QCAD Bugtracker

QCAD - 2D CAD System.

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IDCategoryTask TypeSeverity  descSummaryStatusProgress
 1237 QCAD/CAMBug ReportMedium Blocks should be layer agnostic Closed
Task Description

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”

 1241 QCAD (main)Bug ReportMedium Options tool bar fields not editable, no interaction wi ...Closed
Task Description

Likely affects Windows Vista, 7, 8.

http://www.qcad.org/rsforum/viewtopic.php?f=33&t=3588 http://www.qcad.org/rsforum/viewtopic.php?f=33&t=3587

Caused by update from Qt 4.7.4 to Qt 4.8.7

 1243 QCAD (main)Bug ReportMedium Printing / PDF Export: points offset Closed
Task Description

Hi !
im’ trying the 3.9.6 base version, and i have found a problem in printing/exporting..

To replicate the bug:
Try to draw a simple form, for ex a circle, and draw a center of this circle using POINT function.

Now if you make a print preview, then CENTER the circle in the page and try to export to pdf or print, the circle and the POINT (center) are ofsetted !!

i have try to make the same operation with 3.9.5 and i have no problem !!!

 1268 QCAD (main)Bug ReportMedium DXF/DWG import: cannot open file with custom linetypes Closed
Task Description

If custom complex linetypes embedded in a file refer to a font that is not available for linetype shapes, the file cannot be opened.

Can not open file Please check your access rights, file format and file extensions


 1293 QCAD/CAMBug ReportMedium Crash when snapping to intersection points between 3d l ...Closed
Task Description

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

 1294 dxflibBug ReportMedium Hatches scale differently now from earlier releases Closed
Task Description

Something with hatching changed between 3.10 and 3.12; Changelog for 3.11.2 states: “Add support for hatch patterns defined per entity”. That may be?

Attached drawing from an older version; open in current and see a black box where there should be earth. Change scaling of hatch from 10 to 254 and it will be exactly the same it was when saving the file.

Curiously, that is like swapping inches and mm? Looking into prefs, there is a new drop down: “Messsytem für Linien und Schraffuren” and it read “imperial”; making it metric and bingo, my drawing looks as intended!

This is bad, because each drawing has to be changed! I changed the application default drawing setting to metric and the existing drawing still had imperial set…

Probably a heuristic was on order? If the drawing does not specify the new setting, and the drawing units is metric, use metric?

 1347 QCAD (main)Bug ReportMedium Point style bug. Closed
Task Description

Hi !
i have find another strangeware about points.. if you set a different point style in program options, on the display the style is correct, but when you try to print or export the drawing, the points are printed as default “point” (little black circle).

 1348 QCAD (main)Bug ReportMedium Points move during print/PDF-export Closed
Task Description

Points move by a constant offset relative to the rest of the drawing when printing or exporting to PDF.

This is the exact same bug as  FS#1243 , which was reportedly fixed in version 3.9.7 with commit https://github.com/qcad/qcad/commit/9c9d7bbc3fd845b8475ff12a919ad8e86bbaeb1f, but has resurfaced in version 3.12.4 (and possibly earlier versions that I have not tested).

To replicate the bug, create a simple drawing with points and lines then print or export to PDF, and notice that the points have moved relative to the lines or have disappeared off of the page entirely.

Tested with Arch Linux, 64 bit; QCAD version 3.12.4 using the prebuilt binaries supplied from the qcad.org download site.

 1353 QCAD (main)Bug ReportMedium Text rendering: subscripts and superscripts display Closed
Task Description

Text with subscripts (e.g. “S\S^3;”) is display incorrectly with the latest version on both Mac OS X and windows 64-bit.

The subscript (”3”) is displayed before the normal text (”S”).

I have been using subscripts to indicate electrical switch types on my blue prints.

It appears that superscripts are also being displayed incorrectly.

