public void TestVariantToString()
{
VariantStruct variantStruct = default(VariantStruct);
variantStruct.vt = (short)VarEnum.VT_BSTR;
variantStruct.ptr = Marshal.StringToBSTR("test string");
IntPtr nativeVariant = Marshal.AllocCoTaskMem(Marshal.SizeOf(typeof(VariantStruct)));
Marshal.StructureToPtr(variantStruct, nativeVariant, false);
try {
Assert.AreEqual("test string", Marshal.GetObjectForNativeVariant(nativeVariant));
} catch (PlatformNotSupportedException e) { // FULLAOT
Marshal.FreeBSTR(variantStruct.ptr);
Marshal.FreeCoTaskMem(nativeVariant);
return;
}
Marshal.FreeBSTR(variantStruct.ptr);
variantStruct.ptr = IntPtr.Zero;
Marshal.StructureToPtr(variantStruct, nativeVariant, false);
Assert.IsNull(Marshal.GetObjectForNativeVariant(nativeVariant));
Marshal.FreeCoTaskMem(nativeVariant);
}
public void TestStringToVariant()
{
IntPtr nativeVariant = Marshal.AllocCoTaskMem(Marshal.SizeOf(typeof(VariantStruct)));
try {
Marshal.GetNativeVariantForObject("test string", nativeVariant);
} catch (PlatformNotSupportedException e) { // FULLAOT
Marshal.FreeCoTaskMem(nativeVariant);
return;
}
VariantStruct variantStruct = (VariantStruct)Marshal.PtrToStructure(nativeVariant, typeof(VariantStruct));
Marshal.FreeCoTaskMem(nativeVariant);
Assert.AreEqual((short)VarEnum.VT_BSTR, variantStruct.vt);
Assert.AreEqual("test string", Marshal.PtrToStringBSTR(variantStruct.ptr));
Marshal.FreeBSTR(variantStruct.ptr);
}
