我添加了一個重新實現ToolTip類和代碼來使用它的示例。
類:
class CustomToolTip : ToolTip
{
public CustomToolTip()
{
this.OwnerDraw = true;
this.Popup += new PopupEventHandler(this.OnPopup);
this.Draw += new DrawToolTipEventHandler(this.OnDraw);
}
string m_EndSpecialText;
Color m_EndSpecialTextColor =Color.Red;
public Color EndSpecialTextColor
{
get { return m_EndSpecialTextColor; }
set { m_EndSpecialTextColor = value; }
}
public string EndSpecialText
{
get { return m_EndSpecialText; }
set { m_EndSpecialText = value; }
}
private void OnPopup(object sender, PopupEventArgs e) // use this event to set the size of the tool tip
{
e.ToolTipSize = new Size(200, 100);
}
private void OnDraw(object sender, DrawToolTipEventArgs e) // use this event to customise the tool tip
{
Graphics g = e.Graphics;
LinearGradientBrush b = new LinearGradientBrush(e.Bounds,
Color.GreenYellow, Color.MintCream, 45f);
g.FillRectangle(b, e.Bounds);
g.DrawRectangle(new Pen(Brushes.Red, 1), new Rectangle(e.Bounds.X, e.Bounds.Y,
e.Bounds.Width - 1, e.Bounds.Height - 1));
//g.DrawString(e.ToolTipText, new Font(e.Font, FontStyle.Bold), Brushes.Silver,
// new PointF(e.Bounds.X + 6, e.Bounds.Y + 6)); // shadow layer
g.DrawString(e.ToolTipText, new Font(e.Font, FontStyle.Bold), Brushes.Black,
new PointF(e.Bounds.X + 5, e.Bounds.Y + 5)); // top layer
SolidBrush brush = new SolidBrush(EndSpecialTextColor);
g.DrawString(EndSpecialText, new Font(e.Font, FontStyle.Bold), brush,
new PointF(e.Bounds.X + 5, e.Bounds.Bottom - 15)); // top layer
brush.Dispose();
b.Dispose();
}
}
繼用上面的類
private void button1_Click(object sender, EventArgs e)
{
CustomToolTip toolTip1 = new CustomToolTip();
toolTip1.ShowAlways = true;
toolTip1.SetToolTip(button1, "Click me to execute.");
toolTip1.EndSpecialText = "Hello I am special";
}
這是更好地展示你做了什麼的。一些示例代碼... – saeed
@saeed我已經更新了我的問題。我需要相同的功能(如系統默認),但能夠隨心所欲地繪製文本。 –
什麼是ttSessionInfo的基類 – saeed