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QCAD - 2D CAD System.

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IDCategory  ascTask TypeSeveritySummaryStatusProgress
1976QCAD (main)Feature RequestLowEnvelope at offset to a poly toolAssigned
Task Description


1977QCAD (main)Feature RequestLowCorresponding coordinate format Assigned
Task Description


It would be less confusing to read messages in the command line protocol if it would use the same coordinate separators like the settings below Application Preferences / General / Coordinate Format.

This example shows the “Absolute Cartesian Coordinate” but of course all corresponding format settings should be used within messages.

Absolute Cartesian Coordinate: Setting = semicolon (;) but the message will use division (/).

1982QCAD (main)Feature RequestLowmeasure DIN 1356Assigned
Task Description

To measure in the format DIN 1356 , Architect
It is hard work to do this manual input with meta characters.

1983QCAD (main)Feature RequestLowTrim All or Bulk Break outAssigned
1 Task Description

This is a trim method I am missing in Qcad.

20 years ago it existed in CadKey.
You had a bunch of lines or segments.
You defined a (new) line or segment as cutter.
‘Trim All’.
You pointed at the side of the cutter entity to trim all intersecting at that side.

Pritty the same as in this topic:

Only in rare cases I can use Husky’s workaround as pro.
It all depends on what else is in the clipping rectangle that is needed to trim all intended.
If of no use all single crossing entities have to be chosen one by one.


1999QCAD (main)Feature RequestLowViewport: Add additional properties for controlling dim...Assigned
1 Task Description

When working with multiple Viewports with different scale it could be very useful to have extra properties controlling how dimensions are rendered in the viewport:

E.g an extra “Dimension Scale” under “Scale” in the Viewport selection’s ‘Specific Properties’ section, could allow having the same size when printed.
This Dimension Scale would be multiplied on top of the Scale value, but only for Dimensions rendering.

Toggle button for hiding any dimensions in the Viewport. Maybe this should be controlled by being able to specify a Layer that should be hidden in this Viewport only, then I could select my Dimensions layer here.

The Viewport properties:

 2004 QCAD (main)Feature RequestLow Library Browser: configurable icon background color Closed
Task Description

Add preference for library browser icon background color.

2018QCAD (main)Feature RequestLowLayer visibility setting per view/view-portAssigned
2 Task Description

In a medium complex drawing it’s often too much details to have all layers in a drawing visible at once. Also, it is of great importance to be able to have a single model to avoid duplication of work and risk inconsistency.

So i would like to create a number of views where each view has selected layers visible (that makes sense for the purpose of the view) and then assign the views to different layout blocks (using view-ports) in paper-space to be able to setup printing of several views on the same page/PDF

This also means that view-ports would have to be aware of what view they are displaying (if any besides the standard-view).
This will then make it possible for printouts of different views with selected layers visible (different for each view and view-port) and still have only one model. Today this is not possible.

As it is today the only limited workaround is to set the layers you want to display, print/PDF of that viewport on separate page, and then change it for the next page, and so on. The big drawback is that you cannot have two different views/view-ports on the same page with different layers visible. Also, for large drawing it is painful to have to do a lot of manual setup for each rendering of the complete drawing.

2034QCAD (main)Feature RequestLowPaint Properties to include modifying linetype scales w...Assigned
Task Description

Previous Feature Request #1285, dated 2015, incorporated in QCADPro 3.24. I regularly adjust linetype scales on hidden, centreline and phantom lines to achieve the best appearance on the drawing when printed. I note the Paint Properties feature copies all the attributes of the chosen line but does not copy the scale. I have to change the scale of each line, even after ‘painting’. This copying all Properties is something AutoCAD does. I know I could change the line to Hidden2 etc. and tick the ‘scale lines’ box in Drawing Properties but that is not always successful- copying properties is a quick and useful way of achieving the required result.
QCAD Pro 3.24 Windows10.

2037QCAD (main)Feature RequestLowSupport alternative angle referenceAssigned
Task Description

E.g. 0 degrees at the top, clock-wise for positive direction, alternative angle units.

