C#

private void FillListBox()
{
    foreach (TreeNode rootNode in treeView.Nodes)
    {
        AddSubtree(rootNode, string.Empty);
    }
}
<p/>
private void AddSubtree(TreeNode node, string prefix)
{
    listBox.Items.Add(prefix + node.Text);
    prefix += '>';

    foreach (TreeNode childNode in node.Nodes)
    {
        AddSubtree(childNode, prefix);
    }
}

while (dbReader.Read())
{
    TreeNode newNode = new TreeNode((string)dbReader["Title"]);
    newNode.Tag = (string)dbReader["PARENT_CAT_ID"];
    newNode.Name = (string)dbReader["CAT_ID"];
    treeView.Nodes.Add(newNode);
}

for (int j = treeView.Nodes.Count - 1; j >= 0; j--)
{
    TreeNode node = treeView.Nodes[j];
    string parentId = (string)node.Tag;
    if (parentId != "0")
    {
        TreeNode[] parent = treeView1.Nodes.Find(parentId, true);
        if (parent.Length == 1)
        {
            treeView.Nodes.Remove(node);
            parent[0].Nodes.Add(node);
        }
    }
}

if(e.KeyCode == (Keys.A | Keys.Control))

Tech, life, family, faith: Give me a visit.
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The apostle Paul, modernly speaking: Epistles of Paul

Judah Himango

Tech, life, family, faith: Give me a visit.
I'm currently blogging about: Goof around music jam with my brothers (with video)
The apostle Paul, modernly speaking: Epistles of Paul

Judah Himango

picasso2 wrote:

When I run the application, one of the textBox has the focus.

picasso2 wrote:

do you have a sample code to override using ProcessCmdKey?

protected override bool ProcessCmdKey(ref Message msg, Keys keyData)
{
    if (keyData == (Keys.Control | Keys.A))
    {
       MessageBox.Show("You pressed CTRL+A!");
    }
    return base.ProcessCmdKey(ref msg, keyData);
}

Tech, life, family, faith: Give me a visit.
I'm currently blogging about: Goof around music jam with my brothers (with video)
The apostle Paul, modernly speaking: Epistles of Paul

Judah Himango

MyForm.KeyPreview = true;
MyForm.KeyDown += new KeyEventHandler(MyForm_KeyDown);
.
.
.
private void MyForm_KeyDown(object sender, KeyEventArgs e)
{
    if ((e.KeyCode == Keys.A) && e.Control && !e.Alt)
    {
        Debug.WriteLine("Ctrl + A");
    }
}

alexiev_nikolay wrote:

The image will be generated with code, so I can't make it directly semi transparent.

private unsafe void ApplyAlphaToImage(Bitmap image)
{
   if (image == null || _alpha == 255)
      return;

   int imageWidth = image.Width;
   int imageHeight = image.Height;

   BitmapData data = null;
   try 
   {
      data = image.LockBits(new Rectangle(0, 0, imageWidth, imageHeight), 
         ImageLockMode.ReadWrite, PixelFormat.Format32bppArgb);
      int scan0 = data.Scan0.ToInt32();
      int stride = data.Stride;

      byte * colPixel;

      byte invertedAlpha = (byte)(255 - _alpha);

      byte * rowPixel = (byte *)scan0;
      for (int y = 0; y < imageHeight; y++)
      {
         colPixel = rowPixel + 3;
         for (int x = 0; x < imageWidth; x++)
         {
            if (*(colPixel) < invertedAlpha)
               *(colPixel) = 0;
            else
               *(colPixel) = (byte)(*(colPixel) - invertedAlpha);
            colPixel += 4;
         }
         rowPixel += stride;
      }
   } 
   finally 
   {
      if (data != null)
         image.UnlockBits(data);
   }
}