 1357 QCAD (main)Bug ReportMedium Can't open files with special characters in their names Closed
Task Description

When opening a .dxf file saved by QCAD with a name containing a special characters (tested with diacritics), it fails with the following message:

Cannot open file
Import failed.

How to reproduce:
1 - Save a file (content doesn’t matter, it’s the same with an empty file and a file containing data) using the name “tèst1.dxf” 2 - Try to open the file
3 - Error message

What is expected:
The file open.

Note that the problem doesn’t lie in the “save” step: the same file, once renamed to “test1.dxf” opens fine.

 1442 QCAD (main)Bug ReportMedium Imported and saved dimensions reference empty blocks Closed
Task Description

- Import drawing from other CAD application with dimension blocks (*D..)
- Save file with QCAD
- Dimension blocks are exported to drawing file but are empty which can break compatibility with other products

 1564 QCAD/CAMBug ReportMedium QCAD/CAM: black main window or main window not painted  ...Closed
Task Description

QCAD/CAM version (snapshot release)

QCAD/CAM version 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: 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.

QCAD version:
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

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-

Description=CAM tools.
PurchaseURL=http://ribbonsoft.com/add-ons/qcadcam-purchase QtVersion=5.8.0
[email protected]=:/scripts/Cam/[email protected]
URL=http://ribbonsoft.com/add-ons/qcadcam Version=

Name=QCAD Pro
PurchaseURL=http://ribbonsoft.com/add-ons/qcadpro-purchase QtVersion=5.8.0
URL=http://ribbonsoft.com/add-ons/qcadpro Version= (Teigha®

Description=Import/export support for the DXF format. Based on dxflib.
URL=http://www.qcad.org Version= (dxflib

Description=OpenGL ES 3D display.
Name=QCAD Pro
PurchaseURL=http://ribbonsoft.com/add-ons/qcadpro-purchase QtVersion=5.8.0
URL=http://ribbonsoft.com/add-ons/qcadpro Version=

Description=Integrated help browser.
Name=QCAD Pro
URL=http://www.ribbonsoft.com Version=

Description=Polygon clipping, boolean polygon operations, path offset.
Name=QCAD Pro
PurchaseURL=http://ribbonsoft.com/add-ons/qcadpro-purchase QtVersion=5.8.0
URL=http://ribbonsoft.com/add-ons/qcadpro Version=

Description=QCAD Professional tools.
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=

Description=Polygon triangulation.
Name=QCAD Pro
PurchaseURL=http://ribbonsoft.com/add-ons/qcadpro-purchase QtVersion=5.8.0
URL=http://ribbonsoft.com/add-ons/qcadpro Version=

[email protected]=ibus

 1608 QCAD (main)Bug ReportMedium Unsupported XData type NOT imported Closed
Task Description

Unsupported XData type NOT imported errors on loading DWG files.
Resulting lines in image are not drawn correctly.
See details and sample file in forum post: https://www.qcad.org/rsforum/viewtopic.php?f=33&p=18223#p18223

 1646 QCAD/CAMBug ReportMedium 3.18 has a HATCH issue Closed
Task Description

If you pres the “hatch icon” then the word “hatch” appears in the command window, but. . . nothing happens.

But if you type “hatch” followed by “enter” then finally the Hatch Window pops up.

 1657 QCAD (main)Bug ReportMedium Edit > Drawing Preferences > Printing > Page: no effect ...Closed
Task Description

Printer settings cannot be changed for model space.

