QCAD Bugtracker

I have a file that makes QCAD crash. I’ve been editing this design across different versions of QCAD over time and this is the first time I have a problem with it.

Steps to reproduce:
Open the attached file and try to add some entities or dimensions to it (you may need to create large ones since it seems to depend on the zoom factor; for example a very large ellipse). After a freeze of a few seconds QCAD will quit.

The attached file is a simplified version from which I deleted a number of entities; on the original I can’t do anything – QCAD crashes as soon as I try to create any object.

Cause: 3D lines with x1==x2, y1==y2 but z1!=z2

1) Tool Circle WC
2) CTR circletangent2radius

This doesn’t work between two circles !
I can make a circle that touches a line and a circle.
But I can NOT make a third circle with a given radius that touches two other circles.

All the other commands in this menu are working properly, can someone help me out ?

Hi !
i’m trying the new qcad/cam 3.17.1 and i have a delay when i hide and show a layer..
(linux MINT 17.2 x64)

The function is working, but the layer will hide (and show) with a delay from click on the apposite button.

The qcad 3.16.7 DON’T have this problem.. when you click on button immediately the layer disappear/show..

Ij window CAM Configuration output unit appears as inch instead of mm. All parameters are in option
when create a nc file,units are in inches not in mm. unsuable and not possible to change

Trying the EleksMaker EL01 Laser router I noticed some bugs in creating pathways, rapids, tolerance and homing.

See the attached pdf

When using (adding a TAB on a radius fails).

Example:

When length of the TAB is set to 1 mm.

After export to *.nc code the code is not ok.

And then check this is NC viewer or gcode sender the length is not set to 1 mm but is smaller.

On a line this function (TAB) is correct working.

Points are not being exported.

When compiling QCAD 3.4.2.0 on Linux, the transactionlistener plugin gets installed to the wrong folder. The attached patch provides the correct directory path that trasactionlistener.so file gets installed too.

I open anyting file dxf, the message pop-up : Grounded 0 recursive block references in blocks:

Community version (still on FBSD only), so dxflib. I suspect the culprit is dxflib.

I have created layers and blocks and whatnot with (hungarian) accented characters in their names.
Apparently (according to the Internet, as evidenced probably most glaringly by usa.autodesk.com /adsk/servlet/ps/dl/item?siteID=123112&id=7586582&linkID=9240617) the R15 DXF version assumes single-byte character sets being used. Quick grepping the DXF2000 mentions “String (255-character maximum; less for Unicode strings)” (Group Code Value types), so it may be a false track...

Anyway, the DXF file written does have strings converted to single-byte encoding, but it seems it’s always ANSI-1252. When the output encoder encounters a character that is not representable in this one, it will use a literal question mark.

Actual case, I have a block with the name

106 egypólusú váltókapcsoló jelzőfénnyel

Of this, “ő” (U+0151) is not representable in ANSI-1252, so what gets written to the dxf is (non-ASCII shown in hex)

106 egyp<f3>lus<fa> v<e1>lt<f3>kapcsol<f3> jelz?f<e9>nnyel

Note the literal question mark.

Now the problem is this is an irreversible operation but the result is perfectly valid ANSI-1252, so upon opening the file again, I will get a block named

106 egypólusú váltókapcsoló jelz?fénnyel

IMHO the ideal resolution is to

1. Have a preference for the export code page (and use it, too, circumstances permitting)
2. Iff this is not set (or set to a default “Use system locale to determine” or something), use a look-up table to take a good guess (like old QCAD2 qcadlib/src/engine/rs_system.cpp:QCString RS_System::localeToISO())
3. If the output encoder encounters a character that is not representable in the target code page, throw an error with an option to ignore the error (and keep using question marks, but then this must have been acknowledged by the user so not silent problem anymore), pick a new output code page, whatever else

This all assuming the R15 doesn’t actually depends hardly on ANSI-1252 and ANSI-1252 only. In that case, option #3 would still be nice.

Most Western European languages (and English) are not affected by this as ANSI-1252 has most of them covered, but a little to the east, a little to the south, a little to the north, and it does make a bit of a difference :)

I moved all my tools bars to the side of the screen (vertical). only options was at the top. next restart it went HUGE.
it would only revert after putting another toolbar back (horizontal) and restarting qcad.

