C++ Qt 04 - Signals and Slots

[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?

[comvnche]

The receiver bar is a slut ;)

[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

-------

[paulanon]

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

[cubiq1]

Thanks for the tutorial, 10/10!

[biddut]

its very good and better than troll

[LordOfer]

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

[LaTaye2]

i keep getting the error message that the pushbutton is not in the library with i try coding please help

[twilihgtn]

Nice to hear your voice. Your english is pretty good for understanding by the noob in programming, speaking russian :)

[TEUFELEFUET]

THANKS BRO FOR YOUR TIME...NICE TUTO...

[CanMartin]

i tried to disconnect progressBar if(ui->progressBar->value() >= 50) but it didn't work... how do i have to change my code to make it work

[SaintBelmont]

fix your cursor!!!!!

[TheSloppypapi]

yo good tutorial!!!

[7337cod3r]

ui->setupUi(this);

//if you write the connect above this statement the programm wont execute why is that

while if you write the connect (..); below the above code it works fine ....I mean why is that the order matters.

[smmirzadeh]

@7337cod3r The ui is not created prior to calling setupUi(this). What it does is basically creating all the widgets in the ui (slider and progress bars here) so that you can call and modify them later. Before this function call, non of the widgets exist yet and so you cannot call the connect function

!

[ACBoredz]

Thanks for the tutorial!

[RealSourceryd]

very nice video and powerful IDE ... thanks dear ...

[b00n90]

thx

[hammadghulam]

signal >>>>>>>>>>>>>> slot

[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