private void SetupWindow()
{
Debug.WriteLine(DateTime.Now + ": Setting up window.");
// get the windows graphics object
Graphics GFX = Graphics.FromHwnd(IntPtr.Zero);
SizeF TextRect;
// measure the size of the string based on the maximum width
TextRect = GFX.MeasureString(m_Text, m_Font, m_MaxWidth, StringFormat.GenericTypographic);
// create the new client rectangle based on the size of the text rectangle, then inflate it by the padding
m_ClientRectangle = new Rectangle(0, 0, (int)TextRect.Width + 1, (int)TextRect.Height + 1);
m_ClientRectangle.Inflate(PADDING, PADDING);
// if the window handle is not null
if (m_ToolTipWnd.Handle != IntPtr.Zero)
{
// if we are using uxthemes
if (m_Style == ToolStyle.UxTheme)
{
// grab the theme and graphics handle
IntPtr pTheme = GetToolTipTheme();
IntPtr hdc = GFX.GetHdc();
// if the pointer is not null
if (pTheme != IntPtr.Zero)
{
// create a RECT to pass to the theme routine and create a region pointer
RECT ClipRect = new RECT(0, 0, m_ClientRectangle.Width, m_ClientRectangle.Height);
IntPtr pRegion = IntPtr.Zero;
// attempt to get the region of the theme
if (ThemeRoutines.GetThemeBackgroundRegion(pTheme, hdc, (int)ToolTipPart.Standard,
(int)ToolTipStandardState.TTSS_NORMAL, ref ClipRect, out pRegion) == 0)
{
// if we were successful, go ahead and set the window region, this will give us rounded edges
Win32.SetWindowRgn(m_ToolTipWnd.Handle, pRegion, true);
// TODO: Determine if not releasing the region object pointed to will cause memory leaks (likely use deleteobject)
}
else
{
// otherwise, fall to the failsafe, assume the entire rectangle is visible, set that as the region
Win32.SetWindowRgn(m_ToolTipWnd.Handle, ref ClipRect, true);
}
}
// release the hdc
GFX.ReleaseHdc(hdc);
}
}
// dispose the graphics object
GFX.Dispose();
}
private void PaintToolTip(ref Message msg)
{
try
{
// get the open them and graphics object
Debug.WriteLine(DateTime.Now + ": Painting Tooltip.");
Graphics GFX = Graphics.FromHwnd(m_ToolTipWnd.Handle);
IntPtr pTheme = GetToolTipTheme();
// if we are using uxtheme and have an open theme available
if (m_Style == ToolStyle.UxTheme && pTheme != IntPtr.Zero)
{
// get the clip rectangle from the client rectangle
RECT ClipRect = new RECT(0, 0, m_ClientRectangle.Width, m_ClientRectangle.Height);
IntPtr hdc = GFX.GetHdc();
//DrawingUtils.GDI.GDI.SetBkMode(hdc, 1);
// draw the themed background using uxtheme
ThemeRoutines.DrawThemeBackground(pTheme, hdc, (int)ToolTipPart.Standard, (int)ToolTipStandardState.TTSS_NORMAL,
ref ClipRect, ref ClipRect);
// TODO: Draw the themed text as well
GFX.ReleaseHdc(hdc);
}
else
{
// otherwise, this is for flat style and fail safe
// get a pen with the border color and clear the background using the backcolor
Pen brderPen = new Pen(m_BorderColor, BORDERWIDTH);
GFX.Clear(m_BackColor);
// draw the border and dispose the pen
GFX.DrawRectangle(brderPen, 0, 0, m_ClientRectangle.Width - BORDERWIDTH, m_ClientRectangle.Height - BORDERWIDTH);
brderPen.Dispose();
}
// get the text bounds by using the client rectangle and deflating it by the padding width
Rectangle TxtBounds = new Rectangle(-1, -1, m_ClientRectangle.Width, m_ClientRectangle.Height);
TxtBounds.Inflate(-PADDING, -PADDING);
// get a new brush using the forecolor and draw the string
Brush bshFrgrnd = new SolidBrush(m_ForeColor);
GFX.DrawString(m_Text, m_Font, bshFrgrnd, TxtBounds);
// clean up what we used
bshFrgrnd.Dispose();
GFX.Dispose();
// return the hresult of zero and validate the entire rectangle
msg.Result = IntPtr.Zero;
Win32.ValidateRect(msg.HWnd, IntPtr.Zero);
}
catch (Exception ex)
{
Debug.WriteLine(ex.Message);
}
}