private static void StructArgument()
{
Console.WriteLine("\r\n");
ManagedSimpleStruct simpleStruct = new ManagedSimpleStruct();
simpleStruct.intValue = 10;
simpleStruct.shortValue = 20;
simpleStruct.floatValue = 3.5f;
simpleStruct.doubleValue = 6.8f;
CPlusPlusLib.StructArgumentByVal(simpleStruct);
Console.WriteLine("\r\n");
ManagedSimpleStruct argStruct = new ManagedSimpleStruct();
argStruct.intValue = 1;
argStruct.shortValue = 2;
argStruct.floatValue = 3.0f;
argStruct.doubleValue = 4.5f;
CPlusPlusLib.StructArgumentByRef(ref argStruct);
Console.WriteLine("new struct value：int = {0}, short = {1}, float = {2:f6}, double = {3:f6}",
argStruct.intValue, argStruct.shortValue, argStruct.floatValue, argStruct.doubleValue);
}
private static void StructReturn()
{
IntPtr pStruct = CPlusPlusLib.ReturnStruct();
ManagedSimpleStruct retStruct = (ManagedSimpleStruct)Marshal.PtrToStructure(pStruct, typeof(ManagedSimpleStruct));
Marshal.FreeCoTaskMem(pStruct);
Console.WriteLine("\nreturn struct value：int = {0}, short = {1}, float = {2:f6}, double = {3:f6}",
retStruct.intValue, retStruct.shortValue, retStruct.floatValue, retStruct.doubleValue);
IntPtr ppStruct = IntPtr.Zero;
CPlusPlusLib.ReturnStructFromArg(ref ppStruct);
ManagedSimpleStruct retStructA = (ManagedSimpleStruct)Marshal.PtrToStructure(ppStruct, typeof(ManagedSimpleStruct));
Marshal.FreeCoTaskMem(ppStruct);
Console.WriteLine("return struct value：int = {0}, short = {1}, float = {2:f6}, double = {3:f6}",
retStruct.intValue, retStruct.shortValue, retStruct.floatValue, retStruct.doubleValue);
}
public static extern void StructArgumentByRef(ref ManagedSimpleStruct argStruct);
public static extern void StructArgumentByVal(ManagedSimpleStruct argStruct);