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How do I change the shape of a checkbox?

Just a silly display question, but how do I edit the shape of my checkbox in WinForms?
To be specific, instead of the checkmark when I click on the 3 state checkbox, I would like a square. I saw this in a homework assignment and it's purely display, but I just can't find where to edit it.
I'm using Visual Studio C# for Windows Forms btw.
http://imgur.com/a/SkHW9
This is what the "Big" checkbox should look like

You can try this code:
private void checkBox1_Paint(object sender, PaintEventArgs e)
{
CheckState cs = checkBox1.CheckState;
if (cs == CheckState.Indeterminate)
{
using (SolidBrush brush = new SolidBrush(checkBox2.BackColor))
e.Graphics.FillRectangle(brush, 0, 1, 14, 14);
e.Graphics.FillRectangle(Brushes.Green, 3, 4, 8, 8);
e.Graphics.DrawRectangle(Pens.Black, 0, 1, 13, 13);
}
}
This should be easy to modify if you want something else..
Note that you may need to adapt it when changing fonts and surely will have to modify it when changing the alignments..! Also when changing DPI. Or themes. Or Windows versions. Or half a dozen other things. So this is more an example than a recommendation!
You may also read the interesting comments here.. and this example of more involved checkbox drawing..

In order to modify shape any control you need to use Paint event. For example if you add two radio buttons at form, and for each Paint event bind following code:
private void radioButton_Paint(object sender, PaintEventArgs e)
{
Graphics graphics = e.Graphics;
graphics.Clear(BackColor);
int offset = 2;
SizeF stringMeasure = graphics.MeasureString(radioButton1.Name, Font);
// calculate offsets
int leftOffset = offset + Padding.Left;
int topOffset = (int)(ClientRectangle.Height - stringMeasure.Height) / 2;
if (topOffset < 0)
{
topOffset = offset + Padding.Top;
}
else
{
topOffset += Padding.Top;
}
graphics.FillRectangle(new SolidBrush(Color.AliceBlue), 0, 0, leftOffset + 10, topOffset + 10);
graphics.DrawRectangle(new Pen(Color.Green), new Rectangle(0, 0, leftOffset + 10, leftOffset + 10));
graphics.DrawString(radioButton1.Text, (sender as RadioButton).Font, new SolidBrush(Color.IndianRed), 15, 0);
if( (sender as RadioButton).Checked)
{
graphics.FillRectangle(new SolidBrush(Color.Yellow), 1, 1, leftOffset + 8, 10);
}
}
you'll see following picture:

You have to play with the CheckState property of the checkbox
using the Checked, Unchecked or Indeterminate state
a pretty str.forw example:
private void AdjustMyCheckBoxProperties()
{
// Change the ThreeState and CheckAlign properties on every other click.
if (!checkBox1.ThreeState)
{
checkBox1.ThreeState = true;
checkBox1.CheckAlign = ContentAlignment.MiddleRight;
}
else
{
checkBox1.ThreeState = false;
checkBox1.CheckAlign = ContentAlignment.MiddleLeft;
}
// Concatenate the property values together on three lines.
label1.Text = "ThreeState: " + checkBox1.ThreeState.ToString() + "\n" +
"Checked: " + checkBox1.Checked.ToString() + "\n" +
"CheckState: " + checkBox1.CheckState.ToString();
}

How to change the tab close mark "X" color when mouse cursor touches on it?

I have one TabControl with multiple pages. Each page has a close mark "X" on tab. I want to the "X" color changed to white when mouse cursor touches (within an area) the "X", so that reminding us that cursor within that area. The codes are as following:
private void tabControl1_DrawItem(object sender, DrawItemEventArgs e)
{
//This code will render a "x" mark at the end of the Tab caption.
e.Graphics.DrawString("X", e.Font, Brushes.Red, e.Bounds.Right - 20, e.Bounds.Top + 4);
e.Graphics.DrawString(this.tabControl1.TabPages[e.Index].Text, e.Font, Brushes.Black, e.Bounds.Left + 24, e.Bounds.Top + 4);
e.Graphics.DrawImage(Properties.Resources.Div1, new Point(e.Bounds.Left, e.Bounds.Top + 2));
e.DrawFocusRectangle();
}
private void tabControl1_MouseMove(object sender, MouseEventArgs e)
{
Rectangle r = tabControl1.GetTabRect(tabControl1.SelectedIndex);
//Getting the position of the "x" mark.
Rectangle closeButton = new Rectangle(r.Right - 20, r.Top + 4, 20, 10);
if (closeButton.Contains(e.Location))
{
//how to write here to change tab caption color or close mark "X" color
}
}

Adding close button in tabpage tab caption in C# Windows Form

I am trying to add close button or 'X' on tabpage panel in tabcontrol and I have successfully done this by reading this stackoverflow question.
The problem is the tabbed page title and X sign is merged together. I discovered that the tabpage title panel is not resizing according to title text.
Here is the code:
//This code will render a "x" mark at the end of the Tab caption.
e.Graphics.DrawString("X", e.Font, Brushes.Black, e.Bounds.Right + 15, e.Bounds.Top + 4);
e.Graphics.DrawString(this.tabControl1.TabPages[e.Index].Text, e.Font, Brushes.Black, e.Bounds.Left+5, e.Bounds.Top + 4);
e.DrawFocusRectangle();
The result which comes is here I have changed e.bounds.right value but still it's not working.

