I wrote a simple program to understand QLoggingCategory class.

I found with the following 2 statements.
QLoggingCategory category("qtCustom.log");
qCDebug(category) << "main a debug message";
The QT Application output pane shows:
qtCustom.log main a debug message

But when I change them to :
QLoggingCategory category("qt.Custom.log");
qCDebug(category) << "main a debug message";
then QT Application output pane shows nothing.

Does anybody know the reason?