 1733 QCAD (main)Bug ReportMedium Open DXF just written by qcad crashes qcad  Closed
Task Description

I am a new qcad pro user and created a simple drawing and saved as DXF R27 and closed the app. I reopen the app and open that DFX and the app crashes. However, I can import it. I suspect (without any evidence) that the text in the dimension of the drawing is the problem. Perhaps this issue is like #1261

Process: QCAD-Pro [97927]
Path: /Applications/QCAD-Pro.app/Contents/MacOS/QCAD-Pro
Identifier: org.qcad
Version: 3.19 (3.19.2)
Code Type: X86-64 (Native)
Parent Process: ??? [1]
Responsible: QCAD-Pro [97927]
User ID: 501

Date/Time: 2018-04-11 18:07:15.937 -0700
OS Version: Mac OS X 10.12.6 (16G1314)
Report Version: 12
Anonymous UUID: 1EBA0D43-4553-C6E8-6F6A-1A9F3992052D

Sleep/Wake UUID: 86FC779B-AD43-426E-9FFA-4AFBFD6EFC8A

 1736 QCAD (main)Bug ReportMedium Draw > Image: broken Closed
Task Description

Draw > Image broken due to UI file resource not being found.

 1737 QCAD (main)Bug ReportMedium Block > Attributes > Define Block Attribute: broken Closed
Task Description

Broken due to UI file resource not being found.

 1747 QCAD (main)Bug ReportMedium Scaling w 2 ratios fails to scale polyline arc Closed
Task Description

Scaling without keeping the aspect ratio fails to scale an arc to an ellips when this is part of a polyline.

Discovered while documenting feature request ‘Skewing’


 1750 QCAD (main)Bug ReportMedium trimming polylines Closed
Task Description

Trimming polylines especialy those with a string of small segments should be done at the intersection of those polylines.
Now trimming is done with the seggments that where the nearest when selecting the two polylines.

 1773 QCAD (main)Bug ReportMedium File > PDF Export / SVG Export / Bitmap Export: file na ...Closed
Task Description

Configure QCAD to use native file dialogs
Load file
Export file as PDF, SVG, Bitmap
File name suggested by file dialog is drawing file which means user might accidentally overwrite drawing file.

 1820 QCAD/CAMBug ReportMedium CAM Export: exporting text entities broken Closed
Task Description

Hi Andrew,

Kubuntu, QCAD/CAM 3.21.3

Font Standard. Selected as ‘single line’ font for engraving with mill or laser.

While CAM Exporting as G-code Laser (Offset) MM, or as Linux CNC, Exporting gets trapped in a loop.

In Font Standard the glyph’s ? & $ @ s S Q and 2 contains unwanted Z-movements. It seems these glyphs entities are not alligned properly; endpoint last line does not meet startpoint next line; why else the Z-movements?

Could this misallignment also traps Exporting?

 1840 QCAD (main)Bug ReportMedium Edit > Paste along entity: endless loop Closed
Task Description

Ich habe im Snapshot unter macOS einen Fehler gefunden, der QCAD in eine Endlosschleife führt, sodaß QCAD nicht mehr antwortet.
Details siehe unter https://www.qcad.org/rsforum/viewtopic.php?f=89&t=6011#p22435

 1849 QCAD (main)Bug ReportMedium paste of spline with scaling of 0 crashes application Closed
Task Description

Application crashes when entering 0 in the scale option while pasting a spline.

This is an issue also when entering scale factors of less than 1, as the application immediately crashes when entering the 0 digit.
As a workaround for a scale factor of e.g. 0.5, one can enter 1.5 and then edit the 1 digit to 0.

 1868 QCAD (main)Bug ReportMedium Reading ellipse from DXF Closed
Task Description

Loading the appended dxf-file should show a circle and an ellipse.
The circle is ok.
The ellipse gets always an ellipse with center at (0|0),
main vertex at (1|0) and ratio of 1.

 1929 QCAD (main)Bug ReportMedium Printing Problem - Preview differs from Printout Closed
Task Description

... ? I reported this already some days ago, but the task doesn’t show up in the list? ...

Comparing ‘Drawing’ and ‘Preview’ - o.k.
Comparing ‘Preview’ and ‘Printout’ - NOT o.k. ! Elements are missing
(Rem: in the QCAD sketch itself, the missing elements are in a separate layer; however, anyway - preview should show the same image as the printout !?)