Hello!

When I’m trying to make a great number of text editing operation the QCAD 3.4.6 application crashes with following errors:

lman@lman:~/opt/qcad-3.4.6-linux-x86_32$ ./qcad
Debug: RCamScriptsPlugin: init
Debug: RDwgPlugin::init: trial
Debug: RDxfPlugin::init
Debug: RHelpPlugin::init
Debug: RProScriptsPlugin::init
Debug: TIMER: 56 ms - “loading add-ons”
Debug: TIMER: 672 ms - “initializing add-ons”
Debug: checking for updates...
Warning: QSslSocket: cannot resolve SSLv2_client_method
Warning: QSslSocket: cannot resolve SSLv2_server_method
Debug: no updates available
Debug: checking for updates...
Debug: no updates available
Warning: RHatchData::getPainterPaths: cannot load hatch pattern: “”
Warning: RHatchData::getPainterPaths: cannot load hatch pattern: “”
Debug: “RDwgServices::printErrorStackTrace: Handle already exists”
Warning: RDwgExporter::exportEntity: Exception occurred. Entity NOT saved:
RTextEntity(RTextBasedEntity(REntity(RObject(id: 3012, handle: “0xf33”, document: “0xa20e830”, address: “0xa9e1010”, undone: 0), type: 14, layerId: 21, blockId: 22, parentId: -1, childIds: QSet() , lineweight: -1 , linetypeId: 0 , color: RColor(ByLayer) , drawOrder: 2907 , selectionStatus: false , boundingBoxes: (RBox(RVector(1048.41, 175.238, 0) - RVector(1063.59, 177.762, 0)) ) ) , alignmentPoint: RVector(1056, 176.5, 0), position: RVector(0, 0, 0), text: “\fCalibri|b0|i1|;150”, textHeight: 1.85207, textWidth: 7, drawingDirection: 1))
Debug: “RDwgServices::printErrorStackTrace: Handle already exists”
Warning: RDwgExporter::exportEntity: Exception occurred. Entity NOT saved:
RTextEntity(RTextBasedEntity(REntity(RObject(id: 3012, handle: “0xf33”, document: “0xa20e830”, address: “0xa9e1010”, undone: 0), type: 14, layerId: 21, blockId: 22, parentId: -1, childIds: QSet() , lineweight: -1 , linetypeId: 0 , color: RColor(ByLayer) , drawOrder: 2907 , selectionStatus: false , boundingBoxes: (RBox(RVector(1048.41, 175.238, 0) - RVector(1063.59, 177.762, 0)) ) ) , alignmentPoint: RVector(1056, 176.5, 0), position: RVector(0, 0, 0), text: “\fCalibri|b0|i1|;150”, textHeight: 1.85207, textWidth: 7, drawingDirection: 1))
Debug: “RDwgServices::printErrorStackTrace: Handle already exists”
Warning: RDwgExporter::exportEntity: Exception occurred. Entity NOT saved:
RTextEntity(RTextBasedEntity(REntity(RObject(id: 3012, handle: “0xf33”, document: “0xa20e830”, address: “0xa9e1010”, undone: 0), type: 14, layerId: 21, blockId: 22, parentId: -1, childIds: QSet() , lineweight: -1 , linetypeId: 0 , color: RColor(ByLayer) , drawOrder: 2907 , selectionStatus: false , boundingBoxes: (RBox(RVector(1048.41, 175.238, 0) - RVector(1063.59, 177.762, 0)) ) ) , alignmentPoint: RVector(1056, 176.5, 0), position: RVector(0, 0, 0), text: “\fCalibri|b0|i1|;150”, textHeight: 1.85207, textWidth: 7, drawingDirection: 1))
Debug: “RDwgServices::printErrorStackTrace: Handle already exists”
Warning: RDwgExporter::exportEntity: Exception occurred. Entity NOT saved:
RTextEntity(RTextBasedEntity(REntity(RObject(id: 3012, handle: “0xf33”, document: “0xa20e830”, address: “0xa9e1010”, undone: 0), type: 14, layerId: 21, blockId: 22, parentId: -1, childIds: QSet() , lineweight: -1 , linetypeId: 0 , color: RColor(ByLayer) , drawOrder: 2907 , selectionStatus: false , boundingBoxes: (RBox(RVector(1048.41, 175.238, 0) - RVector(1063.59, 177.762, 0)) ) ) , alignmentPoint: RVector(1056, 176.5, 0), position: RVector(0, 0, 0), text: “\fCalibri|b0|i1|;150”, textHeight: 1.85207, textWidth: 7, drawingDirection: 1))
Debug: “RDwgServices::printErrorStackTrace: Handle already exists”
Warning: RDwgExporter::exportEntity: Exception occurred. Entity NOT saved:
RTextEntity(RTextBasedEntity(REntity(RObject(id: 3012, handle: “0xf33”, document: “0xa20e830”, address: “0xa9e1010”, undone: 0), type: 14, layerId: 21, blockId: 22, parentId: -1, childIds: QSet() , lineweight: -1 , linetypeId: 0 , color: RColor(ByLayer) , drawOrder: 2907 , selectionStatus: false , boundingBoxes: (RBox(RVector(1048.41, 175.238, 0) - RVector(1063.59, 177.762, 0)) ) ) , alignmentPoint: RVector(1056, 176.5, 0), position: RVector(0, 0, 0), text: “\fCalibri|b0|i1|;150”, textHeight: 1.85207, textWidth: 7, drawingDirection: 1))
Debug: “RDwgServices::printErrorStackTrace: Handle already exists”
Warning: RDwgExporter::exportEntity: Exception occurred. Entity NOT saved:
RTextEntity(RTextBasedEntity(REntity(RObject(id: 3012, handle: “0xf33”, document: “0xa20e830”, address: “0xa9e1010”, undone: 0), type: 14, layerId: 21, blockId: 22, parentId: -1, childIds: QSet() , lineweight: -1 , linetypeId: 0 , color: RColor(ByLayer) , drawOrder: 2907 , selectionStatus: false , boundingBoxes: (RBox(RVector(1048.41, 175.238, 0) - RVector(1063.59, 177.762, 0)) ) ) , alignmentPoint: RVector(1056, 176.5, 0), position: RVector(0, 0, 0), text: “\fCalibri|b0|i1|;150”, textHeight: 1.85207, textWidth: 7, drawingDirection: 1))
Could not allocate register file: 12
./qcad: line 18: 7332 Segmentation fault LD_LIBRARY_PATH=”$DIR” “$binary” -style plastique “$@”

