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QT add external font ttf

2022-04-23 18:15:00 【Talent、me】

Get local font

#include <QFontDatabase>

QFontDatabase fontbase;
// Traverse local font 
foreach (const QString &fontfamily, fontbase.families()) {
    
    qDebug()<<fontfamily;
}

Set the font used by the program

//"DejaVu Sans Mono" This is one of the word libraries found by the last traversal 
QFont font("DejaVu Sans Mono");
QApplication::setFont(font);

Add external font ttf To the system font

Because my program is in arm Executed under , So first we need to find font The path where the font is stored .
The path of my development board is /usr/lib/fonts . Put the word library under this path and give permission :chmod 777 xxx.ttf

following kacstOne It's my transplanted font
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