コード例 #1
0
        public void DrawText(string text, Point point, Font font, Color foreColor)
        {
            IntPtr fontHandle    = font.ToHfont();
            IntPtr oldFontHandle = NativeMethods.SelectObject(this.graphicsHandle, fontHandle);

            int oldBkMode    = NativeMethods.SetBkMode(this.graphicsHandle, NativeMethods.TRANSPARENT);
            int oldTextColor = NativeMethods.SetTextColor(this.graphicsHandle, Color.FromArgb(0, foreColor.R, foreColor.G, foreColor.B).ToArgb());

            Size size = this.MeassureTextInternal(text);

            NativeMethods.RECT clip = new NativeMethods.RECT();
            clip.left   = point.X;
            clip.top    = point.Y;
            clip.right  = clip.left + size.Width;
            clip.bottom = clip.top + size.Height;

            // ExtTextOut does not show Mnemonics highlighting.
            NativeMethods.DrawText(this.graphicsHandle, text, text.Length, ref clip, NativeMethods.DT_SINGLELINE | NativeMethods.DT_LEFT);

            NativeMethods.SetTextColor(this.graphicsHandle, oldTextColor);
            NativeMethods.SetBkMode(this.graphicsHandle, oldBkMode);

            NativeMethods.SelectObject(this.graphicsHandle, oldFontHandle);
            NativeMethods.DeleteObject(fontHandle);
        }