OS: Linux Debian 7.0.1 (”uname -a” return: SMP Debian 3.13.7-1 (2014-03-25) i686 GNU/Linux)
Thanks.

After creating the labels in drawing in Russian (Cyrillic), after saving and reopening the drawing file - changing the text encoding (??????????). Need to re-type the text ... How to fix this error?

Hi,

I have just updated my Mac OS from 10.9.2 to 10.9.4. QCAD 3.6.2 seems to be working normally under the newest version of Mac OS, but has developed a very specific bug which leads to reproducible crashes when a text object is edited.

Steps to minimally reproduce:
1. Open QCAD
2. Create a text object
3. Place the text object on the canvas
4. double-click the text object and edit its contents
5. click OK to accept changes
6. repeat from step 4 three or four times.

After several attempts to edit a text object, QCAD will crash with EXC_BAD_ACCESS (SIGBUS) in thread 0 (QCoreApplication).
The crash can also be triggered by moving the text object around on the canvas (instead of editing its contents).
The bug does not require anything else (no other objects on the canvas, no particular font, occurs in both new and previously saved documents).

Apart from this bug, QCAD seems to work fine on OS X 10.9. The text editing crash did not occur before the latest OS update. No other applications on my system seem to be having any problems. If this problem can be fixed, I think QCAD will be quite usable on 10.9.

See also related bugs in:
 FS#1091 

If you select (line) segments in a visible yet locked layer and choose “convert segments to polyline” (OG), the segments are deleted, but inserting the polyline fails.
So you can easily destroy locked layers by mistake which contradicts the idea of locking layers.

$ git status
On branch master
Your branch is up-to-date with ‘origin/master’.

