random color and lineedit

[ChrisW67]

What happens when you single-step through this code in your debugger? What do you think line 13 does?

[smemamian]

What do you think line 13 does?

When the user does not enter a string in qlineedit1 :-?

qlineedit.jpg

[BalaQT]

use isEmpty() to check the LineEdit text
ex:

if( !stirng.isEmpty())
{
.............
}

if( !stirng.isEmpty())
{
.............
}

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