QT program font becomes larger on computers with different resolutions, overflowing controls

Preface

In the recent development process , Found running locally QT Program , There is no problem with the display interface , But on other computers, the font has become larger , Overflow control phenomenon .

• The local operation display is normal , The font can be displayed normally .
  
• Run on other computers , The font display is abnormal , Change in size , Overflow control .
  

reason

Qt Font in Qfont There are two ways to define font size , One is PointSize, The other is PixelSize.

• PointSize The unit of is not pixels , It is based on the actual size of the font displayed on the screen , It is related to the resolution of the screen and the real size of the screen , That is, its unit is the font size displayed on the screen .
• PixelSize It's actually in pixels , namely PixelSize The size of is the actual pixel size .

Development process ,QT The default is PointSize How to set it up , So the font size will appear on computers with different resolutions 、 Abnormal position of the control .

terms of settlement

1.main Function to set the global font

	QFont font(QStringLiteral("Tahoma"));   // Set a font 
	font.setPixelSize(12);                  // font size , Equate to PointSize Of 9 Point size 
	qApp->setFont(font);

2.QT Creator Add style sheets to

• stay QT Creator Of UI Right click the interface , choice “ Change the style sheet ”

• single click “ Add the font ”
  
  Be careful , The default font used here is PointSize, Need to change to PixelSize, hold 9pt Change it to 12px that will do .
  
  

effect

Run again , The interface display returns to normal .