Adding a close button on a tabbed tab in C # Windows Form
I'm trying to add a close button or "X" on a tab bar to a tabcontrol, and I've successfully done so by reading this question about stack_surface .
The problem is the title of the tabbed page and the X is concatenated. I found that the tab title bar does not resize to fit the 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 that appears here, I changed the value e.bounds.right
, but still it doesn't work.
+3
source to share
2 answers
Make sure the DrawMode property of the tab control is OwnerDrawFixed . This property decides whether the system or the developer will draw the decals.
Here is some sample code that uses TabSizeMode = Fixed to set the size of a bookmark:
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;
}
}
Screenshot of the example code above:
+5
source to share