下载图标:
https://www.easyicon.net/1171997-designer_qt_icon.html
sudo cp qtdesigner.ico /usr/local/share/applications/
[Desktop Entry]
Name=qtdesigner
Exec=/home/tqc/anaconda3/bin/designer
Icon=/usr/local/share/applications/qtdesigner.ico
Terminal=false
StartupNotify=true
Type=Application
sudo cp qtdesigner.desktop /usr/local/share/applications/