C# Signature:

[DllImport("user32.dll")]
static extern bool CreateCaret(IntPtr hWnd, IntPtr hBitmap, int nWidth,
   int nHeight);

VB.NET:

    <DllImport("user32.dll")> _
    Function CreateCaret(ByVal hWnd As IntPtr, _
            ByVal hBitmap As IntPtr, _
            ByVal nWidth As Integer, _
            ByVal nHeight As Integer) As Boolean
    End Function

User-Defined Types:

None.

Notes:

Windows allows only one caret per message queue. To add a caret to a control, handle the WM_SETFOCUS message, or the GotFocus event, or override OnGotFocus if you're writing a custom control, and call CreateCaret from the message or event handler. You should also handle WM_KILLFOCUS, LostFocus or OnLostFocus and call DestroyCaret. You will also need to call ShowCaret to make the caret visible, and SetCaretPos to set its position.

Tips & Tricks:

Please add some!

Sample Code:

//C# Example. This will create and show the caret in textBox1 when button1 is clicked.

private void button1_Click(object sender, System.EventArgs e) {

    CreateCaret(textBox1.Handle, IntPtr.Zero, 0, textBox1.Height);
    ShowCaret(textBox1.Handle);

}

Alternative Managed API:

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