How to get the location of cursor in Richtext

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Dear Everyone,
I am beginner in programming.
When i learned how to programming C# with VS.net, i saw that a mini menu( don't know exactly it's name)appears at the text cursor in richtext when i press Atl+Spacebar.
And if i move the cusrsor to another line and press that combined buttons(Atl+Spacebar)again,it'll appear at the text cursor. I tried to do that. But hopeless.Maybe i am too bad.Have anyone have a good idea???
I will grateful for showing me how to make it.
I just want to know how to make it run like that.
So that i can use it in my program.
Sr for my bad English.
Thx for reading.
Your sincerely.

Posted 10-May-11 17:08pm

Tokisan

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Sergey Alexandrovich Kryukov 11-May-11 0:32am

Alt-Spacebar should remain the window's icon menu (system menu), nothing else.
--SA

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CS2011 · Answer 1 · 2011-05-10T18:49:00

First of all the menu is called context menu. Second ALT+SPACE is handled by OS i would suggest to use some other key combination however if you still want to do the same easy way is to set control box property of the form to False.

C#

public partial class Form1 : Form
   {
       [DllImport("user32.dll")]
       [return: MarshalAs(UnmanagedType.Bool)]
       static extern bool GetCaretPos(out Point lpPoint);

       public Form1()
       {
           InitializeComponent();
       }
       private void richTextBox1_KeyPress(object sender, KeyPressEventArgs e)
       {
           //if ((rtb1.Mo & Keys.Shift) == Keys.Shift)
           //{
           //}
       }
       private void rtb1_KeyDown(object sender, KeyEventArgs e)
       {
           Point p= new Point();
           //This will display the context menu when you press ctrl+Shift key
           if (e.Shift && e.Control)
            // you can use following condition if you have set the control box property to false
            //if (e.Alt && e.KeyCode == Keys.Space)
           {
               //MessageBox.Show("Control+shift");
               GetCaretPos(out p);
               cmenu.Show(rtb1, p);
           }
       }

Sergey Alexandrovich Kryukov · Answer 2 · 2011-05-10T18:43:00

If you're using System.Windows.Forms.RichTextBox, this is how to find the coordinates:

System.Drawing.Point whereIsTheCursor =
   myRichTextBox.GetPositionFromCharIndex(
      myRichTextBox.SelectionStart);

Please remember that Alt+spacebar should popup the window's system menu (at the window's icon); so you don't want to disrupt this important key combination.

—SA

How to get the location of cursor in Richtext

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