C#中设置多标签页面
C#中设置多标签页面
设置panel1,添加button2,button2按钮，接着设定panel2,添加tabControl1, 然后添加form2, form3, 以验证效果。
1、tabControl1的Anchor属性设置Top, Bottom, Left, Right(上下左右都点选)，Dock属性设置Fill
2、tabControl1的DrawMode属性设置OwnerDrawFixed (可以看到关闭的按钮)
3、tabControl1的SizeMode属性设置FillToRight (为标签页可以完整显示，如标签:TEST++++++)
4、tabControl1的TabPages属性根据需要添加或称除，可以全部删除
5、添加panel时，BorderStyle的属性设置Fixed3D
6、将Form2，Form3的BackColor的属性设置ActiveBorder，可以较为明显的看到窗口是否真的最大化，是否达到预期的效果，此处设置根据需要而定
private void button1_Click(object sender, EventArgs e)
{
//foreach是为了只打开一个窗口
foreach (TabPage tabpagesum in tabControl1.TabPages)
{
if (tabpagesum.Name == "Form2")
{
tabControl1.SelectTab("Form2");
return;
}
}
TabPage tab = new TabPage();
tab.Name = @"Form2";
tab.Text = @"ADD_Form2";
Form2 f2 = new Form2();
f2.TopLevel = false;
f2.FormBorderStyle = FormBorderStyle.None; //关闭掉最大化，最小化，关闭按钮
tab.Controls.Add(f2);
tabControl1.TabPages.Add(tab);
f2.Dock = DockStyle.Fill; //让整个tabcontrol控件填满窗体
f2.Show();
f2.WindowState = FormWindowState.Normal;
tab.ControlRemoved += new ControlEventHandler(tabpage_ControlRemoved);
}
private void tabpage_ControlRemoved(object sender, EventArgs e)
{
if (tabControl1.SelectedIndex >= 0)
{
tabControl1.TabPages.Remove(tabControl1.SelectedTab);
}
}
private void button2_Click(object sender, EventArgs e)
{
//foreach是为了只打开一个窗口
foreach (TabPage tabpagesum in tabControl1.TabPages)
{
if (tabpagesum.Name == "Form3")
{
tabControl1.SelectTab("Form3");
return;
}
}
TabPage tab = new TabPage();
tab.Name = @"Form3";
tab.Text = @"ADD_Form3++++++++++++++";//验证内容较多时，是否完全显示
Form3 f3 = new Form3();
f3.TopLevel = false;
f3.FormBorderStyle = FormBorderStyle.None; //关闭掉最大化，最小化，关闭按钮
tab.Controls.Add(f3);
tabControl1.TabPages.Add(tab);
f3.Dock = DockStyle.Fill;//让整个tabcontrol控件填满窗体
f3.Show();
tab.ControlRemoved += new ControlEventHandler(tabpage_ControlRemoved);
}
//鼠标点击关闭按扭
private void tabControl1_MouseDown(object sender, MouseEventArgs e)
{
if (e.Button == MouseButtons.Left)
{
int x = e.X;
int y = e.Y;
Rectangle tabRect = this.tabControl1.GetTabRect(this.tabControl1.SelectedIndex);
tabRect.Offset(tabRect.Width - 0x12, 2);
tabRect.Width = 15;
tabRect.Height = 15;
if ((((x > tabRect.X) && (x < tabRect.Right)) && (y > tabRect.Y)) && (y < tabRect.Bottom))
{
this.tabControl1.TabPages.Remove(this.tabControl1.SelectedTab);
}
}
}
//给TabControl的Page添加个关闭按钮
const int CloseSize = 12;
private void tabControl1_DrawItem(object sender, DrawItemEventArgs e)
{
Rectangle myTabRect = this.tabControl1.GetTabRect(e.Index);
e.Graphics.DrawString(this.tabControl1.TabPages[e.Index].Text, this.Font, SystemBrushes.ControlText, myTabRect.X + 2, myTabRect.Y + 2);
using (Pen p = new Pen(Color.Black))
{
myTabRect.Offset(myTabRect.Width - (CloseSize + 3), 2);
myTabRect.Width = CloseSize;
myTabRect.Height = CloseSize;
e.Graphics.DrawRectangle(p, myTabRect);
}
Color recColor = e.State == DrawItemState.Selected ? Color.DarkRed : Color.DarkGray;
using (Brush b = new SolidBrush(recColor))
{
e.Graphics.FillRectangle(b, myTabRect);
}
using (Pen p = new Pen(Color.White))
{
Point p1 = new Point(myTabRect.X + 3, myTabRect.Y + 3);
Point p2 = new Point(myTabRect.X + myTabRect.Width - 3, myTabRect.Y + myTabRect.Height - 3);
e.Graphics.DrawLine(p, p1, p2);
Point p3 = new Point(myTabRect.X + 3, myTabRect.Y + myTabRect.Height - 3);
Point p4 = new Point(myTabRect.X + myTabRect.Width - 3, myTabRect.Y + 3);
e.Graphics.DrawLine(p, p3, p4);
}
e.Graphics.Dispose();
}