C#

Rajesh R Subramanian wrote:

and you can still capture it if you install a keyboard hook.

Henry Minute wrote:

My point was that Alt-Space is one of the less well known keyboard shortcuts but nonetheless some people do use it (me for instance) and because of that it might be worth the OP considering an alternative.

Henry Minute wrote:

As far as I am aware you can capture any key combo with a global hook

Rajesh R Subramanian wrote:

I'm sorry about your connection speed but I had a laugh

Rajesh R Subramanian wrote:

For instance, if your application does not have a system menu, and you want to emulate it yourself.

Rajesh R Subramanian wrote:

(OK, may be that can as well be trapped, but that will require ninja windows programming skills)

AndyASPVB wrote:

In my application, I need capture when a user presses the key combination "alt-space". Can someone show me how to do this, please?

IEnumerator<int[]> en = GetPermutations().GetEnumerator()
while (en.MoveNext())
{
  int[] permutation = en.Current;

  // Your code
}

public bool SkipPermutations(IEnumerator en, int count)
{
  for(;count > 0; count--)  // Note the initial semicolon - Don't need to initialize
    if (!en.MoveNext()) return false;

  return true;
}

if (!SkipPermutations(en, 4)) break;

I wrote:

Of course I will not be satisfied with a solution like running empty for loop to skip a number of permutations.

Ian Shlasko wrote:

a boolean fla

this.data[n - 1] = 1;  // right-most element is set to 1.

for (int i = n - 2; i >= 0; --i)
{
  this.data[i] = temp[i];
  for (int j = i + 1; j < n; ++j)
  {
    if (this.data[j] >= this.data[i])
      ++this.data[j];
  }
}

struct
{
  int ElementValue  // Actual value
  int SkipForward   // Number of blanks following this element
  int SkipBackwards // Number of blanks preceding this element
}

harold aptroot wrote:

edit: then you could skip x iterations by just adding x to the "permutation number"

// Gets the fist permutation of given order which starts with a given beginning.
public void First(int[] beginning, int order)
{
    var check = new bool[order];
    for (int i = 0; i < beginning.Length; i++)
    {
        check[beginning[i]] = true;
        data[i] = beginning[i];
    }
    int checkI = 0;
    for (int i = beginning.Length; i < order; i++)
    {
        while (check[checkI]) 
            checkI++;
        data[i] = checkI;
        checkI++;
    }
}

public static IEnumerable<Permutation> GetPermutations(int order)
{
    var permutation = new Permutation(order);
    while ((permutation = permutation.GetSuccessor()) != null)
        yield return permutation;
}

var perm = new Permutation(5);
var beginning = new[] { 1 };
foreach (Permutation permutation in Permutation.GetPermutations(5))
{
    if (permutation.StartsWith(beginning))
    {
        permutation.First(new [] { 2}, perm.Order);
    }
    Console.WriteLine("{0} {1} {2} {3} {4}", permutation[0], permutation[1], permutation[2], permutation[3], permutation[4]);
}