$ qcad
Debug: RDxfPlugin::init
Debug: RExamplePlugin::init
Debug: TransactionListenerPlugin::init
Debug: TIMER: 59 ms - “loading add-ons”
Warning: “QFormBuilder was unable to create a custom widget of the class ‘QWebView’; defaulting to base class ‘QWidget’.”
Debug: TIMER: 602 ms - “initializing add-ons”
Warning: Script Exception:
“TypeError: Result of expression ‘tagsBrowser.page’ [undefined] is not a function.”
Warning: “<anonymous>()@/home/mo/opt/qcad/scripts/Widgets/LibraryBrowser/LibraryBrowser.js:362”
Warning: RScriptHandlerEcma::eval: script engine exception: “TypeError: Result of expression ‘tagsBrowser.page’ [undefined] is not a function.”
Warning: “<anonymous>()@/home/mo/opt/qcad/scripts/Widgets/LibraryBrowser/LibraryBrowser.js:362”
Warning: At least one uncaught exception:
Warning: “<anonymous>()@/home/mo/opt/qcad/scripts/Widgets/LibraryBrowser/LibraryBrowser.js:362”

I have some large library, but the library browser is always crashing since long time and several versions, also tagged versions. I need to disable it by removing LibraryBrowser.js completely or deleting my configuration in order to get QCad starting again.
This is the master head from git, on Gentoo@amd64

I am trying to use the align tool (M, A) to align two text objects vertically. I am able to get them aligned how I want them, but when I confirm (click the green check box in the upper right-hand corner) they mysteriously jump up a large grid square or so. I am then able to get them back into the alignment by the “undo” command. In case that didn’t make sense I’ll try this one more time:

{Result} (User Action)

{text boxes out of alignment} →(Align tool “M,A”)→{text boxes aligned}→(click green checkmark)→{text boxes move randomly}→(undo “ctrl-z”)→{text boxes aligned}

I’m thinking this is either operator error or a bug. It is consistent though.

This option seems to only work with the script debugger enabled.
See:
http://www.qcad.org/rsforum/viewtopic.php?f=33&t=3091

Hello,

This is my first real bug report so please advise how i could provide more useful information.

I am not certain if the severity is correct.

The bug: segfault when creating a spline with a dashed linetype or opening a file containing one.

The bug isn’t present with the dwg extension installed

Steps to reproduce:
1. create drawing
2. create spline
3. set linetype to dashed
4. crash

I use architectural units everyday in QCAD and would appreciate being able to enter feet and inches from the “command line” for convenience and accuracy.

I have been entering “calculations” to arrive at the distance values (i.e. 10*12+6.125 = 10’-6 1/8”), but this method is time consuming and prone to input error.

I would like to see Acad’s architectural distance method implemented in QCAD. This entry method would replace the “calculated” entry with (as an example): 10’6-1/8.

Command Line: Next point: 10’6-1/8
The <’> mark triggers a 12 times multiplier for the proceeding number,
the next number is the whole inches and
the ↔ is a separator that adds the fraction to the whole inches before it.

Thanks for considering this feature request. I’m certain that many QCAD users in the Architectural, Mechanical, Electrical and Construction professions wold appreciate this convenience (especially those moving past Acad).

Info arc area specified on drawing is no where near the same as shown in properties editor.

When rounding the fourth corner of a rectangle, with trim checked or unchecked, instead of the corner being trimmed to a radius, the rectangle itself disappears leaving only the corner with the rounded off portion intact.

When making an offset of a polyline with ‘round join’ enabled, and making a small offset of 0.0015 inches, no arcs are made, only coarsely interpolated line segments.
Further tests show that this is true until the offset is increased 0.040 inches; then the offset begins to create arcs.

The creation of arcs in a polyline offset with such small distances did work in QCAD 2.x.

I have created a block from a selection. I have then later created more items on my CAD page using that block, then later yet, moved the objects to a new layer. I noticed that while the object has accepted being on the new layer, the color hasn’t changed to the new layer’s color. I can only get the line color to change if I go into the block itself and move the individual segments of the block to that new layer, then save the new block (which, by the way, I can’t save over the existing block?!?!)

In the sample file attached, you will see that the block item in the 3 o’clock position is in layer 0, while the rest are in “Vent Holes” layer. If you make layer 0 hidden, the one block is hidden (like it should), but the block item refuses to take on the layer’s color even though the block’s color is “By Layer”

This problem is USB Flash drive related.

