由于内置的字体对话框在选择非True Type字体时会返回“Not a True Type Font”异常,因此我正在尝试使用字体系列创建自定义字体对话框,以过滤掉非True Type字体。
该控件运作正常,但我需要为该对话框添加大小和样式选择器。我正在发布当前代码。请帮助我添加大小和样式选择器,这也可能对您有所帮助。
public class FontListBox : ListBox
{
private List<Font> _fonts = new List<Font>();
private Brush _foreBrush;
public FontListBox()
{
DrawMode = DrawMode.OwnerDrawFixed;
ItemHeight = 20;
foreach (FontFamily ff in FontFamily.Families)
{
// determine the first available style, as all fonts don't support all styles
FontStyle? availableStyle = null;
foreach (FontStyle style in Enum.GetValues(typeof(FontStyle)))
{
if (ff.IsStyleAvailable(style))
{
availableStyle = style;
break;
}
}
if (availableStyle.HasValue)
{
Font font = null;
try
{
// do your own Font initialization here
// discard the one you don't like :-)
font = new Font(ff, 12, availableStyle.Value);
}
catch
{
}
if (font != null)
{
_fonts.Add(font);
Items.Add(font);
}
}
}
}
protected override void Dispose(bool disposing)
{
base.Dispose(disposing);
if (_fonts != null)
{
foreach (Font font in _fonts)
{
font.Dispose();
}
_fonts = null;
}
if (_foreBrush != null)
{
_foreBrush.Dispose();
_foreBrush = null;
}
}
public override Color ForeColor
{
get
{
return base.ForeColor;
}
set
{
base.ForeColor = value;
if (_foreBrush != null)
{
_foreBrush.Dispose();
}
_foreBrush = null;
}
}
private Brush ForeBrush
{
get
{
if (_foreBrush == null)
{
_foreBrush = new SolidBrush(ForeColor);
}
return _foreBrush;
}
}
protected override void OnDrawItem(DrawItemEventArgs e)
{
base.OnDrawItem(e);
if (e.Index < 0)
return;
e.DrawBackground();
e.DrawFocusRectangle();
Rectangle bounds = e.Bounds;
Font font = (Font)Items[e.Index];
e.Graphics.DrawString(font.Name, font, ForeBrush, bounds.Left, bounds.Top);
}
}
public partial class MyFontDialog : Form
{
private FontListBox _fontListBox;
public MyFontDialog()
{
InitializeComponent();
_fontListBox = new FontListBox();
_fontListBox.Dock = DockStyle.Fill;
Controls.Add(_fontListBox);
}
}
我已将该项目托管在sourceforge上https://sourceforge.net/p/newfontpicker/