QT qlabel style settings

Need to set up error The style of

Set the style

color:rgb(255, 0, 0);
font-size:12pt;
font-family:Microsoft YaHei;

typeface 、 Color is also available through Rich text Set in the program

emit LoginError(QStringLiteral("<font style='font-size:12px; color:red;'> user name 、 Wrong password ！</font>"));

for example ：

Implementation method ：

ui.mSizeLabel->setText(QStringLiteral("< font style='color:black; font-weight:normal;'> Saved  </font>") 
+ "< font style = 'color:#5B8FF9; font-weight:bold;'>"+QString::number(_currSize) 
+ "< / font > "+ QStringLiteral("< font style='color:black; font-weight:normal;'>  Zhang </font>" )); 

Center text , Use qt Of Designer, Set horizontal and vertical center