First of all, QCAD does not show the flash drive a drive where data can be stored, but it does when one wants to open a file.

If one then did open a file from the flash drive, saving it back tot he flash drive change the permission of the entire drive to read only and I could not manage to change that other than formatting the drive.

Hi,

In ‘Application preferences, Draw, Text’ fonts can be selected.

There is a mixing up between fonts (the appearance of characters on screen) and code tables (what digital code is used for each character).

‘ISO8859-11’ is the 8 bit Thai (!) code table and not a font
‘Unicode’ is the 16 bit code table and not a font.

For downward comptability QCAD should use default font Standard (ISO3098) with code table ISO8859-1 (US-ASCII Latin-1).

Hi,

Using the Copy and Move command the [ ] Use current layer and attributes’ is confusing.

Perhaps [ ] change copy /moved set to current layers and attributes. is more suitable.

I experience long start delays. I’ve trace the problem to the fact that I have autofs automounting my home directories. However, an strace of qcad-bin shows the following:

execve("/opt/ribbonsoft/qcad/qcad-3.12.6/qcad-bin", ["/opt/ribbonsoft/qcad/qcad-3.12.6"...], [/* 87 vars */]) = 0
brk(NULL)                               = 0x1eca000
mmap(NULL, 4096, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fd6194ad000
access("/etc/ld.so.preload", R_OK)      = -1 ENOENT (No such file or directory)
open("/home/andrew/local/qt/lib/tls/x86_64/libqcadecmaapi.so", O_RDONLY|O_CLOEXEC) = -1 ENOENT (No such file or directory)
stat("/home/andrew/local/qt/lib/tls/x86_64", 0x7fff4722f250) = -1 ENOENT (No such file or directory)
open("/home/andrew/local/qt/lib/tls/libqcadecmaapi.so", O_RDONLY|O_CLOEXEC) = -1 ENOENT (No such file or directory)
stat("/home/andrew/local/qt/lib/tls", 0x7fff4722f250) = -1 ENOENT (No such file or directory)
open("/home/andrew/local/qt/lib/x86_64/libqcadecmaapi.so", O_RDONLY|O_CLOEXEC) = -1 ENOENT (No such file or directory)
stat("/home/andrew/local/qt/lib/x86_64", 0x7fff4722f250) = -1 ENOENT (No such file or directory)
open("/home/andrew/local/qt/lib/libqcadecmaapi.so", O_RDONLY|O_CLOEXEC) = -1 ENOENT (No such file or directory)
stat("/home/andrew/local/qt/lib", 0x7fff4722f250) = -1 ENOENT (No such file or directory)

Since there is no “andrew” user here, I have to wait for automount to timeout which takes about 2m and is rather annoying.

I am seeing duplicate zoom buttons in the View toolbar, and also under the View menu. Under Application Preferences→General→Tool Settings there are also multiple entries for these, with Shortcuts and Commands highlighted in red (means there are conflicts?). This is the QCAD/CAM version on Linux 32-bit Debian “testing” release. I also tried the same version on Windows 7 64-bit and am not seeing this issue. Screen shots attached.

The layerlist shows at any operation all sublayer, even if they were previously hidden!

Hi,

I have a circle and circle is not round.
Unit of drawing is in metres and radius is set to 2.38.
The circle displays as a polygon instead.

Hi,

I tried to add a leader and for some reason the arrow does not appear. I found out that this occurs when the line is short. To me, line is sufficiently long enough but somehow QCAD thinks it is too short.

Screenshot shows added leader.

Also when I try to change arrow: no to “yes”, while the dropdown shows yes, I am not able to select it. It just defaults to no.

Workaround:
Draw longer line.

With the attached DXF file, select Draw → Polyline → Create from Segments
(O, G) and click on the complex polyline inside the circle (eg on
the top left arc). Apolyline is created with a few segments,
and one or more segments are deleted!

