Qt QPainterpath.h errors

Question

I am currently working on a Qt application with many #include files from the Qt library. The project is quite large and I have encountered a strange problem when building. The errors displayed are all inside the QPainterpath.h file, but has nothing to do with calls to it from my project. The errors all look like this:

c:\qt\4.8.4\include\qtgui../../src/gui/painting/qpainterpath.h(397) : error C2143: syntax error : missing ';' before '::'

c:\qt\4.8.4\include\qtgui../../src/gui/painting/qpainterpath.h(397) : error C2059: syntax error : '::'

c:\qt\4.8.4\include\qtgui../../src/gui/painting/qpainterpath.h(398) : error C2143: syntax error : missing ';' before '{'

c:\qt\4.8.4\include\qtgui../../src/gui/painting/qpainterpath.h(398) : error C2447: '{' : missing function header (old-style formal list?)

c:\qt\4.8.4\include\qtgui../../src/gui/painting/qpainterpath.h(405) : warning C4003: not enough actual parameters for macro 'elementCount'

I encountered this once before and was able to solve it by moving some Qt #include statements called before other class headers below them. I can't seem to figure out what in particular is causing it this time though. Any thoughts would be great!

Thanks!

Answer 1

I've seen this happen when you forget to close a class definition with a semicolon. If you look at the output from the compiler, and see which file was compiled right before this error started, you may have your answer. Look for syntax errors with missing a ; or an extra } or a missing } at the end of the previously compiled file.

It could also be from a .h file listed above your #include <QPainter> call that has the errors.

Hope that helps.

Answer 2

I'm working with RyGuyFalcore and figured out why this is happening in our code, and nobody else is seeing it. The issue is that our legacy code was redefining the elementCount macro. Therefore, if we included that portion of our legacy code before we included the Qt code, the wrong macro was getting used :( Figured I would post this here to avoid any wild goose chase that others may run into if they hit a similar bug.