Gets or sets the style of the filling. Possible values are
| Value | Meaning |
| 0 | transparent |
| 1 | solid / fixed color |
| 2 | horizontal gradient (only for PropertyFillingExt) |
| 3 | vertical gradient (only for PropertyFillingExt) |
| 4 | horizontal two part gradient (only for PropertyFillingExt) |
| 5 | vertical two part gradient (only for PropertyFillingExt) |
Platforms: Windows 10, Windows 11, Windows Server 2016 - 2025
.NET: .NET Framework 4.8, .NET 10, .NET 11