public static extern IntPtr CreateDIBSection(IntPtr hdc, ref BITMAPINFO pbmi, uint iUsage, int ppvBits, IntPtr hSection, uint dwOffset);
// Draws theme text on glass.
public static void DrawTextOnGlass(Graphics graphics, String text, Font font, Rectangle bounds, int glowSize)
{
if (IsGlassEnabled)
{
IntPtr destdc = IntPtr.Zero;
try
{
destdc = graphics.GetHdc();
IntPtr Memdc = CreateCompatibleDC(destdc); // Set up a memory DC where we'll draw the text.
IntPtr bitmap;
IntPtr bitmapOld = IntPtr.Zero;
IntPtr logfnotOld;
//int uFormat = DT_SINGLELINE | DT_CENTER | DT_VCENTER | DT_NOPREFIX; //text format
BITMAPINFO dib = new BITMAPINFO();
dib.bmiHeader.biHeight = -bounds.Height; // negative because DrawThemeTextEx() uses a top-down DIB
dib.bmiHeader.biWidth = bounds.Width;
dib.bmiHeader.biPlanes = 1;
dib.bmiHeader.biSize = Marshal.SizeOf(typeof(BITMAPINFOHEADER));
dib.bmiHeader.biBitCount = 32;
dib.bmiHeader.biCompression = BI_RGB;
if (!(SaveDC(Memdc) == 0))
{
bitmap = CreateDIBSection(Memdc, ref dib, DIB_RGB_COLORS, 0, IntPtr.Zero, 0); // Create a 32-bit bmp for use in offscreen drawing when glass is on
if (!(bitmap == IntPtr.Zero))
{
bitmapOld = SelectObject(Memdc, bitmap);
IntPtr hFont = font.ToHfont();
logfnotOld = SelectObject(Memdc, hFont);
try
{
VisualStyleRenderer renderer = new VisualStyleRenderer(VisualStyleElement.Window.Caption.Active);
DTTOPTS dttOpts = new DTTOPTS();
dttOpts.dwSize = (uint)Marshal.SizeOf(typeof(DTTOPTS));
dttOpts.dwFlags = DTT_COMPOSITED | DTT_GLOWSIZE;
dttOpts.iGlowSize = glowSize;
RECT rc2 = new RECT(0, 0, bounds.Width, bounds.Height);
int dtter = DrawThemeTextEx(renderer.Handle, Memdc, 0, 0, text, -1, uFormat, ref rc2, ref dttOpts);
bool bbr = BitBlt(destdc, bounds.Left, bounds.Top, bounds.Width, bounds.Height, Memdc, 0, 0, SRCCOPY);
if (!bbr)
{
//throw new Exception("???");
}
}
catch (Exception)
{
//Log.Print(e.ToString());
//throw new Exception("???");
}
//Remember to clean up
SelectObject(Memdc, bitmapOld);
SelectObject(Memdc, logfnotOld);
DeleteObject(bitmap);
DeleteObject(hFont);
ReleaseDC(Memdc, -1);
DeleteDC(Memdc);
}
else
{
//throw new Exception("???");
}
}
else
{
//throw new Exception("???");
}
}
finally
{
if (destdc != IntPtr.Zero)
{
graphics.ReleaseHdc(destdc);
}
}
}
}