 2040 QCAD (main)Feature RequestLow Parallel and Offset tool - digit limit for Number to s ...Closed
Task Description

LP - Number limit:
2 digits (max. 99)

LG - Number limit:
2 digits (max. 99)

OF - Number limit:
3 digits (max. 999)

OH - Number limit:
2 digits (max. 99)

Yes I know - it’s also a performance question but compared to ...

... Copy/Move (MV)
next to infinite digits (max. ???)

... Paste Along Entity (PE)
next to infinite digits (max. ???)

 2044 QCAD (main)Feature RequestLow Filter selection entities according to more than one cr ...Closed
Task Description

At the moment there is no way to select all entities that match more than one criterion (i.e. layers, colours, object types, ..).

2056QCAD (main)Feature RequestLowOption Duplicate layer (yy) inclusive all sub-layers.Assigned
Task Description

If I’ve to duplicate a layer with a bunch of sub-layer it’s a kind of a Sisyphus task to get it done.
Currently I have to duplicate each single layer. Then in an additional step I’ve to address each child layer to the proper parent layer.

Current lack:
Marked parent layer with all sub-layer / Duplicate Layer / only ONE layer will be duplicated.

With other words: If I have to duplicate a layer with 5 sub-layer it requires 11 steps to get a copy of that tree ... :-(

2057QCAD (main)Feature RequestLowMultiline toolAssigned
Task Description

Implement a multiline tool.

2060QCAD (main)Feature RequestLowDialog box for Layer StatusAssigned
Task Description

So far, layer status has only been implemented very rudimentarily.
I wish something like a dialog box in which you can choose for each layer status, which layers belong to it and which not.

2070QCAD (main)Feature RequestLowcropping imageAssigned
Task Description

It may be useful to insert the “image cropping” function both in top / bottom - right / left mode, and with polyline

 2071 QCAD (main)Feature RequestLow Solid hatch fade Closed
Task Description

It may be useful to implement the fade function in solid hatches, as present in the image options

2087QCAD (main)Feature RequestLowMore options for "Paste along Entity" [PE]Assigned
Task Description

“Paste” has already the options: To current layer, Overwrite layers, Overwrite blocks.

Would be a nice time saver to have the same options for “Paste along Entity” too.

2091QCAD (main)Feature RequestLowToggle redrawing of hatches Assigned
1 Task Description

Because modifying hatches have lag issues I’d like to propose a toggle that turns of the redrawing/rendering of the hatch. Especially while modifying the hatch.

The hatches always have a boundary that can be worked with right? So when we move or stretch the hatch we can still see the boundary and its handles to perform all the actions.

This could be a new view mode that turns of the view of the interior/pattern of the hatch but leave the boundary of the hatch.
Or the draft mode can be extended to include simplified hatches while modifying.

Also see the discussion

2107QCAD (main)Feature RequestVery LowAdd a button to the tool bar to allow for a quick backg...Assigned
1 Task Description

I find myself with reasonable regularity needing to change the background color between black and white. It would be much more efficient to have a toggle button on the ribbon to make this sort of instant (kind of like the “screen based line types” button works but make it for background color and just between black and white or let people define their dark and light themes and toggle the background between the two.

 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.

 112 QCAD (main)Performance IssueLow Slow startup because of Library Browser Closed
Task Description
  • initial start (no library browser DB present)
  • Linux vostro #1 SMP PREEMPT 2011-04-25 21:48:33 +0200 i686 i686 i386 GNU/Linux
  • DWG / DXF files: 79
  • SVG files: 684
  • RDF files: 729
real    1m37.298s
user    1m35.101s
sys     0m0.806s
 169 QCAD (main)Performance IssueLow Image preview slow Closed
Task Description

Preview when inserting image slow

 201 QCAD (main)Performance IssueLow unable to move/dock command line Closed
Task Description

Cannot move/dock command line to right hand pane!



