Looking to call a function withour user intervention

bart.hollis

@SGaist said in Looking to call a function withour user intervention:

Hi,

Some something like:

"show widgets"

Start method while widgets are visible

?

Yup! That's what I want to do, but can't seem to find something, or one of the widgets that will trigger the function. Wish I could get into the actual loop! :)

SGaist

Use a QTimer::singleShot with a value of 0 for the delay, then you'll have your GUI running and the method called right after the first round of the event loop.

bart.hollis

@SGaist said in Looking to call a function withour user intervention:

Use a QTimer::singleShot with a value of 0 for the delay, then you'll have your GUI running and the method called right after the first round of the event loop.

Could you please give me more detail as how to implement this?

SGaist

Same as usual except that you use 0 as timeout value and you call that as the last thing in your constructor.

JonB

@bart.hollis
I suggested you look at https://stackoverflow.com/a/38749911/489865 or which does actually give code for using QTimer::singleShot.

bart.hollis

@SGaist said in Looking to call a function withour user intervention:

Same as usual except that you use 0 as timeout value and you call that as the last thing in your constructor.

That would be the MainWindow constructor?

Then, do I understand correctly that I use the slot mentioned to trigger my function?

From Docs: QTimer::singleShot(200, this, SLOT(updateCaption()));

bart.hollis

SGaist
Your suggestion works just as I want! Now, I just need to understand WHY! :)

bart.hollis

Now, I need to mark this thread as solved. I know how to do that!
But I should click something that gives points to reputation. I know I saw that somewhere! (mutter, mutter, mutter) I hate when I don't know what I'm doing!

Anyway, Thanks SGaist! Very Much!

aha_1980

@bart.hollis

You can upvote a post with the small up arrow right below each post. The down arrow is for downvoting (and should be used in rare cases). The number in between the both shows the current voting for a post and are therefore a sign for it's quality.

Regards

bart.hollis

AHA! (Not trying to steal your handle!) Thanks!

aha_1980

@bart.hollis You're welcome :)