C++ Qt 04 - Signals and Slots

Learn about QT signal and slots, very easy and very powerful

Category:

Education

Tags:

• QT
• 04
• Signals
• and
• Slots

[VoidRealms]

Errata (from offical Qt forums):

01:05 You must not select anything to successfully apply a layout to a toplevel widget! In fact, your layout does not make the widgets expand to fill the available space like they should, but you must resize the layout manually

03:22 Q_OBJECT macro has nothing to do with the fact you can use the connect method (it doesn’t “provide” it or so), and connect is not a macro but a method of the QObject class

[LordOfer]

People like the author of this tutorial make the internet and the world a better place :)

[comvnche]

The receiver bar is a slut ;)

[ishu161]

Love this tutorial. Thanks!!

[KAHNonymousjohn]

1 person was piped to /dev/null.

[RiftStuff]

somehow when i press ctrl+space the horizontal slider and setvalue int thing won't appear in that box, any solution for this please?

[paulanon]

@joniii247 any update on this? i'm having same issue. thanks.

[yanike]

Thank You :)

[joniii247]

My program is compiling and running fine, but I keep getting link errors. here is the error output:

------------------------------­------------------------------­-------

qtmaind.lib(qtmain_win.obj):-1­: warning: LNK4099: PDB 'vc_ib_1.pdb' was not found with 'c:\QtSDK\Desktop\Qt\4.7.4\msv­c2008\lib\qtmaind.lib' or at 'C:\Documents and Settings\Administrator\My Documents\qt\gui2-build-deskto­p-Qt_4_7_4_for_Desktop_-_MSVC2­008__Qt_SDK__Debug\debug\vc_ib­_1.pdb'; linking object as if no debug info

-------

[cubiq1]

Thanks for the tutorial, 10/10!

[biddut]

its very good and better than troll