Parameters
- firstRectangle
- First rectangle to union.
- secondRectangle
- Second rectangle to union.
Return Value
A VintasoftRect structure that contains both of the two rectangles that form the union.
Target Platforms: .NET9; .NET 8; .NET 7; .NET 6; .NET Framework 4.8, 4.7, 4.6, 4.5, 4.0, 3.5