Reader update

This time the main update of the reader

1. Add a launcher
Support double-clicking the file to open
Under C:\Program Files (x86)\Steam\steamapps\common\ComicPictureShelf
CPLauncher.exe is the launcher
File associations can be set by setting the common settings


2. Reader top label modification


3. The software window has no border

4. Background settings
Settings General Settings Set Background

5. Setting page modification

6. Other minor modifications