每个QFont都有新的QFontDialog吗？

Question

How can I change different fonts for 2 (or more) QFont, if I have only one QFontDialog? How can I do it more efficient? Creating new QFontDialog for each QFont will be very stupid, I think.

Answer 1

If you want to do this simultaneously, you need to add two QFontDialog to your form. Otherwise you can use the one QFontDialog object and simply set current font using setCurrentFont() before showing the dialog.

Answer 2

So, creating QFontDialog for each QFont isn't optimal method (too many - over 100 - QFont-s and QFontDialog-s will take a lot of memory). More efficient - creating specific SIGNAL-S and SLOT-s for QFontDialog and QFont (in my situation it is FontChooser (modified QLineEdit), that recieve QFont info from QFontDialog) like this below:

QObject::connect(&fontdialog, SIGNAL(font_selected(FontChooser *, const QFont &)), &fontchooser, SLOT(set_font_info(FontChooser *, const QFont &))); 
QObject::connect(&fontchooser, SIGNAL(clicked(FontChooser *, const QFont &)), &fontdialog, SLOT(show(FontChooser *, const QFont &)));

When I posted this question, I thought, that Qt have some easy func-s to do that. May be I am wrong? :) Problem was solved. Thx.