public virtual void UpdateWindow(Nub nub, Bitmap buffer)
{
if (buffer == null || buffer.PixelFormat == 0) {
return;
}
IntPtr dcMemory = default(IntPtr);
dcMemory = CreateCompatibleDC(IntPtr.Zero);
// calculate the new window position/size based on the bitmap size
POINTAPI ptWindowScreenPosition = default(POINTAPI);
ptWindowScreenPosition.x = nub.Left;
ptWindowScreenPosition.y = nub.Top;
ST_SIZE szWindow = default(ST_SIZE);
szWindow.hSize = nub.Height;
szWindow.vSize = nub.Width;
// setup the blend function
BLENDFUNCTION blendPixelFunction = new BLENDFUNCTION() {
BlendOp = AC_SRC_OVER,
BlendFlags = 0,
SourceConstantAlpha = 255,
AlphaFormat = AC_SRC_ALPHA
};
POINTAPI ptSrc = default(POINTAPI);
// start point of the copy from dcMemory to dcScreen
ptSrc.x = 0;
ptSrc.y = 0;
//This is where anything needs to get drawn to be shown or updated on the window
using (Graphics g = Graphics.FromImage(buffer)) {
Draw(nub, g);
}
// perform the alpha blend
IntPtr useBmp = IntPtr.Zero;
useBmp = buffer.GetHbitmap(Color.FromArgb(0));
IntPtr bmpOld = IntPtr.Zero;
bmpOld = SelectObject(dcMemory, useBmp);
try {
UpdateLayeredWindow(
nub.Handle,
IntPtr.Zero,
ref ptWindowScreenPosition,
ref szWindow,
dcMemory,
ref ptSrc,
0,
ref blendPixelFunction,
ULW_ALPHA
);
}
catch (System.ObjectDisposedException) { }
catch (Exception) { }
SelectObject(dcMemory, bmpOld);
DeleteObject(useBmp);
DeleteObject(bmpOld);
ReleaseDC(IntPtr.Zero, dcMemory);
DeleteDC(dcMemory);
dcMemory = IntPtr.Zero;
bmpOld = IntPtr.Zero;
useBmp = IntPtr.Zero;
}
private void window_NeedsSumNubbin(object sender, WindowBoundsEventArgs e)
{
Nub nub = null;
Rectangle windowRect = e.Rect.ToRectangle();
if (_nubs.ContainsKey(e.Handle)) {
nub = _nubs[e.Handle];
nub.Renub(windowRect);
return;
}
nub = new Nub() {
WindowEdge = e.Edge,
WindowHandle = e.Handle,
WindowRect = windowRect,
LastWindowRect = e.LastRect.ToRectangle()
};
_nubs.Add(e.Handle, nub);
nub.FormClosing += nub_FormClosing;
nub.Show();
}
public static void Draw(Nub nub, Graphics g)
{
SizeF textSize = g.MeasureString(String.Concat(nub.WindowText, "W"), Theme.Current.Font);
}
