why the mac App UI look blurry when use Qt framework develop mac App

[Princein]

Hi:
I developed a mac app use the Qt framework in Xcode, after developed, I run it, but the UI look blurry, even the mac system open file dialog looks blurry too:
here is the mac system openfile dialog picture when I use my App :

here is the mac system openfile dialog picture when I use the mac system App 'TextEdit':

the mac system openfile dialog picture when I use the mac system App 'TextEdit' is better, in my App, I don't write any change the mac resolution code at all, why my app look blurry and affect the system openfile dialog? and how to solve it?

[aha_1980]

Hi @Princein,

• which macOS version?
• which screen resolution?
• which Qt version?
• how do you open the file dialog from your code?

Regards