 11
Views: 1572

Re: Working with small HDMI display

However, vnc can also be used to create a "virtual" desktop - a totally separate desktop which can only be accessed via vnc So is that how the gui is usually written??-- use a virtual VNC desktop to have the developer's session up on a large pc monitor, and then have the actual gui on the normal RP...
by picandies
Sun Nov 26, 2017 8:03 am
Forum: General discussion
Topic: Working with small HDMI display
Replies: 11
Views: 1572

Re: Working with small HDMI display

I doubt a terminal window would be suitable for drawing up a gui, or having other resources open. You want the programming development environment open, then see the results on the graphics display...would VNC allow that? How are people doing it, squinting at a little screen for weeks, doesn't seem ...
by picandies
Sun Nov 26, 2017 5:00 am
Forum: General discussion
Topic: Working with small HDMI display
Replies: 11
Views: 1572

Working with small HDMI display

I'm starting a new thread, as my previous attempt was asking my question in a potentially unrelated way. I bought a 5" HDMI touch screen to make some RPI3 GUI's to control relays & motors (buttons for start/stop, direction, timers , sliders for speed, etc),also to read some ADC's and display the lat...

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