 1938 QCAD (main)Bug ReportMedium Segfault when trying to insert block from library (Fedo ...Closed
Task Description

(base) [[email protected] qcad-3.23.0-pro-linux-x86_64]$ ./qcad
QCAD version 3.23.0
10:21:34: Debug: calling odInitialize
10:21:34: Debug: dropped global XDATA (no res buf): “ViewportCenter” 10:21:52: Debug: importing file: /home/kforrester/Resilio Sync/Technical/Process Engineering/equipment_tag_and_name.dxf
./qcad: line 9: 3844 Segmentation fault (core dumped) LD_LIBRARY_PATH=”$DIR” “$binary” “[email protected]

QCAD has unexpectedly quit.

Please use the offscreen platform plugin for headless systems
(without a running X11 server):
./qcad -platform offscreen

In addition, you might have to override the default Qt style
to prevent the loading of a native desktop style (such as GTK):
./qcad -style plastique

I have tested this in version 3.22.1 too and get the same result. Reverting all the way back to 3.13.1 results in an operable version of qcad when working on the same file and library blocks.

 1951 QCAD (main)Bug ReportMedium QCAD Prof 3.23 does not switch to Finnish keyboard layo ...Closed
Task Description

QCAD Professional 3.23.0 is using en_US keyboard layout although I have a Finnish keyboard on Fedora 29. I have not found a way, how to chance the keyboard definition. In Fedora repositories there is QCAD Community Edition 3.22.1, and keyboard definitions there are working OK. Keyboard layout is following Gnu desktop keyboard selection and can be changed on the fly. Wrong keyboard layout makes working very hard, because almost all special keys are in different places, like colon, semicolon, plus, minus, parentheses, slash etc.

 1978 QCAD (main)Bug ReportMedium Mirror is not Flip Closed
Task Description

Hi Andrew,

Nosing around in the QCAD Reference Manual I noticed a misperception in the Mirror / Flip commands.

 2054 QCAD (main)Bug ReportMedium Misc > Modify > Flatten Drawing to 2D Closed
Task Description

Crash when drawing contains viewports.

 2074 QCAD Community EditionBug ReportMedium No tile print option Closed
Task Description

I’m trying to print a large cad drawing at 1:1 scale. However, when I go into preview to select tile button, it doesn’t exit. First image is my screeen capture, the 2nd is from the online tutorial regarding printing and the button that is missing.

 2113 QCAD (main)Bug ReportMedium wrong objects are selected while selecting region with  ...Closed
1 Task Description

wrong objects are selected while selecting region with mouse.
Actions:Trying to select small rectangle area using mouse while holding left mouse button. (ScreenShot_1.png)
Expected result: only objects inside selection rectangle (text, lines, rectangles) are selected.
Factual result: objects inside selection rectangle are selected as well as other objects which are farther away (marked with purple arrows in ScreenShot_2.png)

 2200 QCAD (main)Bug ReportMedium Linetype scale is wrong when scaling linetypes by linew ...Closed
Task Description

All linetype patterns are displayed too large.

 14 QCAD (main)Feature RequestMedium File: Print Preview Closed
Task Description


  • re-enable auto fit
  • re-enable center


  • option to not print empty pages


  • PDF export
  • scale factor
  • position
  • paper size
  • paper orientation
  • toggle portrait / landscape in toolbar
  • choose paper format in toolbar
  • multiple pages with margin and stitch marks
  • zoom to all pages
  • color mode (color, gray scale, black white)
  • scale combo box in drawing preferences empty
 25 QCAD (main)Feature RequestMedium Autosave Closed
Task Description


Make interval configurable
Enable / disable
Path (?)

