停靠2个富文本框

Question

I am trying to make a text editor and I have 2 rich text boxes. I am uses the 1st rich text box as a number like and setting its Enabled property to false. Then the second text box is going next to it

I have currently set the dock of the first text box to left and the second one to fill. But the 2nd one keeps taking up the whole tabpage? And going slightly more left towards the number line and its hidden under there a little bit. Here is my create new document void I have... T2 is the number line and T is the default text box they will type into.

TabPage t = new TabPage("new " + getNumber());
tabControl1.TabPages.Add(t);
tabControl1.SelectedTab = t;
RichTextBox T2 = new RichTextBox();
t.Controls.Add(T2);
T2.Dock = DockStyle.Left;
T2.Enabled = false;

RichTextBox T = new RichTextBox();
t.Controls.Add(T);
T.Dock = DockStyle.Fill;
T.Font = new Font("Microsoft San Serif", 11);
Random R = new Random();
int RandomNumberHere = R.Next(1000, 100000);
T.Text = "Welcome, type your text...";
T.Select();

Answer 1

The problem is that you define your fill-docked text box at the end of the control list... winforms likes the fill-docked elements first in the list.

Easily solved:

RichTextBox T = new RichTextBox();
t.Controls.Add(T);
T.Dock = DockStyle.Fill;
T.Font = new Font("Microsoft San Serif", 11);
// Add this line
T.BringToFront();

Or you could also do T2.SendToBack(); after T is added to the controls collection.

Or you could simply create (and add to t.Controls ), the fill-docked textbox first, and the left-docked textbox second.

Either way works

By the way, try to name your variables correctly. t , T , T2 are just not good names

Answer 2

Here you go:

t.Controls.Add(T2);
t.Controls.Add(T);

t.Controls.SetChildIndex(T, 1);
t.Controls.SetChildIndex(T2, 0);

t.PerformLayout();  // needed after SetChildIndex!

T2.Dock = DockStyle.Left;    
T.Dock = DockStyle.Left;

If you want your boxes to grow with the TabPage here is one way to do it:

private void t_Resize(object sender, EventArgs e)
{
   // assuming you want the two RTBs to fill the TabPage
   // if you want something else, best add an anchored container panel
   // and use its resize event instead
   T2.Width = t.Width / 4;
   T.Width = t.Width / 4;
}

And yes, t, T and T2 are really bad names!

Answer 3

There's a few things going on:

Fill does just that; it Fills the entirety of the PARENT control. Whether anything else is there or not.

Your other text box will be hidden until it is set to Enabled.

What you Might? be looking for is a way to have the text box size itself based on the size of the tab page being created:

    {

        TabPage t = new TabPage("new " + 1);
        tabControl1.TabPages.Add(t);
        tabControl1.SelectedTab = t;
        RichTextBox T2 = new RichTextBox();
        t.Controls.Add(T2);
        T2.Dock = DockStyle.Left;
        T2.Enabled = true ;

        RichTextBox T = new RichTextBox();
        t.Controls.Add(T);
        T2.Dock = DockStyle.Right;
        var AdjustedSize = T2.Size;
        AdjustedSize.Width = t.Size.Width * 2 / 3;
        T2.Size = AdjustedSize;
        T.Font = new Font("Microsoft San Serif", 11);
        Random R = new Random();
        int RandomNumberHere = R.Next(1000, 100000);
        T.Text = "Welcome, type your text...";
        T.Select();

    }