/// <summary>
/// Creates the font handle.
/// </summary>
private void CreateFont()
{
Debug.Assert(hFont == IntPtr.Zero, "hFont is not null, this will generate a handle leak.");
Debug.Assert(logFont != null, "WindowsFont.logFont not initialized.");
hFont = IntUnsafeNativeMethods.CreateFontIndirect(logFont);
#if TRACK_HFONT
Debug.WriteLine(DbgUtil.StackTraceToStr(String.Format("HFONT[0x{0:x8}] = CreateFontIndirect( LOGFONT={1} )", (int)this.hFont, this.logFont)));
#endif
if (hFont == IntPtr.Zero)
{
logFont.lfFaceName = defaultFaceName;
logFont.lfOutPrecision = IntNativeMethods.OUT_TT_ONLY_PRECIS; // True Type only.
hFont = IntUnsafeNativeMethods.CreateFontIndirect(logFont);
#if TRACK_HFONT
Debug.WriteLine(DbgUtil.StackTraceToStr(String.Format("HFONT[0x{0:x8}] = CreateFontIndirect( LOGFONT={1} )", (int)this.hFont, this.logFont)));
#endif
}
// Update logFont height and other adjusted parameters.
//
IntUnsafeNativeMethods.GetObject(new HandleRef(this, hFont), logFont);
// We created the hFont, we will delete it on dispose.
ownHandle = true;
}
/// <summary>
/// Returns a handle to this <see cref='Font'/>.
/// </summary>
public IntPtr ToHfont()
{
using (ScreenDC dc = ScreenDC.Create())
using (Graphics graphics = Graphics.FromHdcInternal(dc))
{
SafeNativeMethods.LOGFONT lf = ToLogFontInternal(graphics);
IntPtr handle = IntUnsafeNativeMethods.CreateFontIndirect(ref lf);
if (handle == IntPtr.Zero)
{
throw new Win32Exception();
}
return(handle);
}
}