 37 QCAD (main)Feature RequestMedium Generate Example Drawings Closed
Task Description
  • a script would be great actually. then we can generate different drawings with different units / scales / paper settings
  • OdWriteEx from OpenDesign creates something similar: a bunch of rectangles, each with a text label and an entity inside, e.g. “Aligned Dimension” and below a rectangle with an aligned dimension inside
  • the example drawings should contain:
    • an instance of every supported entity type (line, arc, circle, all dimensions, block insert, text, hatch, solid fill, ...)
    • lines in all available widths
    • lines in all available types
    • lines in all available (fixed) colors and some custom colors
  • script should be able to generate example drawings for different:
    • units
    • drawing scales
    • paper sizes
    • paper settings (background color, multi page settings, etc.)
 172 QCAD (main)Feature RequestMedium send to back / to front Closed
Task Description


 236 QCAD (main)Feature RequestMedium trial version: teaser dock showing a small web page Closed
Task Description
  • small dock widget showing a web page (for teaser, special sales etc.)
 259 QCAD (main)Feature RequestMedium Chain dimensions Closed
11 Task Description

Chain dimensions

 260 QCAD (main)Feature RequestMedium Reference dimensioning Closed
9 Task Description

Reference dimensioning (baseline dimensioning)

Create multiple dimensions using the same base line.

 264 QCAD (main)Feature RequestMedium Support for "Layouts" (paper space, viewport) Closed
25 Task Description

There is one important ACAD feature that I would really like to see supported in QCAD3 and that is “Layouts”

Looking at the block lists, it seems to me that it can’t be too much extra work to support it, since the model space and different paper spaces are already shown there - and one can edit it.

QCAD draws infinitely easier than ACAD and drawing layouts is a primary feature of ACAD. With this in QCAD I can hardly see why anyone that does 2D work would need ACAD at all.

 304 QCAD (main)Feature RequestMedium invalid hatch area hint Closed
Task Description

Trying to build a hatch area sometimes results in “invalid hatch area”. It would be nice if QCAD could give a hint why / where the problem occurs (where is “line too long” or “not closed”).

 344 QCAD (main)Feature RequestMedium show warning if someone draws on locked layer Closed
Task Description
  • show a warning on the QCAD console if someone tries to draw on a locked layer
 552 QCAD (main)Feature RequestMedium autosave removing last auto saved file Closed
Task Description

I would like to see an autosave-option which allows to autosave, but which keeps only the latest autosave file (instead of all). So there would be autosave (if something crashes) but the hard disk is not filled up too fast.

693QCAD (main)Feature RequestMediumSupport for external references (XREF)Likely to be implemented
25 Task Description

Support for external references (XREF)

 1164 QCAD (main)Feature RequestMedium make selected layer default parent for new layer Closed
1 Task Description


I would like to suggest a small, but yet important improvement to usabilty.

When adding a new layer the currently selected layer should be default for parent layer.

Currently a new layer is by default a top level layer, and so the user has to select the parent layer for each sub-layer, again and again.


 1821 QCAD (main)Feature RequestMedium Export svg with linetype parameter Closed
Task Description


as I saw in the svg file and tried it, the ‘stroke-dasharray’ parameter needed (with values) to show the line same as in the editor.


      <!-- Line -->
      <path d="M207452.1773,1518891.8208 L203034.0991,1518891.8208 " style="stroke:#808000;stroke-dasharray:200,300;stroke-width:25;" qs:layer="layer"/>



 1848 QCAD/CAMFeature RequestMedium PWM Laser Closed
Task Description

Hi Andrew,

I have added a PWM Laser post processor.

You can add it to QCAD’s post processor directory

 6 QCAD (main)Performance IssueMedium Auto snap near splines Closed
Task Description

Move cursor near spline, e.g. when drawing line with auto snap active.

 1123 QCAD (main)Performance IssueMedium Hatch in block causes performance problem Closed
Task Description

Hatches in blocks cause poor performance while (auto-)snapping.
The lines that make up those hatches are included in the search for intersection points which is not desirable.

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