public static void DrawString(Control context, Font font, string text, Rectangle textBounds, bool useMnemonics, GdiTextDrawMode textMode)
{
IntPtr hdc = User32.GetDC(context.Handle);
try
{
Gdi32.SetBkColor(hdc, Gdi32.ToColorRef(context.BackColor));
Gdi32.SetTextColor(hdc, Gdi32.ToColorRef(context.ForeColor));
try
{
IntPtr hFont = font.ToHfont();
try
{
IntPtr hPrevFont = Gdi32.SelectObject(hdc, hFont);
try
{
StringBuilder sb = new StringBuilder(text);
RECT rect = textBounds;
User32.DRAWTEXTPARAMS dtparams = new User32.DRAWTEXTPARAMS();
dtparams.cbSize = (uint)Marshal.SizeOf(typeof(User32.DRAWTEXTPARAMS));
User32.DT flags =
textMode == GdiTextDrawMode.EndEllipsis ? User32.DT.END_ELLIPSIS
: textMode == GdiTextDrawMode.WordBreak ? User32.DT.WORDBREAK | User32.DT.END_ELLIPSIS
: User32.DT.WORDBREAK;
if (useMnemonics)
flags |= User32.DT.NOPREFIX;
if (0 == User32.DrawTextEx(hdc, sb, sb.Length, ref rect, flags, ref dtparams))
throw new Win32Exception(Marshal.GetLastWin32Error());
}
finally
{
Gdi32.SelectObject(hdc, hPrevFont);
}
}
finally
{
Gdi32.DeleteObject(hFont);
}
}
finally
{
}
}
finally
{
User32.ReleaseDC(context.Handle, hdc);
}
}
public static Rectangle MeasureString(Control context, Font font, string text, Rectangle textBounds)
{
IntPtr hdc = User32.GetDC(context.Handle);
try
{
IntPtr hFont = font.ToHfont();
try
{
IntPtr hPrevFont = Gdi32.SelectObject(hdc, hFont);
try
{
StringBuilder sb = new StringBuilder(text);
RECT rect = textBounds;
rect.bottom = rect.top; // set height to 0
User32.DRAWTEXTPARAMS dtparams = new User32.DRAWTEXTPARAMS();
dtparams.cbSize = (uint)Marshal.SizeOf(typeof(User32.DRAWTEXTPARAMS));
if (0 == User32.DrawTextEx(hdc, sb, sb.Length, ref rect, User32.DT.CALCRECT | User32.DT.WORDBREAK | User32.DT.END_ELLIPSIS, ref dtparams))
throw new Win32Exception(Marshal.GetLastWin32Error());
return rect;
}
finally
{
Gdi32.SelectObject(hdc, hPrevFont);
}
}
finally
{
Gdi32.DeleteObject(hFont);
}
}
finally
{
User32.ReleaseDC(context.Handle, hdc);
}
}
