public static extern bool GradientFill([In] IntPtr hdc,
[MarshalAs(UnmanagedType.LPArray, ArraySubType = UnmanagedType.Struct, SizeParamIndex = 2)] TriVertex[] pVertex,
uint nVertex, GradientRect[] pMesh, uint nMesh, GradientFillMode ulMode);
/// <summary>
/// The GradientFill function fills rectangle and triangle structures
/// </summary>
/// <param name="hdc">Handle to the destination device contex</param>
/// <param name="pVertex">Array of TRIVERTEX structures that each define a triangle vertex</param>
/// <param name="nVertex">The number of vertices in pVertex</param>
/// <param name="pMesh">an array of GRADIENT_RECT structures in rectangle mode</param>
/// <param name="nMesh">The number of elements in pMesh</param>
/// <param name="ulMode">Specifies gradient fill mode</param>
/// <returns>If the function succeeds, the return value is true, false</returns>
public static bool GradientFill([In] IntPtr hdc, TriVertex[] pVertex, uint nVertex, GradientRect[] pMesh,
uint nMesh, GradientFillMode ulMode)
{
return Native.GradientFill(hdc, pVertex, nVertex, pMesh, nMesh, ulMode);
}