How to transfer data sequence between forms in Qt
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Assume I have 2 forms in a Qt application. I need to transfer data between 2 forms many times so I used the loop to do this. I just wanna get result from Form 2 before Form 1 is continue to loop. This is my desired intention:
!http://i249.photobucket.com/albums/gg220/HienBoo/form2.png(Transfer data)!
When I used the loop normally, the loop began at i = 1 and sent data to Form 2. Before Form 2 returned result to Form 1, Form 1 was continue to send data with i = 2.
Could you give me some solutions?
Thanks!
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Hi, can you tell us which problem you have encountered?
@
for (int i=0; i<3; ++i)
ret = form2.doSomething();
@ -
[quote author="monsingh" date="1375164656"]for(int i = 0; i < 5; i++)
{
callToFunction2();
qApp->processEvents();
}processevents is wait till we get the restult from form 2.
[/quote]No it won't, processEvent will just process the pending events.
Like 1+1=2 suggested, all the processing should be done before the function returns
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Hi SGaist,
try this small program: we get the order of execution.
write the for loop in construcor
for(int i = 0; i < 5; i++)
{
qDebug() << callToFunction2(i);
qApp->processEvents();
}int MainWindow::callToFunction2(int i)
{
qDebug()<< "order :" << ++i;
return 5;
} -
Wait, we are not understanding each-other right.
Do you mean that processEvent will be called after callToFunction2 has returned ? In that case I agree
PS: please enclose your code with coding tags to make it readable
