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OpenXLSX column width

Hello! I am trying to set column width but it doesn’t work. Any comment will be helpfulimage.png (20.5 KB)

@Maksim_Orlov,

It might be an issue with the API you are using. We suggest you to try Aspose.Cells APIs (you may choose your desired API for your environment/platform) instead. See the following sample code using Aspose.Cells for Java API to perform your exact task, it works fine and as expected with it:
e.g.
Sample code:

Workbook workBook = new Workbook("f:\\files\\Book1.xlsx");
//Get the first worksheet
Worksheet worksheet = workBook.getWorksheets().get(0);
//Get the column width of the first (A) column
System.out.println(worksheet.getCells().getColumnWidth(0));
//Set column width
worksheet.getCells().setColumnWidth(0,  150);
//Get the updated column width of the first (A) column
System.out.println(worksheet.getCells().getColumnWidth(0));

Hope, this helps a bit.