Icon button tooltips

vite/src/pipedal/UploadFileDialog.tsx

@@ -32,7 +32,7 @@ import SvgIcon from '@mui/material/SvgIcon';
 //import ErrorIcon from '@mui/icons-material/Error';
 import ErrorOutlineIcon from '@mui/icons-material/ErrorOutline';
 import ArrowBackIcon from '@mui/icons-material/ArrowBack';
-import IconButton from '@mui/material/IconButton';
+import IconButtonEx from './IconButtonEx';
 import CheckCircleOutlineIcon from '@mui/icons-material/CheckCircleOutline';
 import CircularProgress from '@mui/material/CircularProgress';
 
@@ -372,10 +372,10 @@ export default class UploadFileDialog extends ResizeResponsiveComponent<UploadFi
             >
                 <DialogTitle >
                     <div>
-                        <IconButton edge="start" color="inherit" onClick={() => { this.handleCancel(); }} aria-label="back"
+                        <IconButtonEx tooltip="Back" edge="start" color="inherit" onClick={() => { this.handleCancel(); }} aria-label="back"
                         >
                             <ArrowBackIcon fontSize="small" style={{ opacity: "0.6" }} />
-                        </IconButton>
+                        </IconButtonEx>
                         <Typography display="inline" >Upload</Typography>
                     </div>
                 </DialogTitle>