To fix merged tabPage.Text with additionally drawed "X" just add:
tabControl.Padding = new System.Drawing.Point(21, 3);
It will add some extra space to the end of every tabPage

Make sure you set the DrawMode property of the Tab Control to OwnerDrawFixed. This property is decides whether system or developer painting the captions.
Here is code example that uses TabSizeMode = Fixed is setting the tab size:
public partial class Form1 : Form
{
const int LEADING_SPACE = 12;
const int CLOSE_SPACE = 15;
const int CLOSE_AREA = 15;
public Form1()
{
InitializeComponent();
}
private void tabControl1_DrawItem(object sender, DrawItemEventArgs e)
{
//This code will render a "x" mark at the end of the Tab caption.
e.Graphics.DrawString("x", e.Font, Brushes.Black, e.Bounds.Right - CLOSE_AREA, e.Bounds.Top + 4);
e.Graphics.DrawString(this.tabControl1.TabPages[e.Index].Text, e.Font, Brushes.Black, e.Bounds.Left + LEADING_SPACE, e.Bounds.Top + 4);
e.DrawFocusRectangle();
}
private void Form1_Load(object sender, EventArgs e)
{
// get the inital length
int tabLength = tabControl1.ItemSize.Width;
// measure the text in each tab and make adjustment to the size
for (int i = 0; i < this.tabControl1.TabPages.Count; i++)
{
TabPage currentPage = tabControl1.TabPages[i];
int currentTabLength = TextRenderer.MeasureText(currentPage.Text, tabControl1.Font).Width;
// adjust the length for what text is written
currentTabLength += LEADING_SPACE + CLOSE_SPACE + CLOSE_AREA;
if (currentTabLength > tabLength)
{
tabLength = currentTabLength;
}
}
// create the new size
Size newTabSize = new Size(tabLength, tabControl1.ItemSize.Height);
tabControl1.ItemSize = newTabSize;
}
}
Screen shot of sample code from above:

Using Graphics.DrawImage to create custom tabs in C#

I have a project in which you can add and remove tabs (like a web browser). So far I have this:
//Button to add a new tab page
private void cb_addPage_Click(object sender, EventArgs e)
{
string title = "TabPage " + (tabControl1.TabCount + 1).ToString() + " ";
TabPage myTabPage = new TabPage(title);
tabControl1.TabPages.Add(myTabPage);
tabControl1.SelectedTab = myTabPage;
}
//Form1_Load
private void Form1_Load(object sender, EventArgs e)
{
tabControl1.DrawMode = TabDrawMode.OwnerDrawFixed;
cb_addPage.Top = tabControl1.Top;
cb_addPage.Left = tabControl1.Right - cb_addPage.Width;
foreach (TabPage tp in tabControl1.TabPages) tp.Text += " ";
}
Rectangle closeX = Rectangle.Empty;
//Sets background and places the X button on each tab
private void tabControl1_DrawItem(object sender, DrawItemEventArgs e)
{
Size xSize = new Size(15, 15);
TabPage tp = tabControl1.TabPages[e.Index];
e.DrawBackground();
using (SolidBrush brush = new SolidBrush(e.ForeColor))
e.Graphics.DrawString(tp.Text + " ", e.Font, brush,
e.Bounds.X + 3, e.Bounds.Y + 4);
if (e.State == DrawItemState.Selected)
{
closeX = new Rectangle(e.Bounds.Right - xSize.Width - 3,
e.Bounds.Top + 5, xSize.Width, xSize.Height);
e.Graphics.DrawImage(imageList1.Images[0], closeX,
new Rectangle(0,0,16,16), GraphicsUnit.Pixel );
}
}
//Removes current tab (from X button)
private void tabControl1_MouseClick(object sender, MouseEventArgs e)
{
if (closeX.Contains(e.Location))
tabControl1.TabPages.Remove(tabControl1.SelectedTab);
}
So all this does is let you add tabs with a button and on each individual tab there is an X button to delete the tab.
I have used Graphics.DrawImage to display the custom X button (that are in an imageList). However how will I go about making custom tabs using Graphics.DrawImage.
To sum up I want tabs, but I want them to be custom images that I have made so it looks better. - Thanks