 233 QCAD (main)Performance IssueLow Slower selection / manipulation Closed
Task Description

Slower selection / manipulation compared to QCAD 2.

 244 QCAD (main)Performance IssueLow snap auto Closed
Task Description

Snap defaults to auto. Auto snap gets slow in areas where there are many places it can snap to.

 288 QCAD (main)Performance IssueLow opening dwg file takes very long [improved] Closed
Task Description

Opening a 4 MB dwg file results in no-response for about five minutes. Opening the same file with DraftSight takes less than five seconds.

 360 QCAD (main)Performance IssueLow Application Preferences - Shortcuts (slow) Closed
Task Description

In the “Application Preferences”-menu a click on submenu “Shortcuts and Commands” freeze the application for a view minutes.

 391 QCAD (main)Performance IssueLow Complex blocks: moving with drag and drop shows whole b ...Closed
Task Description

Complex blocks: moving with drag and drop shows whole block as preview (slow)

728QCAD (main)Performance IssueLowSlow loading of drawing with many block insertsAssigned
1 Task Description

Slow loading of drawing with huge number of block inserts (more than 10000).

 914 QCAD (main)Performance IssueLow Invert selection: poor performance Closed
Task Description

Inverting the current selection is significantly slower than select all, deselect all or other selection tools.

 1029 QCAD (main)Performance IssueLow Selecting many entities: poor performance Closed
1 Task Description

Selecting a great number of entities (>10000) can be slow, likely due to updating the property editor.

 1052 QCAD (main)Performance IssueLow (Isometric) projection: poor preview performance Closed
Task Description

Preview performance can be improved by projecting only once and then moving / pasting the projection.

 1115 QCAD (main)Performance IssueLow Windows: slow file dialogs Closed
Task Description

Windows 7 Professional 64bit SP1

File > Open shows empty dialog for 1 minute, then shows dialog contents.

 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.

 1315 QCAD (main)Performance IssueLow Snap > Auto Snap: slow when snapping to complex polylin ...Closed
Task Description

See also:

 1497 QCAD (main)Performance IssueLow Autosnap: hangs with very complex splines Closed
Task Description

Splines with hundreds of control points or fit points can cause hangs when using auto snap near them.

 1606 QCAD (main)Performance IssueLow Selecting 'Draw Order' halts system temporary Closed
Task Description

Merely clicking on ‘Draw Order’, and usualy unintended, halts the system for several seconds up to several tens of seconds.

Intel(R) Core(TM) i7-2600K CPU @ 3.40Ghz
4,00 GB RAM installed 3,49 GB usable
32-bit Operating System
Windows 7 Professional SP1

 1662 QCAD (main)Performance IssueLow Select > Select Contour: slow for complex drawings Closed
Task Description


when working with files containing many not connected elements (non-poly-line elements) a double click can cause a coffee-break easily. The search for connected entities easily takes over 5 minutes on an up to date machine ([email protected]) with files that are pretty standard in size (2 or 3 MB file size ascii dxf). Adding an interruption-method would be suitable (for example by pressing escape).

attached a file with a polyline of 13000 entities and a second file with just everything duplicated. When exploding the polyline and double clicking an element it takes quite a while until all elements are selected. (this is not an extreme example, I had sometimes 10 minutes of waiting with slightly bigger files, accidently double clicking something).

also an improved algorithm for the search would help to speed up the selection. (e.g. divide the area in smaller parts, do the search there, or an option to search only in the visible view port of the document)


 1693 QCAD (main)Performance IssueLow Formatted text is not correctly displayed Closed
1 Task Description

Texts justified and/or formatted in dxf or dwg files generated by Autocad not presented correctly when the file is opened by QCad, follow file for verification.

1801QCAD (main)Performance IssueLowlow perfomance in paper space and viewportsAssigned
Task Description

Improving the performance of the exceptional use of the processors when switching from the model to the paper space (testing with the attached file) the functionalities of the commands for the viewports are too low in the paper space.

