public void UpdateCursorData()
{
CursorInfo cursorInfo = new CursorInfo();
cursorInfo.cbSize = Marshal.SizeOf(cursorInfo);
if (NativeMethods.GetCursorInfo(out cursorInfo))
{
IsVisible = cursorInfo.flags == NativeMethods.CURSOR_SHOWING;
if (IsVisible)
{
IconHandle = NativeMethods.CopyIcon(cursorInfo.hCursor);
IconInfo iconInfo;
if (NativeMethods.GetIconInfo(IconHandle, out iconInfo))
{
Point cursorPosition = CaptureHelpers.GetZeroBasedMousePosition();
Position = new Point(cursorPosition.X - iconInfo.xHotspot, cursorPosition.Y - iconInfo.yHotspot);
if (iconInfo.hbmMask != IntPtr.Zero)
{
NativeMethods.DeleteObject(iconInfo.hbmMask);
}
if (iconInfo.hbmColor != IntPtr.Zero)
{
NativeMethods.DeleteObject(iconInfo.hbmColor);
}
}
}
}
}
public static extern bool GetCursorInfo(out CursorInfo pci);
public static extern bool GetCursorInfo(out CursorInfo pci);
public static MyCursor CaptureCursor()
{
CursorInfo cursorInfo = new CursorInfo();
cursorInfo.cbSize = Marshal.SizeOf(cursorInfo);
if (GetCursorInfo(out cursorInfo) && cursorInfo.flags == CURSOR_SHOWING)
{
cursorInfo.ptScreenPos = CaptureHelpers.GetZeroBasedMousePosition();
IntPtr hicon = CopyIcon(cursorInfo.hCursor);
if (hicon != IntPtr.Zero)
{
IconInfo iconInfo;
if (GetIconInfo(hicon, out iconInfo))
{
Point position = new Point(cursorInfo.ptScreenPos.X - iconInfo.xHotspot, cursorInfo.ptScreenPos.Y - iconInfo.yHotspot);
using (Bitmap maskBitmap = Bitmap.FromHbitmap(iconInfo.hbmMask))
{
Bitmap resultBitmap = null;
if (IsCursorMonochrome(maskBitmap))
{
resultBitmap = new Bitmap(maskBitmap.Width, maskBitmap.Width);
Graphics desktopGraphics = Graphics.FromHwnd(GetDesktopWindow());
IntPtr desktopHdc = desktopGraphics.GetHdc();
IntPtr maskHdc = NativeMethods.CreateCompatibleDC(desktopHdc);
IntPtr oldPtr = NativeMethods.SelectObject(maskHdc, maskBitmap.GetHbitmap());
using (Graphics resultGraphics = Graphics.FromImage(resultBitmap))
{
IntPtr resultHdc = resultGraphics.GetHdc();
// These two operation will result in a black cursor over a white background.
// Later in the code, a call to MakeTransparent() will get rid of the white background.
NativeMethods.BitBlt(resultHdc, 0, 0, 32, 32, maskHdc, 0, 32, CopyPixelOperation.SourceCopy);
NativeMethods.BitBlt(resultHdc, 0, 0, 32, 32, maskHdc, 0, 0, CopyPixelOperation.SourceInvert);
resultGraphics.ReleaseHdc(resultHdc);
}
IntPtr newPtr = NativeMethods.SelectObject(maskHdc, oldPtr);
NativeMethods.DeleteDC(newPtr);
NativeMethods.DeleteDC(maskHdc);
desktopGraphics.ReleaseHdc(desktopHdc);
// Remove the white background from the BitBlt calls,
// resulting in a black cursor over a transparent background.
resultBitmap.MakeTransparent(Color.White);
}
else
{
resultBitmap = Icon.FromHandle(hicon).ToBitmap();
}
return new MyCursor(new Cursor(cursorInfo.hCursor), position, resultBitmap);
}
}
}
}
return new MyCursor();
}
