public static Size GetTextSize(Graphics graphics, string text, Font font)
{
IntPtr hdc = IntPtr.Zero;
if (graphics != null)
{
// Get device context from the graphics passed in
hdc = graphics.GetHdc();
}
else
{
// Get screen device context
hdc = APIsGdi.GetDC(IntPtr.Zero);
}
IntPtr fontHandle = font.ToHfont();
IntPtr currentFontHandle = APIsGdi.SelectObject(hdc, fontHandle);
APIsStructs.RECT rect = new APIsStructs.RECT();
rect.left = 0;
rect.right = 0;
rect.top = 0;
rect.bottom = 0;
APIsUser32.DrawText(hdc, text, text.Length, ref rect,
APIsEnums.DrawTextFormatFlags.SINGLELINE | APIsEnums.DrawTextFormatFlags.LEFT | APIsEnums.DrawTextFormatFlags.CALCRECT);
APIsGdi.SelectObject(hdc, currentFontHandle);
APIsGdi.DeleteObject(fontHandle);
if (graphics != null)
{
graphics.ReleaseHdc(hdc);
}
else
{
APIsUser32.ReleaseDC(IntPtr.Zero, hdc);
}
return(new Size(rect.right - rect.left, rect.bottom - rect.top));
}