 1984 QCAD (main)Performance IssueLow Block > Create Block from Selection: Slow for large num ...Closed
Task Description

See also:

2021QCAD (main)Performance IssueVery LowCannot work with big dwg filesAssigned
Task Description

Openning a big file or doing any action in it, takes minutes to load.
Even dragging the scrollbar slightly left or right, takes mintues to redraw the canvas again, which makes QCAD un-usable for professional use.
Is there a way to make QCAD usable, after loading completed:
- Like suppressing edit until user says so,
- or taking snapshots of rendered canvases to another file and use it, as windows uses thumb.db ( for negative latency :P )

PS: I wish I could help a bit, but my hand are tied. I am just a java freak, I am opt to any idea of porting it to java, if she is still alive.

Tu─čalsan Karabacak
EEE, MSc Mobile Comp & App, IWE

2063QCAD (main)Performance IssueLowBad performance while zooming inside layout block with ...Assigned
1 Task Description

Zooming in and out is lagging to the point of unusable. This is happening in a layout block with the cursor pointing inside geometry with hatches. When the cursor is pointing outside the geometry zooming works as expected.
The attached file has a very simplified testcase that shows this problem almost in the same way as a more complex drawing with multiple layers and hatches.

edit: I also attached the more complex drawing because it is a bit unclear to me where the lagging stops. Outside the viewport or outside the paper.

I just noticed the selection box has the same problem!

 137 QCAD (main)RefactoringLow SVG Export precision Closed
Task Description

In files exported with the (even PG) exporter I sometimes see values like these: 334.99999999999994 or 570.0000000000001 and very often 12 digits of precision.

To safe on file size, I suggest, that QCAD rounds values on SVG export to eg. three places. When viewed in an ordinary web browser, that will result in a precision of 1 inch / 96dpi / 1000 = 0.00026mm, not? Ends should still meet.

 138 QCAD (main)RefactoringLow SVG Export entity properties "By Layer" and "By Block" Closed
Task Description

If I understand correctly, SVG export uses svg groups to keep QCAD block entities. This in itself is very useful. There is no way to correctly keep layer information, as QCAD blocks can contain elements on different layers, while SVG only knows about groups. That is a deficiency of SVG.

To save on file size, there was some potential to get rid of ever repeating same attributes on entities, eg: style=”stroke:#000000;stroke-width:0.25;stroke-dasharray:2.16,1.08”

To optimize “By Block” is easy: just set the attribute on the SVG group, and omit on below entities styled “By Block”.

To optimize “By Layer” is a little more involved, but might be solved by using css:
- Create a class by the name of the Layer
- add the class attribute to elements styled “By Layer”

Then only individually styled entities would get a style attribute, and filesize of SVG could be halved in most cases.

This just an idea :) Having written this, I now realize, that QCAD can style weight, pattern, color each extra, so the optimazition could only be applied to entities, where everything is “By Layer” or “By Block”. But that should be the case most of the time.

 146 QCAD (main)RefactoringLow cloning entities: optional ID cloning Closed
Task Description

add parameter to REntity::clone to allow cloning without cloning object ID.

 610 QCAD (main)RefactoringLow replace QMdiArea with QTabBar and QWidgetStack Closed
Task Description

QMdiChild widgets in an QMdiArea receive repaint and mouse events even if they are not active which slows down the user interface when having multiple MDI children open.

Long term, QMdiArea might have to be replaced with something else.