Different segments are deleted depending on which segment is clicked.

ich habe ein Linien Gitter in QCAD erstellt und dann mit CAM Export eine NC Datei erstellt.
Im CAM Simulator sieht man dass der GCODE Postprozessor nicht den kürzesten Weg verwendet.
Anbei folgende Dateien :
CAM_TEST_LINIEN.dxf, CAM_TEST_LINIEN.nc, CAM_TEST_LINIEN.log und eine Bilddatei CAM_TEST_LINIEN.png hier kann man sehen wie die Eistellungen für die GCODE Erstellung sind.

QCAD/CAM version 3.16.7.1 (snapshot release)

QCAD/CAM version 3.16.7.1 for Ubuntu Linux starts up with a totally black screen with only the title bar showing. By clicking around at the top of the screen I can get the menus to drop down and appear over the blank black screen. That is how I captured all the version information below. QCAD/CAM version: 3.15.5.0 for Ubuntu Linux starts with all the normal screen graphics appearing normally. I labeled this bug report as critical because QCAD/CAM is unusable on Ubuntu Linux, but for me it is not so critical since I can use the Windows version.

Versions
QCAD version: 3.16.7.1
Date: Mar 22 2017
Qt version: 5.8.0
Compiler version: gcc 4.8.1
Build Date: Mar 22 2017
Revision: 17a80fac27c3ae6aa68cd4ee15ffa4f3e2ab0a9a

Architecture: x86_64
OS: Linux
OS version: Unknown

Locale
QCAD locale: en
Name: en_US
Country: 225
Country name: United States
Language: 31
Language name: American English
Script: 7
Script name: Latin
Decimal point: 46
Negative sign: 45
Positive sign: 43
Text direction: 0
System codec: UTF-8

Arguments: /home/dave/opt/qcadcam-3.16.7.1-pro-linux-x86_64/qcad-bin

Plugins
Description=CAM tools.
FileName=/home/dave/opt/qcadcam-3.16.7.1-pro-linux-x86_64/plugins/libqcadcamscripts.so
ID=CAM
License=Proprietary
Name=CAM
NamePostfix=/CAM
PurchaseURL=http://ribbonsoft.com/add-ons/qcadcam-purchase QtVersion=5.8.0
SplashOverride=:/scripts/Cam/splashscreen.png
SplashOverride@2x=:/scripts/Cam/[email protected]
URL=http://ribbonsoft.com/add-ons/qcadcam Version=3.16.7.1

FileName=/home/dave/opt/qcadcam-3.16.7.1-pro-linux-x86_64/plugins/libqcaddwg.so
ID=DWG
License=Proprietary
Name=QCAD Pro
PurchaseURL=http://ribbonsoft.com/add-ons/qcadpro-purchase QtVersion=5.8.0
SystemCodePage=0
URL=http://ribbonsoft.com/add-ons/qcadpro Version=3.16.7.1 (Teigha® 4.02.2.0)

Description=Import/export support for the DXF format. Based on dxflib.
FileName=/home/dave/opt/qcadcam-3.16.7.1-pro-linux-x86_64/plugins/libqcaddxf.so
ID=DXF
License=GPLv2+
Name=DXF
QtVersion=5.8.0
URL=http://www.qcad.org Version=3.16.7.1 (dxflib 3.12.2.0)

Description=OpenGL ES 3D display.
FileName=/home/dave/opt/qcadcam-3.16.7.1-pro-linux-x86_64/plugins/libqcadgles3d.so
ID=GLES
License=Proprietary
Name=QCAD Pro
PurchaseURL=http://ribbonsoft.com/add-ons/qcadpro-purchase QtVersion=5.8.0
URL=http://ribbonsoft.com/add-ons/qcadpro Version=3.16.7.1

Description=Integrated help browser.
FileName=/home/dave/opt/qcadcam-3.16.7.1-pro-linux-x86_64/plugins/libqcadhelp.so
ID=HELP
License=Proprietary
Name=QCAD Pro
QtVersion=5.8.0
URL=http://www.ribbonsoft.com Version=3.16.7.1

Description=Polygon clipping, boolean polygon operations, path offset.
FileName=/home/dave/opt/qcadcam-3.16.7.1-pro-linux-x86_64/plugins/libqcadpolygon.so
ID=POLYGON
License=Proprietary
Name=QCAD Pro
PurchaseURL=http://ribbonsoft.com/add-ons/qcadpro-purchase QtVersion=5.8.0
URL=http://ribbonsoft.com/add-ons/qcadpro Version=3.16.7.1

