/// <summary>
/// Initializes a new instance of the <see cref="StyledToolTip"/> class.
/// </summary>
public StyledToolTip()
: base()
{
//Default settings
this.ShowAlways = true;
this.OwnerDraw = true;
this.DisplayShadow = false;
this.Popup += (s, e) =>
{
//Set the tooltip to a nice size like in VS.
e.ToolTipSize = new Size(e.ToolTipSize.Width + 15, e.ToolTipSize.Height + 10);
//Remove the shadow via Win32 interop (I'm disabling the DROPSHADOW-Classstyle)
try
{
if (!this.DisplayShadow && this.Handle != IntPtr.Zero)
{
HandleRef hRef = new HandleRef(this, this.Handle);
IntPtr exStyle = NativeWrappers.GetClassLongPtr(hRef, NativeConstants.GCL_STYLE);
if (((int)exStyle & NativeConstants.CS_DROPSHADOW) == NativeConstants.CS_DROPSHADOW)
{
exStyle = new IntPtr((int)exStyle & ~NativeConstants.CS_DROPSHADOW);
NativeWrappers.SetClassLongPtr(hRef, NativeConstants.GCL_STYLE, exStyle);
}
}
}
catch
{
//If anything goes wrong here, for example because we're using this tooltip on an unsupported platform, we don't want the application to crash but just to suppress the exception.
}
};
//Render the tooltip
this.Draw += (s, e) =>
{
e.Graphics.TextRenderingHint = TextRenderingHint.ClearTypeGridFit; //Make the text look nice
e.Graphics.FillRectangle(new SolidBrush(StyleProvider.ActiveStyle.BackColor), e.Bounds); //Draw the background
e.Graphics.DrawRectangle(new Pen(StyleProvider.ActiveStyle.BorderColor), new Rectangle(e.Bounds.Location, new Size(e.Bounds.Width - 1, e.Bounds.Height - 1))); //Draw the border
e.Graphics.DrawString(e.ToolTipText, e.Font, new SolidBrush(StyleProvider.ActiveStyle.ForegroundColor), e.Bounds, new StringFormat()
{
Alignment = StringAlignment.Center, LineAlignment = StringAlignment.Center, Trimming = StringTrimming.EllipsisWord
}); //Draw the text
};
}