if else to switch case for GUI

Amine Djeddi

hi my freinds i working on image processing project , works fine ... but i want to move to SWITH CASE insread of IF ELSE ...

if (ui->medianbur->isChecked())
{ // program works fine ...
}

is this correct :
switch () // no argument yet ...
case : (ui->medianbur->isChecked())
{ // put the same program here....
}

jsulm

@Amine-Djeddi The syntax of your switch is wrong, but this is completely unrelated to Qt.
One more thing: switch does not make sense when using with binary conditions. isChecked() returns a boolean, so you will have exactly 2 possibilities. Why do you want to use switch here? switch makes sense if you have many posibilities to check.

Amine Djeddi

yes i have more than 2 possibilites like :

if (ui->medianbur->isChecked())
{ // program works fine ...
}
if (ui->Grayscale->isChecked())
{ // program works fine ...
}

if (ui->cannymode->isChecked())
{ // program works fine ...
}
i want to convert this into switch case ,

im blocked here :

switch (ui->medianblur->isChecked())
case true :
{

	// programme work fine 
}

JonB

@Amine-Djeddi
As @jsulm stated, it is pointless/unhelpful to use a switch against a condition which is boolean (values true or false). Use an if, possibly with an else. If necessary you can use:

if (...)
    ...
else if (...)
    ...
else if (...)
    ...
else
    ...

Or, you can combine your conditions with && and ||s.

There is nothing about what you have shown which would benefit from a switch().

Amine Djeddi

ok i got it , thank you @jsulm and @JonB for make things clear