Description=QCAD Professional tools.
FileName=/home/dave/opt/qcadcam-3.16.7.1-pro-linux-x86_64/plugins/libqcadproscripts.so
ID=PROTOOLS
License=Proprietary
Name=QCAD Pro
NamePostfix= Professional
PurchaseURL=http://ribbonsoft.com/add-ons/qcadpro-purchase QtVersion=5.8.0
URL=http://ribbonsoft.com/add-ons/qcadpro Version=3.16.7.1

Description=Polygon triangulation.
FileName=/home/dave/opt/qcadcam-3.16.7.1-pro-linux-x86_64/plugins/libqcadtriangulation.so
ID=TRIANGULATION
License=Proprietary
Name=QCAD Pro
PurchaseURL=http://ribbonsoft.com/add-ons/qcadpro-purchase QtVersion=5.8.0
URL=http://ribbonsoft.com/add-ons/qcadpro Version=3.16.7.1

Environment
LC_TIME=en_US.UTF-8
DESKTOP_SESSION=default
SSH_AGENT_PID=1743
XMODIFIERS=@im=ibus
LOGNAME=dave
QT_ACCESSIBILITY=1
PAPERSIZE=letter
HOME=/home/dave
LC_NUMERIC=en_US.UTF-8
XDG_DATA_DIRS=/usr/share/default:/usr/share/gnome:/usr/local/share/:/usr/share/:/var/lib/snapd/desktop
XDG_VTNR=2
SHELL=/bin/bash
XDG_SEAT=seat0
GIO_LAUNCHED_DESKTOP_FILE=/home/dave/Desktop/Ribbonsoft-qcad.desktop
WINDOWPATH=2
QT_IM_MODULE=ibus
XDG_SESSION_TYPE=x11
XDG_RUNTIME_DIR=/run/user/1000
LC_MEASUREMENT=en_US.UTF-8
LC_TELEPHONE=en_US.UTF-8
XDG_CURRENT_DESKTOP=GNOME
UNICODEMAP_JP=cp932
DEFAULTS_PATH=/usr/share/gconf/default.default.path
LC_PAPER=en_US.UTF-8
XAUTHORITY=/run/user/1000/gdm/Xauthority
LC_ADDRESS=en_US.UTF-8
LC_IDENTIFICATION=en_US.UTF-8
QT_STYLE_OVERRIDE=gtk
LC_NAME=en_US.UTF-8
GIO_LAUNCHED_DESKTOP_FILE_PID=13310
LC_MONETARY=en_US.UTF-8
XDG_SESSION_DESKTOP=default
GTK_MODULES=gail:atk-bridge
XDG_MENU_PREFIX=gnome-
XDG_SESSION_ID=1
QT_LINUX_ACCESSIBILITY_ALWAYS_ON=1
XDG_CONFIG_DIRS=/etc/xdg/xdg-default:/etc/xdg
DISPLAY=:1
LD_LIBRARY_PATH=/home/dave/opt/qcadcam-3.16.7.1-pro-linux-x86_64
PWD=/home/dave
USER=dave
SHLVL=1
_=/home/dave/opt/qcadcam-3.16.7.1-pro-linux-x86_64/qcad-bin
MANDATORY_PATH=/usr/share/gconf/default.mandatory.path
LANG=en_US.UTF-8
SSH_AUTH_SOCK=/run/user/1000/keyring/ssh
DBUS_SESSION_BUS_ADDRESS=unix:abstract=/tmp/dbus-S2ePMZG3dG,guid=e590a63ac7ca3b971f776cae58d663c0
GDMSESSION=default
GNOME_DESKTOP_SESSION_ID=this-is-deprecated
SESSION_MANAGER=local/OPA:@/tmp/.ICE-unix/1681,unix/OPA:/tmp/.ICE-unix/1681
USERNAME=dave
PATH=/home/dave/bin:/home/dave/.local/bin:/usr/local/sbin:/usr/local/bin:/usr/sbin:/usr/bin:/sbin:/bin:/usr/games:/usr/local/games:/snap/bin

See also:
https://www.qcad.org/rsforum/viewtopic.php?f=74&t=4914