Qt FAQ

1 added a button control, the running program does not display this button

Delete the corresponding build files and rebuild.

2 Qprocess and exe with directory

For example, the qt program directory is .\, the exe is in .\calc\a.exe, and there are also a.exe dependent files, input files, etc. in the calc\ directory.a.exe cannot be executed without these files.How can I successfully execute a.exe.

qprocess can only set the a.exe directory. If a.exe default dependent files and input files are in the calc subdirectory, it will not work properly.How to solve this?

3 qt signals and slots

There are many ways to write connect, you can use the SLOT and SIGNAL macros (generate the corresponding string?), or you can use the function pointer.You need to declare and define the object before you can connect.connect can be used anywhere, as long as the object is accessible.

4 qwebengineview

The parent window of qwebengineview can be any widget, or it can be empty.But if it is widget or centralwidget, the displayed web page is very small.do not know why?If it is empty, a new window will be opened and the display will be normal.