User Activity

I have created a button in qt when I click on the button it has to create a pdf and also display the pdf.i am developing an application where i have to store the user data in pdf called report and later view it please give me the steps on how to perf...
Can someone suggest me a best gui application as i am using stm32mp157d-dk1
hiwhy is the wiki page removed on (X-LINUX-QT How To build Qt applications using STM32CubeIDE)please give me some explanantion or any blogs on How To build Qt applications using STM32CubeIDE 
could someone help me on how to integrate qt with cubeide because i want to access the dac when button is clicked it has to write to dac
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