private static void StructAndArraySamples()
{
PInvokeWrapper.DisplayBetterCar(new Car2()
{
Car = new Car()
{
Color = "Black", Make = "Toyota"
},
PetName = "Blacky"
});
foreach (var car in PInvokeWrapper.GiveMeThreeBasicCarsHelper())
{
Console.WriteLine(car.Make);
}
var cars = new CarStruct[3];
PInvokeWrapper.FillThreeBasicCars(cars);
foreach (var car in cars)
{
Console.WriteLine(car.Make);
}
var makes = new string[3];
int length = 0;
PInvokeWrapper.GiveMeMakes(out makes, out length);
}
// Helper function to consume imported GiveMeThreeBasicCars function
public static IEnumerable <Car> GiveMeThreeBasicCarsHelper()
{
const int size = 3;
var result = new List <Car>(size);
// Pass in an IntPtr as an output parameter.
IntPtr outArray;
PInvokeWrapper.GiveMeThreeBasicCars(out outArray);
try
{
// Helper for iterating over array elements
IntPtr current = outArray;
for (int i = 0; i < size; i++)
{
// Get next car using Marshal.PtrToStructure()
var car = Marshal.PtrToStructure <Car>(current);
result.Add(car);
// Calculate location of next structure using Marshal.SizeOf().
current = (IntPtr)((int)current + Marshal.SizeOf <Car>());
}
}
finally
{
// Free memory for the allocated array.
Marshal.FreeCoTaskMem(outArray);
}
return(result);
}
private static void CalculationFunctionExample()
{
Console.WriteLine(PInvokeWrapper.AddNumbers(1, 2));
var source = new[] { 1, 2, 3 };
Console.WriteLine(PInvokeWrapper.AddArray(source, source.Length));
}
private static void Win32Samples()
{
PInvokeWrapper.DisplayMessage(0, "Hello World!", "Greeting", 0);
PInvokeWrapper.DisplayMessage(999, "Hello World!", "Greeting", 0);
Console.WriteLine("Last Win32 Error: {0}", Marshal.GetLastWin32Error());
Console.WriteLine(new Win32Exception(Marshal.GetLastWin32Error()).Message);
}
private static void ClassSamples()
{
var miniVan = PInvokeWrapper.CreateMiniVan();
try
{
Console.WriteLine(PInvokeWrapper.GetNumberOfSeats(miniVan));
}
finally
{
PInvokeWrapper.DeleteMiniVan(miniVan);
}
}
private static void CallbackSamples()
{
PInvokeWrapper.CallMeBackToSayHello(() => Console.WriteLine("\tHello from C#"));
PInvokeWrapper.ReportPythagorasBack(1, 2, t => Console.WriteLine(t.c));
}
