private static string GetCommandString(Shell32.IContextMenu cMenu, uint offset, Shell32.GCS flags = Shell32.GCS.GCS_VERBW)
{
if (offset > 5000)
{
// Hackish workaround to avoid an AccessViolationException on some items,
// notably the "Run with graphic processor" menu item of NVidia cards
return(null);
}
SafeCoTaskMemString commandString = null;
try
{
commandString = new SafeCoTaskMemString(512);
cMenu.GetCommandString(new IntPtr(offset), flags, IntPtr.Zero, commandString, (uint)commandString.Capacity - 1);
Debug.WriteLine("Verb {0}: {1}", offset, commandString);
return(commandString.ToString());
}
catch (Exception ex) when(ex is InvalidCastException || ex is ArgumentException)
{
// TODO: investigate this..
Debug.WriteLine(ex);
return(null);
}
catch (Exception ex) when(ex is COMException || ex is NotImplementedException)
{
// Not every item has an associated verb
return(null);
}
finally
{
commandString?.Dispose();
}
}
public void ToStringTest()
{
const int sz = 100;
var s = new SafeCoTaskMemString(new string('x', sz));
Assert.That(s.ToString(), Is.EqualTo(new string('x', sz)));
}
private static string GetCommandString(Shell32.IContextMenu cMenu, uint offset, Shell32.GCS flags = Shell32.GCS.GCS_VERBW)
{
SafeCoTaskMemString commandString = null;
try
{
commandString = new SafeCoTaskMemString(512);
cMenu.GetCommandString(new IntPtr(offset), flags, IntPtr.Zero, commandString, (uint)commandString.Capacity - 1);
Debug.WriteLine("Verb {0}: {1}", offset, commandString);
return(commandString.ToString());
}
catch (Exception ex) when(ex is InvalidCastException || ex is ArgumentException)
{
// TODO: investigate this..
Debug.WriteLine(ex);
return(null);
}
catch (Exception ex) when(ex is COMException || ex is NotImplementedException)
{
// Not every item has an associated verb
return(null);
}
finally
{
commandString?.Dispose();
}
}
public void PathCchAddBackslashExTest2()
{
var sb = new SafeCoTaskMemString(TestCaseSources.TempDirWhack, 64);
Assert.That(PathCchAddBackslashEx((IntPtr)sb, sb.Capacity, out var end, out var rem), Is.EqualTo((HRESULT)HRESULT.S_FALSE));
Assert.That(sb.ToString(), Is.EqualTo(TestCaseSources.TempDirWhack));
Assert.That(end, Is.EqualTo(sb.DangerousGetHandle().Offset(sb.Length * 2)));
sb = new SafeCoTaskMemString(TestCaseSources.TempDir, 64);
Assert.That(PathCchAddBackslashEx((IntPtr)sb, sb.Size, out end, out rem), Is.EqualTo((HRESULT)0));
Assert.That(sb.ToString(), Is.EqualTo(TestCaseSources.TempDirWhack));
Assert.That(end, Is.EqualTo(sb.DangerousGetHandle().Offset(sb.Length * 2)));
}
public void PathCchRemoveBackslashExTest()
{
var sb = new SafeCoTaskMemString(@"C:\Temp\", 64);
Assert.That(PathCchRemoveBackslashEx((IntPtr)sb, sb.Capacity, out var end, out var rem), Is.EqualTo((HRESULT)0));
Assert.That(sb.ToString(), Is.EqualTo(@"C:\Temp"));
Assert.That(end, Is.EqualTo(sb.DangerousGetHandle().Offset(14)));
sb = new SafeCoTaskMemString(@"C:\Temp", 64);
Assert.That(PathCchRemoveBackslashEx((IntPtr)sb, sb.Capacity, out end, out rem), Is.EqualTo((HRESULT)HRESULT.S_FALSE));
Assert.That(sb.ToString(), Is.EqualTo(@"C:\Temp"));
Assert.That(end, Is.EqualTo(sb.DangerousGetHandle().Offset(14)));
}
