Need a little help with QPushButton & connect

mrjj

@mrmorph
aha, studio express. so you are not using the qt plugins.
Im not so deep into using visual studio but I know sometimes its need to manually add compile step to run
moc.exe tool that generate meta info for qt signal system etc.
.
Test by 1:delete all moc files. and clean build folder.
then rebuild all. if moc files comes back, all ok. if not
then its using the moc file from long time ago and might not know about your slot. (dothis)

http://stackoverflow.com/questions/15465932/using-qt-with-visual-studio-without-add-in

Note: Im not 100% in what cases moc are run as using creator its automatic.

its just a tool so you can run it by hand
http://doc.qt.io/qt-5.5/moc.html

if its not running moc.exe, it would explain the strangeness :)

mrmorph

Ok thanks I'll give that a go then.

I need to get some sleep, so I will do it tomorrow.

Many thanks for taking the time to help me, it's much appreciated :)

Take care,

Rog.

mrjj

@mrmorph
well same here.
My money is on moc files :)
you are welcome.
Take care too

Just for test i used your code as QDialog and button just worked
http://postimg.org/image/7rjevwz15/

JKSH

@mrmorph said:

I think you might be onto something with the moc file - I wasn't sure if I even needed that. I am using Visual Studio Express, so I'll have to find out how to use moc files then and try that.

You definitely need moc. All of the features listed at http://doc.qt.io/qt-5/metaobjects.html (including signals and slots) require moc to work.

VS Express is rather limiting. What version of VS are you using? Are you able to switch to Visual Studio Community Edition instead? If so, you'll be able to use the Qt Visual Studio Add-In, which makes your life much much easier. See http://doc.qt.io/vs-addin/

Or, even better, could you use Qt Creator to develop your plug-in? Qt Creator can use the Visual Studio compiler.

mrmorph

I thought what the heck I will spend a minute seeing what was going on.

Like I said I started building it in Qt Creator, then moved it over to Visual Studio, but kept it all in one folder.

So I remembered I could load it all up in Qt Creator still. So I re-built it in Qt to get the C++ source files and then I built those in Visual Studio.

Anyway, Qt Creator rebuilt the moc and it worked :)

http://i799.photobucket.com/albums/yy275/Rogad/misc/yay_zpsabp2qac2.png

So big thanks to you for narrowing it down to this. I have to remember to get Creator to rebuild the moc file when I add slots.

Very happy, thank you very much :)

EDIT : Ahh and I see you got it to work right too.

Hi JKSH,

Thanks for that. Yes I am using Community, sorry I've been using the name Express for so long, I just auto-typed it.

And I am using Qt Creator as mentioned above. I'll take a look at the Qt Visual Studio Add-In tomorrow, thanks.

Cheers both, so nice to nail that one.

mrjj

\o/
it was a sneaky one :)

mrmorph

@JKSH said:

Qt Visual Studio Add-In

HI again, just tried this but it says it did not find anything compatible. I tried the Qt4 version because I am using Qt 4.8.1 and I tried the Qt5 version but neither install. Perhaps I downloaded the wrong ones.

Also, I can't figure out how to make this topic solved.

Many thanks.

mrjj

@mrmorph
hi
use the Topic Tools button to mark as Solved.
its sort of below topic (first one) and to the right.

mrmorph

Yep tried that, all I see is this...

http://i799.photobucket.com/albums/yy275/Rogad/hmm_zpsgkxjvof6.png

mrjj

@mrmorph
hi its not the gear
its near reply button and sort by.

mrmorph

Got it, sorry I was looking in the wrong place, thanks.

mrjj

@mrmorph
well you are NOT the first to not see it.