Your question is not very clear. Probably you want to display a different text on each tab. You can use the TextRenderer to do so:
const TextFormatFlags flags = TextFormatFlags.PreserveGraphicsClipping |
TextFormatFlags.VerticalCenter;
TextRenderer.DrawText(e.Graphics, tp.Text, tp.Font, e.Bounds, tp.ForeColor, flags);
Either prepend some spaces to the text in order to leave space for the X or define new coordiantes for the text
const int XCrossWidth = 20;
Rectangle textRect = new Rectangle(e.Bounds.Left + XCrossWidth, e.Bounds.Top,
e.Width - XCrossWidth, e.Height);
and substitue this for e.Bounds in TextRenderer.DrawText(...).
UPDATE
So you want to display custom images on your tabs. I assume that you have placed these images in the imageList1. How do you know which of them to display on which TabPage?
You could create your own tab page class and use this one instead of TabPage.
public TabPageEx : TabPage
{
public int ImageIndex { get; set }
}
Now set the property to the appropriate image index.
TabPageEx myTabPage = new TabPageEx(title);
myTabPage.ImageIndex = 3; // As an example.
tabControl1.TabPages.Add(myTabPage);
Then you can draw the image with
TabPageEx tp = (TabPageEx)tabControl1.TabPages[e.Index];
...
Rectangle imageRect = new Rectangle(e.Bounds.Left + 20, 0, 16, 16);
e.Graphics.DrawImage(imageList1.Images[tp.ImageIndex], imageRect);

If you want to display Images in addition to the text like a webbrowsers favicon you can use this modified code:
private void tabControl3_DrawItem(object sender, DrawItemEventArgs e)
{
Size xSize = new Size(16,16);
Point imgLoc = new Point(e.Bounds.X + 4, e.Bounds.Y + 4);
TabPage tp = tabControl3.TabPages[e.Index];
e.DrawBackground();
e.Graphics.DrawImage(imageList1.Images[tp.ImageIndex], new Rectangle(imgLoc, xSize),
new Rectangle(Point.Empty, xSize), GraphicsUnit.Pixel);
using (SolidBrush brush = new SolidBrush(e.ForeColor))
{
e.Graphics.DrawString(tp.Text + " ", e.Font, brush,
e.Bounds.X + 23, e.Bounds.Y + 4);
if (e.State == DrawItemState.Selected)
{
closeX = new Rectangle(e.Bounds.Right - xSize.Width - 3,
e.Bounds.Top + 5, xSize.Width, xSize.Height);
e.Graphics.DrawImage(imageList1.Images[0], closeX,
new Rectangle(Point.Empty, xSize), GraphicsUnit.Pixel);
}
}
}
You need to make sure that:
You have those images you want to show in each tab in your imagelist.
and you know the index of ech one.
Youi must set it when you create the page but you can always change it later.
It is a good idea to have a default icon at index 0 and to set the imageindex to 0 for those you don't know the right index.
Usually you would also have to make your Tab control point to the Imagelist. But since we are drawing it all by ourselves, this is not important.
You can use the more complex format of DrawString, that is used for drawing the close button. Here you don't just use a point to determine the location where to draw; instead this format uses two rectangles to determine the source and the target. This effectively leads to th option of scaling the image to a new size.
But you'll get the best quality if your Images have the right size to begin with. Please note that the text of each TabPage determines the width of the tab; to make it higher you need to chose a larger Fontsize.

tabcontrol OwnerDrawFixed right to left in c# [duplicate]

This question already has answers here:
Close button for TabPages of Right To Left TabControl c#
(2 answers)
Closed 6 years ago.
I wanted to add X button for each tab.
The drawMode is OwnerDrawFixed. it works fine if it left to right.
Once I allow RightToLeftLayout = true and RightToLeft = true, it does not look good because that he still adds the string from left to right, while that tab add from right to left.
How do I make it that string will also be right to left?
private void addCloseButton(object sender, DrawItemEventArgs e)
{
//This code will render a "x" mark at the end of the Tab caption.
e.Graphics.DrawString("x", e.Font, Brushes.Black, e.Bounds.Right - 15 , e.Bounds.Top +4 );
e.Graphics.DrawString(this.tabControl1.TabPages[e.Index].Text, e.Font, Brushes.Black, e.Bounds.Left+4, e.Bounds.Top+4);
e.DrawFocusRectangle();
}
private void actionClose(object sender, MouseEventArgs e)
{
//Looping through the controls.
for (int i = 0; i < this.tabControl1.TabPages.Count; i++)
{
Rectangle r = tabControl1.GetTabRect(i);
//Getting the position of the "x" mark.
Rectangle closeButton = new Rectangle(r.Right - 15, r.Top + 4, 12, 10);
if (closeButton.Contains(e.Location))
{
if (MessageBox.Show("?האם אתה רוצה לסגור טאב זה", "אישור", MessageBoxButtons.YesNo, MessageBoxIcon.Question) == DialogResult.Yes)
{
this.tabControl1.TabPages.RemoveAt(i);
break;
}
}
}
}

Pass StringFormat with FormatFlags flag set to StringFormatFlags.DirectionRightToLeft to the DrawString():
StringFormat drawFormat = new StringFormat(StringFormatFlags.DirectionRightToLeft);
var bounds = new RectangleF(.. set actual bound rectangle for text... )
e.Graphics.DrawString(this.tabControl1.TabPages[e.Index].Text, e.Font, Brushes.Black, bounds, drawFormat);

check here http://www.microsoft.com/middleeast/msdn/visualstudio2005.aspx you should use textrenderer instead of drawstring