 1056 QCAD (main)RefactoringVery Low Dead and wrong code in RSPlatform.cpp Closed
Task Description

I am considering pushing the following diff:

--- a/src/core/RSPlatform.cpp
+++ b/src/core/RSPlatform.cpp
@@ -205,25 +205,6 @@ int RS::getCpuCores() {
     cores = sysinfo.dwNumberOfProcessors;
 #elif defined(Q_OS_UNIX)
     cores = sysconf( _SC_NPROCESSORS_ONLN );
-#elif defined (Q_OS_MAC) || defined (Q_OS_BSD4) || [...]
-    nt mib[4];
-    size_t len;
-    /* set the mib for hw.ncpu */
-    mib[0] = CTL_HW;
-    mib[1] = HW_AVAILCPU; // alternatively, try HW_NCPU;
-    /* get the number of CPUs from the system */
-    sysctl(mib, 2, &cores, &len, NULL, 0);
-    if (cores < 1) {
-        mib[1] = HW_NCPU;
-        sysctl( mib, 2, &cores, &len, NULL, 0 );
-    }
-#elif defined(Q_OS_HPUX)
-    cores = mpctl(MPC_GETNUMSPUS, NULL, NULL);
-#elif defined(Q_OS_IRIX)
-    cores = sysconf( _SC_NPROC_ONLN );

(truncated list to manage size)

I see that most of this was put in there as a kind of a note-to-self originally, however _SC_NPROCESSORS_ONLN is implemented by every realistically possible targets anyway, so for all practical purposes, this is dead weight.

A couple of questions remain, though:

  • #ifdef Q_OS_WIN32 should probably be Q_OS_WIN, so as to include win64 as well.
  • Assuming the real purpose for this function is to determine how many parts a particular task is to be split into in the future, if and when QCAD gets the need to split expensive tasks among multiple CPUS, “core” probably shouldn’t be static - CPUs are hot-pluggable today, and while one probably doesn’t do that on a laptop, it’s not unfeasible in, say, a VDI environment.


 26 QCAD (main)ReleaseLow Release Tasks Closed
Task Description


  • developer menu
  • tests scripts

Adjust Version


  • “About” dialog (automatic)
  • reference manual: support/doc/manual/about.txt / about_de.txt
  • scripts/splashscreen.png
  • scripts/Tools/LibraryBrowser/splashscreen.png
  • src/core/RVersion.h
  • library browser DB file name in LibraryBrowser.js, LibraryBrowser.getDbFile()


  • Linux Deployment (support/deployment/linux)
    • deploy.sh: change RUN_FILE, TARGZ_NAME
    • setup.sh: change SETUP_INSTALLPATH
  • Mac OS X:
    • deploy.sh: DMGNAME
    • src/run/Info.plist
    • src/run/InfoLibraryBrowser.plist
    • src/run/InfoTrial.plist
  • Windows:
    • qcad_installer.nsi
    • qcad_trial_installer.nsi

Don't forget

  • file “readme.txt”
    • adjust “Known limitations”
  • update QCAD Application Framework API
  • svn tag revision
  • add version to bug tracker

Check List

  • run automatic tests
  • designer plugins qwebkit (libqwebview.so)
  • text with CAD font
  • hatches
  • insert image
  • user interface translations
  • help (Qt Assistant client)
    • help translations
  • library browser
    • drag-n-drop insert from library browser
  • help - contents
  • help - check for updates
  • templates
  • initial launch (without ini file)
  • printing
  • PDF generation
  • SVG export
  • loading / saving files
  • Help - Show Readme (can file readme.txt be found?)
  • Qt libraries not in debug mode, QCAD binary does not link against debug Qt libraries
  • command line tools


  • Mac OS X Snow Leopard & Lion (10.6 & 10.7)
  • Mac OS X Leopard x86 (10.5)
  • Mac OS X Leopard ppc (10.5)
  • Linux 32bit
  • Windows 32bit

Plus maybe later:

  • Mac OS X Tiger (10.4)
  • Linux 64bit
  • Windows 64bit
 1328 QCAD (main)ReleaseLow Windows 64bit install dir Closed
Task Description

I only noticed today (perhaps they were available earlier?) that there are 64 bit binaries for windows; I suppose these are true 64 bit.

Yet, the installer prompts me to put them into “Programs (x86)”, where all the 32bit software lives, I guess - this seems to be a pure convention though, the application runs just fine.

Maybe the reason is, that the 32bit version was installed before; Maybe it should change? Maybe it should stay, so that there are not two?

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