qt 字体不随dpi,更改显示器的DPI缩放大小会使Qt应用程序的字体大小变大

I have created some GUI application using Qt. My GUI application contains controls like push button and radio button. When I run the application, buttons and fonts inside button looks normal. When I change the DPI scaling size of display from 100% to 150% or 200%, font size of controls rendered bigger but not control size (pushbutton, radio button) irrespective of resolution. Due to this the text inside controls were cut off. please see the attached image.

Qt application look when DPI scaling size set to 100%

Qt application look when DPI scaling size set to 200%

I am running my application in some tablets also. In tablets, DPI scale value should be more than 150% else everything will be shown very small